Release 0.2.1

Fixes i2cp bug while connecting to remote router

README.md

@@ -1,14 +1,14 @@
 # MuWire - Easy Anonymous File-Sharing
 
-MuWire is an easy to use file-sharing program which offers anonymity using [I2P technology](http://geti2p.net).
+MuWire is an easy to use file-sharing program which offers anonymity using [I2P technology](http://geti2p.net).  It works on any platform Java works on, including Windows,MacOS,Linux.
 
 It is inspired by the LimeWire Gnutella client and developped by a former LimeWire developer.
 
-The project is in development.  You can find technical documentation in the "doc" folder.
+The current stable release - 0.1.5 is avaiable for download at http://muwire.com.  You can find technical documentation in the "doc" folder.
 
 ### Building
 
-You need JDK 8 or newer.  After installing that and setting up the appropriate paths, just type
+You need JRE 8 or newer.  After installing that and setting up the appropriate paths, just type
 
 ```
 ./gradlew assemble 
@@ -23,17 +23,11 @@ Some of the UI tests will fail because they haven't been written yet :-/
 
 ### Running
 
-You need to have an I2P router up and running on the same machine.  After you build the application, look inside "gui/build/distributions".  Untar/unzip one of the "shadow" files and then run the jar contained inside.  
+You need to have an I2P router up and running on the same machine.  After you build the application, look inside "gui/build/distributions".  Untar/unzip one of the "shadow" files and then run the jar contained inside by typing "java -jar MuWire-x.y.z.jar" in a terminal or command prompt.  If you use a custom I2CP host and port, create a file $HOME/.MuWire/i2p.properties and put "i2cp.tcp.host=<host>" and "i2cp.tcp.post=<port>" in there.
 
-The first time you run MuWire it will ask you to select a nickname.  This nickname will be displayed with search results, so that others can verify the file was shared by you.
-
-At the moment there are very few nodes on the network, so you will see very few connections and search results.  It is best to leave MuWire running all the time, just like I2P.
+The first time you run MuWire it will ask you to select a nickname.  This nickname will be displayed with search results, so that others can verify the file was shared by you.  It is best to leave MuWire running all the time, just like I2P.
 
 
 ### Known bugs and limitations
 
-* Any shared files get re-hashed on startup
-* Sometimes the list of shared files gets lost 
 * Many UI features you would expect are not there yet
-
-

TODO.md

@@ -0,0 +1,42 @@
+# TODO List
+
+Not in any particular order yet
+
+### Big Items
+
+##### Alternate Locations
+
+This helps peers discover new sources for a file while the download is in progress.  Also makes sharing of partial files possible.
+
+##### Bloom Filters
+
+This reduces query traffic by not sending last hop queries to peers that definitely do not have the file
+
+##### Two-tier Topology
+
+This helps with scalability
+
+##### Trust List Sharing
+
+For helping users make better decisions whom to trust
+
+##### Content Control Panel
+
+To allow every user to not route queries for content they do not like.  This is mostly GUI work, the backend part is simple
+
+##### Packaging With JRE, Embedded Router
+
+For ease of deployment for new users, and so that users do not need to run a separate I2P router
+
+##### Web UI, REST Interface, etc.
+
+Basically any non-gui non-cli user interface
+
+### Small Items
+
+* Detect if router is dead and show warning or exit
+* Wrapper of some kind for in-place upgrades
+* Download file sequentially
+* Unsharing of files
+* Multiple-selection download, Ctrl-A
+* Automatic sharing of new files in shared directories (more like medium item)

cli/build.gradle

@@ -0,0 +1,22 @@
+buildscript {
+
+    repositories {
+        jcenter()
+        mavenLocal()
+    }
+
+    dependencies {
+        classpath 'com.github.jengelman.gradle.plugins:shadow:2.0.4'
+    }
+}
+
+apply plugin : 'application'
+mainClassName = 'com.muwire.cli.Cli'
+apply plugin : 'com.github.johnrengelman.shadow'
+
+applicationDefaultJvmArgs = ['-Djava.util.logging.config.file=logging.properties']
+
+dependencies {
+    compile project(":core")
+}
+

cli/src/main/groovy/com/muwire/cli/Cli.groovy

@@ -0,0 +1,142 @@
+package com.muwire.cli
+
+import java.util.concurrent.CountDownLatch
+
+import com.muwire.core.Core
+import com.muwire.core.MuWireSettings
+import com.muwire.core.connection.ConnectionAttemptStatus
+import com.muwire.core.connection.ConnectionEvent
+import com.muwire.core.connection.DisconnectionEvent
+import com.muwire.core.files.AllFilesLoadedEvent
+import com.muwire.core.files.FileHashedEvent
+import com.muwire.core.files.FileLoadedEvent
+import com.muwire.core.files.FileSharedEvent
+import com.muwire.core.upload.UploadEvent
+import com.muwire.core.upload.UploadFinishedEvent
+
+class Cli {
+    
+    public static void main(String[] args) {
+        def home = System.getProperty("user.home") + File.separator + ".MuWire"
+        home = new File(home)
+        if (!home.exists())
+            home.mkdirs()
+        
+        def propsFile = new File(home,"MuWire.properties")
+        if (!propsFile.exists()) {
+            println "create props file ${propsFile.getAbsoluteFile()} before launching MuWire"
+            System.exit(1)
+        }
+        
+        def props = new Properties()
+        propsFile.withInputStream { props.load(it) }
+        props = new MuWireSettings(props)
+        
+        Core core 
+        try {
+            core = new Core(props, home, "0.2.1")
+        } catch (Exception bad) {
+            bad.printStackTrace(System.out)
+            println "Failed to initialize core, exiting"
+            System.exit(1)
+        }
+
+                
+        
+        
+        def filesList
+        if (args.length == 0) {
+            println "Enter a file containing list of files to share"
+            def reader = new BufferedReader(new InputStreamReader(System.in))
+            filesList = reader.readLine()
+        } else 
+            filesList = args[0]
+        
+        Thread.sleep(1000)
+        println "loading shared files from $filesList"
+        
+        // listener for shared files
+        def sharedListener = new SharedListener()
+        core.eventBus.register(FileHashedEvent.class, sharedListener)
+        core.eventBus.register(FileLoadedEvent.class, sharedListener)
+        
+        // for connections
+        def connectionsListener = new ConnectionListener()
+        core.eventBus.register(ConnectionEvent.class, connectionsListener)
+        core.eventBus.register(DisconnectionEvent.class, connectionsListener)
+        
+        // for uploads
+        def uploadsListener = new UploadsListener()
+        core.eventBus.register(UploadEvent.class, uploadsListener)
+        core.eventBus.register(UploadFinishedEvent.class, uploadsListener)
+        
+        Timer timer = new Timer("status-printer", true)
+        timer.schedule({
+            println "Connections $connectionsListener.connections Uploads $uploadsListener.uploads Shared $sharedListener.shared"
+        } as TimerTask, 60000, 60000)
+        
+        def latch = new CountDownLatch(1)
+        def fileLoader = new Object() {
+            public void onAllFilesLoadedEvent(AllFilesLoadedEvent e) {
+                latch.countDown()
+            }
+        }
+        core.eventBus.register(AllFilesLoadedEvent.class, fileLoader)
+        core.startServices()
+        
+        println "waiting for files to load"
+        latch.await()
+        // now we begin
+        println "MuWire is ready"
+        
+        filesList = new File(filesList)
+        filesList.withReader { 
+            def toShare = it.readLine()
+            core.eventBus.publish(new FileSharedEvent(file : new File(toShare)))
+        }
+        Runtime.getRuntime().addShutdownHook({
+            println "shutting down.."
+            core.shutdown()
+            println "shutdown."
+        })
+        Thread.sleep(Integer.MAX_VALUE)
+    }
+    
+    static class ConnectionListener {
+        volatile int connections
+        public void onConnectionEvent(ConnectionEvent e) {
+            if (e.status == ConnectionAttemptStatus.SUCCESSFUL)
+                connections++
+        }
+        public void onDisconnectionEvent(DisconnectionEvent e) {
+            connections--
+        }
+    }
+    
+    static class UploadsListener {
+        volatile int uploads
+        public void onUploadEvent(UploadEvent e) {
+            uploads++
+            println "Starting upload of ${e.uploader.file.getName()} to ${e.uploader.request.downloader.getHumanReadableName()}"
+        }
+        public void onUploadFinishedEvent(UploadFinishedEvent e) {
+            uploads--
+            println "Finished upload of ${e.uploader.file.getName()} to ${e.uploader.request.downloader.getHumanReadableName()}"
+        }
+    }
+    
+    static class SharedListener {
+        volatile int shared
+        void onFileHashedEvent(FileHashedEvent e) {
+            if (e.error != null)
+                println "ERROR $e.error"
+            else {
+                println "Shared file : $e.sharedFile.file"
+                shared++
+            }
+        }
+        void onFileLoadedEvent(FileLoadedEvent e) {
+            shared++
+        }
+    }
+}

cli/src/main/groovy/com/muwire/cli/CliDownloader.groovy

@@ -0,0 +1,166 @@
+package com.muwire.cli
+
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.CountDownLatch
+
+import com.muwire.core.Core
+import com.muwire.core.MuWireSettings
+import com.muwire.core.connection.ConnectionAttemptStatus
+import com.muwire.core.connection.ConnectionEvent
+import com.muwire.core.download.DownloadStartedEvent
+import com.muwire.core.download.Downloader
+import com.muwire.core.download.UIDownloadEvent
+import com.muwire.core.search.QueryEvent
+import com.muwire.core.search.SearchEvent
+import com.muwire.core.search.UIResultEvent
+
+import net.i2p.data.Base64
+
+class CliDownloader {
+    
+    private static final List<Downloader> downloaders = Collections.synchronizedList(new ArrayList<>())
+    private static final Map<UUID,ResultsHolder> resultsListeners = new ConcurrentHashMap<>()
+    
+    public static void main(String []args) {
+        def home = System.getProperty("user.home") + File.separator + ".MuWire"
+        home = new File(home)
+        if (!home.exists())
+            home.mkdirs()
+        
+        def propsFile = new File(home,"MuWire.properties")
+        if (!propsFile.exists()) {
+            println "create props file ${propsFile.getAbsoluteFile()} before launching MuWire"
+            System.exit(1)
+        }
+        
+        def props = new Properties()
+        propsFile.withInputStream { props.load(it) }
+        props = new MuWireSettings(props)
+        
+        def filesList
+        int connections
+        int resultWait
+        if (args.length != 3) {
+            println "Enter a file containing list of hashes of files to download, " + 
+                "how many connections you want before searching" +
+                "and how long to wait for results to arrive"
+                System.exit(1)
+        } else {
+            filesList = args[0]
+            connections = Integer.parseInt(args[1])
+            resultWait = Integer.parseInt(args[2])
+        }
+
+        Core core
+        try {
+            core = new Core(props, home, "0.2.1")
+        } catch (Exception bad) {
+            bad.printStackTrace(System.out)
+            println "Failed to initialize core, exiting"
+            System.exit(1)
+        }
+        
+        
+        def latch = new CountDownLatch(connections)
+        def connectionListener = new ConnectionWaiter(latch : latch)
+        core.eventBus.register(ConnectionEvent.class, connectionListener)
+        
+        core.startServices()
+        println "starting to wait until there are $connections connections"
+        latch.await()
+        
+        println "connected, searching for files"
+        
+        def file = new File(filesList)
+        file.eachLine {
+            String[] split = it.split(",")
+            UUID uuid = UUID.randomUUID()
+            core.eventBus.register(UIResultEvent.class, new ResultsListener(fileName : split[1]))
+            def hash = Base64.decode(split[0])
+            def searchEvent = new SearchEvent(searchHash : hash, uuid : uuid)
+            core.eventBus.publish(new QueryEvent(searchEvent : searchEvent, firstHop:true,
+                replyTo: core.me.destination, receivedOn : core.me.destination, originator: core.me)) 
+        }
+        
+        println "waiting for results to arrive"
+        Thread.sleep(resultWait * 1000)
+        
+        core.eventBus.register(DownloadStartedEvent.class, new DownloadListener())
+        resultsListeners.each { uuid, resultsListener ->
+            println "starting download of $resultsListener.fileName from ${resultsListener.getResults().size()} hosts"
+            File target = new File(resultsListener.fileName)
+            
+            core.eventBus.publish(new UIDownloadEvent(target : target, result : resultsListener.getResults()))
+        }
+        
+        Thread.sleep(1000)
+        
+        Timer timer = new Timer("stats-printer")
+        timer.schedule({
+            println "==== STATUS UPDATE ==="
+            downloaders.each {
+                int donePieces = it.donePieces()
+                int totalPieces = it.nPieces
+                int sources = it.activeWorkers.size()
+                def root = Base64.encode(it.infoHash.getRoot())
+                def state = it.getCurrentState()
+                println "file $it.file hash: $root progress: $donePieces/$totalPieces sources: $sources status: $state}"
+                it.resume()
+            }
+            println "==== END ==="
+        } as TimerTask, 60000, 60000)
+        
+        println "waiting for downloads to finish"
+        while(true) {
+            boolean allFinished = true
+            for (Downloader d : downloaders) {
+                allFinished &= d.getCurrentState() == Downloader.DownloadState.FINISHED
+            }
+            if (allFinished)
+                break
+            Thread.sleep(1000)
+        }
+        
+        println "all downloads finished"
+    }
+    
+    static class ResultsHolder {
+        final List<UIResultEvent> results = Collections.synchronizedList(new ArrayList<>())
+        String fileName
+        void add(UIResultEvent e) {
+            results.add(e)
+        }
+        List getResults() {
+            results
+        }
+    }
+    
+    static class ResultsListener {
+        UUID uuid
+        String fileName
+        public onUIResultEvent(UIResultEvent e) {
+            println "got a result for $fileName from ${e.sender.getHumanReadableName()}"
+            ResultsHolder listener = resultsListeners.get(e.uuid)
+            if (listener == null) {
+                listener = new ResultsHolder(fileName : fileName)
+                resultsListeners.put(e.uuid, listener)
+            }
+            listener.add(e)
+        }
+    }
+    
+    static class ConnectionWaiter {
+        CountDownLatch latch
+        public void onConnectionEvent(ConnectionEvent e) {
+            if (e.status == ConnectionAttemptStatus.SUCCESSFUL)
+                latch.countDown()
+        }
+    }
+    
+
+    static class DownloadListener {
+        public void onDownloadStartedEvent(DownloadStartedEvent e) {
+            downloaders.add(e.downloader)
+        }
+    }
+}

core/src/main/groovy/com/muwire/core/Core.groovy

@@ -12,6 +12,7 @@ import com.muwire.core.connection.I2PConnector
 import com.muwire.core.connection.LeafConnectionManager
 import com.muwire.core.connection.UltrapeerConnectionManager
 import com.muwire.core.download.DownloadManager
+import com.muwire.core.download.UIDownloadCancelledEvent
 import com.muwire.core.download.UIDownloadEvent
 import com.muwire.core.files.FileDownloadedEvent
 import com.muwire.core.files.FileHashedEvent
@@ -32,6 +33,7 @@ import com.muwire.core.search.SearchEvent
 import com.muwire.core.search.SearchManager
 import com.muwire.core.trust.TrustEvent
 import com.muwire.core.trust.TrustService
+import com.muwire.core.update.UpdateClient
 import com.muwire.core.upload.UploadManager
 import com.muwire.core.util.MuWireLogManager
 
@@ -55,18 +57,23 @@ public class Core {
     final EventBus eventBus
     final Persona me
     final File home
+    final Properties i2pOptions
+    final MuWireSettings muOptions
     
     private final TrustService trustService
     private final PersisterService persisterService
     private final HostCache hostCache
     private final ConnectionManager connectionManager
     private final CacheClient cacheClient
+    private final UpdateClient updateClient
     private final ConnectionAcceptor connectionAcceptor
     private final ConnectionEstablisher connectionEstablisher
     private final HasherService hasherService
+    private final DownloadManager downloadManager
         
-    public Core(MuWireSettings props, File home) {
+    public Core(MuWireSettings props, File home, String myVersion) {
         this.home = home		
+        this.muOptions = props
         log.info "Initializing I2P context"
         I2PAppContext.getGlobalContext().logManager()
         I2PAppContext.getGlobalContext()._logManager = new MuWireLogManager()
@@ -81,12 +88,31 @@ public class Core {
 			}
 		}
 		
-		def sysProps = System.getProperties().clone()
-		sysProps["inbound.nickname"] = "MuWire"
+        i2pOptions = new Properties()
+        def i2pOptionsFile = new File(home,"i2p.properties")
+        if (i2pOptionsFile.exists()) {
+            i2pOptionsFile.withInputStream { i2pOptions.load(it) }
+
+            if (!i2pOptions.containsKey("inbound.nickname"))
+                i2pOptions["inbound.nickname"] = "MuWire"
+            if (!i2pOptions.containsKey("outbound.nickname"))
+                i2pOptions["outbound.nickname"] = "MuWire"
+        } else {
+            i2pOptions["inbound.nickname"] = "MuWire"
+            i2pOptions["outbound.nickname"] = "MuWire"
+            i2pOptions["inbound.length"] = "3"
+            i2pOptions["inbound.quantity"] = "2"
+            i2pOptions["outbound.length"] = "3"
+            i2pOptions["outbound.quantity"] = "2"
+            i2pOptions["i2cp.tcp.host"] = "127.0.0.1"
+            i2pOptions["i2cp.tcp.port"] = "7654"
+        }
+        
+        // options like tunnel length and quantity
 		I2PSession i2pSession
 		I2PSocketManager socketManager
 		keyDat.withInputStream {
-			socketManager = new I2PSocketManagerFactory().createManager(it, sysProps)
+			socketManager = new I2PSocketManagerFactory().createManager(it, i2pOptions["i2cp.tcp.host"], i2pOptions["i2cp.tcp.port"].toInteger(), i2pOptions)
 		}
 		socketManager.getDefaultOptions().setReadTimeout(60000)
 		socketManager.getDefaultOptions().setConnectTimeout(30000)
@@ -127,7 +153,7 @@ public class Core {
 		
 		
 		log.info "initializing file manager"
-		FileManager fileManager = new FileManager(eventBus)
+		FileManager fileManager = new FileManager(eventBus, props)
 		eventBus.register(FileHashedEvent.class, fileManager)
 		eventBus.register(FileLoadedEvent.class, fileManager)
 		eventBus.register(FileDownloadedEvent.class, fileManager)
@@ -135,7 +161,7 @@ public class Core {
 		eventBus.register(SearchEvent.class, fileManager)
 		
 		log.info "initializing persistence service"
-		persisterService = new PersisterService(new File(home, "files.json"), eventBus, 5000, fileManager)
+		persisterService = new PersisterService(new File(home, "files.json"), eventBus, 15000, fileManager)
         
 		log.info("initializing host cache")
 		File hostStorage = new File(home, "hosts.json")
@@ -145,7 +171,8 @@ public class Core {
 		
 		log.info("initializing connection manager")
 		connectionManager = props.isLeaf() ? 
-			new LeafConnectionManager(eventBus, me, 3, hostCache) : new UltrapeerConnectionManager(eventBus, me, 512, 512, hostCache, trustService)
+			new LeafConnectionManager(eventBus, me, 3, hostCache, props) : 
+            new UltrapeerConnectionManager(eventBus, me, 512, 512, hostCache, trustService, props)
 		eventBus.register(TrustEvent.class, connectionManager)
 		eventBus.register(ConnectionEvent.class, connectionManager)
 		eventBus.register(DisconnectionEvent.class, connectionManager)
@@ -154,6 +181,9 @@ public class Core {
 		log.info("initializing cache client")
 		cacheClient = new CacheClient(eventBus,hostCache, connectionManager, i2pSession, props, 10000)
         
+        log.info("initializing update client")
+        updateClient = new UpdateClient(eventBus, i2pSession, myVersion, props)
+        
 		log.info("initializing connector")
 		I2PConnector i2pConnector = new I2PConnector(socketManager)
         
@@ -166,23 +196,26 @@ public class Core {
 		eventBus.register(ResultsEvent.class, searchManager)
 		
         log.info("initializing download manager")
-        DownloadManager downloadManager = new DownloadManager(eventBus, i2pConnector, new File(home, "incompletes"), me)
+        downloadManager = new DownloadManager(eventBus, i2pConnector, home, me)
         eventBus.register(UIDownloadEvent.class, downloadManager)
+        eventBus.register(UILoadedEvent.class, downloadManager)
+        eventBus.register(FileDownloadedEvent.class, downloadManager)
+        eventBus.register(UIDownloadCancelledEvent.class, downloadManager)
         
         log.info("initializing upload manager")
         UploadManager uploadManager = new UploadManager(eventBus, fileManager)
         
+        log.info("initializing connection establisher")
+        connectionEstablisher = new ConnectionEstablisher(eventBus, i2pConnector, props, connectionManager, hostCache)
         
 		log.info("initializing acceptor")
 		I2PAcceptor i2pAcceptor = new I2PAcceptor(socketManager)
 		connectionAcceptor = new ConnectionAcceptor(eventBus, connectionManager, props, 
-            i2pAcceptor, hostCache, trustService, searchManager, uploadManager)
+            i2pAcceptor, hostCache, trustService, searchManager, uploadManager, connectionEstablisher)
 		
         
-        connectionEstablisher = new ConnectionEstablisher(eventBus, i2pConnector, props, connectionManager, hostCache)
-        
         log.info("initializing hasher service")
-        hasherService = new HasherService(new FileHasher(), eventBus)
+        hasherService = new HasherService(new FileHasher(), eventBus, fileManager)
         eventBus.register(FileSharedEvent.class, hasherService)
 	}
     
@@ -197,9 +230,17 @@ public class Core {
         connectionAcceptor.start()
         connectionEstablisher.start()
         hostCache.waitForLoad()
+        updateClient.start()
     }
     
     public void shutdown() {
+        log.info("shutting down download manageer")
+        downloadManager.shutdown()
+        log.info("shutting down connection acceeptor")
+        connectionAcceptor.stop()
+        log.info("shutting down connection establisher")
+        connectionEstablisher.stop()
+        log.info("shutting down connection manager")
         connectionManager.shutdown()
     }
 
@@ -227,7 +268,7 @@ public class Core {
             }
         }
         
-        Core core = new Core(props, home)
+        Core core = new Core(props, home, "0.2.1")
         core.startServices()
         
         // ... at the end, sleep or execute script

core/src/main/groovy/com/muwire/core/EventBus.groovy

@@ -3,6 +3,7 @@ package com.muwire.core
 import java.util.concurrent.CopyOnWriteArrayList
 import java.util.concurrent.Executor
 import java.util.concurrent.Executors
+import java.util.logging.Level
 
 import com.muwire.core.files.FileSharedEvent
 
@@ -23,14 +24,18 @@ class EventBus {
 	}
 	
 	private void publishInternal(Event e) {
-		log.fine "publishing event $e of type ${e.getClass().getSimpleName()}"
+		log.fine "publishing event $e of type ${e.getClass().getSimpleName()} event $e"
 		def currentHandlers
 		final def clazz = e.getClass()
 		synchronized(this) {
 			currentHandlers = handlers.getOrDefault(clazz, [])
 		}
 		currentHandlers.each {
-			it."on${clazz.getSimpleName()}"(e)
+            try {
+                it."on${clazz.getSimpleName()}"(e)
+            } catch (Exception bad) {
+                log.log(Level.SEVERE, "exception dispatching event",bad)
+            }
 		}
 	}
 	

core/src/main/groovy/com/muwire/core/MuWireSettings.groovy

@@ -7,10 +7,13 @@ class MuWireSettings {
     final boolean isLeaf
     boolean allowUntrusted
     int downloadRetryInterval
+    int updateCheckInterval
     String nickname
     File downloadLocation
     String sharedFiles
     CrawlerResponse crawlerResponse
+    boolean shareDownloadedFiles
+    boolean watchSharedDirectories
     
 	MuWireSettings() {
         this(new Properties())
@@ -25,6 +28,9 @@ class MuWireSettings {
             System.getProperty("user.home")))
         sharedFiles = props.getProperty("sharedFiles")
         downloadRetryInterval = Integer.parseInt(props.getProperty("downloadRetryInterval","15"))
+        updateCheckInterval = Integer.parseInt(props.getProperty("updateCheckInterval","36"))
+        shareDownloadedFiles = Boolean.parseBoolean(props.getProperty("shareDownloadedFiles","true"))
+        watchSharedDirectories = Boolean.parseBoolean(props.getProperty("watchSharedDirectories","true"))
 	}
     
     void write(OutputStream out) throws IOException {
@@ -34,7 +40,10 @@ class MuWireSettings {
         props.setProperty("crawlerResponse", crawlerResponse.toString())
         props.setProperty("nickname", nickname)
         props.setProperty("downloadLocation", downloadLocation.getAbsolutePath())
-        props.setProperty("downloadRetryInterval", "15")
+        props.setProperty("downloadRetryInterval", String.valueOf(downloadRetryInterval))
+        props.setProperty("updateCheckInterval", String.valueOf(updateCheckInterval))
+        props.setProperty("shareDownloadedFiles", String.valueOf(shareDownloadedFiles))
+        props.setProperty("watchSharedDirectories", String.valueOf(watchSharedDirectories))
         if (sharedFiles != null)
             props.setProperty("sharedFiles", sharedFiles)
         props.store(out, "")

core/src/main/groovy/com/muwire/core/UILoadedEvent.groovy

@@ -0,0 +1,4 @@
+package com.muwire.core
+
+class UILoadedEvent extends Event {
+}

core/src/main/groovy/com/muwire/core/connection/Connection.groovy

@@ -6,6 +6,8 @@ import java.util.concurrent.atomic.AtomicBoolean
 import java.util.logging.Level
 
 import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
+import com.muwire.core.Persona
 import com.muwire.core.hostcache.HostCache
 import com.muwire.core.hostcache.HostDiscoveredEvent
 import com.muwire.core.search.QueryEvent
@@ -14,6 +16,7 @@ import com.muwire.core.trust.TrustLevel
 import com.muwire.core.trust.TrustService
 
 import groovy.util.logging.Log
+import net.i2p.data.Base64
 import net.i2p.data.Destination
 
 @Log
@@ -24,7 +27,8 @@ abstract class Connection implements Closeable {
 	final boolean incoming
 	final HostCache hostCache
     final TrustService trustService
-	
+    final MuWireSettings settings
+    	
 	private final AtomicBoolean running = new AtomicBoolean()
 	private final BlockingQueue messages = new LinkedBlockingQueue()
 	private final Thread reader, writer
@@ -33,12 +37,14 @@ abstract class Connection implements Closeable {
 	
 	long lastPingSentTime, lastPongReceivedTime
 	
-	Connection(EventBus eventBus, Endpoint endpoint, boolean incoming, HostCache hostCache, TrustService trustService) {
+	Connection(EventBus eventBus, Endpoint endpoint, boolean incoming, 
+        HostCache hostCache, TrustService trustService, MuWireSettings settings) {
 		this.eventBus = eventBus
 		this.incoming = incoming
 		this.endpoint = endpoint
 		this.hostCache = hostCache
         this.trustService = trustService
+        this.settings = settings
 		
 		this.name = endpoint.destination.toBase32().substring(0,8)
 		
@@ -70,9 +76,9 @@ abstract class Connection implements Closeable {
 			return
 		}
         log.info("closing $name")
-        endpoint.close()
 		reader.interrupt()
 		writer.interrupt()
+		endpoint.close()
 		eventBus.publish(new DisconnectionEvent(destination: endpoint.destination))
 	}
 	
@@ -120,9 +126,13 @@ abstract class Connection implements Closeable {
         query.version = 1
         query.uuid = e.searchEvent.getUuid()
         query.firstHop = e.firstHop
-        // TODO: first hop figure out
         query.keywords = e.searchEvent.getSearchTerms()
-        query.replyTo = e.getReceivedOn().toBase64()
+        query.oobInfohash = e.searchEvent.oobInfohash
+        if (e.searchEvent.searchHash != null)
+            query.infohash = Base64.encode(e.searchEvent.searchHash)
+        query.replyTo = e.replyTo.toBase64()
+        if (e.originator != null)
+            query.originator = e.originator.toBase64()
         messages.put(query)
     }
 	
@@ -148,21 +158,43 @@ abstract class Connection implements Closeable {
     
     protected void handleSearch(def search) {
         UUID uuid = UUID.fromString(search.uuid)
-        if (search.infohash != null)
+        byte [] infohash = null
+        if (search.infohash != null) {
             search.keywords = null
+            infohash = Base64.decode(search.infohash)
+        }
             
         Destination replyTo = new Destination(search.replyTo)
-        if (trustService.getLevel(replyTo) == TrustLevel.DISTRUSTED) {
+        TrustLevel trustLevel = trustService.getLevel(replyTo)
+        if (trustLevel == TrustLevel.DISTRUSTED) {
             log.info "dropping search from distrusted peer"
             return
         }
-        // TODO: add option to respond only to trusted peers
+        if (trustLevel == TrustLevel.NEUTRAL && !settings.allowUntrusted()) {
+            log.info("dropping search from neutral peer")
+            return
+        }
+        
+        Persona originator = null
+        if (search.originator != null) {
+            originator = new Persona(new ByteArrayInputStream(Base64.decode(search.originator)))
+            if (originator.destination != replyTo) {
+                log.info("originator doesn't match destination")
+                return
+            }
+        }
+        
+        boolean oob = false
+        if (search.oobInfohash != null)
+            oob = search.oobInfohash
         
         SearchEvent searchEvent = new SearchEvent(searchTerms : search.keywords,
-                                            searchHash : search.infohash,
-                                            uuid : uuid)
+                                            searchHash : infohash,
+                                            uuid : uuid,
+                                            oobInfohash : oob)
         QueryEvent event = new QueryEvent ( searchEvent : searchEvent,
                                             replyTo : replyTo,
+                                            originator : originator,
                                             receivedOn : endpoint.destination,
                                             firstHop : search.firstHop )
         eventBus.publish(event)

core/src/main/groovy/com/muwire/core/connection/ConnectionAcceptor.groovy

@@ -34,13 +34,17 @@ class ConnectionAcceptor {
 	final TrustService trustService
     final SearchManager searchManager 
     final UploadManager uploadManager
+    final ConnectionEstablisher establisher
 	
 	final ExecutorService acceptorThread
 	final ExecutorService handshakerThreads
+    
+    private volatile shutdown
 	
 	ConnectionAcceptor(EventBus eventBus, UltrapeerConnectionManager manager,
 		MuWireSettings settings, I2PAcceptor acceptor, HostCache hostCache,
-		TrustService trustService, SearchManager searchManager, UploadManager uploadManager) {
+		TrustService trustService, SearchManager searchManager, UploadManager uploadManager,
+        ConnectionEstablisher establisher) {
 		this.eventBus = eventBus
 		this.manager = manager
 		this.settings = settings
@@ -49,7 +53,8 @@ class ConnectionAcceptor {
 		this.trustService = trustService
         this.searchManager = searchManager
         this.uploadManager = uploadManager
-		
+		this.establisher = establisher
+        
 		acceptorThread = Executors.newSingleThreadExecutor { r -> 
 			def rv = new Thread(r)
 			rv.setDaemon(true)
@@ -70,11 +75,13 @@ class ConnectionAcceptor {
 	}
 	
 	void stop() {
+        shutdown = true
 		acceptorThread.shutdownNow()
 		handshakerThreads.shutdownNow()
 	}
 	
 	private void acceptLoop() {
+        try {
 		while(true) {
 			def incoming = acceptor.accept()
 			log.info("accepted connection from ${incoming.destination.toBase32()}")
@@ -90,6 +97,11 @@ class ConnectionAcceptor {
 			}
 			handshakerThreads.execute({processIncoming(incoming)} as Runnable)
 		}
+        } catch (Exception e) {
+            log.log(Level.WARNING, "exception in accept loop",e)
+            if (!shutdown)
+                throw e
+        }
 	}
 	
 	private void processIncoming(Endpoint e) {
@@ -105,6 +117,9 @@ class ConnectionAcceptor {
 				case (byte)'G':
 					processGET(e)
 					break
+                case (byte)'H':
+                    processHashList(e)
+                    break
                 case (byte)'P':
                     processPOST(e)
                     break
@@ -140,7 +155,9 @@ class ConnectionAcceptor {
     }
 
 	private void handleIncoming(Endpoint e, boolean leaf) {
-		boolean accept = !manager.isConnected(e.destination) && (leaf ? manager.hasLeafSlots() : manager.hasPeerSlots())
+		boolean accept = !manager.isConnected(e.destination) && 
+            !establisher.isInProgress(e.destination) &&
+            (leaf ? manager.hasLeafSlots() : manager.hasPeerSlots())
 		if (accept) {
 			log.info("accepting connection, leaf:$leaf")
 			e.outputStream.write("OK".bytes)
@@ -173,9 +190,18 @@ class ConnectionAcceptor {
         dis.readFully(et)
         if (et != "ET ".getBytes(StandardCharsets.US_ASCII))
             throw new IOException("Invalid GET connection")
-        uploadManager.processEndpoint(e)
+        uploadManager.processGET(e)
 	}
     
+    private void processHashList(Endpoint e) {
+        byte[] ashList = new byte[8]
+        final DataInputStream dis = new DataInputStream(e.getInputStream())
+        dis.readFully(ashList)
+        if (ashList != "ASHLIST ".getBytes(StandardCharsets.US_ASCII))
+            throw new IOException("Invalid HASHLIST connection")
+        uploadManager.processHashList(e)
+    }
+    
     private void processPOST(final Endpoint e) throws IOException {
         byte [] ost = new byte[4]
         final DataInputStream dis = new DataInputStream(e.getInputStream())

core/src/main/groovy/com/muwire/core/connection/ConnectionEstablisher.groovy

@@ -35,6 +35,8 @@ class ConnectionEstablisher {
 	
 	final Set inProgress = new ConcurrentHashSet()
 	
+    ConnectionEstablisher(){}
+    
 	ConnectionEstablisher(EventBus eventBus, I2PConnector i2pConnector, MuWireSettings settings,
 		ConnectionManager connectionManager, HostCache hostCache) {
 		this.eventBus = eventBus
@@ -176,4 +178,8 @@ class ConnectionEstablisher {
 			e.close()
 		}
 	}
+    
+    public boolean isInProgress(Destination d) {
+        inProgress.contains(d)
+    }
 }

core/src/main/groovy/com/muwire/core/connection/ConnectionManager.groovy

@@ -1,6 +1,7 @@
 package com.muwire.core.connection
 
 import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
 import com.muwire.core.Persona
 import com.muwire.core.hostcache.HostCache
 import com.muwire.core.search.QueryEvent
@@ -19,13 +20,15 @@ abstract class ConnectionManager {
 	
 	protected final HostCache hostCache
     protected final Persona me
+    protected final MuWireSettings settings
 	
 	ConnectionManager() {}
 	
-	ConnectionManager(EventBus eventBus, Persona me, HostCache hostCache) {
+	ConnectionManager(EventBus eventBus, Persona me, HostCache hostCache, MuWireSettings settings) {
 		this.eventBus = eventBus
         this.me = me
 		this.hostCache = hostCache
+        this.settings = settings
 		this.timer = new Timer("connections-pinger",true)
 	}
 	

core/src/main/groovy/com/muwire/core/connection/Endpoint.groovy

@@ -34,7 +34,7 @@ class Endpoint implements Closeable {
 			try {outputStream.close()} catch (Exception ignore) {}
 		}
         if (toClose != null) {
-            try {toClose.close()} catch (Exception ignore) {}
+            try {toClose.reset()} catch (Exception ignore) {}
         }
 	}
 	

core/src/main/groovy/com/muwire/core/connection/LeafConnection.groovy

@@ -4,6 +4,7 @@ import java.io.InputStream
 import java.io.OutputStream
 
 import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
 import com.muwire.core.hostcache.HostCache
 import com.muwire.core.trust.TrustService
 
@@ -16,8 +17,9 @@ import net.i2p.data.Destination
  */
 class LeafConnection extends Connection {
 
-	public LeafConnection(EventBus eventBus, Endpoint endpoint, HostCache hostCache, TrustService trustService) {
-		super(eventBus, endpoint, true, hostCache, trustService);
+	public LeafConnection(EventBus eventBus, Endpoint endpoint, HostCache hostCache, 
+        TrustService trustService, MuWireSettings settings) {
+		super(eventBus, endpoint, true, hostCache, trustService, settings);
 	}
 
 	@Override

core/src/main/groovy/com/muwire/core/connection/LeafConnectionManager.groovy

@@ -3,6 +3,7 @@ package com.muwire.core.connection
 import java.util.concurrent.ConcurrentHashMap
 
 import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
 import com.muwire.core.Persona
 import com.muwire.core.hostcache.HostCache
 import com.muwire.core.search.QueryEvent
@@ -17,8 +18,9 @@ class LeafConnectionManager extends ConnectionManager {
 	
 	final Map<Destination, UltrapeerConnection> connections = new ConcurrentHashMap()
 	
-	public LeafConnectionManager(EventBus eventBus, Persona me, int maxConnections, HostCache hostCache) {
-		super(eventBus, me, hostCache)
+	public LeafConnectionManager(EventBus eventBus, Persona me, int maxConnections, 
+        HostCache hostCache, MuWireSettings settings) {
+		super(eventBus, me, hostCache, settings)
 		this.maxConnections = maxConnections
 	}
 	

core/src/main/groovy/com/muwire/core/connection/PeerConnection.groovy

@@ -4,6 +4,7 @@ import java.io.InputStream
 import java.io.OutputStream
 
 import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
 import com.muwire.core.hostcache.HostCache
 import com.muwire.core.trust.TrustService
 import com.muwire.core.util.DataUtil
@@ -29,8 +30,9 @@ class PeerConnection extends Connection {
 	private final JsonSlurper slurper = new JsonSlurper()
 
 	public PeerConnection(EventBus eventBus, Endpoint endpoint,
-			boolean incoming, HostCache hostCache, TrustService trustService) {
-		super(eventBus, endpoint, incoming, hostCache, trustService)
+			boolean incoming, HostCache hostCache, TrustService trustService,
+            MuWireSettings settings) {
+		super(eventBus, endpoint, incoming, hostCache, trustService, settings)
 		this.dis = new DataInputStream(endpoint.inputStream)
 		this.dos = new DataOutputStream(endpoint.outputStream)
 	}

core/src/main/groovy/com/muwire/core/connection/UltrapeerConnectionManager.groovy

@@ -4,6 +4,7 @@ import java.util.Collection
 import java.util.concurrent.ConcurrentHashMap
 
 import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
 import com.muwire.core.Persona
 import com.muwire.core.hostcache.HostCache
 import com.muwire.core.search.QueryEvent
@@ -17,15 +18,15 @@ class UltrapeerConnectionManager extends ConnectionManager {
 	
 	final int maxPeers, maxLeafs
     final TrustService trustService
-	
+    
 	final Map<Destination, PeerConnection> peerConnections = new ConcurrentHashMap()
 	final Map<Destination, LeafConnection> leafConnections = new ConcurrentHashMap()
     
 	UltrapeerConnectionManager() {}
 
 	public UltrapeerConnectionManager(EventBus eventBus, Persona me, int maxPeers, int maxLeafs, 
-        HostCache hostCache, TrustService trustService) {
-		super(eventBus, me, hostCache)
+        HostCache hostCache, TrustService trustService, MuWireSettings settings) {
+		super(eventBus, me, hostCache, settings)
 		this.maxPeers = maxPeers
 		this.maxLeafs = maxLeafs
         this.trustService = trustService
@@ -85,8 +86,8 @@ class UltrapeerConnectionManager extends ConnectionManager {
 			return
 		
 		Connection c = e.leaf ? 
-			new LeafConnection(eventBus, e.endpoint, hostCache, trustService) : 
-			new PeerConnection(eventBus, e.endpoint, e.incoming, hostCache, trustService)
+			new LeafConnection(eventBus, e.endpoint, hostCache, trustService, settings) : 
+			new PeerConnection(eventBus, e.endpoint, e.incoming, hostCache, trustService, settings)
 		def map = e.leaf ? leafConnections : peerConnections
 		map.put(e.endpoint.destination, c)
 		c.start()
@@ -103,8 +104,8 @@ class UltrapeerConnectionManager extends ConnectionManager {
     
     @Override
     void shutdown() {
-        peerConnections.each {k,v -> v.close() }
-        leafConnections.each {k,v -> v.close() }
+        peerConnections.values().stream().parallel().forEach({v -> v.close()})
+        leafConnections.values().stream().parallel().forEach({v -> v.close()})
         peerConnections.clear()
         leafConnections.clear()
     }

core/src/main/groovy/com/muwire/core/download/DownloadManager.groovy

@@ -1,11 +1,21 @@
 package com.muwire.core.download
 
 import com.muwire.core.connection.I2PConnector
+import com.muwire.core.files.FileDownloadedEvent
+import com.muwire.core.files.FileHasher
+import com.muwire.core.util.DataUtil
 
+import groovy.json.JsonBuilder
+import groovy.json.JsonOutput
+import groovy.json.JsonSlurper
 import net.i2p.data.Base64
+import net.i2p.data.Destination
+import net.i2p.util.ConcurrentHashSet
 
 import com.muwire.core.EventBus
+import com.muwire.core.InfoHash
 import com.muwire.core.Persona
+import com.muwire.core.UILoadedEvent
 
 import java.util.concurrent.Executor
 import java.util.concurrent.Executors
@@ -15,17 +25,17 @@ public class DownloadManager {
     private final EventBus eventBus
     private final I2PConnector connector
     private final Executor executor
-    private final File incompletes
-    private final String meB64
+    private final File incompletes, home
+    private final Persona me
     
-    public DownloadManager(EventBus eventBus, I2PConnector connector, File incompletes, Persona me) {
+    private final Set<Downloader> downloaders = new ConcurrentHashSet<>()
+    
+    public DownloadManager(EventBus eventBus, I2PConnector connector, File home, Persona me) {
         this.eventBus = eventBus
         this.connector = connector
-        this.incompletes = incompletes
-        
-        def baos = new ByteArrayOutputStream()
-        me.write(baos)
-        this.meB64 = Base64.encode(baos.toByteArray())
+        this.incompletes = new File(home,"incompletes")
+        this.home = home
+        this.me = me
         
         incompletes.mkdir()
         
@@ -39,14 +49,95 @@ public class DownloadManager {
     
     
     public void onUIDownloadEvent(UIDownloadEvent e) {
-        def downloader = new Downloader(this, meB64, e.target, e.result.size,
-            e.result.infohash, e.result.pieceSize, connector, e.result.sender.destination,
+        
+        def size = e.result[0].size
+        def infohash = e.result[0].infohash
+        def pieceSize = e.result[0].pieceSize
+        
+        Set<Destination> destinations = new HashSet<>()
+        e.result.each { 
+            destinations.add(it.sender.destination)
+        }
+        
+        def downloader = new Downloader(eventBus, this, me, e.target, size,
+            infohash, pieceSize, connector, destinations,
             incompletes)
+        downloaders.add(downloader)
+        persistDownloaders()
         executor.execute({downloader.download()} as Runnable)
         eventBus.publish(new DownloadStartedEvent(downloader : downloader))
     }
     
+    public void onUIDownloadCancelledEvent(UIDownloadCancelledEvent e) {
+        downloaders.remove(e.downloader)
+        persistDownloaders()
+    }
+    
     void resume(Downloader downloader) {
         executor.execute({downloader.download() as Runnable})
     }
+    
+    void onUILoadedEvent(UILoadedEvent e) {
+        File downloadsFile = new File(home, "downloads.json")
+        if (!downloadsFile.exists())
+            return
+        def slurper = new JsonSlurper()
+        downloadsFile.eachLine {
+            def json = slurper.parseText(it)
+            File file = new File(DataUtil.readi18nString(Base64.decode(json.file)))
+            def destinations = new HashSet<>()
+            json.destinations.each { destination -> 
+                destinations.add new Destination(destination)
+            }
+            InfoHash infoHash
+            if (json.hashList != null) {
+                byte[] hashList = Base64.decode(json.hashList)
+                infoHash = InfoHash.fromHashList(hashList)
+            } else {
+                byte [] root = Base64.decode(json.hashRoot)
+                infoHash = new InfoHash(root)
+            }
+            def downloader = new Downloader(eventBus, this, me, file, (long)json.length,
+                infoHash, json.pieceSizePow2, connector, destinations, incompletes)
+            downloaders.add(downloader)
+            downloader.download()
+            eventBus.publish(new DownloadStartedEvent(downloader : downloader))
+        }
+    }
+    
+    void onFileDownloadedEvent(FileDownloadedEvent e) {
+        downloaders.remove(e.downloader)
+        persistDownloaders()
+    }
+    
+    private void persistDownloaders() {
+        File downloadsFile = new File(home,"downloads.json")
+        downloadsFile.withPrintWriter { writer -> 
+            downloaders.each { downloader ->
+                if (!downloader.cancelled) {
+                    def json = [:]
+                    json.file = Base64.encode(DataUtil.encodei18nString(downloader.file.getAbsolutePath()))
+                    json.length = downloader.length
+                    json.pieceSizePow2 = downloader.pieceSizePow2
+                    def destinations = []
+                    downloader.destinations.each {
+                        destinations << it.toBase64()
+                    }
+                    json.destinations = destinations
+                    
+                    InfoHash infoHash = downloader.getInfoHash()
+                    if (infoHash.hashList != null)
+                        json.hashList = Base64.encode(infoHash.hashList)
+                    else
+                        json.hashRoot = Base64.encode(infoHash.getRoot())
+                    writer.println(JsonOutput.toJson(json))
+                }
+            }
+        }
+    }
+    
+    public void shutdown() {
+        downloaders.each { it.stop() }
+        Downloader.executorService.shutdownNow()
+    }
 }

core/src/main/groovy/com/muwire/core/download/DownloadSession.groovy

@@ -20,8 +20,10 @@ import java.security.NoSuchAlgorithmException
 @Log
 class DownloadSession {
     
+    private static int SAMPLES = 10
+    
     private final String meB64
-    private final Pieces pieces
+    private final Pieces downloaded, claimed
     private final InfoHash infoHash
     private final Endpoint endpoint
     private final File file
@@ -29,12 +31,16 @@ class DownloadSession {
     private final long fileLength
     private final MessageDigest digest
     
+    private final LinkedList<Long> timestamps = new LinkedList<>()
+    private final LinkedList<Integer> reads = new LinkedList<>()
+    
     private ByteBuffer mapped
     
-    DownloadSession(String meB64, Pieces pieces, InfoHash infoHash, Endpoint endpoint, File file, 
+    DownloadSession(String meB64, Pieces downloaded, Pieces claimed, InfoHash infoHash, Endpoint endpoint, File file, 
         int pieceSize, long fileLength) {
         this.meB64 = meB64
-        this.pieces = pieces
+        this.downloaded = downloaded
+        this.claimed = claimed
         this.endpoint = endpoint
         this.infoHash = infoHash
         this.file = file
@@ -48,11 +54,31 @@ class DownloadSession {
         }
     }
     
-    public void request() throws IOException {
+    /**
+     * @return if the request will proceed.  The only time it may not
+     * is if all the pieces have been claimed by other sessions.
+     * @throws IOException
+     */
+    public boolean request() throws IOException {
         OutputStream os = endpoint.getOutputStream()
         InputStream is = endpoint.getInputStream()
         
-        int piece = pieces.getRandomPiece()
+        int piece
+        while(true) {
+            piece = downloaded.getRandomPiece()
+            if (claimed.isMarked(piece)) {
+                if (downloaded.donePieces() + claimed.donePieces() == downloaded.nPieces) {
+                    log.info("all pieces claimed")
+                    return false
+                }
+                continue
+            }
+            break
+        }
+        claimed.markDownloaded(piece)
+        
+        log.info("will download piece $piece")
+        
         long start = piece * pieceSize
         long end = Math.min(fileLength, start + pieceSize) - 1
         long length = end - start + 1
@@ -80,7 +106,7 @@ class DownloadSession {
             if (!code.startsWith("200 ")) {
                 log.warning("unknown code $code")
                 endpoint.close()
-                return
+                return false
             }
 
             // parse all headers
@@ -105,7 +131,7 @@ class DownloadSession {
             if (receivedStart != start || receivedEnd != end) {
                 log.warning("We don't support mismatching ranges yet")
                 endpoint.close()
-                return
+                return false
             }
             
             // start the download
@@ -122,6 +148,13 @@ class DownloadSession {
                     throw new IOException()
                 synchronized(this) {
                     mapped.put(tmp, 0, read)
+                    
+                    if (timestamps.size() == SAMPLES) {
+                        timestamps.removeFirst()
+                        reads.removeFirst()
+                    }
+                    timestamps.addLast(System.currentTimeMillis())
+                    reads.addLast(read)
                 }
             }
             
@@ -133,10 +166,12 @@ class DownloadSession {
             if (hash != expected) 
                 throw new BadHashException()
             
-            pieces.markDownloaded(piece)        
+            downloaded.markDownloaded(piece)        
         } finally {
+            claimed.clear(piece)
             try { channel?.close() } catch (IOException ignore) {}
         }
+        return true
     }
     
     synchronized int positionInPiece() {
@@ -144,4 +179,26 @@ class DownloadSession {
             return 0
         mapped.position()
     }
+    
+    synchronized int speed() {
+        if (timestamps.size() < SAMPLES)
+            return 0
+        int totalRead = 0
+        int idx = 0
+        final long now = System.currentTimeMillis()
+        
+        while(idx < SAMPLES && timestamps.get(idx) < now - 1000)
+            idx++
+        if (idx == SAMPLES)
+            return 0
+        if (idx == SAMPLES - 1)
+            return reads[idx]
+            
+        long interval = timestamps.last - timestamps[idx]
+        if (interval == 0) 
+            interval = 1
+        for (int i = idx; i < SAMPLES; i++)
+            totalRead += reads[idx]
+        (int)(totalRead * 1000.0 / interval)
+    }
 }

core/src/main/groovy/com/muwire/core/download/Downloader.groovy

@@ -1,49 +1,68 @@
 package com.muwire.core.download
 
 import com.muwire.core.InfoHash
+import com.muwire.core.Persona
 import com.muwire.core.connection.Endpoint
 
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.ExecutorService
+import java.util.concurrent.Executors
 import java.util.logging.Level
 
 import com.muwire.core.Constants
+import com.muwire.core.DownloadedFile
+import com.muwire.core.EventBus
 import com.muwire.core.connection.I2PConnector
+import com.muwire.core.files.FileDownloadedEvent
 
 import groovy.util.logging.Log
 import net.i2p.data.Destination
 
 @Log
 public class Downloader {
-    public enum DownloadState { CONNECTING, DOWNLOADING, FAILED, CANCELLED, FINISHED }
+    public enum DownloadState { CONNECTING, HASHLIST, DOWNLOADING, FAILED, CANCELLED, FINISHED }
+    private enum WorkerState { CONNECTING, HASHLIST, DOWNLOADING, FINISHED}
+    
+    private static final ExecutorService executorService = Executors.newCachedThreadPool({r ->
+        Thread rv = new Thread(r)
+        rv.setName("download worker")
+        rv.setDaemon(true)
+        rv
+    })
 
+    private final EventBus eventBus
     private final DownloadManager downloadManager 
-    private final String meB64   
+    private final Persona me   
     private final File file
-    private final Pieces pieces
+    private final Pieces downloaded, claimed
     private final long length
-    private final InfoHash infoHash
+    private InfoHash infoHash
     private final int pieceSize
     private final I2PConnector connector
-    private final Destination destination
+    private final Set<Destination> destinations
     private final int nPieces
     private final File piecesFile
+    final int pieceSizePow2
+    private final Map<Destination, DownloadWorker> activeWorkers = new ConcurrentHashMap<>()
+    
     
-    private Endpoint endpoint
-    private volatile DownloadSession currentSession
-    private volatile DownloadState currentState
     private volatile boolean cancelled
-    private volatile Thread downloadThread
-    
-    public Downloader(DownloadManager downloadManager, String meB64, File file, long length, InfoHash infoHash, 
-        int pieceSizePow2, I2PConnector connector, Destination destination,
+    private volatile boolean eventFired
+
+    public Downloader(EventBus eventBus, DownloadManager downloadManager, 
+        Persona me, File file, long length, InfoHash infoHash, 
+        int pieceSizePow2, I2PConnector connector, Set<Destination> destinations,
         File incompletes) {
-        this.meB64 = meB64
+        this.eventBus = eventBus
+        this.me = me
         this.downloadManager = downloadManager
         this.file = file
         this.infoHash = infoHash
         this.length = length
         this.connector = connector
-        this.destination = destination
+        this.destinations = destinations
         this.piecesFile = new File(incompletes, file.getName()+".pieces")
+        this.pieceSizePow2 = pieceSizePow2
         this.pieceSize = 1 << pieceSizePow2
         
         int nPieces
@@ -53,72 +72,197 @@ public class Downloader {
             nPieces = length / pieceSize + 1
         this.nPieces = nPieces
         
-        pieces = new Pieces(nPieces, Constants.DOWNLOAD_SEQUENTIAL_RATIO)
-        currentState = DownloadState.CONNECTING
+        downloaded = new Pieces(nPieces, Constants.DOWNLOAD_SEQUENTIAL_RATIO)
+        claimed = new Pieces(nPieces)
+    }
+    
+    public synchronized InfoHash getInfoHash() {
+        infoHash
+    }
+    
+    private synchronized void setInfoHash(InfoHash infoHash) {
+        this.infoHash = infoHash
     }
     
     void download() {
         readPieces()
-        downloadThread = Thread.currentThread()
-        Endpoint endpoint = null
-        try {
-            endpoint = connector.connect(destination)
-            currentState = DownloadState.DOWNLOADING
-            while(!pieces.isComplete()) {
-                currentSession = new DownloadSession(meB64, pieces, infoHash, endpoint, file, pieceSize, length)
-                currentSession.request()
-                writePieces()
+        destinations.each {
+            if (it != me.destination) {
+                def worker = new DownloadWorker(it)
+                activeWorkers.put(it, worker)
+                executorService.submit(worker)
             }
-            currentState = DownloadState.FINISHED
-            piecesFile.delete()
-        } catch (Exception bad) {
-            log.log(Level.WARNING,"Exception while downloading",bad)
-            if (cancelled)
-                currentState = DownloadState.CANCELLED
-            else if (currentState != DownloadState.FINISHED)
-                currentState = DownloadState.FAILED
-        } finally {
-            endpoint?.close()
         }
     }
     
     void readPieces() {
         if (!piecesFile.exists())
             return
-        piecesFile.withReader { 
-            int piece = Integer.parseInt(it.readLine())
-            pieces.markDownloaded(piece)
+        piecesFile.eachLine { 
+            int piece = Integer.parseInt(it)
+            downloaded.markDownloaded(piece)
         }
     }
     
     void writePieces() {
         piecesFile.withPrintWriter { writer ->
-            pieces.getDownloaded().each { piece -> 
+            downloaded.getDownloaded().each { piece -> 
                 writer.println(piece)
             }
         }
     }
     
     public long donePieces() {
-        pieces.donePieces()
+        downloaded.donePieces()
     }
     
-    public int positionInPiece() {
-        if (currentSession == null)
-            return 0
-        currentSession.positionInPiece()
+    
+    public int speed() {
+        int total = 0
+        if (getCurrentState() == DownloadState.DOWNLOADING) {
+            activeWorkers.values().each {
+                if (it.currentState == WorkerState.DOWNLOADING)
+                    total += it.speed()
+            }
+        }
+        total
     }
     
     public DownloadState getCurrentState() {
-        currentState
+        if (cancelled)
+            return DownloadState.CANCELLED
+        boolean allFinished = true
+        activeWorkers.values().each { 
+            allFinished &= it.currentState == WorkerState.FINISHED
+        }
+        if (allFinished) {
+            if (downloaded.isComplete())
+                return DownloadState.FINISHED
+            return DownloadState.FAILED
+        }
+        
+        // if at least one is downloading...
+        boolean oneDownloading = false
+        activeWorkers.values().each { 
+            if (it.currentState == WorkerState.DOWNLOADING) {
+                oneDownloading = true
+                return 
+            }
+        }
+        
+        if (oneDownloading)
+            return DownloadState.DOWNLOADING
+        
+        // at least one is requesting hashlist
+        boolean oneHashlist = false
+        activeWorkers.values().each { 
+            if (it.currentState == WorkerState.HASHLIST) {
+                oneHashlist = true
+                return
+            }
+        }
+        if (oneHashlist)
+            return DownloadState.HASHLIST
+            
+        return DownloadState.CONNECTING
     }
     
     public void cancel() {
         cancelled = true
-        downloadThread?.interrupt()
+        stop()
+        file.delete()
+        piecesFile.delete()
+    }
+    
+    void stop() {
+        activeWorkers.values().each { 
+            it.cancel()
+        }
+    }
+    
+    public int activeWorkers() {
+        int active = 0
+        activeWorkers.values().each { 
+            if (it.currentState != WorkerState.FINISHED)
+                active++
+        }
+        active
     }
     
     public void resume() {
-        downloadManager.resume(this)
+        destinations.each { destination ->
+            def worker = activeWorkers.get(destination)
+            if (worker != null) {
+                if (worker.currentState == WorkerState.FINISHED) {
+                    def newWorker = new DownloadWorker(destination)
+                    activeWorkers.put(destination, newWorker)
+                    executorService.submit(newWorker)
+                }
+            } else {
+                worker = new DownloadWorker(destination)
+                activeWorkers.put(destination, worker)
+                executorService.submit(worker)
+            }
+        }
+    }
+    
+    class DownloadWorker implements Runnable {
+        private final Destination destination
+        private volatile WorkerState currentState
+        private volatile Thread downloadThread
+        private Endpoint endpoint
+        private volatile DownloadSession currentSession
+                
+        DownloadWorker(Destination destination) {
+            this.destination = destination
+        }
+        
+        public void run() {
+            downloadThread = Thread.currentThread()
+            currentState = WorkerState.CONNECTING
+            Endpoint endpoint = null
+            try {
+                endpoint = connector.connect(destination)
+                while(getInfoHash().hashList == null) {
+                    currentState = WorkerState.HASHLIST
+                    HashListSession session = new HashListSession(me.toBase64(), infoHash, endpoint)
+                    InfoHash received = session.request()
+                    setInfoHash(received)
+                }
+                currentState = WorkerState.DOWNLOADING
+                boolean requestPerformed
+                while(!downloaded.isComplete()) {
+                    currentSession = new DownloadSession(me.toBase64(), downloaded, claimed, getInfoHash(), endpoint, file, pieceSize, length)
+                    requestPerformed = currentSession.request()
+                    if (!requestPerformed)
+                        break
+                    writePieces()
+                }
+            } catch (Exception bad) {
+                log.log(Level.WARNING,"Exception while downloading",bad)
+            } finally {
+                currentState = WorkerState.FINISHED
+                if (downloaded.isComplete() && !eventFired) {
+                    piecesFile.delete()
+                    eventFired = true
+                    eventBus.publish(
+                        new FileDownloadedEvent(
+                            downloadedFile : new DownloadedFile(file, getInfoHash(), pieceSizePow2, Collections.emptySet()),
+                        downloader : Downloader.this))
+                            
+                } 
+                endpoint?.close()
+            }
+        }
+        
+        int speed() {
+            if (currentSession == null)
+                return 0
+            currentSession.speed()
+        }
+        
+        void cancel() {
+            downloadThread?.interrupt()
+        }
     }
 }

core/src/main/groovy/com/muwire/core/download/HashListSession.groovy

@@ -0,0 +1,82 @@
+package com.muwire.core.download
+
+import java.nio.ByteBuffer
+import java.nio.charset.StandardCharsets
+import java.security.MessageDigest
+import java.security.NoSuchAlgorithmException
+
+import com.muwire.core.Constants
+import com.muwire.core.InfoHash
+import com.muwire.core.connection.Endpoint
+
+import groovy.util.logging.Log
+
+import static com.muwire.core.util.DataUtil.readTillRN
+
+import net.i2p.data.Base64
+
+@Log
+class HashListSession {
+    private final String meB64
+    private final InfoHash infoHash
+    private final Endpoint endpoint
+    
+    HashListSession(String meB64, InfoHash infoHash, Endpoint endpoint) {
+        this.meB64 = meB64
+        this.infoHash = infoHash
+        this.endpoint = endpoint
+    }
+    
+    InfoHash request() throws IOException {
+        InputStream is = endpoint.getInputStream()
+        OutputStream os = endpoint.getOutputStream()
+        
+        String root = Base64.encode(infoHash.getRoot())
+        os.write("HASHLIST $root\r\n".getBytes(StandardCharsets.US_ASCII))
+        os.write("X-Persona: $meB64\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+        os.flush()
+        
+        String code = readTillRN(is)
+        if (!code.startsWith("200"))
+            throw new IOException("unknown code $code")
+        
+        // parse all headers
+        Set<String> headers = new HashSet<>()
+        String header
+        while((header = readTillRN(is)) != "" && headers.size() < Constants.MAX_HEADERS)
+            headers.add(header)
+            
+        long receivedStart = -1
+        long receivedEnd = -1
+        for (String receivedHeader : headers) {
+            def group = (receivedHeader =~ /^Content-Range: (\d+)-(\d+)$/)
+            if (group.size() != 1) {
+                log.info("ignoring header $receivedHeader")
+                continue
+            }
+
+            receivedStart = Long.parseLong(group[0][1])
+            receivedEnd = Long.parseLong(group[0][2])
+        }
+        
+        if (receivedStart != 0)
+            throw new IOException("hashlist started at $receivedStart")
+        
+        byte[] hashList = new byte[receivedEnd]
+        ByteBuffer hashListBuf = ByteBuffer.wrap(hashList)
+        byte[] tmp = new byte[0x1 << 13]
+        while(hashListBuf.hasRemaining()) {
+            if (hashListBuf.remaining() > tmp.length)
+                tmp = new byte[hashListBuf.remaining()]
+            int read = is.read(tmp)
+            if (read == -1)
+                throw new IOException()
+            hashListBuf.put(tmp, 0, read)
+        }
+        
+        InfoHash received = InfoHash.fromHashList(hashList)
+        if (received.getRoot() != infoHash.getRoot())
+            throw new IOException("fetched list doesn't match root")
+        received
+    }
+}

core/src/main/groovy/com/muwire/core/download/Pieces.groovy

@@ -28,7 +28,8 @@ class Pieces {
         
         while(true) {
             int start = random.nextInt(nPieces)
-            while(bitSet.get(start) && ++start < nPieces);
+            if (bitSet.get(start))
+                continue
             return start
         }
     }
@@ -45,10 +46,18 @@ class Pieces {
         bitSet.set(piece)
     }
     
+    synchronized void clear(int piece) {
+        bitSet.clear(piece)
+    }
+    
     synchronized boolean isComplete() {
         bitSet.cardinality() == nPieces
     }
     
+    synchronized boolean isMarked(int piece) {
+        bitSet.get(piece)
+    }
+    
     synchronized int donePieces() {
         bitSet.cardinality()
     }

core/src/main/groovy/com/muwire/core/download/UIDownloadCancelledEvent.groovy

@@ -0,0 +1,7 @@
+package com.muwire.core.download
+
+import com.muwire.core.Event
+
+class UIDownloadCancelledEvent extends Event {
+    Downloader downloader
+}

core/src/main/groovy/com/muwire/core/download/UIDownloadEvent.groovy

@@ -5,6 +5,6 @@ import com.muwire.core.search.UIResultEvent
 
 class UIDownloadEvent extends Event {
     
-    UIResultEvent result
+    UIResultEvent[] result
     File target
 }

core/src/main/groovy/com/muwire/core/files/AllFilesLoadedEvent.groovy

@@ -0,0 +1,6 @@
+package com.muwire.core.files
+
+import com.muwire.core.Event
+
+class AllFilesLoadedEvent extends Event {
+}

core/src/main/groovy/com/muwire/core/files/DirectoryWatcher.groovy

@@ -0,0 +1,4 @@
+package com.muwire.core.files
+
+class DirectoryWatcher {
+}

core/src/main/groovy/com/muwire/core/files/FileDownloadedEvent.groovy

@@ -2,10 +2,11 @@ package com.muwire.core.files
 
 import com.muwire.core.DownloadedFile
 import com.muwire.core.Event
+import com.muwire.core.download.Downloader
 
 import net.i2p.data.Destination
 
 class FileDownloadedEvent extends Event {
-
+    Downloader downloader
 	DownloadedFile downloadedFile
 }

core/src/main/groovy/com/muwire/core/files/FileHasher.groovy

@@ -1,6 +1,9 @@
 package com.muwire.core.files
 
 import com.muwire.core.InfoHash
+
+import net.i2p.data.Base64
+
 import java.nio.MappedByteBuffer
 import java.nio.channels.FileChannel
 import java.nio.channels.FileChannel.MapMode
@@ -17,12 +20,12 @@ class FileHasher {
 	 * @return the size of each piece in power of 2
 	 */
 	static int getPieceSize(long size) {
-		if (size <= 0x1 << 25)
-			return 18
+		if (size <= 0x1 << 30)
+			return 17
 		
-		for (int i = 26; i <= 37; i++) {
+		for (int i = 31; i <= 37; i++) {
 			if (size <= 0x1L << i) {
-				return i-7
+				return i-13
 			}
 		}
 		
@@ -52,11 +55,11 @@ class FileHasher {
 		try {
 			MappedByteBuffer buf
 			for (int i = 0; i < numPieces - 1; i++) {
-				buf = raf.getChannel().map(MapMode.READ_ONLY, size * i, size)
+				buf = raf.getChannel().map(MapMode.READ_ONLY, ((long)size) * i, size)
 				digest.update buf
 				output.write(digest.digest(), 0, 32)
 			}
-			def lastPieceLength = length - (numPieces - 1) * size
+			def lastPieceLength = length - (numPieces - 1) * ((long)size)
 			buf = raf.getChannel().map(MapMode.READ_ONLY, length - lastPieceLength, lastPieceLength)
 			digest.update buf
 			output.write(digest.digest(), 0, 32)
@@ -67,4 +70,18 @@ class FileHasher {
 		byte [] hashList = output.toByteArray()
 		InfoHash.fromHashList(hashList)
 	}
+    
+    public static void main(String[] args) {
+        if (args.length != 1) {
+            println "This utility computes an infohash of a file"
+            println "Pass absolute path to a file as an argument"
+            System.exit(1)
+        }
+        
+        def file = new File(args[0])
+        file = file.getAbsoluteFile()
+        def hasher = new FileHasher()
+        def infohash = hasher.hashFile(file)
+        println Base64.encode(infohash.getRoot())
+    }
 }

core/src/main/groovy/com/muwire/core/files/FileManager.groovy

@@ -2,7 +2,9 @@ package com.muwire.core.files
 
 import com.muwire.core.EventBus
 import com.muwire.core.InfoHash
+import com.muwire.core.MuWireSettings
 import com.muwire.core.SharedFile
+import com.muwire.core.UILoadedEvent
 import com.muwire.core.search.ResultsEvent
 import com.muwire.core.search.SearchEvent
 import com.muwire.core.search.SearchIndex
@@ -14,27 +16,31 @@ class FileManager {
 
 
 	final EventBus eventBus
+    final MuWireSettings settings
 	final Map<InfoHash, Set<SharedFile>> rootToFiles = Collections.synchronizedMap(new HashMap<>())
 	final Map<File, SharedFile> fileToSharedFile = Collections.synchronizedMap(new HashMap<>())
 	final Map<String, Set<File>> nameToFiles = new HashMap<>()
 	final SearchIndex index = new SearchIndex()
 	
-	FileManager(EventBus eventBus) {
+	FileManager(EventBus eventBus, MuWireSettings settings) {
+        this.settings = settings
 		this.eventBus = eventBus
 	}
 	
-	void onFileHashedEvent(FileHashedEvent e) {
-		if (e.sharedFile != null)
-			addToIndex(e.sharedFile)
-	}
+    void onFileHashedEvent(FileHashedEvent e) {
+        if (e.sharedFile != null)
+            addToIndex(e.sharedFile)
+    }
 	
 	void onFileLoadedEvent(FileLoadedEvent e) {
 		addToIndex(e.loadedFile)
 	}
 	
-	void onFileDownloadedEvent(FileDownloadedEvent e) {
-		addToIndex(e.downloadedFile)
-	}
+    void onFileDownloadedEvent(FileDownloadedEvent e) {
+        if (settings.shareDownloadedFiles) {
+            addToIndex(e.downloadedFile)
+        }
+    }
 	
 	private void addToIndex(SharedFile sf) {
         log.info("Adding shared file " + sf.getFile())
@@ -100,20 +106,33 @@ class FileManager {
 		if (e.searchHash != null) {
             Set<SharedFile> found
             found = rootToFiles.get new InfoHash(e.searchHash)
+            found = filter(found, e.oobInfohash)
 			if (found != null && !found.isEmpty())
-				re = new ResultsEvent(results: found.asList(), uuid: e.uuid)
+				re = new ResultsEvent(results: found.asList(), uuid: e.uuid, searchEvent: e)
 		} else {
 			def names = index.search e.searchTerms
 			Set<File> files = new HashSet<>()
 			names.each { files.addAll nameToFiles.getOrDefault(it, []) }
 			Set<SharedFile> sharedFiles = new HashSet<>()
 			files.each { sharedFiles.add fileToSharedFile[it] }
+            files = filter(sharedFiles, e.oobInfohash)
 			if (!sharedFiles.isEmpty())
-				re = new ResultsEvent(results: sharedFiles.asList(), uuid: e.uuid)
+				re = new ResultsEvent(results: sharedFiles.asList(), uuid: e.uuid, searchEvent: e)
 			
 		}
 		
 		if (re != null)
 			eventBus.publish(re)
 	}
+    
+    private static Set<SharedFile> filter(Set<SharedFile> files, boolean oob) {
+        if (!oob)
+            return files
+        Set<SharedFile> rv = new HashSet<>()
+        files.each { 
+            if (it.getPieceSize() != 0)
+                rv.add(it)
+        }
+        rv
+    }
 }

core/src/main/groovy/com/muwire/core/files/HasherService.groovy

@@ -10,11 +10,13 @@ class HasherService {
 
 	final FileHasher hasher
 	final EventBus eventBus
+    final FileManager fileManager
 	Executor executor
 	
-	HasherService(FileHasher hasher, EventBus eventBus) {
+	HasherService(FileHasher hasher, EventBus eventBus, FileManager fileManager) {
 		this.hasher = hasher
 		this.eventBus = eventBus
+        this.fileManager = fileManager
 	}
 	
 	void start() {
@@ -22,6 +24,8 @@ class HasherService {
 	}
 	
 	void onFileSharedEvent(FileSharedEvent evt) {
+        if (fileManager.fileToSharedFile.containsKey(evt.file))
+            return
 		executor.execute( { -> process(evt.file) } as Runnable)
 	}
 	
@@ -36,7 +40,7 @@ class HasherService {
 				eventBus.publish new FileHashedEvent(error: "$f is too large to be shared ${f.length()}")
 			} else {
 				def hash = hasher.hashFile f
-				eventBus.publish new FileHashedEvent(sharedFile: new SharedFile(f, hash))
+				eventBus.publish new FileHashedEvent(sharedFile: new SharedFile(f, hash, FileHasher.getPieceSize(f.length())))
 			}
 		}
 	}

core/src/main/groovy/com/muwire/core/files/PersisterService.groovy

@@ -1,5 +1,8 @@
 package com.muwire.core.files
 
+import java.nio.file.CopyOption
+import java.nio.file.Files
+import java.nio.file.StandardCopyOption
 import java.util.logging.Level
 import java.util.stream.Collectors
 
@@ -34,7 +37,7 @@ class PersisterService extends Service {
 	}
 	
 	void start() {
-		timer.schedule({load()} as TimerTask, 1000)
+		timer.schedule({load()} as TimerTask, 1)
 	}
 	
 	void stop() {
@@ -55,10 +58,13 @@ class PersisterService extends Service {
 						}
 					}
 				}
+                listener.publish(new AllFilesLoadedEvent())
 			} catch (IllegalArgumentException|NumberFormatException e) {
                 log.log(Level.WARNING, "couldn't load files",e)
 			}
-		}
+		} else {
+            listener.publish(new AllFilesLoadedEvent())
+        }
 		timer.schedule({persistFiles()} as TimerTask, 0, interval)
 		loaded = true
 	}
@@ -94,28 +100,37 @@ class PersisterService extends Service {
 		if (!Arrays.equals(root, ih.getRoot()))
 			return null
 			
-		if (json.sources != null) {
+        int pieceSize = 0
+        if (json.pieceSize != null)
+            pieceSize = json.pieceSize
+            
+        if (json.sources != null) {
 			List sources = (List)json.sources
 			Set<Destination> sourceSet = sources.stream().map({d -> new Destination(d.toString())}).collect Collectors.toSet()
-			DownloadedFile df = new DownloadedFile(file, ih, sourceSet)
+			DownloadedFile df = new DownloadedFile(file, ih, pieceSize, sourceSet)
 			return new FileLoadedEvent(loadedFile : df)
 		}
+        
 		 
-		SharedFile sf = new SharedFile(file, ih)
+		SharedFile sf = new SharedFile(file, ih, pieceSize)
 		return new FileLoadedEvent(loadedFile: sf)
 		
 	}
 	
 	private void persistFiles() {
-		location.delete()
 		def sharedFiles = fileManager.getSharedFiles()
-		location.withPrintWriter { writer ->
+        
+        File tmp = File.createTempFile("muwire-files", "tmp")
+        tmp.deleteOnExit()
+		tmp.withPrintWriter { writer ->
 			sharedFiles.each { k, v ->
 				def json = toJson(k,v)
 				json = JsonOutput.toJson(json)
 				writer.println json
 			}
 		}
+        Files.copy(tmp.toPath(), location.toPath(), StandardCopyOption.REPLACE_EXISTING)
+        tmp.delete()
 	}
 	
 	private def toJson(File f, SharedFile sf) {
@@ -124,6 +139,7 @@ class PersisterService extends Service {
 		json.length = f.length()
 		InfoHash ih = sf.getInfoHash()
 		json.infoHash = Base64.encode ih.getRoot()
+        json.pieceSize = sf.getPieceSize()
 		byte [] tmp = new byte [32]
 		json.hashList = []
 		for (int i = 0;i < ih.getHashList().length / 32; i++) {

core/src/main/groovy/com/muwire/core/hostcache/CacheClient.groovy

@@ -65,7 +65,7 @@ class CacheClient {
 		options.setSendLeaseSet(true)
 		CacheServers.getCacheServers().each {
 			log.info "Querying hostcache ${it.toBase32()}"
-			session.sendMessage(it, ping, 0, ping.length, I2PSession.PROTO_DATAGRAM, 0, 0, options)
+			session.sendMessage(it, ping, 0, ping.length, I2PSession.PROTO_DATAGRAM, 1, 0, options)
 		}
 	}
 	
@@ -140,7 +140,7 @@ class CacheClient {
 		pong.pongs.asList().each { 
 			Destination dest = new Destination(it)
 			if (!session.getMyDestination().equals(dest))
-				eventBus.publish(new HostDiscoveredEvent(destination: dest)) 
+				eventBus.publish(new HostDiscoveredEvent(destination: dest, fromHostcache : true)) 
 		}
 		
 	}

core/src/main/groovy/com/muwire/core/hostcache/Host.groovy

@@ -30,4 +30,8 @@ class Host {
 	synchronized boolean hasSucceeded() {
 		successes > 0
 	}
+    
+    synchronized void clearFailures() {
+        failures = 0
+    }
 }

core/src/main/groovy/com/muwire/core/hostcache/HostCache.groovy

@@ -46,8 +46,12 @@ class HostCache extends Service {
 	void onHostDiscoveredEvent(HostDiscoveredEvent e) {
 		if (myself == e.destination)
 			return
-		if (hosts.containsKey(e.destination))
-			return
+		if (hosts.containsKey(e.destination)) {
+            if (!e.fromHostcache)
+                return
+            hosts.get(e.destination).clearFailures()
+            return
+		}
 		Host host = new Host(e.destination)
 		if (allowHost(host)) {
 			hosts.put(e.destination, host)
@@ -55,7 +59,7 @@ class HostCache extends Service {
 	}
 	
 	void onConnectionEvent(ConnectionEvent e) {
-		if (e.incoming || e.leaf)
+		if (e.leaf)
 			return
 		Destination dest = e.endpoint.destination
 		Host host = hosts.get(dest)

core/src/main/groovy/com/muwire/core/hostcache/HostDiscoveredEvent.groovy

@@ -7,9 +7,10 @@ import net.i2p.data.Destination
 class HostDiscoveredEvent extends Event {
 
 	Destination destination
-	
+    boolean fromHostcache
+    
 	@Override
 	public String toString() {
-		"HostDiscoveredEvent ${super.toString()} destination:${destination.toBase32()}"
+		"HostDiscoveredEvent ${super.toString()} destination:${destination.toBase32()} from hostcache $fromHostcache"
 	}
 }

core/src/main/groovy/com/muwire/core/search/QueryEvent.groovy

@@ -1,6 +1,7 @@
 package com.muwire.core.search
 
 import com.muwire.core.Event
+import com.muwire.core.Persona
 
 import net.i2p.data.Destination
 
@@ -9,6 +10,11 @@ class QueryEvent extends Event {
     SearchEvent searchEvent
 	boolean firstHop
 	Destination replyTo
+    Persona originator
 	Destination receivedOn
 
+    String toString() {
+        "searchEvent: $searchEvent firstHop:$firstHop, replyTo:${replyTo.toBase32()}" +
+        "originator: ${originator.getHumanReadableName()} receivedOn: ${receivedOn.toBase32()}"
+    }
 }

core/src/main/groovy/com/muwire/core/search/ResultsEvent.groovy

@@ -5,6 +5,7 @@ import com.muwire.core.SharedFile
 
 class ResultsEvent extends Event {
 
+    SearchEvent searchEvent
 	SharedFile[] results
 	UUID uuid
 }

core/src/main/groovy/com/muwire/core/search/ResultsParser.groovy

@@ -12,8 +12,19 @@ class ResultsParser {
     public static UIResultEvent parse(Persona p, UUID uuid, def json) throws InvalidSearchResultException {
         if (json.type != "Result")
             throw new InvalidSearchResultException("not a result json")
-        if (json.version != 1)
-            throw new InvalidSearchResultException("unknown version $json.version")
+        switch(json.version) {
+            case 1:
+                return parseV1(p, uuid, json)
+            case 2:
+                return parseV2(p, uuid, json)
+            default:
+                throw new InvalidSearchResultException("unknown version $json.version")
+
+        }
+
+    }
+    
+    private static parseV1(Persona p, UUID uuid, def json) {
         if (json.name == null)
             throw new InvalidSearchResultException("name missing")
         if (json.size == null)
@@ -52,4 +63,33 @@ class ResultsParser {
             throw new InvalidSearchResultException("parsing search result failed",e)
         }
     }
+    
+    private static UIResultEvent parseV2(Persona p, UUID uuid, def json) {
+        if (json.name == null)
+            throw new InvalidSearchResultException("name missing")
+        if (json.size == null)
+            throw new InvalidSearchResultException("length missing")
+        if (json.infohash == null)
+            throw new InvalidSearchResultException("infohash missing")
+        if (json.pieceSize == null)
+            throw new InvalidSearchResultException("pieceSize missing")
+        if (json.hashList != null)
+            throw new InvalidSearchResultException("V2 result with hashlist")
+        try {
+            String name = DataUtil.readi18nString(Base64.decode(json.name))
+            long size = json.size
+            byte [] infoHash = Base64.decode(json.infohash)
+            if (infoHash.length != InfoHash.SIZE)
+                throw new InvalidSearchResultException("invalid infohash size $infoHash.length")
+            int pieceSize = json.pieceSize
+            return new UIResultEvent( sender : p,
+                name : name,
+                size : size,
+                infohash : new InfoHash(infoHash),
+                pieceSize : pieceSize,
+                uuid: uuid)
+        } catch (Exception e) {
+            throw new InvalidSearchResultException("parsing search result failed",e)
+        }
+    }
 }

core/src/main/groovy/com/muwire/core/search/ResultsSender.groovy

@@ -46,22 +46,26 @@ class ResultsSender {
         this.me = me
     }
     
-    void sendResults(UUID uuid, SharedFile[] results, Destination target) {
-        log.info("Sending $results.length results for uuid $uuid to ${target.toBase32()}")
+    void sendResults(UUID uuid, SharedFile[] results, Destination target, boolean oobInfohash) {
+        log.info("Sending $results.length results for uuid $uuid to ${target.toBase32()} oobInfohash : $oobInfohash")
         if (target.equals(me.destination)) {
             results.each { 
                 long length = it.getFile().length()
+                int pieceSize = it.getPieceSize()
+                if (pieceSize == 0)
+                    pieceSize = FileHasher.getPieceSize(length)
                 def uiResultEvent = new UIResultEvent( sender : me,
                     name : it.getFile().getName(),
                     size : length,
                     infohash : it.getInfoHash(),
-                    pieceSize : FileHasher.getPieceSize(length),
+                    pieceSize : pieceSize,
                     uuid : uuid
                     )
                     eventBus.publish(uiResultEvent)
             }
         } else {
-            executor.execute(new ResultSendJob(uuid : uuid, results : results, target: target))
+            executor.execute(new ResultSendJob(uuid : uuid, results : results, 
+                target: target, oobInfohash : oobInfohash))
         }
     }
     
@@ -69,6 +73,7 @@ class ResultsSender {
         UUID uuid
         SharedFile [] results
         Destination target
+        boolean oobInfohash
         
         @Override
         public void run() {
@@ -91,19 +96,20 @@ class ResultsSender {
                     String encodedName = Base64.encode(baos.toByteArray())
                     def obj = [:]
                     obj.type = "Result"
-                    obj.version = 1
+                    obj.version = oobInfohash ? 2 : 1
                     obj.name = encodedName
                     obj.infohash = Base64.encode(it.getInfoHash().getRoot())
                     obj.size = it.getFile().length()
-                    obj.pieceSize = FileHasher.getPieceSize(it.getFile().length())
-                    byte [] hashList = it.getInfoHash().getHashList()
-                    def hashListB64 = []
-                    for (int i = 0; i < hashList.length / InfoHash.SIZE; i++) {
-                        System.arraycopy(hashList, InfoHash.SIZE * i, tmp, 0, InfoHash.SIZE)
-                        hashListB64 << Base64.encode(tmp)
+                    obj.pieceSize = it.getPieceSize()
+                    if (!oobInfohash) {
+                        byte [] hashList = it.getInfoHash().getHashList()
+                        def hashListB64 = []
+                        for (int i = 0; i < hashList.length / InfoHash.SIZE; i++) {
+                            System.arraycopy(hashList, InfoHash.SIZE * i, tmp, 0, InfoHash.SIZE)
+                            hashListB64 << Base64.encode(tmp)
+                        }
+                        obj.hashList = hashListB64
                     }
-                    obj.hashList = hashListB64
-
                     def json = jsonOutput.toJson(obj)
                     os.writeShort((short)json.length())
                     os.write(json.getBytes(StandardCharsets.US_ASCII))

core/src/main/groovy/com/muwire/core/search/SearchEvent.groovy

@@ -1,10 +1,19 @@
 package com.muwire.core.search
 
 import com.muwire.core.Event
+import com.muwire.core.InfoHash
 
 class SearchEvent extends Event {
 
 	List<String> searchTerms
 	byte [] searchHash
 	UUID uuid
+    boolean oobInfohash
+    
+    String toString() {
+        def infoHash = null
+        if (searchHash != null)
+            infoHash = new InfoHash(searchHash)
+        "searchTerms: $searchTerms searchHash:$infoHash, uuid:$uuid oobInfohash:$oobInfohash"
+    }
 }

core/src/main/groovy/com/muwire/core/search/SearchIndex.groovy

@@ -42,7 +42,7 @@ class SearchIndex {
 		terms.each {
 			Set<String> forWord = keywords.getOrDefault(it,[])
 			if (rv == null) {
-				rv = forWord
+				rv = new HashSet<>(forWord)
 			} else {
 				rv.retainAll(forWord)
 			}

core/src/main/groovy/com/muwire/core/search/SearchManager.groovy

@@ -44,7 +44,7 @@ public class SearchManager {
             log.info("No results for search uuid $event.uuid")
             return
         }
-        resultsSender.sendResults(event.uuid, event.results, target)
+        resultsSender.sendResults(event.uuid, event.results, target, event.searchEvent.oobInfohash)
     }
     
     boolean hasLocalSearch(UUID uuid) {

core/src/main/groovy/com/muwire/core/search/UIResultEvent.groovy

@@ -11,4 +11,9 @@ class UIResultEvent extends Event {
     long size
     InfoHash infohash
     int pieceSize
+    
+    @Override
+    public String toString() {
+        super.toString() + "name:$name size:$size sender:${sender.getHumanReadableName()} pieceSize $pieceSize"
+    }
 }

core/src/main/groovy/com/muwire/core/update/UpdateAvailableEvent.groovy

@@ -0,0 +1,10 @@
+package com.muwire.core.update
+
+import com.muwire.core.Event
+import com.muwire.core.InfoHash
+
+class UpdateAvailableEvent extends Event {
+    String version
+    String signer
+    String infoHash
+}

core/src/main/groovy/com/muwire/core/update/UpdateClient.groovy

@@ -0,0 +1,132 @@
+package com.muwire.core.update
+
+import java.util.logging.Level
+
+import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
+
+import groovy.json.JsonOutput
+import groovy.json.JsonSlurper
+import groovy.util.logging.Log
+import net.i2p.client.I2PSession
+import net.i2p.client.I2PSessionMuxedListener
+import net.i2p.client.SendMessageOptions
+import net.i2p.client.datagram.I2PDatagramDissector
+import net.i2p.client.datagram.I2PDatagramMaker
+import net.i2p.util.VersionComparator
+
+@Log
+class UpdateClient {
+    final EventBus eventBus
+    final I2PSession session
+    final String myVersion
+    final MuWireSettings settings
+    
+    private final Timer timer
+    
+    private long lastUpdateCheckTime
+    
+    UpdateClient(EventBus eventBus, I2PSession session, String myVersion, MuWireSettings settings) {
+        this.eventBus = eventBus
+        this.session = session
+        this.myVersion = myVersion
+        this.settings = settings
+        timer = new Timer("update-client",true)
+    }
+    
+    void start() {
+        session.addMuxedSessionListener(new Listener(), I2PSession.PROTO_DATAGRAM, 2)
+        timer.schedule({checkUpdate()} as TimerTask, 60000, 60 * 60 * 1000)
+    }
+    
+    void stop() {
+        timer.cancel()
+    }
+    
+    private void checkUpdate() {
+        final long now = System.currentTimeMillis()
+        if (lastUpdateCheckTime > 0) {
+            if (now - lastUpdateCheckTime < settings.updateCheckInterval * 60 * 60 * 1000)
+                return
+        }
+        lastUpdateCheckTime = now
+    
+        log.info("checking for update")
+        
+        def ping = [version : 1, myVersion : myVersion]
+        ping = JsonOutput.toJson(ping)
+        def maker = new I2PDatagramMaker(session)
+        ping = maker.makeI2PDatagram(ping.bytes)
+        def options = new SendMessageOptions() 
+        options.setSendLeaseSet(true)
+        session.sendMessage(UpdateServers.UPDATE_SERVER, ping, 0, ping.length, I2PSession.PROTO_DATAGRAM, 2, 0, options)   
+    }
+    
+    class Listener implements I2PSessionMuxedListener {
+        
+        final JsonSlurper slurper = new JsonSlurper()
+
+        @Override
+        public void messageAvailable(I2PSession session, int msgId, long size) {
+        }
+
+        @Override
+        public void messageAvailable(I2PSession session, int msgId, long size, int proto, int fromport, int toport) {
+            if (proto != I2PSession.PROTO_DATAGRAM) {
+                log.warning "Received unexpected protocol $proto"
+                return
+            }
+            
+            def payload = session.receiveMessage(msgId)
+            def dissector = new I2PDatagramDissector()
+            try {
+                dissector.loadI2PDatagram(payload)
+                def sender = dissector.getSender()
+                if (sender != UpdateServers.UPDATE_SERVER) {
+                    log.warning("received something not from update server " + sender.toBase32())
+                    return
+                }
+                
+                log.info("Received something from update server")
+                
+                payload = dissector.getPayload()
+                payload = slurper.parse(payload)
+                
+                if (payload.version == null) {
+                    log.warning("version missing")
+                    return
+                }
+                
+                if (payload.signer == null) {
+                    log.warning("signer missing")
+                }
+                
+                if (VersionComparator.comp(myVersion, payload.version) >= 0) {
+                    log.info("no new version available")
+                    return
+                }
+                
+                log.info("new version $payload.version available, publishing event")
+                eventBus.publish(new UpdateAvailableEvent(version : payload.version, signer : payload.signer, infoHash : payload.infoHash))
+                
+            } catch (Exception e) {
+                log.log(Level.WARNING,"Invalid datagram",e)
+            }
+        }
+
+        @Override
+        public void reportAbuse(I2PSession session, int severity) {
+        }
+
+        @Override
+        public void disconnected(I2PSession session) {
+            log.severe("I2P session disconnected")
+        }
+
+        @Override
+        public void errorOccurred(I2PSession session, String message, Throwable error) {
+            log.log(Level.SEVERE, message, error)
+        }
+        
+    }
+}

core/src/main/groovy/com/muwire/core/update/UpdateServers.groovy

@@ -0,0 +1,7 @@
+package com.muwire.core.update
+
+import net.i2p.data.Destination
+
+class UpdateServers {
+    static final Destination UPDATE_SERVER = new Destination("pSWieSRB3czCl3Zz4WpKp4Z8tjv-05zbogRDS7SEnKcSdWOupVwjzQ92GsgQh1VqgoSRk1F8dpZOnHxxz5HFy9D7ri0uFdkMyXdSKoB7IgkkvCfTAyEmeaPwSYnurF3Zk7u286E7YG2rZkQZgJ77tow7ZS0mxFB7Z0Ti-VkZ9~GeGePW~howwNm4iSQACZA0DyTpI8iv5j4I0itPCQRgaGziob~Vfvjk49nd8N4jtaDGo9cEcafikVzQ2OgBgYWL6LRbrrItwuGqsDvITUHWaElUYIDhRQYUq8gYiUA6rwAJputfhFU0J7lIxFR9vVY7YzRvcFckfr0DNI4VQVVlPnRPkUxQa--BlldMaCIppWugjgKLwqiSiHywKpSMlBWgY2z1ry4ueEBo1WEP-mEf88wRk4cFQBCKtctCQnIG2GsnATqTl-VGUAsuzeNWZiFSwXiTy~gQ094yWx-K06fFZUDt4CMiLZVhGlixiInD~34FCRC9LVMtFcqiFB2M-Ql2AAAA")
+}

core/src/main/groovy/com/muwire/core/upload/ContentRequest.groovy

@@ -0,0 +1,5 @@
+package com.muwire.core.upload
+
+class ContentRequest extends Request {
+    Range range
+}

core/src/main/groovy/com/muwire/core/upload/ContentUploader.groovy

@@ -0,0 +1,54 @@
+package com.muwire.core.upload
+
+import java.nio.ByteBuffer
+import java.nio.channels.FileChannel
+import java.nio.charset.StandardCharsets
+import java.nio.file.Files
+import java.nio.file.StandardOpenOption
+
+import com.muwire.core.connection.Endpoint
+
+class ContentUploader extends Uploader {
+    
+    private final File file
+    private final ContentRequest request
+    
+    ContentUploader(File file, ContentRequest request, Endpoint endpoint) {
+        super(endpoint)
+        this.file = file
+        this.request = request
+    }
+    
+    @Override
+    void respond() {
+        OutputStream os = endpoint.getOutputStream()
+        Range range = request.getRange()
+        if (range.start >= file.length() || range.end >= file.length()) {
+            os.write("416 Range Not Satisfiable\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+            os.flush()
+            return
+        }
+
+        os.write("200 OK\r\n".getBytes(StandardCharsets.US_ASCII))
+        os.write("Content-Range: $range.start-$range.end\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+
+        FileChannel channel
+        try {
+            channel = Files.newByteChannel(file.toPath(), EnumSet.of(StandardOpenOption.READ))
+            mapped = channel.map(FileChannel.MapMode.READ_ONLY, range.start, range.end - range.start + 1)
+            byte [] tmp = new byte[0x1 << 13]
+            while(mapped.hasRemaining()) {
+                int start = mapped.position()
+                synchronized(this) {
+                    mapped.get(tmp, 0, Math.min(tmp.length, mapped.remaining()))
+                }
+                int read = mapped.position() - start
+                endpoint.getOutputStream().write(tmp, 0, read)
+            }
+        } finally {
+            try {channel?.close() } catch (IOException ignored) {}
+            endpoint.getOutputStream().flush()
+        }
+    }
+
+}

core/src/main/groovy/com/muwire/core/upload/HashListRequest.groovy

@@ -0,0 +1,4 @@
+package com.muwire.core.upload
+
+class HashListRequest extends Request {
+}

core/src/main/groovy/com/muwire/core/upload/HashListUploader.groovy

@@ -0,0 +1,35 @@
+package com.muwire.core.upload
+
+import java.nio.ByteBuffer
+import java.nio.charset.StandardCharsets
+
+import com.muwire.core.InfoHash
+import com.muwire.core.connection.Endpoint
+
+class HashListUploader extends Uploader {
+    private final InfoHash infoHash
+    private final HashListRequest request
+    
+    HashListUploader(Endpoint endpoint, InfoHash infoHash, HashListRequest request) {
+        super(endpoint)
+        this.infoHash = infoHash
+        mapped = ByteBuffer.wrap(infoHash.getHashList())
+    }
+    
+    void respond() {
+        OutputStream os = endpoint.getOutputStream()
+        os.write("200 OK\r\n".getBytes(StandardCharsets.US_ASCII))
+        os.write("Content-Range: 0-${mapped.remaining()}\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+        
+        byte[]tmp = new byte[0x1 << 13]
+        while(mapped.hasRemaining()) {
+            int start = mapped.position()
+            synchronized(this) {
+                mapped.get(tmp, 0, Math.min(tmp.length, mapped.remaining()))
+            }
+            int read = mapped.position() - start
+            endpoint.getOutputStream().write(tmp, 0, read)
+        }
+        endpoint.getOutputStream().flush()
+    }
+}

core/src/main/groovy/com/muwire/core/upload/Request.groovy

@@ -16,57 +16,12 @@ class Request {
     private static final byte N = "\n".getBytes(StandardCharsets.US_ASCII)[0]
     
     InfoHash infoHash
-    Range range
     Persona downloader
     Map<String, String> headers
     
-    static Request parse(InfoHash infoHash, InputStream is) throws IOException {
-        Map<String,String> headers = new HashMap<>()
-        byte [] tmp = new byte[Constants.MAX_HEADER_SIZE]
-        while(headers.size() < Constants.MAX_HEADERS) {
-            boolean r = false
-            boolean n = false
-            int idx = 0
-            while (true) {
-                byte read = is.read()
-                if (read == -1)
-                    throw new IOException("Stream closed")
-                    
-                if (!r && read == N)
-                    throw new IOException("Received N before R")
-                if (read == R) {
-                    if (r) 
-                        throw new IOException("double R")
-                    r = true
-                    continue
-                }
-                
-                if (r && !n) {
-                    if (read != N) 
-                        throw new IOException("R not followed by N")
-                    n = true
-                    break
-                }
-                if (idx == 0x1 << 14)
-                    throw new IOException("Header too long")    
-                tmp[idx++] = read
-            }
-            
-            if (idx == 0)
-                break
-                
-            String header = new String(tmp, 0, idx, StandardCharsets.US_ASCII)
-            log.fine("Read header $header")
-            
-            int keyIdx = header.indexOf(":")
-            if (keyIdx < 1)
-                throw new IOException("Header key not found")
-            if (keyIdx == header.length())
-                throw new IOException("Header value not found")
-            String key = header.substring(0, keyIdx)
-            String value = header.substring(keyIdx + 1)
-            headers.put(key, value)
-        }
+    static Request parseContentRequest(InfoHash infoHash, InputStream is) throws IOException {
+        
+        Map<String, String> headers = parseHeaders(is)
         
         if (!headers.containsKey("Range"))
             throw new IOException("Range header not found")
@@ -93,7 +48,69 @@ class Request {
             def decoded = Base64.decode(encoded)
             downloader = new Persona(new ByteArrayInputStream(decoded))
         }
-        new Request( infoHash : infoHash, range : new Range(start, end), headers : headers, downloader : downloader)
+        new ContentRequest( infoHash : infoHash, range : new Range(start, end), 
+            headers : headers, downloader : downloader)
+    }
+    
+    static Request parseHashListRequest(InfoHash infoHash, InputStream is) throws IOException {
+        Map<String,String> headers = parseHeaders(is)
+        Persona downloader = null
+        if (headers.containsKey("X-Persona")) {
+            def encoded = headers["X-Persona"].trim()
+            def decoded = Base64.decode(encoded)
+            downloader = new Persona(new ByteArrayInputStream(decoded))
+        }
+        new HashListRequest(infoHash : infoHash, headers : headers, downloader : downloader)
+    }
+    
+    private static Map<String, String> parseHeaders(InputStream is) {
+        Map<String,String> headers = new HashMap<>()
+        byte [] tmp = new byte[Constants.MAX_HEADER_SIZE]
+        while(headers.size() < Constants.MAX_HEADERS) {
+            boolean r = false
+            boolean n = false
+            int idx = 0
+            while (true) {
+                byte read = is.read()
+                if (read == -1)
+                    throw new IOException("Stream closed")
+                    
+                if (!r && read == N)
+                    throw new IOException("Received N before R")
+                if (read == R) {
+                    if (r)
+                        throw new IOException("double R")
+                    r = true
+                    continue
+                }
+                
+                if (r && !n) {
+                    if (read != N)
+                        throw new IOException("R not followed by N")
+                    n = true
+                    break
+                }
+                if (idx == 0x1 << 14)
+                    throw new IOException("Header too long")
+                tmp[idx++] = read
+            }
+            
+            if (idx == 0)
+                break
+                
+            String header = new String(tmp, 0, idx, StandardCharsets.US_ASCII)
+            log.fine("Read header $header")
+            
+            int keyIdx = header.indexOf(":")
+            if (keyIdx < 1)
+                throw new IOException("Header key not found")
+            if (keyIdx == header.length())
+                throw new IOException("Header value not found")
+            String key = header.substring(0, keyIdx)
+            String value = header.substring(keyIdx + 1)
+            headers.put(key, value)
+        }
+        headers
     }
     
 }

core/src/main/groovy/com/muwire/core/upload/UploadManager.groovy

@@ -23,9 +23,9 @@ public class UploadManager {
         this.fileManager = fileManager
     }
     
-    public void processEndpoint(Endpoint e) throws IOException {
+    public void processGET(Endpoint e) throws IOException {
         byte [] infoHashStringBytes = new byte[44]
-                DataInputStream dis = new DataInputStream(e.getInputStream())
+        DataInputStream dis = new DataInputStream(e.getInputStream())
         boolean first = true
         while(true) {
             if (first)
@@ -61,8 +61,13 @@ public class UploadManager {
                 return
             }
 
-            Request request = Request.parse(new InfoHash(infoHashRoot), e.getInputStream())
-            Uploader uploader = new Uploader(sharedFiles.iterator().next().file, request, e)
+            Request request = Request.parseContentRequest(new InfoHash(infoHashRoot), e.getInputStream())
+            if (request.downloader != null && request.downloader.destination != e.destination) {
+                log.info("Downloader persona doesn't match their destination")
+                e.close()
+                return
+            }
+            Uploader uploader = new ContentUploader(sharedFiles.iterator().next().file, request, e)
             eventBus.publish(new UploadEvent(uploader : uploader))
             try {
                 uploader.respond()
@@ -70,7 +75,92 @@ public class UploadManager {
                 eventBus.publish(new UploadFinishedEvent(uploader : uploader))
             }
         }
+    }
+    
+    public void processHashList(Endpoint e) {
+        byte [] infoHashStringBytes = new byte[44]
+        DataInputStream dis = new DataInputStream(e.getInputStream())
+        dis.readFully(infoHashStringBytes)
+        String infoHashString = new String(infoHashStringBytes, StandardCharsets.US_ASCII)
+        log.info("Responding to hashlist request for root $infoHashString")
         
+        byte [] infoHashRoot = Base64.decode(infoHashString)
+        Set<SharedFile> sharedFiles = fileManager.getSharedFiles(infoHashRoot)
+        if (sharedFiles == null || sharedFiles.isEmpty()) {
+            log.info "file not found"
+            e.getOutputStream().write("404 File Not Found\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+            e.getOutputStream().flush()
+            e.close()
+            return
+        }
+        
+        byte [] rn = new byte[2]
+        dis.readFully(rn)
+        if (rn != "\r\n".getBytes(StandardCharsets.US_ASCII)) {
+            log.warning("Malformed HASHLIST header")
+            e.close()
+            return
+        }
+        
+        Request request = Request.parseHashListRequest(new InfoHash(infoHashRoot), e.getInputStream())
+        if (request.downloader != null && request.downloader.destination != e.destination) {
+            log.info("Downloader persona doesn't match their destination")
+            e.close()
+            return
+        }
+        Uploader uploader = new HashListUploader(e, sharedFiles.iterator().next().infoHash, request)
+        eventBus.publish(new UploadEvent(uploader : uploader))
+        try {
+            uploader.respond()
+        } finally {
+            eventBus.publish(new UploadFinishedEvent(uploader : uploader))
+        }
+        
+        // proceed with content
+        while(true) {
+            byte[] get = new byte[4]
+            dis.readFully(get)
+            if (get != "GET ".getBytes(StandardCharsets.US_ASCII)) {
+                log.warning("received a method other than GET on subsequent call")
+                e.close()
+                return
+            }
+            dis.readFully(infoHashStringBytes)
+            infoHashString = new String(infoHashStringBytes, StandardCharsets.US_ASCII)
+            log.info("Responding to upload request for root $infoHashString")
+
+            infoHashRoot = Base64.decode(infoHashString)
+            sharedFiles = fileManager.getSharedFiles(infoHashRoot)
+            if (sharedFiles == null || sharedFiles.isEmpty()) {
+                log.info "file not found"
+                e.getOutputStream().write("404 File Not Found\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
+                e.getOutputStream().flush()
+                e.close()
+                return
+            }
+
+            rn = new byte[2]
+            dis.readFully(rn)
+            if (rn != "\r\n".getBytes(StandardCharsets.US_ASCII)) {
+                log.warning("Malformed GET header")
+                e.close()
+                return
+            }
+
+            request = Request.parseContentRequest(new InfoHash(infoHashRoot), e.getInputStream())
+            if (request.downloader != null && request.downloader.destination != e.destination) {
+                log.info("Downloader persona doesn't match their destination")
+                e.close()
+                return
+            }
+            uploader = new ContentUploader(sharedFiles.iterator().next().file, request, e)
+            eventBus.publish(new UploadEvent(uploader : uploader))
+            try {
+                uploader.respond()
+            } finally {
+                eventBus.publish(new UploadFinishedEvent(uploader : uploader))
+            }
+        }
     }
 }
 

core/src/main/groovy/com/muwire/core/upload/Uploader.groovy

@@ -8,49 +8,16 @@ import java.nio.file.StandardOpenOption
 
 import com.muwire.core.connection.Endpoint
 
-class Uploader {
-    private final File file
-    private final Request request
-    private final Endpoint endpoint
-    private ByteBuffer mapped
+abstract class Uploader {
+    protected final Endpoint endpoint
+    protected ByteBuffer mapped
     
-    Uploader(File file, Request request, Endpoint endpoint) {
-        this.file = file
-        this.request = request
+    Uploader(Endpoint endpoint) {
         this.endpoint = endpoint
     }
     
-    void respond() {
-        OutputStream os = endpoint.getOutputStream()
-        Range range = request.getRange()
-        if (range.start >= file.length() || range.end >= file.length()) {
-            os.write("416 Range Not Satisfiable\r\n\r\n".getBytes(StandardCharsets.US_ASCII))
-            os.flush()
-            return
-        }
-
-        os.write("200 OK\r\n".getBytes(StandardCharsets.US_ASCII))
-        os.write("Content-Range: $range.start-$range.end\r\n\r\n".getBytes(StandardCharsets.US_ASCII))        
-
-        FileChannel channel
-        try {
-            channel = Files.newByteChannel(file.toPath(), EnumSet.of(StandardOpenOption.READ))
-            mapped = channel.map(FileChannel.MapMode.READ_ONLY, range.start, range.end - range.start + 1)
-            byte [] tmp = new byte[0x1 << 13]
-            while(mapped.hasRemaining()) {
-                int start = mapped.position()
-                synchronized(this) {
-                    mapped.get(tmp, 0, Math.min(tmp.length, mapped.remaining()))
-                }
-                int read = mapped.position() - start
-                endpoint.getOutputStream().write(tmp, 0, read)
-            }
-        } finally {
-            try {channel?.close() } catch (IOException ignored) {}
-            endpoint.getOutputStream().flush()
-        }     
-    }
-    
+    abstract void respond()
+        
     public synchronized int getPosition() {
         if (mapped == null)
             return -1

core/src/main/groovy/com/muwire/core/util/JULLog.groovy

@@ -55,21 +55,21 @@ class JULLog extends Log {
 
     @Override
     public boolean shouldDebug() {
-        level.intValue().intValue() >= Level.FINE.intValue()
+        level.intValue().intValue() <= Level.FINE.intValue()
     }
 
     @Override
     public boolean shouldInfo() {
-        level.intValue().intValue() >= Level.INFO.intValue()
+        level.intValue().intValue() <= Level.INFO.intValue()
     }
 
     @Override
     public boolean shouldWarn() {
-        level.intValue().intValue() >= Level.WARNING.intValue()
+        level.intValue().intValue() <= Level.WARNING.intValue()
     }
 
     @Override
     public boolean shouldError() {
-        level.intValue().intValue() >= Level.SEVERE.intValue()
+        level.intValue().intValue() <= Level.SEVERE.intValue()
     }
 }

core/src/main/java/com/muwire/core/DownloadedFile.java

@@ -9,8 +9,8 @@ public class DownloadedFile extends SharedFile {
 	
 	private final Set<Destination> sources;
 
-	public DownloadedFile(File file, InfoHash infoHash, Set<Destination> sources) {
-		super(file, infoHash);
+	public DownloadedFile(File file, InfoHash infoHash, int pieceSize, Set<Destination> sources) {
+		super(file, infoHash, pieceSize);
 		this.sources = sources;
 	}
 	

core/src/main/java/com/muwire/core/InfoHash.java

@@ -7,6 +7,7 @@ import java.util.Arrays;
 import java.util.List;
 
 import net.i2p.data.Base32;
+import net.i2p.data.Base64;
 
 public class InfoHash {
 
@@ -76,14 +77,16 @@ public class InfoHash {
 	}
 	
 	public String toString() {
-		String rv = "InfoHash[root:"+Base32.encode(root) + " hashList:";
-		List<String> b32HashList = new ArrayList<>(hashList.length / SIZE);
-		byte [] tmp = new byte[SIZE];
-		for (int i = 0; i < hashList.length / SIZE; i++) {
-			System.arraycopy(hashList, SIZE * i, tmp, 0, SIZE);
-			b32HashList.add(Base32.encode(tmp));
+		String rv = "InfoHash[root:"+Base64.encode(root) + " hashList:";
+		List<String> b64HashList = new ArrayList<>();
+		if (hashList != null) {       
+		    byte [] tmp = new byte[SIZE];
+		    for (int i = 0; i < hashList.length / SIZE; i++) {
+		        System.arraycopy(hashList, SIZE * i, tmp, 0, SIZE);
+		        b64HashList.add(Base64.encode(tmp));
+		    }
 		}
-		rv += b32HashList.toString();
+		rv += b64HashList.toString();
 		rv += "]";
 		return rv;
 	}

core/src/main/java/com/muwire/core/SharedFile.java

@@ -6,10 +6,12 @@ public class SharedFile {
 
 	private final File file;
 	private final InfoHash infoHash;
+	private final int pieceSize;
 	
-	public SharedFile(File file, InfoHash infoHash) {
+	public SharedFile(File file, InfoHash infoHash, int pieceSize) {
 		this.file = file;
 		this.infoHash = infoHash;
+		this.pieceSize = pieceSize;
 	}
 
 	public File getFile() {
@@ -20,4 +22,7 @@ public class SharedFile {
 		return infoHash;
 	}
 	
+	public int getPieceSize() {
+	    return pieceSize;
+	}
 }

core/src/test/groovy/com/muwire/core/Personas.groovy

@@ -0,0 +1,11 @@
+package com.muwire.core
+
+import net.i2p.data.Base64
+
+class Personas {
+    private final String encoded1 = "AQADemFiO~pgSoEo8wQfwncYMvBQWkvPY9I7DYUllHp289UE~zBaLdbl~wbliktAUsW-S70f3UeYgHq34~c7zVuUQjgHZ506iG9hX8B9S3a9gQ3CSG0GuDpeNyiXmZkpHp5m8vT9PZ1zMWzxvzZY~fP9yKFKgO4yrso5I9~DGOPeyJZJ4BFsTJDERv41aZqjFLYUBDmeHGgg9RjYy~93h-nQMVYj9JSO3AgowW-ix49rtiKYIXHMa2PxWHUXkUHWJZtIZntNIDEFeMnPdzLxjAl8so2G6pDcTMZPLLwyb73Ee5ZVfxUynPqyp~fIGVP8Rl4rlaGFli2~ATGBz3XY54aObC~0p7us2JnWaTC~oQT5DVDM7gaOO885o-m8BB8b0duzMBelbdnMZFQJ5jIHVKxkC6Niw4fxTOoXTyOqQmVhtK-9xcwxMuN5DF9IewkR5bhpq5rgnfBP5zvyBaAHMq-d3TCOjTsZ-d3liB98xX5p8G5zmS7gfKArQtM5~CcK~AlX-lGLBQAEAAcAAN5MW1Tq983szfZgY1l8tQFqy8I9tdMf7vc1Ktj~TCIvXYw6AYMbMGy3S67FSPLZVmfHEMQKj2KLAdaRKQkHPAY"
+    private final String encoded2 = "AQAHemxhdGluYiN~3G-hPoBfJ04mhcC52lC6TYSwWxH-WNWno9Y35JS-WrXlnPsodZtwy96ttEaiKTg-hkRqMsaYKpWar1FwayR6qlo0pZCo5pQOLfR7GIM3~wde0JIBEp8BUpgzF1-QXLhuRG1t7tBbenW2tSgp5jQH61RI-c9flyUlOvf6nrhQMZ3aoviZ4aZW23Fx-ajYQBDk7PIxuyn8qYNwWy3kWOhGan05c54NnumS3XCzQWFDDPlADmco1WROeY9qrwwtmLM8lzDCEtJQXJlk~K5yLbyB63hmAeTK7J4iS6f9nnWv7TbB5r-Z3kC6D9TLYrQbu3h4AAxrqso45P8yHQtKUA4QJicS-6NJoBOnlCCU887wx2k9YSxxwNydlIxb1mZsX65Ke4uY0HDFokZHTzUcxvfLB6G~5JkSPDCyZz~2fREgW2-VXu7gokEdEugkuZRrsiQzyfAOOkv53ti5MzTbMOXinBskSb1vZyN2-XcZNaDJvEqUNj~qpfhe-ov2F7FuwQUABAAHAAAfqq-MneIqWBQY92-sy9Z0s~iQsq6lUFa~sYMdY-5o-94fF8a140dm-emF3rO8vuidUIPNaS-37Rl05mAKUCcB"
+    
+    Persona persona1 = new Persona(new ByteArrayInputStream(Base64.decode(encoded1)))
+    Persona persona2 = new Persona(new ByteArrayInputStream(Base64.decode(encoded2)))
+}

core/src/test/groovy/com/muwire/core/connection/ConnectionAcceptorTest.groovy

@@ -43,6 +43,9 @@ class ConnectionAcceptorTest {
     
     def uploadManagerMock
     UploadManager uploadManager
+    
+    def connectionEstablisherMock
+    ConnectionEstablisher connectionEstablisher
 	
 	ConnectionAcceptor acceptor
 	List<ConnectionEvent> connectionEvents
@@ -57,6 +60,7 @@ class ConnectionAcceptorTest {
 		trustServiceMock = new MockFor(TrustService.class)
         searchManagerMock = new MockFor(SearchManager.class)
         uploadManagerMock = new MockFor(UploadManager.class)
+        connectionEstablisherMock = new MockFor(ConnectionEstablisher.class)
 	}
 	
 	@After
@@ -68,6 +72,7 @@ class ConnectionAcceptorTest {
 		trustServiceMock.verify trustService
         searchManagerMock.verify searchManager
         uploadManagerMock.verify uploadManager
+        connectionEstablisherMock.verify connectionEstablisher
 		Thread.sleep(100)
 	}
 	
@@ -87,8 +92,10 @@ class ConnectionAcceptorTest {
 		trustService = trustServiceMock.proxyInstance()
         searchManager = searchManagerMock.proxyInstance()
         uploadManager = uploadManagerMock.proxyInstance()
+        connectionEstablisher = connectionEstablisherMock.proxyInstance()
 		
-		acceptor = new ConnectionAcceptor(eventBus, connectionManager, settings, i2pAcceptor, hostCache, trustService, searchManager, uploadManager)
+		acceptor = new ConnectionAcceptor(eventBus, connectionManager, settings, i2pAcceptor, 
+            hostCache, trustService, searchManager, uploadManager, connectionEstablisher)
 		acceptor.start()
 		Thread.sleep(100)
 	}
@@ -108,6 +115,7 @@ class ConnectionAcceptorTest {
 			new Endpoint(destinations.dest1, is, os, null)
 		}
 		i2pAcceptorMock.demand.accept { Thread.sleep(Integer.MAX_VALUE) }
+        connectionEstablisherMock.demand.isInProgress(destinations.dest1) { false }
         connectionManagerMock.demand.isConnected { dest ->
             assert dest == destinations.dest1
             false
@@ -150,6 +158,7 @@ class ConnectionAcceptorTest {
 			new Endpoint(destinations.dest1, is, os, null)
 		}
 		i2pAcceptorMock.demand.accept { Thread.sleep(Integer.MAX_VALUE) }
+        connectionEstablisherMock.demand.isInProgress(destinations.dest1) { false }
         connectionManagerMock.demand.isConnected { dest ->
             assert dest == destinations.dest1
             false
@@ -264,6 +273,7 @@ class ConnectionAcceptorTest {
 			new Endpoint(destinations.dest1, is, os, null)
 		}
 		i2pAcceptorMock.demand.accept { Thread.sleep(Integer.MAX_VALUE) }
+        connectionEstablisherMock.demand.isInProgress(destinations.dest1) { false }
         connectionManagerMock.demand.isConnected { dest ->
             assert dest == destinations.dest1
             false
@@ -310,6 +320,7 @@ class ConnectionAcceptorTest {
 			new Endpoint(destinations.dest1, is, os, null)
 		}
 		i2pAcceptorMock.demand.accept { Thread.sleep(Integer.MAX_VALUE) }
+        connectionEstablisherMock.demand.isInProgress(destinations.dest1) { false }
         connectionManagerMock.demand.isConnected { dest ->
             assert dest == destinations.dest1
             false
@@ -356,6 +367,7 @@ class ConnectionAcceptorTest {
 			new Endpoint(destinations.dest1, is, os, null)
 		}
 		i2pAcceptorMock.demand.accept { Thread.sleep(Integer.MAX_VALUE) }
+        connectionEstablisherMock.demand.isInProgress(destinations.dest1) { false }
         connectionManagerMock.demand.isConnected { dest ->
             assert dest == destinations.dest1
             false

core/src/test/groovy/com/muwire/core/download/DownloadSessionTest.groovy

@@ -15,7 +15,7 @@ class DownloadSessionTest {
     private File source, target
     private InfoHash infoHash
     private Endpoint endpoint
-    private Pieces pieces
+    private Pieces pieces, claimed
     private String rootBase64
     
     private DownloadSession session
@@ -24,7 +24,7 @@ class DownloadSessionTest {
     private InputStream fromDownloader, fromUploader
     private OutputStream toDownloader, toUploader
     
-    private void initSession(int size) {
+    private void initSession(int size, def claimedPieces = []) {
         Random r = new Random()
         byte [] content = new byte[size]
         r.nextBytes(content)
@@ -48,6 +48,8 @@ class DownloadSessionTest {
         else
             nPieces = size / pieceSize + 1
         pieces = new Pieces(nPieces)
+        claimed = new Pieces(nPieces)
+        claimedPieces.each {claimed.markDownloaded(it)}
         
         fromDownloader = new PipedInputStream()
         fromUploader = new PipedInputStream()
@@ -55,7 +57,7 @@ class DownloadSessionTest {
         toUploader = new PipedOutputStream(fromDownloader)
         endpoint = new Endpoint(null, fromUploader, toUploader, null)
         
-        session = new DownloadSession("",pieces, infoHash, endpoint, target, pieceSize, size)
+        session = new DownloadSession("",pieces, claimed, infoHash, endpoint, target, pieceSize, size)
         downloadThread = new Thread( { session.request() } as Runnable)
         downloadThread.setDaemon(true)
         downloadThread.start()
@@ -138,4 +140,29 @@ class DownloadSessionTest {
         assert !pieces.isComplete()
         assert 1 == pieces.donePieces()
     }
+    
+    @Test
+    public void testSmallFileClaimed() {
+        initSession(20, [0])
+        long now = System.currentTimeMillis()
+        downloadThread.join(100)
+        assert 100 > (System.currentTimeMillis() - now)
+    }
+    
+    @Test
+    public void testClaimedPiecesAvoided() {
+        int pieceSize = FileHasher.getPieceSize(1)
+        int size = (1 << pieceSize) * 10
+        initSession(size, [1,2,3,4,5,6,7,8,9])
+        assert !claimed.isMarked(0)
+        
+        assert "GET $rootBase64" == readTillRN(fromDownloader)
+        String range = readTillRN(fromDownloader)
+        def matcher = (range =~ /^Range: (\d+)-(\d+)$/)
+        int start = Integer.parseInt(matcher[0][1])
+        int end = Integer.parseInt(matcher[0][2])
+        
+        assert claimed.isMarked(0)
+        assert start == 0 && end == (1 << pieceSize) - 1
+    }
 }

core/src/test/groovy/com/muwire/core/files/FileHasherTest.groovy

@@ -24,9 +24,9 @@ class FileHasherTest extends GroovyTestCase {
 	
 	@Test
 	void testPieceSize() {
-		assert 18 == FileHasher.getPieceSize(1000000)
-		assert 20 == FileHasher.getPieceSize(100000000)
-		assert 30 == FileHasher.getPieceSize(FileHasher.MAX_SIZE)
+		assert 17 == FileHasher.getPieceSize(1000000)
+		assert 17 == FileHasher.getPieceSize(100000000)
+		assert 27 == FileHasher.getPieceSize(FileHasher.MAX_SIZE)
 		shouldFail IllegalArgumentException, {
 			FileHasher.getPieceSize(Long.MAX_VALUE)
 		}
@@ -48,7 +48,7 @@ class FileHasherTest extends GroovyTestCase {
 		fos.write b
 		fos.close()
 		def ih = hasher.hashFile tmp
-		assert ih.getHashList().length == 32
+		assert ih.getHashList().length == 64
 	}
 	
 	@Test
@@ -58,7 +58,7 @@ class FileHasherTest extends GroovyTestCase {
 		fos.write b
 		fos.close()
 		def ih = hasher.hashFile tmp
-		assert ih.getHashList().length == 64
+		assert ih.getHashList().length == 96
 	}
 	
 	@Test
@@ -68,7 +68,7 @@ class FileHasherTest extends GroovyTestCase {
 		fos.write b
 		fos.close()
 		def ih = hasher.hashFile tmp
-		assert ih.getHashList().length == 64
+		assert ih.getHashList().length == 128
 	}
 	
 	@Test
@@ -78,6 +78,6 @@ class FileHasherTest extends GroovyTestCase {
 		fos.write b
 		fos.close()
 		def ih = hasher.hashFile tmp
-		assert ih.getHashList().length == 32 * 3
+		assert ih.getHashList().length == 160
 	}
 }

core/src/test/groovy/com/muwire/core/files/FileManagerTest.groovy

@@ -5,6 +5,7 @@ import org.junit.Test
 
 import com.muwire.core.EventBus
 import com.muwire.core.InfoHash
+import com.muwire.core.MuWireSettings
 import com.muwire.core.SharedFile
 import com.muwire.core.search.ResultsEvent
 import com.muwire.core.search.SearchEvent
@@ -26,7 +27,7 @@ class FileManagerTest {
 	void before() {
 		eventBus = new EventBus()
 		eventBus.register(ResultsEvent.class, listener)
-		manager = new FileManager(eventBus)
+		manager = new FileManager(eventBus, new MuWireSettings())
 		results = null
 	}
 	
@@ -34,7 +35,7 @@ class FileManagerTest {
 	void testHash1Result() {
 		File f = new File("a b.c")
 		InfoHash ih = InfoHash.fromHashList(new byte[32])
-		SharedFile sf = new SharedFile(f,ih)
+		SharedFile sf = new SharedFile(f,ih, 0)
 		FileHashedEvent fhe = new FileHashedEvent(sharedFile: sf)
 		manager.onFileHashedEvent(fhe)
 		
@@ -53,8 +54,8 @@ class FileManagerTest {
 	@Test
 	void testHash2Results() {
 		InfoHash ih = InfoHash.fromHashList(new byte[32])
-		SharedFile sf1 = new SharedFile(new File("a b.c"), ih)
-		SharedFile sf2 = new SharedFile(new File("d e.f"), ih)
+		SharedFile sf1 = new SharedFile(new File("a b.c"), ih, 0)
+		SharedFile sf2 = new SharedFile(new File("d e.f"), ih, 0)
 		manager.onFileLoadedEvent new FileLoadedEvent(loadedFile : sf1)
 		manager.onFileLoadedEvent new FileLoadedEvent(loadedFile : sf2)
 
@@ -75,7 +76,7 @@ class FileManagerTest {
 	void testHash0Results() {
 		File f = new File("a b.c")
 		InfoHash ih = InfoHash.fromHashList(new byte[32])
-		SharedFile sf = new SharedFile(f,ih)
+		SharedFile sf = new SharedFile(f,ih, 0)
 		FileHashedEvent fhe = new FileHashedEvent(sharedFile: sf)
 		manager.onFileHashedEvent(fhe)
 		
@@ -89,7 +90,7 @@ class FileManagerTest {
 	void testKeyword1Result() {
 		File f = new File("a b.c")
 		InfoHash ih = InfoHash.fromHashList(new byte[32])
-		SharedFile sf = new SharedFile(f,ih)
+		SharedFile sf = new SharedFile(f,ih,0)
 		FileHashedEvent fhe = new FileHashedEvent(sharedFile: sf)
 		manager.onFileHashedEvent(fhe)
 		
@@ -107,12 +108,12 @@ class FileManagerTest {
 	void testKeyword2Results() {
 		File f1 = new File("a b.c")
 		InfoHash ih1 = InfoHash.fromHashList(new byte[32])
-		SharedFile sf1 = new SharedFile(f1, ih1)
+		SharedFile sf1 = new SharedFile(f1, ih1, 0)
 		manager.onFileLoadedEvent new FileLoadedEvent(loadedFile: sf1)
 		
 		File f2 = new File("c d.e")
 		InfoHash ih2 = InfoHash.fromHashList(new byte[64])
-		SharedFile sf2 = new SharedFile(f2, ih2)
+		SharedFile sf2 = new SharedFile(f2, ih2, 0)
 		manager.onFileLoadedEvent new FileLoadedEvent(loadedFile: sf2)
 		
 		UUID uuid = UUID.randomUUID()
@@ -130,7 +131,7 @@ class FileManagerTest {
 	void testKeyword0Results() {
 		File f = new File("a b.c")
 		InfoHash ih = InfoHash.fromHashList(new byte[32])
-		SharedFile sf = new SharedFile(f,ih)
+		SharedFile sf = new SharedFile(f,ih,0)
 		FileHashedEvent fhe = new FileHashedEvent(sharedFile: sf)
 		manager.onFileHashedEvent(fhe)
 		
@@ -143,8 +144,8 @@ class FileManagerTest {
 	@Test
 	void testRemoveFileExistingHash() {
 		InfoHash ih = InfoHash.fromHashList(new byte[32])
-		SharedFile sf1 = new SharedFile(new File("a b.c"), ih)
-		SharedFile sf2 = new SharedFile(new File("d e.f"), ih)
+		SharedFile sf1 = new SharedFile(new File("a b.c"), ih, 0)
+		SharedFile sf2 = new SharedFile(new File("d e.f"), ih, 0)
 		manager.onFileLoadedEvent new FileLoadedEvent(loadedFile : sf1)
 		manager.onFileLoadedEvent new FileLoadedEvent(loadedFile : sf2)
 		
@@ -161,12 +162,12 @@ class FileManagerTest {
 	void testRemoveFile() {
 		File f1 = new File("a b.c")
 		InfoHash ih1 = InfoHash.fromHashList(new byte[32])
-		SharedFile sf1 = new SharedFile(f1, ih1)
+		SharedFile sf1 = new SharedFile(f1, ih1, 0)
 		manager.onFileLoadedEvent new FileLoadedEvent(loadedFile: sf1)
 		
 		File f2 = new File("c d.e")
 		InfoHash ih2 = InfoHash.fromHashList(new byte[64])
-		SharedFile sf2 = new SharedFile(f2, ih2)
+		SharedFile sf2 = new SharedFile(f2, ih2, 0)
 		manager.onFileLoadedEvent new FileLoadedEvent(loadedFile: sf2)
 		
 		manager.onFileUnsharedEvent new FileUnsharedEvent(unsharedFile: sf2)

core/src/test/groovy/com/muwire/core/files/HasherServiceTest.groovy

@@ -8,6 +8,7 @@ import org.junit.Before
 import org.junit.Test
 
 import com.muwire.core.EventBus
+import com.muwire.core.MuWireSettings
 
 class HasherServiceTest {
 
@@ -24,7 +25,7 @@ class HasherServiceTest {
 	void before() {
         eventBus = new EventBus()
 		hasher = new FileHasher()
-		service = new HasherService(hasher, eventBus)
+		service = new HasherService(hasher, eventBus, new FileManager(eventBus, new MuWireSettings()))
         eventBus.register(FileHashedEvent.class, listener)
 		service.start()
 	}

core/src/test/groovy/com/muwire/core/files/PersisterServiceLoadingTest.groovy

@@ -99,7 +99,7 @@ class PersisterServiceLoadingTest {
 		FileHasher fh = new FileHasher()
 		InfoHash ih1 = fh.hashFile(sharedFile1)
 		
-		assert ih1.getHashList().length == 2 * 32
+		assert ih1.getHashList().length == 96
 		
 		def json = [:]
 		json.file = getSharedFileJsonName(sharedFile1)
@@ -111,7 +111,9 @@ class PersisterServiceLoadingTest {
 		String hash1 = Base64.encode(tmp)
 		System.arraycopy(ih1.getHashList(), 32, tmp, 0, 32)
 		String hash2 = Base64.encode(tmp)
-		json.hashList = [hash1, hash2]
+        System.arraycopy(ih1.getHashList(), 64, tmp, 0, 32)
+        String hash3 = Base64.encode(tmp)
+		json.hashList = [hash1, hash2, hash3]
 		
 		json = JsonOutput.toJson(json)
 		

core/src/test/groovy/com/muwire/core/files/PersisterServiceSavingTest.groovy

@@ -8,6 +8,7 @@ import com.muwire.core.Destinations
 import com.muwire.core.DownloadedFile
 import com.muwire.core.EventBus
 import com.muwire.core.InfoHash
+import com.muwire.core.MuWireSettings
 import com.muwire.core.SharedFile
 import com.muwire.core.util.DataUtil
 
@@ -31,7 +32,7 @@ class PersisterServiceSavingTest {
 		f = new File("build.gradle")
 		f = f.getCanonicalFile()
 		ih = fh.hashFile(f)
-		fileSource = new FileManager(eventBus) {
+		fileSource = new FileManager(eventBus, new MuWireSettings()) {
 					Map<File, SharedFile> getSharedFiles() {
 						Map<File, SharedFile> rv = new HashMap<>()
 						rv.put(f, sf)
@@ -54,7 +55,7 @@ class PersisterServiceSavingTest {
 	
 	@Test
 	void testSavingSharedFile() {
-		sf = new SharedFile(f, ih)
+		sf = new SharedFile(f, ih, 0)
 		
 		ps = new PersisterService(persisted, eventBus, 100, fileSource)
 		ps.start()
@@ -73,7 +74,7 @@ class PersisterServiceSavingTest {
 	@Test
 	void testSavingDownloadedFile() {
 		Destinations dests = new Destinations()
-		sf = new DownloadedFile(f, ih, new HashSet([dests.dest1, dests.dest2]))
+		sf = new DownloadedFile(f, ih, 0, new HashSet([dests.dest1, dests.dest2]))
 		
 		ps = new PersisterService(persisted, eventBus, 100, fileSource)
 		ps.start()

core/src/test/groovy/com/muwire/core/search/SearchIndexTest.groovy

@@ -30,7 +30,18 @@ class SearchIndexTest {
 		assert found.size() == 2
 		assert found.contains("a b.c")
 		assert found.contains("c d.e")
+        
 	}
+    
+    @Test
+    public void testDrillDownDoesNotModifyIndex() {
+        initIndex(["a b.c", "c d.e"])
+        index.search(["c","e"])
+        def found = index.search(["c"])
+        assert found.size() == 2
+        assert found.contains("a b.c")
+        assert found.contains("c d.e")
+    }
 	
 	@Test
 	void testDrillDown() {

core/src/test/groovy/com/muwire/core/trust/TrustServiceTest.groovy

@@ -5,14 +5,17 @@ import org.junit.Before
 import org.junit.Test
 
 import com.muwire.core.Destinations
+import com.muwire.core.Persona
+import com.muwire.core.Personas
 
+import net.i2p.data.Base64
 import net.i2p.data.Destination
 
 class TrustServiceTest {
 
 	TrustService service
 	File persistGood, persistBad
-	Destinations dests = new Destinations()
+	Personas personas = new Personas()
 	
 	@Before
 	void before() {
@@ -33,51 +36,50 @@ class TrustServiceTest {
 	
 	@Test
 	void testEmpty() {
-		assert TrustLevel.NEUTRAL == service.getLevel(dests.dest1)
-		assert TrustLevel.NEUTRAL == service.getLevel(dests.dest2)
+		assert TrustLevel.NEUTRAL == service.getLevel(personas.persona1.destination)
+		assert TrustLevel.NEUTRAL == service.getLevel(personas.persona2.destination)
 	}
 	
 	@Test
 	void testOnEvent() {
-		service.onTrustEvent new TrustEvent(level: TrustLevel.TRUSTED, destination: dests.dest1)
-		service.onTrustEvent new TrustEvent(level: TrustLevel.DISTRUSTED, destination: dests.dest2)
+		service.onTrustEvent new TrustEvent(level: TrustLevel.TRUSTED, persona: personas.persona1)
+		service.onTrustEvent new TrustEvent(level: TrustLevel.DISTRUSTED, persona: personas.persona2)
 		
-		assert TrustLevel.TRUSTED == service.getLevel(dests.dest1)
-		assert TrustLevel.DISTRUSTED == service.getLevel(dests.dest2)
+		assert TrustLevel.TRUSTED == service.getLevel(personas.persona1.destination)
+		assert TrustLevel.DISTRUSTED == service.getLevel(personas.persona2.destination)
 	}
 	
 	@Test 
 	void testPersist() {
-		service.onTrustEvent new TrustEvent(level: TrustLevel.TRUSTED, destination: dests.dest1)
-		service.onTrustEvent new TrustEvent(level: TrustLevel.DISTRUSTED, destination: dests.dest2)
+		service.onTrustEvent new TrustEvent(level: TrustLevel.TRUSTED, persona: personas.persona1)
+		service.onTrustEvent new TrustEvent(level: TrustLevel.DISTRUSTED, persona: personas.persona2)
 		
 		Thread.sleep(250)
 		def trusted = new HashSet<>()
 		persistGood.eachLine {
-			trusted.add(new Destination(it))
+			trusted.add(new Persona(new ByteArrayInputStream(Base64.decode(it))))
 		}
 		def distrusted = new HashSet<>()
 		persistBad.eachLine {
-			distrusted.add(new Destination(it))
+			distrusted.add(new Persona(new ByteArrayInputStream(Base64.decode(it))))
 		}
 		
 		assert trusted.size() == 1
-		assert trusted.contains(dests.dest1)
+		assert trusted.contains(personas.persona1)
 		assert distrusted.size() == 1
-		assert distrusted.contains(dests.dest2)
+		assert distrusted.contains(personas.persona2)
 	}
 	
 	@Test
 	void testLoad() {
 		service.stop()
-		persistGood.append("${dests.dest1.toBase64()}\n")
-		persistBad.append("${dests.dest2.toBase64()}\n")
+		persistGood.append("${personas.persona1.toBase64()}\n")
+		persistBad.append("${personas.persona2.toBase64()}\n")
 		service = new TrustService(persistGood, persistBad, 100)
 		service.start()
-		Thread.sleep(10)
+		Thread.sleep(50)
 		
-		assert TrustLevel.TRUSTED == service.getLevel(dests.dest1)
-		assert TrustLevel.DISTRUSTED == service.getLevel(dests.dest2)
-
+		assert TrustLevel.TRUSTED == service.getLevel(personas.persona1.destination)
+		assert TrustLevel.DISTRUSTED == service.getLevel(personas.persona2.destination)
 	}
 }

doc/infohash-upgrade.md

@@ -0,0 +1,37 @@
+# InfoHash Upgrade
+
+An infohash is a list of hashes of the pieces of the file.  In MuWire 0.1.0 the piece size is determined by policy based on the file size, with the intention being to keep the list of hashes to maximum 128 in number.  The reason for this is that infohashes get returned with search results, and smaller piece size will result in larger infohash which will slow down the transmission of search results.
+
+### The problem
+
+This presents the following problem - larger files have larger piece sizes: a 2GB file will have a 16MB piece size, a 4GB file 32MB and so on.  Pieces are atomic, i.e. if a download fails halfway through a piece it will resume since the beginning of the piece.  Unfortunately in the current state of I2P the failure rate of streaming connections is too high and transmitting an entire piece over a single connection is not likely to succeed as the size of the piece increases.  This makes downloading multi-gigabyte files nearly impossible.
+
+### Out-of-band request proposal
+
+Barring any improvement to the reliability of I2P connections, the following approach can be used to enable smaller piece sizes and the corresponding increase in download success rate of large files:
+
+* Search results do carry the full infohash of the file, instead they carry just the root and the number of 32-byte hashes in the infohash
+* When a downloader begins a download, it issues a request for the full infohash first.  Only after that is fetched and verified, the download proceeds as usual.
+
+Such approach is more complicated in nature than the current simplistic one, but it has the additional benefit of reducing the size of search results.
+
+### Wire protocol changes
+
+A new request method - "HASHLIST" is introduced.  It is immediately followed by the Base64 encoded root of the infohash and '\r\n'.  The request may contain HTTP headers in the same format as in HTTP 1.1.  One such header may be the X-Persona header, but that is optional.  After all the headers a blank line with just '\r\n' is sent.
+
+The response is identical to that of regular GET request, with the same response codes.  The response may also carry headers, and is also followed by a blank line with '\r\n'.  What follows immediately after that is a binary representation of the hashlist.  After sending the full hashlist, the uploader keeps the connection open in anticipation of the first content GET request.
+
+The downloader verifies the hashlist by hashing it with SHA256 and comparing it to the advertised infohash root.  If there is a match, it proceeds with the rest of the download as in MuWire 0.1.0.
+
+### Necessary changes to MuWire 0.1.0
+
+To accommodate this proposal in a backwards compatible manner, it is necessary to first de-hardcode the piece count computation logic which is currently hardcoded in a few places.  Then it is necessary to:
+
+* persist the piece size to disk when a file is being shared so that it can be returned in search results
+* search queries need to carry a flag of some kind that indicates support for out-of-band infohash support
+  * that in turn requires nodes to support passing of that flag as the queries are being routed through the network
+* the returned results need to indicate whether they are returning a full infohash or just a root; the "version" field in the json can be used for that
+
+### Roadmap
+
+Support for this proposal is currently intended for MuWire 0.2.0.  However, in order to make rollout smooth, in MuWire 0.1.1 support for the first two items will be introduced.  Since there already are users on the network who have shared files without persisting the size of their pieces on disk, those files will not be eligible to participate in this scheme unless re-shared (which implies re-hashing).

doc/wire-protocol.md

@@ -131,12 +131,18 @@ Sent by a leaf or ultrapeer when performing a search.  Contains the reply-to per
     firstHop: false,
     keywords : ["keyword1","keyword2"...]
     infohash: "asdfasdf...",
-    replyTo : "asdfasf...b64"
+    replyTo : "asdfasf...b64",
+    originator : "asfasdf...",
+    "oobHashlist" : true
 }
 ```
 
 A search can contain either the query entered by the user in the UI or the infohash if the user is looking for a specific file.  If both are present, the infohash takes precedence and the keyword query is ignored.
 
+The "originator" field contains the Base64-encoded persona of the originator of the query.  It is used for display purposes only.  The I2P destination in that persona must match the one in the "replyTo" field.
+
+The oobHashlist flag indicates support for out-of-band hashlist delivery, which is not yet implemented.  Nevertheless, this flag gets propagated through the network for future-proofing.
+
 ### Ultrapeer to leaf
 
 The "Search" message is also sent from an ultrapeer to a leaf.
@@ -175,6 +181,8 @@ Search results are sent through and HTTP POST method from the responder to the o
 * The "altlocs" list contains list of alternate personas that the responder thinks may also have the file.
 * The "pieceSize" field is the size of the each individual file piece (except possibly the last) in powers of 2
 
+Results version 1 contain the full hashlist, version 2 does not contain that list.  See the "infohash-upgrade" document for more information.
+
 ### "Who do you trust" query - any node to any node
 (See the "web-of-trust" document for more info on this query)
 

gradle.properties

@@ -1,5 +1,5 @@
 group         = com.muwire
-version       = 0.0.5
+version       = 0.2.1
 groovyVersion = 2.4.15
 slf4jVersion  = 1.7.25
 spockVersion  = 1.1-groovy-2.4

gui/build.gradle

@@ -41,6 +41,7 @@ griffon {
 }
 
 mainClassName = 'com.muwire.gui.Launcher'
+applicationDefaultJvmArgs = ['-Djava.util.logging.config.file=logging.properties']
 
 apply from: 'gradle/publishing.gradle'
 apply from: 'gradle/code-coverage.gradle'

gui/griffon-app/conf/Config.groovy

@@ -21,4 +21,9 @@ mvcGroups {
         view = 'com.muwire.gui.SearchTabView'
         controller = 'com.muwire.gui.SearchTabController'
     }
-}
+    'Options' {
+        model = 'com.muwire.gui.OptionsModel'
+        view = 'com.muwire.gui.OptionsView'
+        controller = 'com.muwire.gui.OptionsController'
+    }
+}

gui/griffon-app/controllers/com/muwire/gui/MainFrameController.groovy

@@ -7,12 +7,15 @@ import griffon.core.mvc.MVCGroup
 import griffon.core.mvc.MVCGroupConfiguration
 import griffon.inject.MVCMember
 import griffon.metadata.ArtifactProviderFor
+import net.i2p.data.Base64
+
 import javax.annotation.Nonnull
 import javax.inject.Inject
 
 import com.muwire.core.Constants
 import com.muwire.core.Core
 import com.muwire.core.download.DownloadStartedEvent
+import com.muwire.core.download.UIDownloadCancelledEvent
 import com.muwire.core.download.UIDownloadEvent
 import com.muwire.core.search.QueryEvent
 import com.muwire.core.search.SearchEvent
@@ -36,18 +39,56 @@ class MainFrameController {
         cardsPanel.getLayout().show(cardsPanel, "search window")
         
         def search = builder.getVariable("search-field").text
+        search = search.trim()
+        if (search.length() == 0)
+            return
         def uuid = UUID.randomUUID()
         Map<String, Object> params = new HashMap<>()
         params["search-terms"] = search
         params["uuid"] = uuid.toString()
         def group = mvcGroup.createMVCGroup("SearchTab", uuid.toString(), params)
         model.results[uuid.toString()] = group
+
+        boolean hashSearch = false
+        byte [] root = null
+        if (search.length() == 44 && search.indexOf(" ") < 0) {
+            try {
+                root = Base64.decode(search)
+                hashSearch = true
+            } catch (Exception e) {
+                // not a hash search
+            }
+        }
         
-        // this can be improved a lot
-        def terms = search.toLowerCase().trim().split(Constants.SPLIT_PATTERN)
-        def searchEvent = new SearchEvent(searchTerms : terms, uuid : uuid)
+        def searchEvent
+        if (hashSearch) {
+            searchEvent = new SearchEvent(searchHash : root, uuid : uuid)
+        } else {
+            // this can be improved a lot
+            def replaced = search.toLowerCase().trim().replaceAll(Constants.SPLIT_PATTERN, " ")
+            def terms = replaced.split(" ")
+            searchEvent = new SearchEvent(searchTerms : terms, uuid : uuid, oobInfohash: true)
+        }
         core.eventBus.publish(new QueryEvent(searchEvent : searchEvent, firstHop : true, 
-            replyTo: core.me.destination, receivedOn: core.me.destination))
+            replyTo: core.me.destination, receivedOn: core.me.destination,
+            originator : core.me))
+    }
+    
+    void search(String infoHash, String tabTitle) {
+        def cardsPanel = builder.getVariable("cards-panel")
+        cardsPanel.getLayout().show(cardsPanel, "search window")
+        def uuid = UUID.randomUUID()
+        Map<String, Object> params = new HashMap<>()
+        params["search-terms"] = tabTitle
+        params["uuid"] = uuid.toString()
+        def group = mvcGroup.createMVCGroup("SearchTab", uuid.toString(), params)
+        model.results[uuid.toString()] = group
+        
+        def searchEvent = new SearchEvent(searchHash : Base64.decode(infoHash), uuid:uuid,
+            oobInfohash: true)
+        core.eventBus.publish(new QueryEvent(searchEvent : searchEvent, firstHop : true,
+            replyTo: core.me.destination, receivedOn: core.me.destination,
+            originator : core.me))
     }
     
     private def selectedResult() {
@@ -57,12 +98,20 @@ class MainFrameController {
         int row = table.getSelectedRow()
         if (row == -1)
             return
+        def sortEvt = group.view.lastSortEvent
+        if (sortEvt != null) {
+            row = group.view.resultsTable.rowSorter.convertRowIndexToModel(row)
+        } 
         group.model.results[row]        
     }
     
-    private def selectedDownload() {
-        def selected = builder.getVariable("downloads-table").getSelectedRow()
-        model.downloads[selected].downloader
+    private int selectedDownload() {
+        def downloadsTable = builder.getVariable("downloads-table")
+        def selected = downloadsTable.getSelectedRow()
+        def sortEvt = mvcGroup.view.lastDownloadSortEvent
+        if (sortEvt != null)
+            selected = downloadsTable.rowSorter.convertRowIndexToModel(selected)
+        selected
     }
     
     @ControllerAction
@@ -70,8 +119,15 @@ class MainFrameController {
         def result = selectedResult()
         if (result == null)
             return // TODO disable button
-        def file = new File(application.context.get("muwire-settings").downloadLocation, result.name) 
-        core.eventBus.publish(new UIDownloadEvent(result : result, target : file))
+            
+        def file = new File(application.context.get("muwire-settings").downloadLocation, result.name)
+        
+        def selected = builder.getVariable("result-tabs").getSelectedComponent()
+        def group = selected.getClientProperty("mvc-group")
+        
+        def resultsBucket = group.model.hashBucket[result.infohash]
+         
+        core.eventBus.publish(new UIDownloadEvent(result : resultsBucket, target : file))
     }
     
     @ControllerAction
@@ -92,13 +148,14 @@ class MainFrameController {
     
     @ControllerAction 
     void cancel() {
-        def downloader = selectedDownload()
+        def downloader = model.downloads[selectedDownload()].downloader
         downloader.cancel()
+        core.eventBus.publish(new UIDownloadCancelledEvent(downloader : downloader))
     }
     
     @ControllerAction
     void resume() {
-        def downloader = selectedDownload()
+        def downloader = model.downloads[selectedDownload()].downloader
         downloader.resume()
     }
 
@@ -129,6 +186,10 @@ class MainFrameController {
         markTrust("trusted-table", TrustLevel.NEUTRAL, model.trusted)
     }
     
+    void unshareSelectedFiles() {
+        println "unsharing selected files"
+    }
+    
     void mvcGroupInit(Map<String, String> args) {
         application.addPropertyChangeListener("core", {e-> 
             core = e.getNewValue()

gui/griffon-app/controllers/com/muwire/gui/OptionsController.groovy

@@ -0,0 +1,113 @@
+package com.muwire.gui
+
+import griffon.core.artifact.GriffonController
+import griffon.core.controller.ControllerAction
+import griffon.inject.MVCMember
+import griffon.metadata.ArtifactProviderFor
+import javax.annotation.Nonnull
+
+import com.muwire.core.Core
+
+@ArtifactProviderFor(GriffonController)
+class OptionsController {
+    @MVCMember @Nonnull
+    OptionsModel model
+    @MVCMember @Nonnull
+    OptionsView view
+
+    @ControllerAction
+    void save() {
+        String text
+        Core core = application.context.get("core")
+        
+        def i2pProps = core.i2pOptions
+        
+        text = view.inboundLengthField.text
+        model.inboundLength = text
+        i2pProps["inbound.length"] = text
+        
+        text = view.inboundQuantityField.text
+        model.inboundQuantity = text
+        i2pProps["inbound.quantity"] = text
+        
+        text = view.outboundQuantityField.text
+        model.outboundQuantity = text
+        i2pProps["outbound.quantity"] = text
+        
+        text = view.outboundLengthField.text
+        model.outboundLength = text
+        i2pProps["outbound.length"] = text
+        
+        File i2pSettingsFile = new File(core.home, "i2p.properties")
+        i2pSettingsFile.withOutputStream { 
+            i2pProps.store(it,"")
+        }
+                
+        text = view.retryField.text
+        model.downloadRetryInterval = text
+
+        def settings = application.context.get("muwire-settings")
+        settings.downloadRetryInterval = Integer.valueOf(text)
+
+        text = view.updateField.text
+        model.updateCheckInterval = text
+        settings.updateCheckInterval = Integer.valueOf(text)
+
+        boolean onlyTrusted = view.allowUntrustedCheckbox.model.isSelected()
+        model.onlyTrusted = onlyTrusted
+        settings.setAllowUntrusted(!onlyTrusted)
+        
+        boolean shareDownloaded = view.shareDownloadedCheckbox.model.isSelected()
+        model.shareDownloadedFiles = shareDownloaded
+        settings.shareDownloadedFiles = shareDownloaded
+                        
+        File settingsFile = new File(core.home, "MuWire.properties")
+        settingsFile.withOutputStream { 
+            settings.write(it)
+        }
+        
+        // UI Setttings
+        
+        UISettings uiSettings = application.context.get("ui-settings")
+        text = view.lnfField.text
+        model.lnf = text
+        uiSettings.lnf = text
+        
+        text = view.fontField.text
+        model.font = text
+        uiSettings.font = text
+        
+        boolean showMonitor = view.monitorCheckbox.model.isSelected()
+        model.showMonitor = showMonitor
+        uiSettings.showMonitor = showMonitor
+        
+        boolean clearCancelledDownloads = view.clearCancelledDownloadsCheckbox.model.isSelected()
+        model.clearCancelledDownloads = clearCancelledDownloads
+        uiSettings.clearCancelledDownloads = clearCancelledDownloads
+        
+        boolean clearFinishedDownloads = view.clearFinishedDownloadsCheckbox.model.isSelected()
+        model.clearFinishedDownloads = clearFinishedDownloads
+        uiSettings.clearFinishedDownloads = clearFinishedDownloads
+        
+        boolean excludeLocalResult = view.excludeLocalResultCheckbox.model.isSelected()
+        model.excludeLocalResult = excludeLocalResult
+        uiSettings.excludeLocalResult = excludeLocalResult
+        
+        boolean showSearchHashes = view.showSearchHashesCheckbox.model.isSelected()
+        model.showSearchHashes = showSearchHashes
+        uiSettings.showSearchHashes = showSearchHashes
+        
+        File uiSettingsFile = new File(core.home, "gui.properties")
+        uiSettingsFile.withOutputStream { 
+            uiSettings.write(it)
+        }
+        
+        cancel()
+    }
+    
+    @ControllerAction
+    void cancel() {
+        view.d.setVisible(false)
+        mvcGroup.destroy()
+    }
+}

gui/griffon-app/lifecycle/Initialize.groovy

@@ -1,17 +1,25 @@
 import griffon.core.GriffonApplication
 import groovy.util.logging.Log
+import net.i2p.util.SystemVersion
 
 import org.codehaus.griffon.runtime.core.AbstractLifecycleHandler
 
 import com.muwire.core.Core
 import com.muwire.core.MuWireSettings
+import com.muwire.gui.UISettings
 
 import javax.annotation.Nonnull
 import javax.inject.Inject
+import javax.swing.JTable
+import javax.swing.LookAndFeel
+import javax.swing.UIManager
 
 import static griffon.util.GriffonApplicationUtils.isMacOSX
 import static groovy.swing.SwingBuilder.lookAndFeel
 
+import java.awt.Font
+import java.util.logging.Level
+
 @Log
 class Initialize extends AbstractLifecycleHandler {
     @Inject
@@ -21,11 +29,87 @@ class Initialize extends AbstractLifecycleHandler {
 
     @Override
     void execute() {
-        if (isMacOSX()) {
-            lookAndFeel('nimbus') // otherwise the file chooser doesn't open???
-        } else {
-            lookAndFeel('system', 'gtk')
+        log.info "Loading home dir"
+        def portableHome = System.getProperty("portable.home")
+        def home = portableHome == null ?
+            selectHome() :
+            portableHome
+            
+        home = new File(home)
+        if (!home.exists()) {
+            log.info("creating home dir $home")
+            home.mkdirs()
         }
+        
+        application.context.put("muwire-home", home.getAbsolutePath())
+        
+        def guiPropsFile = new File(home, "gui.properties")
+        UISettings uiSettings
+        if (guiPropsFile.exists()) {
+            Properties props = new Properties()
+            guiPropsFile.withInputStream { props.load(it) }
+            uiSettings = new UISettings(props)
+            
+            log.info("settting user-specified lnf $uiSettings.lnf")
+            try {
+                lookAndFeel(uiSettings.lnf)
+            } catch (Throwable bad) {
+                log.log(Level.WARNING,"couldn't set desired look and feeel, switching to defaults", bad)
+                uiSettings.lnf = lookAndFeel("system","gtk","metal").getID()
+            }
+            
+            if (uiSettings.font != null) {
+                log.info("setting user-specified font $uiSettings.font")
+                Font font = new Font(uiSettings.font, Font.PLAIN, 12)
+                def defaults = UIManager.getDefaults()
+                defaults.put("Button.font", font)
+                defaults.put("RadioButton.font", font)
+                defaults.put("Label.font", font)
+                defaults.put("CheckBox.font", font)
+                defaults.put("Table.font", font)
+                defaults.put("TableHeader.font", font)
+                // TODO: add others
+            }
+        } else {
+            Properties props = new Properties()
+            uiSettings = new UISettings(props)
+            log.info "will try default lnfs"
+            if (isMacOSX()) {
+                if (SystemVersion.isJava9()) {
+                    uiSettings.lnf = "metal"
+                    lookAndFeel("metal")
+                } else {
+                    uiSettings.lnf = "nimbus"
+                    lookAndFeel('nimbus') // otherwise the file chooser doesn't open???
+                }
+            } else {
+                LookAndFeel chosen = lookAndFeel('system', 'gtk')
+                uiSettings.lnf = chosen.getID()
+                log.info("ended up applying $chosen.name")
+            }
+        }
+        
+        application.context.put("ui-settings", uiSettings)
+    }
+    
+    private static String selectHome() {
+        def home = new File(System.properties["user.home"])
+        def defaultHome = new File(home, ".MuWire")
+        if (defaultHome.exists())
+            return defaultHome.getAbsolutePath()
+        if (SystemVersion.isMac()) {
+            def library = new File(home, "Library")
+            def appSupport = new File(library, "Application Support")
+            def muwire = new File(appSupport,"MuWire")
+            return muwire.getAbsolutePath()
+        }
+        if (SystemVersion.isWindows()) {
+            def appData = new File(home,"AppData")
+            def roaming = new File(appData, "Roaming")
+            def muwire = new File(roaming, "MuWire")
+            return muwire.getAbsolutePath()
+        }
+        defaultHome.getAbsolutePath()
     }
 }
 

gui/griffon-app/lifecycle/Ready.groovy

@@ -1,10 +1,13 @@
 import griffon.core.GriffonApplication
+import griffon.core.env.Metadata
 import groovy.util.logging.Log
+import net.i2p.util.SystemVersion
 
 import org.codehaus.griffon.runtime.core.AbstractLifecycleHandler
 
 import com.muwire.core.Core
 import com.muwire.core.MuWireSettings
+import com.muwire.core.UILoadedEvent
 import com.muwire.core.files.FileSharedEvent
 
 import javax.annotation.Nonnull
@@ -20,6 +23,9 @@ import java.util.logging.Level
 
 @Log
 class Ready extends AbstractLifecycleHandler {
+    
+    @Inject Metadata metadata
+    
     @Inject
     Ready(@Nonnull GriffonApplication application) {
         super(application)
@@ -28,17 +34,8 @@ class Ready extends AbstractLifecycleHandler {
     @Override
     void execute() {
         log.info "starting core services"
-        def portableHome = System.getProperty("portable.home")
-        def home = portableHome == null ? 
-            System.getProperty("user.home") + File.separator + ".MuWire" :
-            portableHome
-            
-        home = new File(home)
-        if (!home.exists()) {
-            log.info("creating home dir")
-            home.mkdir()
-        }
         
+        def home = new File(application.getContext().getAsString("muwire-home"))
         def props = new Properties()
         def propsFile = new File(home, "MuWire.properties")
         if (propsFile.exists()) {
@@ -90,9 +87,10 @@ class Ready extends AbstractLifecycleHandler {
                 props.write(it)
             }
         }
+        
         Core core
         try {
-            core = new Core(props, home)
+            core = new Core(props, home, metadata["application.version"])
         } catch (Exception bad) {
             log.log(Level.SEVERE,"couldn't initialize core",bad)
             JOptionPane.showMessageDialog(null, "Couldn't connect to I2P router.  Make sure I2P is running and restart MuWire",
@@ -111,6 +109,8 @@ class Ready extends AbstractLifecycleHandler {
                 core.eventBus.publish(new FileSharedEvent(file : new File(it)))
             }
         }
+        
+        core.eventBus.publish(new UILoadedEvent())
     }
 }
 

gui/griffon-app/models/com/muwire/gui/MainFrameModel.groovy

@@ -4,15 +4,18 @@ import java.util.concurrent.ConcurrentHashMap
 
 import javax.annotation.Nonnull
 import javax.inject.Inject
+import javax.swing.JOptionPane
 import javax.swing.JTable
 
 import com.muwire.core.Core
 import com.muwire.core.InfoHash
+import com.muwire.core.Persona
 import com.muwire.core.connection.ConnectionAttemptStatus
 import com.muwire.core.connection.ConnectionEvent
 import com.muwire.core.connection.DisconnectionEvent
 import com.muwire.core.download.DownloadStartedEvent
 import com.muwire.core.download.Downloader
+import com.muwire.core.files.FileDownloadedEvent
 import com.muwire.core.files.FileHashedEvent
 import com.muwire.core.files.FileLoadedEvent
 import com.muwire.core.files.FileSharedEvent
@@ -20,22 +23,28 @@ import com.muwire.core.search.QueryEvent
 import com.muwire.core.search.UIResultEvent
 import com.muwire.core.trust.TrustEvent
 import com.muwire.core.trust.TrustService
+import com.muwire.core.update.UpdateAvailableEvent
 import com.muwire.core.upload.UploadEvent
 import com.muwire.core.upload.UploadFinishedEvent
 
 import griffon.core.GriffonApplication
 import griffon.core.artifact.GriffonModel
+import griffon.core.env.Metadata
 import griffon.core.mvc.MVCGroup
 import griffon.inject.MVCMember
 import griffon.transform.FXObservable
 import griffon.transform.Observable
+import net.i2p.data.Base64
 import net.i2p.data.Destination
 import griffon.metadata.ArtifactProviderFor
 
 @ArtifactProviderFor(GriffonModel)
 class MainFrameModel {
+    @Inject Metadata metadata
     @MVCMember @Nonnull
     FactoryBuilderSupport builder
+    @MVCMember @Nonnull
+    MainFrameController controller
     @Inject @Nonnull GriffonApplication application
     @Observable boolean coreInitialized = false
     
@@ -57,7 +66,11 @@ class MainFrameModel {
     private final Set<InfoHash> infoHashes = new HashSet<>()
 
     volatile Core core    
+
+    private long lastRetryTime = System.currentTimeMillis()
     
+    UISettings uiSettings
+        
     void updateTablePreservingSelection(String tableName) {
         def downloadTable = builder.getVariable(tableName)
         int selectedRow = downloadTable.getSelectedRow()
@@ -67,11 +80,28 @@ class MainFrameModel {
     
     void mvcGroupInit(Map<String, Object> args) {
         
+        uiSettings = application.context.get("ui-settings")
+        
         Timer timer = new Timer("download-pumper", true)
         timer.schedule({
             runInsideUIAsync {
                 if (!mvcGroup.alive)
                     return
+                
+                // remove cancelled or finished downloads
+                def toRemove = []    
+                downloads.each {
+                    if (uiSettings.clearCancelledDownloads &&
+                        it.downloader.getCurrentState() == Downloader.DownloadState.CANCELLED)
+                        toRemove << it
+                    if (uiSettings.clearFinishedDownloads &&
+                        it.downloader.getCurrentState() == Downloader.DownloadState.FINISHED)
+                        toRemove << it
+                }
+                toRemove.each {
+                    downloads.remove(it)
+                }    
+                
                 builder.getVariable("uploads-table")?.model.fireTableDataChanged()
                 
                 updateTablePreservingSelection("downloads-table")
@@ -94,20 +124,30 @@ class MainFrameModel {
             core.eventBus.register(UploadFinishedEvent.class, this)
             core.eventBus.register(TrustEvent.class, this)
             core.eventBus.register(QueryEvent.class, this)
+            core.eventBus.register(UpdateAvailableEvent.class, this)
+            core.eventBus.register(FileDownloadedEvent.class, this)
             
-            int retryInterval = application.context.get("muwire-settings").downloadRetryInterval
-            if (retryInterval > 0) {
-                retryInterval *= 60000
-                timer.schedule({
-                    runInsideUIAsync {
-                        downloads.each {
-                            if (it.downloader.currentState == Downloader.DownloadState.FAILED)
-                                it.downloader.resume()
+            timer.schedule({
+                int retryInterval = application.context.get("muwire-settings").downloadRetryInterval
+                if (retryInterval > 0) {
+                    retryInterval *= 60000
+                    long now = System.currentTimeMillis()
+                    if (now - lastRetryTime > retryInterval) {
+                        lastRetryTime = now
+                        runInsideUIAsync {
+                            downloads.each {
+                                def state = it.downloader.currentState
+                                if (state == Downloader.DownloadState.FAILED || 
+                                    state == Downloader.DownloadState.DOWNLOADING)
+                                    it.downloader.resume()
+                                updateTablePreservingSelection("downloads-table")
+                            }
                         }
-                    }
-                }, retryInterval, retryInterval)
-            }
 
+                    }
+                }
+            }, 60000, 60000)
+            
             runInsideUIAsync {
                 trusted.addAll(core.trustService.good.values())
                 distrusted.addAll(core.trustService.bad.values())
@@ -138,7 +178,8 @@ class MainFrameModel {
                 topPanel.getLayout().show(topPanel, "top-search-panel")
             }
             
-            connectionList.add(e.endpoint.destination)
+            UIConnection con = new UIConnection(destination : e.endpoint.destination, incoming : e.incoming)
+            connectionList.add(con)
             JTable table = builder.getVariable("connections-table")
             table.model.fireTableDataChanged()
         }
@@ -153,7 +194,8 @@ class MainFrameModel {
                 topPanel.getLayout().show(topPanel, "top-connect-panel")
             }
             
-            connectionList.remove(e.destination)
+            UIConnection con = new UIConnection(destination : e.destination)
+            connectionList.remove(con)
             JTable table = builder.getVariable("connections-table")
             table.model.fireTableDataChanged()
         }
@@ -219,20 +261,76 @@ class MainFrameModel {
     void onQueryEvent(QueryEvent e) {
         if (e.replyTo == core.me.destination)
             return
-        StringBuilder sb = new StringBuilder()
-        e.searchEvent.searchTerms?.each {
-            sb.append(it)
-            sb.append(" ")
+        
+        def search
+        if (e.searchEvent.searchHash != null) {
+            if (!uiSettings.showSearchHashes) {
+                return
+            }
+            search = Base64.encode(e.searchEvent.searchHash)
+        } else {
+            StringBuilder sb = new StringBuilder()
+            e.searchEvent.searchTerms?.each {
+                sb.append(it)
+                sb.append(" ")
+            }
+            search = sb.toString()
+            if (search.trim().size() == 0)
+                return
         }
-        def search = sb.toString()
-        if (search.trim().size() == 0)
-            return
         runInsideUIAsync {
-            searches.addFirst(search)
+            searches.addFirst(new IncomingSearch(search : search, replyTo : e.replyTo, originator : e.originator))
             while(searches.size() > 200)
                 searches.removeLast()
             JTable table = builder.getVariable("searches-table")
             table.model.fireTableDataChanged()
         }
     }
+    
+    class IncomingSearch {
+        String search
+        Destination replyTo
+        Persona originator
+    }
+    
+    void onUpdateAvailableEvent(UpdateAvailableEvent e) {
+        runInsideUIAsync {
+            
+            int option = JOptionPane.showConfirmDialog(null, 
+                "MuWire $e.version is available from $e.signer.  You have "+ metadata["application.version"]+" Update?",
+                "New MuWire version availble", JOptionPane.OK_CANCEL_OPTION)
+            if (option == JOptionPane.CANCEL_OPTION)
+                return
+            controller.search(e.infoHash,"MuWire update")
+        }
+    }
+    
+    void onFileDownloadedEvent(FileDownloadedEvent e) {
+        if (!core.muOptions.shareDownloadedFiles)
+            return
+        infoHashes.add(e.downloadedFile.infoHash)
+        runInsideUIAsync {
+            shared << e.downloadedFile
+            JTable table = builder.getVariable("shared-files-table")
+            table.model.fireTableDataChanged()
+        }
+    }
+    
+    private static class UIConnection {
+        Destination destination
+        boolean incoming
+        
+        @Override
+        public int hashCode() {
+            destination.hashCode()
+        }
+        
+        @Override
+        public boolean equals(Object o) {
+            if (!(o instanceof UIConnection))
+                return false
+            UIConnection other = (UIConnection) o
+            return destination == other.destination
+        }
+    }
 }

gui/griffon-app/models/com/muwire/gui/OptionsModel.groovy

@@ -0,0 +1,54 @@
+package com.muwire.gui
+
+import com.muwire.core.Core
+import com.muwire.core.MuWireSettings
+
+import griffon.core.artifact.GriffonModel
+import griffon.transform.Observable
+import griffon.metadata.ArtifactProviderFor
+
+@ArtifactProviderFor(GriffonModel)
+class OptionsModel {
+    @Observable String downloadRetryInterval 
+    @Observable String updateCheckInterval
+    @Observable boolean onlyTrusted
+    @Observable boolean shareDownloadedFiles
+    
+    // i2p options
+    @Observable String inboundLength
+    @Observable String inboundQuantity
+    @Observable String outboundLength
+    @Observable String outboundQuantity
+    
+    // gui options
+    @Observable boolean showMonitor
+    @Observable String lnf
+    @Observable String font
+    @Observable boolean clearCancelledDownloads
+    @Observable boolean clearFinishedDownloads
+    @Observable boolean excludeLocalResult
+    @Observable boolean showSearchHashes
+    
+    void mvcGroupInit(Map<String, String> args) {
+        MuWireSettings settings = application.context.get("muwire-settings")
+        downloadRetryInterval = settings.downloadRetryInterval
+        updateCheckInterval = settings.updateCheckInterval
+        onlyTrusted = !settings.allowUntrusted()
+        shareDownloadedFiles = settings.shareDownloadedFiles
+        
+        Core core = application.context.get("core")
+        inboundLength = core.i2pOptions["inbound.length"]
+        inboundQuantity = core.i2pOptions["inbound.quantity"]
+        outboundLength = core.i2pOptions["outbound.length"]
+        outboundQuantity = core.i2pOptions["outbound.quantity"]
+        
+        UISettings uiSettings = application.context.get("ui-settings")
+        showMonitor = uiSettings.showMonitor
+        lnf = uiSettings.lnf
+        font = uiSettings.font
+        clearCancelledDownloads = uiSettings.clearCancelledDownloads
+        clearFinishedDownloads = uiSettings.clearFinishedDownloads
+        excludeLocalResult = uiSettings.excludeLocalResult
+        showSearchHashes = uiSettings.showSearchHashes
+    }
+}

gui/griffon-app/models/com/muwire/gui/SearchTabModel.groovy

@@ -19,12 +19,15 @@ class SearchTabModel {
     FactoryBuilderSupport builder
     
     Core core
+    UISettings uiSettings
     String uuid
     def results = []
+    def hashBucket = [:]
     
     
     void mvcGroupInit(Map<String, String> args) {
         core = mvcGroup.parentGroup.model.core
+        uiSettings = application.context.get("ui-settings")
         mvcGroup.parentGroup.model.results[UUID.fromString(uuid)] = mvcGroup
     }
     
@@ -33,7 +36,17 @@ class SearchTabModel {
     }
     
     void handleResult(UIResultEvent e) {
+        if (uiSettings.excludeLocalResult &&
+            e.sender == core.me)
+            return
         runInsideUIAsync {
+            def bucket = hashBucket.get(e.infohash)
+            if (bucket == null) {
+                bucket = []
+                hashBucket[e.infohash] = bucket
+            }
+            bucket << e
+                            
             results << e
             JTable table = builder.getVariable("results-table")
             table.model.fireTableDataChanged()

gui/griffon-app/views/com/muwire/gui/MainFrameView.groovy

@@ -3,16 +3,24 @@ package com.muwire.gui
 import griffon.core.artifact.GriffonView
 import griffon.inject.MVCMember
 import griffon.metadata.ArtifactProviderFor
+import net.i2p.data.Base64
+import net.i2p.data.DataHelper
 
 import javax.swing.BorderFactory
 import javax.swing.Box
 import javax.swing.BoxLayout
 import javax.swing.JFileChooser
+import javax.swing.JLabel
+import javax.swing.JMenuItem
+import javax.swing.JPopupMenu
 import javax.swing.JSplitPane
+import javax.swing.JTable
 import javax.swing.ListSelectionModel
 import javax.swing.SwingConstants
 import javax.swing.border.Border
+import javax.swing.table.DefaultTableCellRenderer
 
+import com.muwire.core.Constants
 import com.muwire.core.download.Downloader
 import com.muwire.core.files.FileSharedEvent
 
@@ -22,6 +30,10 @@ import java.awt.FlowLayout
 import java.awt.GridBagConstraints
 import java.awt.GridBagLayout
 import java.awt.Insets
+import java.awt.Toolkit
+import java.awt.datatransfer.StringSelection
+import java.awt.event.MouseAdapter
+import java.awt.event.MouseEvent
 import java.nio.charset.StandardCharsets
 
 import javax.annotation.Nonnull
@@ -33,7 +45,12 @@ class MainFrameView {
     @MVCMember @Nonnull
     MainFrameModel model
     
+    def downloadsTable
+    def lastDownloadSortEvent
+    def lastSharedSortEvent
+    
     void initUI() {
+        UISettings settings = application.context.get("ui-settings")
         builder.with {
             application(size : [1024,768], id: 'main-frame',
             locationRelativeTo : null,
@@ -44,6 +61,11 @@ class MainFrameView {
                 imageIcon('/griffon-icon-16x16.png').image],
             pack : false,
             visible : bind { model.coreInitialized }) {
+                menuBar {
+                    menu (text : "Options") {
+                        menuItem("Configuration", actionPerformed : {mvcGroup.createMVCGroup("Options")})
+                    }
+                }
                 borderLayout()
                 panel (border: etchedBorder(), constraints : BorderLayout.NORTH) {
                     borderLayout()
@@ -51,7 +73,8 @@ class MainFrameView {
                         gridLayout(rows:1, cols: 2)
                         button(text: "Searches", actionPerformed : showSearchWindow)
                         button(text: "Uploads", actionPerformed : showUploadsWindow)
-                        button(text: "Monitor", actionPerformed : showMonitorWindow)
+                        if (settings.showMonitor)
+                            button(text: "Monitor", actionPerformed : showMonitorWindow)
                         button(text: "Trust", actionPerformed : showTrustWindow)
                     }
                     panel(id: "top-panel", constraints: BorderLayout.CENTER) {
@@ -90,19 +113,18 @@ class MainFrameView {
                             panel (constraints : JSplitPane.BOTTOM) {
                                 borderLayout()
                                 scrollPane (constraints : BorderLayout.CENTER) {
-                                    table(id : "downloads-table") {
+                                    downloadsTable = table(id : "downloads-table", autoCreateRowSorter : true) {
                                         tableModel(list: model.downloads) {
-                                            closureColumn(header: "Name", type: String, read : {row -> row.downloader.file.getName()})
-                                            closureColumn(header: "Status", type: String, read : {row -> row.downloader.getCurrentState()})
-                                            closureColumn(header: "Progress", type: String, read: { row ->
+                                            closureColumn(header: "Name", preferredWidth: 350, type: String, read : {row -> row.downloader.file.getName()})
+                                            closureColumn(header: "Status", preferredWidth: 50, type: String, read : {row -> row.downloader.getCurrentState().toString()})
+                                            closureColumn(header: "Progress", preferredWidth: 20, type: String, read: { row ->
                                                 int pieces = row.downloader.nPieces
                                                 int done = row.downloader.donePieces()
                                                 "$done/$pieces pieces"
                                             })
-                                            closureColumn(header: "Piece", type: String, read: { row ->
-                                                int position = row.downloader.positionInPiece()
-                                                int pieceSize = row.downloader.pieceSize // TODO: fix for last piece
-                                                "$position/$pieceSize bytes"
+                                            closureColumn(header: "Sources", preferredWidth : 10, type: Integer, read : {row -> row.downloader.activeWorkers()})
+                                            closureColumn(header: "Speed", preferredWidth: 50, type:String, read :{row -> 
+                                                DataHelper.formatSize2Decimal(row.downloader.speed(), false) + "B/sec"
                                             })
                                         }
                                     }
@@ -122,10 +144,10 @@ class MainFrameView {
                                 button(text : "Click here to share files", actionPerformed : shareFiles)
                             }
                             scrollPane ( constraints : BorderLayout.CENTER) {
-                                table(id : "shared-files-table") {
+                                table(id : "shared-files-table", autoCreateRowSorter: true) {
                                      tableModel(list : model.shared) {
-                                         closureColumn(header : "Name", type : String, read : {row -> row.file.getAbsolutePath()})
-                                         closureColumn(header : "Size", type : Long, read : {row -> row.file.length()})
+                                         closureColumn(header : "Name", preferredWidth : 550, type : String, read : {row -> row.file.getAbsolutePath()})
+                                         closureColumn(header : "Size", preferredWidth : 50, type : Long, read : {row -> row.file.length() })
                                      }   
                                 }
                             }
@@ -164,7 +186,13 @@ class MainFrameView {
                             scrollPane(constraints : BorderLayout.CENTER) {
                                 table(id : "connections-table") {
                                     tableModel(list : model.connectionList) {
-                                        closureColumn(header : "Destination", type: String, read : { row -> row.toBase32() })
+                                        closureColumn(header : "Destination", preferredWidth: 250, type: String, read : { row -> row.destination.toBase32() })
+                                        closureColumn(header : "Direction", preferredWidth: 20, type: String, read : { row ->
+                                            if (row.incoming)
+                                                return "In"
+                                            else 
+                                                return "Out"
+                                        })
                                     }
                                 }
                             }
@@ -177,7 +205,17 @@ class MainFrameView {
                             scrollPane(constraints : BorderLayout.CENTER) {
                                 table(id : "searches-table") {
                                     tableModel(list : model.searches) {
-                                        closureColumn(header : "Keywords", type : String, read : { it })
+                                        closureColumn(header : "Keywords", type : String, read : { 
+                                            sanitized = it.search.replace('<', ' ')
+                                            sanitized 
+                                        })
+                                        closureColumn(header : "From", type : String, read : {
+                                            if (it.originator != null) {
+                                                return it.originator.getHumanReadableName()
+                                            } else {
+                                                return it.replyTo.toBase32()
+                                            }
+                                        })
                                     }
                                 }
                             }
@@ -188,7 +226,7 @@ class MainFrameView {
                         panel (border : etchedBorder()){
                             borderLayout()
                             scrollPane(constraints : BorderLayout.CENTER) {
-                                table(id : "trusted-table") {
+                                table(id : "trusted-table", autoCreateRowSorter : true) {
                                     tableModel(list : model.trusted) {
                                         closureColumn(header : "Trusted Users", type : String, read : { it.getHumanReadableName() } )
                                     }
@@ -203,7 +241,7 @@ class MainFrameView {
                         panel (border : etchedBorder()){
                             borderLayout()
                             scrollPane(constraints : BorderLayout.CENTER) {
-                                table(id : "distrusted-table") {
+                                table(id : "distrusted-table", autoCreateRowSorter : true) {
                                     tableModel(list : model.distrusted) {
                                         closureColumn(header: "Distrusted Users", type : String, read : { it.getHumanReadableName() } )
                                     }
@@ -235,16 +273,24 @@ class MainFrameView {
         def selectionModel = downloadsTable.getSelectionModel()
         selectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION)
         selectionModel.addListSelectionListener({
-            int selectedRow = downloadsTable.getSelectedRow()
-            def downloader = model.downloads[selectedRow].downloader
+            int selectedRow = selectedDownloaderRow()
+            if (selectedRow < 0) {
+                model.cancelButtonEnabled = false
+                model.retryButtonEnabled = false
+                return
+            }
+            def downloader = model.downloads[selectedRow]?.downloader
+            if (downloader == null)
+                return
             switch(downloader.getCurrentState()) {
                 case Downloader.DownloadState.CONNECTING :
                 case Downloader.DownloadState.DOWNLOADING :
+                case Downloader.DownloadState.HASHLIST:
                 model.cancelButtonEnabled = true
                 model.retryButtonEnabled = false
                 break
                 case Downloader.DownloadState.FAILED:
-                model.cancelButtonEnabled = false
+                model.cancelButtonEnabled = true
                 model.retryButtonEnabled = true
                 break
                 default:
@@ -252,8 +298,94 @@ class MainFrameView {
                 model.retryButtonEnabled = false
             }
         })
+        
+        def centerRenderer = new DefaultTableCellRenderer()
+        centerRenderer.setHorizontalAlignment(JLabel.CENTER)
+        downloadsTable.setDefaultRenderer(Integer.class, centerRenderer)
+        
+        downloadsTable.rowSorter.addRowSorterListener({evt -> lastDownloadSortEvent = evt})
+        downloadsTable.rowSorter.setSortsOnUpdates(true)
+        
+        // shared files table
+        def sharedFilesTable = builder.getVariable("shared-files-table")
+        sharedFilesTable.columnModel.getColumn(1).setCellRenderer(new SizeRenderer())
+        
+        sharedFilesTable.rowSorter.addRowSorterListener({evt -> lastSharedSortEvent = evt})
+        sharedFilesTable.rowSorter.setSortsOnUpdates(true)
+        
+        JPopupMenu sharedFilesMenu = new JPopupMenu()
+//        JMenuItem unshareSelectedFiles = new JMenuItem("Unshare selected files")
+//        unshareSelectedFiles.addActionListener({mvcGroup.controller.unshareSelectedFiles()})
+        JMenuItem copyHashToClipboard = new JMenuItem("Copy hash to clipboard")
+        copyHashToClipboard.addActionListener({mvcGroup.view.copyHashToClipboard(sharedFilesTable)})
+        sharedFilesMenu.add(copyHashToClipboard)
+        sharedFilesTable.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseReleased(MouseEvent e) {
+                if (e.isPopupTrigger())
+                    showPopupMenu(sharedFilesMenu, e)
+            }
+            @Override
+            public void mousePressed(MouseEvent e) {
+                if (e.isPopupTrigger())
+                    showPopupMenu(sharedFilesMenu, e)
+            }
+        })
+        
+        // searches table
+        def searchesTable = builder.getVariable("searches-table")
+        JPopupMenu searchTableMenu = new JPopupMenu()
+        JMenuItem copySearchToClipboard = new JMenuItem("Copy search to clipboard")
+        copySearchToClipboard.addActionListener({mvcGroup.view.copySearchToClipboard(searchesTable)})
+        searchTableMenu.add(copySearchToClipboard)
+        searchesTable.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseReleased(MouseEvent e) {
+                if (e.isPopupTrigger())
+                    showPopupMenu(searchTableMenu, e)
+            }
+            @Override
+            public void mousePressed(MouseEvent e) {
+                if (e.isPopupTrigger())
+                    showPopupMenu(searchTableMenu, e)
+            }
+        })
+        
+    }
+    
+    def showPopupMenu(JPopupMenu menu, MouseEvent event) {
+        menu.show(event.getComponent(), event.getX(), event.getY())
+    }
+    
+    def copyHashToClipboard(JTable sharedFilesTable) {
+        int selected = sharedFilesTable.getSelectedRow()
+        if (selected < 0)
+            return
+        if (lastSharedSortEvent != null) 
+            selected = sharedFilesTable.rowSorter.convertRowIndexToModel(selected)
+        String root = Base64.encode(model.shared[selected].infoHash.getRoot())
+        StringSelection selection = new StringSelection(root)
+        def clipboard = Toolkit.getDefaultToolkit().getSystemClipboard()
+        clipboard.setContents(selection, null)
+    }
+    
+    def copySearchToClipboard(JTable searchesTable) {
+        int selected = searchesTable.getSelectedRow()
+        if (selected < 0)
+            return
+        String search = model.searches[selected].search
+        StringSelection selection = new StringSelection(search)
+        def clipboard = Toolkit.getDefaultToolkit().getSystemClipboard()
+        clipboard.setContents(selection, null)
     }
 
+    int selectedDownloaderRow() {
+        int selected = builder.getVariable("downloads-table").getSelectedRow()
+        if (lastDownloadSortEvent != null)
+            selected = lastDownloadSortEvent.convertPreviousRowIndexToModel(selected)
+        selected
+    }
+    
     def showSearchWindow = {
         def cardsPanel = builder.getVariable("cards-panel")
         cardsPanel.getLayout().show(cardsPanel, "search window")

gui/griffon-app/views/com/muwire/gui/OptionsView.groovy

@@ -0,0 +1,132 @@
+package com.muwire.gui
+
+import griffon.core.artifact.GriffonView
+import griffon.inject.MVCMember
+import griffon.metadata.ArtifactProviderFor
+
+import javax.swing.JDialog
+import javax.swing.JPanel
+import javax.swing.JTabbedPane
+import javax.swing.SwingConstants
+
+import java.awt.BorderLayout
+import java.awt.event.WindowAdapter
+import java.awt.event.WindowEvent
+
+import javax.annotation.Nonnull
+
+@ArtifactProviderFor(GriffonView)
+class OptionsView {
+    @MVCMember @Nonnull
+    FactoryBuilderSupport builder
+    @MVCMember @Nonnull
+    OptionsModel model
+
+    def d
+    def p
+    def i
+    def u
+    
+    def retryField
+    def updateField
+    def allowUntrustedCheckbox
+    def shareDownloadedCheckbox
+    
+    def inboundLengthField
+    def inboundQuantityField
+    def outboundLengthField
+    def outboundQuantityField
+
+    def lnfField
+    def monitorCheckbox
+    def fontField
+    def clearCancelledDownloadsCheckbox
+    def clearFinishedDownloadsCheckbox
+    def excludeLocalResultCheckbox
+    def showSearchHashesCheckbox
+    
+    def buttonsPanel    
+    
+    def mainFrame
+    
+    void initUI() {
+        mainFrame = application.windowManager.findWindow("main-frame")
+        d = new JDialog(mainFrame, "Options", true)
+        d.setResizable(false)
+        p = builder.panel {
+            gridBagLayout()
+            label(text : "Retry failed downloads every", constraints : gbc(gridx: 0, gridy: 0))
+            retryField = textField(text : bind { model.downloadRetryInterval }, columns : 2, constraints : gbc(gridx: 1, gridy: 0))
+            label(text : "minutes", constraints : gbc(gridx : 2, gridy: 0))
+            
+            label(text : "Check for updates every", constraints : gbc(gridx : 0, gridy: 1))
+            updateField = textField(text : bind {model.updateCheckInterval }, columns : 2, constraints : gbc(gridx : 1, gridy: 1))
+            label(text : "hours", constraints : gbc(gridx: 2, gridy : 1))
+
+            label(text : "Allow only trusted connections", constraints : gbc(gridx: 0, gridy : 2))
+            allowUntrustedCheckbox = checkBox(selected : bind {model.onlyTrusted}, constraints : gbc(gridx: 1, gridy : 2))
+            
+            label(text : "Share downloaded files", constraints : gbc(gridx : 0, gridy:3))
+            shareDownloadedCheckbox = checkBox(selected : bind {model.shareDownloadedFiles}, constraints : gbc(gridx :1, gridy:3))
+                        
+        }
+        i = builder.panel {
+            gridBagLayout()
+            label(text : "Changing these settings requires a restart", constraints : gbc(gridx : 0, gridy : 0, gridwidth: 2))
+            label(text : "Inbound Length", constraints : gbc(gridx:0, gridy:1))
+            inboundLengthField = textField(text : bind {model.inboundLength}, columns : 2, constraints : gbc(gridx:1, gridy:1))
+            label(text : "Inbound Quantity", constraints : gbc(gridx:0, gridy:2))
+            inboundQuantityField = textField(text : bind {model.inboundQuantity}, columns : 2, constraints : gbc(gridx:1, gridy:2))
+            label(text : "Outbound Length", constraints : gbc(gridx:0, gridy:3))
+            outboundLengthField = textField(text : bind {model.outboundLength}, columns : 2, constraints : gbc(gridx:1, gridy:3))
+            label(text : "Outbound Quantity", constraints : gbc(gridx:0, gridy:4))
+            outboundQuantityField = textField(text : bind {model.outboundQuantity}, columns : 2, constraints : gbc(gridx:1, gridy:4))
+        }
+        u = builder.panel {
+            gridBagLayout()
+            label(text : "Changing these settings requires a restart", constraints : gbc(gridx : 0, gridy : 0, gridwidth: 2))
+            label(text : "Look And Feel", constraints : gbc(gridx: 0, gridy:1))
+            lnfField = textField(text : bind {model.lnf}, columns : 4, constraints : gbc(gridx : 1, gridy : 1))
+            label(text : "Font", constraints : gbc(gridx: 0, gridy : 2))
+            fontField = textField(text : bind {model.font}, columns : 4, constraints : gbc(gridx : 1, gridy:2))
+            label(text : "Show Monitor", constraints : gbc(gridx :0, gridy: 3))
+            monitorCheckbox = checkBox(selected : bind {model.showMonitor}, constraints : gbc(gridx : 1, gridy: 3))
+            label(text : "Clear Cancelled Downloads", constraints: gbc(gridx: 0, gridy:4))
+            clearCancelledDownloadsCheckbox = checkBox(selected : bind {model.clearCancelledDownloads}, constraints : gbc(gridx : 1, gridy:4))
+            label(text : "Clear Finished Downloads", constraints: gbc(gridx: 0, gridy:5))
+            clearFinishedDownloadsCheckbox = checkBox(selected : bind {model.clearFinishedDownloads}, constraints : gbc(gridx : 1, gridy:5))
+            label(text : "Exclude Local Files From Results", constraints: gbc(gridx:0, gridy:6))
+            excludeLocalResultCheckbox = checkBox(selected : bind {model.excludeLocalResult}, constraints : gbc(gridx: 1, gridy : 6))
+            label(text : "Show Hash Searches In Monitor", constraints: gbc(gridx:0, gridy:7))
+            showSearchHashesCheckbox = checkBox(selected : bind {model.showSearchHashes}, constraints : gbc(gridx: 1, gridy: 7))
+        }
+        buttonsPanel = builder.panel {
+            gridBagLayout()
+            button(text : "Save", constraints : gbc(gridx : 1, gridy: 2), saveAction)
+            button(text : "Cancel", constraints : gbc(gridx : 2, gridy: 2), cancelAction)
+        }
+    }
+    
+    void mvcGroupInit(Map<String,String> args) {
+        def tabbedPane = new JTabbedPane()
+        tabbedPane.addTab("MuWire", p)
+        tabbedPane.addTab("I2P", i)
+        tabbedPane.addTab("GUI", u)
+                
+        JPanel panel = new JPanel()
+        panel.setLayout(new BorderLayout())
+        panel.add(tabbedPane, BorderLayout.CENTER)
+        panel.add(buttonsPanel, BorderLayout.SOUTH)
+                
+        d.getContentPane().add(panel)
+        d.pack()
+        d.setLocationRelativeTo(mainFrame)
+        d.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE)
+        d.addWindowListener(new WindowAdapter() {
+            public void windowClosed(WindowEvent e) {
+                mvcGroup.destroy()
+            }
+        })
+        d.show()
+    }
+}

gui/griffon-app/views/com/muwire/gui/SearchTabView.groovy

@@ -4,11 +4,26 @@ import griffon.core.artifact.GriffonView
 import griffon.core.mvc.MVCGroup
 import griffon.inject.MVCMember
 import griffon.metadata.ArtifactProviderFor
+import net.i2p.data.Base64
+import net.i2p.data.DataHelper
 
+import javax.swing.JComponent
+import javax.swing.JLabel
+import javax.swing.JMenuItem
+import javax.swing.JPopupMenu
+import javax.swing.JTable
 import javax.swing.ListSelectionModel
 import javax.swing.SwingConstants
+import javax.swing.table.DefaultTableCellRenderer
+
+import com.muwire.core.util.DataUtil
 
 import java.awt.BorderLayout
+import java.awt.Color
+import java.awt.Toolkit
+import java.awt.datatransfer.StringSelection
+import java.awt.event.MouseAdapter
+import java.awt.event.MouseEvent
 
 import javax.annotation.Nonnull
 
@@ -22,26 +37,32 @@ class SearchTabView {
     def pane 
     def parent
     def searchTerms
+    def resultsTable
+    def lastSortEvent
     
     void initUI() {
         builder.with {
             def resultsTable
             def pane = scrollPane {
-                resultsTable = table(id : "results-table") {
+                resultsTable = table(id : "results-table", autoCreateRowSorter : true) {
                     tableModel(list: model.results) {
-                        closureColumn(header: "Name", type: String, read : {row -> row.name})
-                        closureColumn(header: "Size", preferredWidth: 150, type: Long, read : {row -> row.size})
-                        closureColumn(header: "Sender", type: String, read : {row -> row.sender.getHumanReadableName()})
-                        closureColumn(header: "Trust", type: String, read : {row ->
-                          model.core.trustService.getLevel(row.sender.destination)
+                        closureColumn(header: "Name", preferredWidth: 350, type: String, read : {row -> row.name.replace('<','_')})
+                        closureColumn(header: "Size", preferredWidth: 50, type: Long, read : {row -> row.size})
+                        closureColumn(header: "Sources", preferredWidth: 10, type : Integer, read : { row -> model.hashBucket[row.infohash].size()})
+                        closureColumn(header: "Sender", preferredWidth: 170, type: String, read : {row -> row.sender.getHumanReadableName()})
+                        closureColumn(header: "Trust", preferredWidth: 50, type: String, read : {row ->
+                          model.core.trustService.getLevel(row.sender.destination).toString()
                         })
                     }
                 }
             }
+            
             this.pane = pane
             this.pane.putClientProperty("mvc-group", mvcGroup)
             this.pane.putClientProperty("results-table",resultsTable)
-            
+
+            this.resultsTable = resultsTable
+                        
             def selectionModel = resultsTable.getSelectionModel()
             selectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION)
             selectionModel.addListSelectionListener( {
@@ -54,7 +75,7 @@ class SearchTabView {
         searchTerms = args["search-terms"]
         parent = mvcGroup.parentGroup.view.builder.getVariable("result-tabs")
         parent.addTab(searchTerms, pane)
-        int index = parent.indexOfTab(searchTerms)
+        int index = parent.indexOfComponent(pane)
         parent.setSelectedIndex(index)
         
         def tabPanel
@@ -70,6 +91,41 @@ class SearchTabView {
         }
         
         parent.setTabComponentAt(index, tabPanel)
+        
+        def centerRenderer = new DefaultTableCellRenderer()
+        centerRenderer.setHorizontalAlignment(JLabel.CENTER)
+        resultsTable.columnModel.getColumn(1).setCellRenderer(centerRenderer)
+        resultsTable.setDefaultRenderer(Integer.class,centerRenderer)
+        resultsTable.columnModel.getColumn(4).setCellRenderer(centerRenderer)
+        
+        resultsTable.columnModel.getColumn(1).setCellRenderer(new SizeRenderer())
+        
+        
+        resultsTable.rowSorter.addRowSorterListener({ evt -> lastSortEvent = evt})
+        resultsTable.rowSorter.setSortsOnUpdates(true)
+        
+        
+        JPopupMenu menu = new JPopupMenu()
+        JMenuItem download = new JMenuItem("Download")
+        download.addActionListener({mvcGroup.parentGroup.controller.download()})
+        menu.add(download)
+        JMenuItem copyHashToClipboard = new JMenuItem("Copy hash to clipboard")
+        copyHashToClipboard.addActionListener({mvcGroup.view.copyHashToClipboard()})
+        menu.add(copyHashToClipboard)
+        resultsTable.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                if (e.button == MouseEvent.BUTTON3)
+                    showPopupMenu(menu, e)
+                else if (e.button == MouseEvent.BUTTON1 && e.clickCount == 2)
+                    mvcGroup.parentGroup.controller.download()
+            }
+            @Override
+            public void mouseReleased(MouseEvent e) {
+                if (e.button == MouseEvent.BUTTON3)
+                    showPopupMenu(menu, e)
+            }
+        })
     }
     
     def closeTab = {
@@ -78,4 +134,21 @@ class SearchTabView {
         mvcGroup.parentGroup.model.searchButtonsEnabled = false
         mvcGroup.destroy()
     }
+    
+    def showPopupMenu(JPopupMenu menu, MouseEvent e) {
+        println "showing popup menu"
+        menu.show(e.getComponent(), e.getX(), e.getY())
+    }
+    
+    def copyHashToClipboard() {
+        int selected = resultsTable.getSelectedRow()
+        if (selected < 0)
+            return
+        if (lastSortEvent != null)
+            selected = resultsTable.rowSorter.convertRowIndexToModel(selected)
+        String hash = Base64.encode(model.results[selected].infohash.getRoot())
+        StringSelection selection = new StringSelection(hash)
+        def clipboard = Toolkit.getDefaultToolkit().getSystemClipboard()
+        clipboard.setContents(selection, null)
+    }
 }

gui/src/integration-test/groovy/com/muwire/gui/OptionsIntegrationTest.groovy

@@ -0,0 +1,25 @@
+package com.muwire.gui
+
+import griffon.core.test.GriffonFestRule
+import org.fest.swing.fixture.FrameFixture
+import org.junit.Rule
+import org.junit.Test
+
+import static org.junit.Assert.fail
+
+class OptionsIntegrationTest {
+    static {
+        System.setProperty('griffon.swing.edt.violations.check', 'true')
+        System.setProperty('griffon.swing.edt.hang.monitor', 'true')
+    }
+
+    @Rule
+    public final GriffonFestRule fest = new GriffonFestRule()
+
+    private FrameFixture window
+
+    @Test
+    void smokeTest() {
+        fail('Not implemented yet!')
+    }
+}

gui/src/main/groovy/com/muwire/gui/SizeRenderer.groovy

@@ -0,0 +1,29 @@
+package com.muwire.gui
+
+import javax.swing.JComponent
+import javax.swing.JLabel
+import javax.swing.JTable
+import javax.swing.table.DefaultTableCellRenderer
+
+import net.i2p.data.DataHelper
+
+class SizeRenderer extends DefaultTableCellRenderer {
+    SizeRenderer() {
+        setHorizontalAlignment(JLabel.CENTER)
+    }
+    @Override
+    JComponent getTableCellRendererComponent(JTable table, Object value,
+        boolean isSelected, boolean hasFocus, int row, int column) {
+        Long l = (Long) value
+        String formatted = DataHelper.formatSize2Decimal(l, false)+"B"
+        setText(formatted)
+        if (isSelected) {
+            setForeground(table.getSelectionForeground())
+            setBackground(table.getSelectionBackground())
+        } else {
+            setForeground(table.getForeground())
+            setBackground(table.getBackground())
+        }
+        this
+    }
+}

gui/src/main/groovy/com/muwire/gui/UISettings.groovy

@@ -0,0 +1,37 @@
+package com.muwire.gui
+
+class UISettings {
+    
+    String lnf
+    boolean showMonitor
+    String font
+    boolean clearCancelledDownloads
+    boolean clearFinishedDownloads
+    boolean excludeLocalResult
+    boolean showSearchHashes
+    
+    UISettings(Properties props) {
+        lnf = props.getProperty("lnf", "system")
+        showMonitor = Boolean.parseBoolean(props.getProperty("showMonitor", "true"))
+        font = props.getProperty("font",null)
+        clearCancelledDownloads = Boolean.parseBoolean(props.getProperty("clearCancelledDownloads","false"))
+        clearFinishedDownloads = Boolean.parseBoolean(props.getProperty("clearFinishedDownloads","false"))
+        excludeLocalResult = Boolean.parseBoolean(props.getProperty("excludeLocalResult","false"))
+        showSearchHashes = Boolean.parseBoolean(props.getProperty("showSearchHashes","false"))
+    }
+    
+    void write(OutputStream out) throws IOException {
+        Properties props = new Properties()
+        props.setProperty("lnf", lnf)
+        props.setProperty("showMonitor", String.valueOf(showMonitor))
+        props.setProperty("clearCancelledDownloads", String.valueOf(clearCancelledDownloads))
+        props.setProperty("clearFinishedDownloads", String.valueOf(clearFinishedDownloads))
+        props.setProperty("excludeLocalResult", String.valueOf(excludeLocalResult))
+        props.setProperty("showSearchHashes", String.valueOf(showSearchHashes))
+        if (font != null)
+            props.setProperty("font", font)
+            
+            
+        props.store(out, "UI Properties")
+    }
+}

gui/src/test/groovy/com/muwire/gui/OptionsControllerTest.groovy

@@ -0,0 +1,21 @@
+package com.muwire.gui
+
+import griffon.core.test.GriffonUnitRule
+import griffon.core.test.TestFor
+import org.junit.Rule
+import org.junit.Test
+
+import static org.junit.Assert.fail
+
+@TestFor(OptionsController)
+class OptionsControllerTest {
+    private OptionsController controller
+
+    @Rule
+    public final GriffonUnitRule griffon = new GriffonUnitRule()
+
+    @Test
+    void smokeTest() {
+        fail('Not yet implemented!')
+    }
+}

host-cache/build.gradle

@@ -1,2 +1,3 @@
 apply plugin : 'application'
 mainClassName = 'com.muwire.hostcache.HostCache'
+applicationDefaultJvmArgs = ['-Djava.util.logging.config.file=logging.properties']

host-cache/src/main/groovy/com/muwire/hostcache/Crawler.groovy

@@ -1,9 +1,12 @@
 package com.muwire.hostcache
 
+import java.util.logging.Level
 import java.util.stream.Collectors
 
+import groovy.util.logging.Log
 import net.i2p.data.Destination
 
+@Log
 class Crawler {
 
     final def pinger
@@ -22,12 +25,14 @@ class Crawler {
     
     synchronized def handleCrawlerPong(pong, Destination source) {
         if (!inFlight.containsKey(source)) {
+            log.info("response from host that hasn't been crawled")
             return
         }
         Host host = inFlight.remove(source)
         
         if (pong.uuid == null || pong.leafSlots == null || pong.peerSlots == null || pong.peers == null) {
             hostPool.fail(host)
+            log.info("invalid crawler pong")
             return
         }
         
@@ -40,6 +45,7 @@ class Crawler {
         }
         
         if (!uuid.equals(currentUUID)) {
+            log.info("uuid mismatch")
             hostPool.fail(host)
             return
         }
@@ -50,7 +56,9 @@ class Crawler {
         def peers
         try {
             peers = pong.peers.stream().map({b64 -> new Destination(b64)}).collect(Collectors.toSet())
+            log.info("received ${peers.size()} peers")
         } catch (Exception e) {
+            log.log(Level.WARNING,"couldn't parse peers", e)
             hostPool.fail(host)
             return
         }

host-cache/src/main/groovy/com/muwire/hostcache/HostCache.groovy

@@ -1,9 +1,11 @@
 package com.muwire.hostcache
 
+import java.util.logging.Level
 import java.util.stream.Collectors
 
 import groovy.json.JsonOutput
 import groovy.json.JsonSlurper
+import groovy.util.logging.Log
 import net.i2p.client.I2PClientFactory
 import net.i2p.client.I2PSession
 import net.i2p.client.I2PSessionMuxedListener
@@ -12,6 +14,7 @@ import net.i2p.client.datagram.I2PDatagramMaker
 import net.i2p.util.SystemVersion
 import net.i2p.data.*
 
+@Log
 public class HostCache {
 
     public static void main(String[] args) {
@@ -53,7 +56,7 @@ public class HostCache {
         myDest = session.getMyDestination()
         
 		// initialize hostpool and crawler
-		HostPool hostPool = new HostPool(3, 60 * 1000 * 1000)
+		HostPool hostPool = new HostPool(3, 60 * 60 * 1000)
 		Pinger pinger = new Pinger(session)
 		Crawler crawler = new Crawler(pinger, hostPool, 5)
 		
@@ -64,7 +67,7 @@ public class HostCache {
         session.addMuxedSessionListener(new Listener(hostPool: hostPool, toReturn: 2, crawler: crawler), 
             I2PSession.PROTO_DATAGRAM, I2PSession.PORT_ANY)
         session.connect()
-        println "INFO: connected, going to sleep"
+        log.info("connected, going to sleep")
         Thread.sleep(Integer.MAX_VALUE)
         
     }
@@ -77,16 +80,16 @@ public class HostCache {
         
         void reportAbuse(I2PSession sesison, int severity) {}
         void disconnected(I2PSession session) {
-            println "ERROR: session disconnected, exiting"
+            log.severe("session disconnected, exiting")
             System.exit(1)
         }
         void errorOccurred(I2PSession session, String message, Throwable error) {
-            println "ERROR: ${message} ${error}"
+            log.warning("${message} ${error}")
         }
         void messageAvailable(I2PSession session, int msgId, long size, int proto,
             int fromport, int toport) {
             if (proto != I2PSession.PROTO_DATAGRAM) {
-                println "WARN: received unexpected protocol ${proto}"
+                log.warning("received unexpected protocol ${proto}")
                 return
             }
 
@@ -95,19 +98,19 @@ public class HostCache {
             try {
                 dissector.loadI2PDatagram(payload)
                 def sender = dissector.getSender()
-                println "INFO: Received something from ${sender.toBase32()}"
+                def b32 = sender.toBase32()
                 
                 payload = dissector.getPayload()
                 payload = json.parse(payload)
                 if (payload.type == null) {
-                    println "WARN: type field missing"
+                    log.warning("type field missing from $b32")
                     return
                 }
                 switch(payload.type) {
-                    case "Ping" : 
-                    println "Ping"
+                    case "Ping" :
+                    log.info("ping from $b32") 
 					if (payload.leaf == null) {
-						println "WARN: ping didn't specify if leaf"
+						log.warning("ping didn't specify if leaf from $b32")
 						return
 					}
 					payload.leaf = Boolean.parseBoolean(payload.leaf.toString())
@@ -116,14 +119,14 @@ public class HostCache {
 					respond(session, sender, payload)
                     break
                     case "CrawlerPong":
-                    println "CrawlerPong"
+                    log.info("CrawlerPong from $b32")
 					crawler.handleCrawlerPong(payload, sender)
                     break
                     default:
-                    println "WARN: Unexpected message type ${payload.type}, dropping"
+                    log.warning("Unexpected message type ${payload.type}, dropping from $b32")
                 }
             } catch (Exception dfe) {
-                println "WARN: invalid datagram ${dfe}"
+                log.log(Level.WARNING,"invalid datagram", dfe)
             } 
         }
         void messageAvailable(I2PSession session, int msgId, long size) {

settings.gradle

@@ -1,4 +1,6 @@
 include 'pinger'
 include 'host-cache'
+include 'update-server'
 include 'core'
 include 'gui'
+include 'cli'

update-server/build.gradle

@@ -0,0 +1,3 @@
+apply plugin : 'application'
+mainClassName = 'com.muwire.update.UpdateServer'
+applicationDefaultJvmArgs = ['-Djava.util.logging.config.file=logging.properties']

update-server/src/main/groovy/com/muwire/update/UpdateServer.groovy

@@ -0,0 +1,107 @@
+package com.muwire.update
+
+import java.util.logging.Level
+
+import groovy.json.JsonSlurper
+import groovy.util.logging.Log
+import net.i2p.client.I2PClientFactory
+import net.i2p.client.I2PSession
+import net.i2p.client.I2PSessionMuxedListener
+import net.i2p.client.datagram.I2PDatagramDissector
+import net.i2p.client.datagram.I2PDatagramMaker
+
+
+@Log
+class UpdateServer {
+    public static void main(String[] args) {
+        def home = System.getProperty("user.home") + "/.MuWireUpdateServer"
+        home = new File(home)
+        if (!home.exists())
+            home.mkdirs()
+        
+        def keyFile = new File(home, "key.dat")
+        
+        def i2pClientFactory = new I2PClientFactory()
+        def i2pClient = i2pClientFactory.createClient()
+        
+        def myDest
+        def session
+        if (!keyFile.exists()) {
+            def os = new FileOutputStream(keyFile);
+            myDest = i2pClient.createDestination(os)
+            os.close()
+            log.info "No key.dat file was found, so creating a new destination."
+            log.info "This is the destination you want to give out for your new UpdateServer"
+            log.info myDest.toBase64()
+        }
+        
+        def update = new File(home, "update.json")
+        if (!update.exists()) {
+            log.warning("update file doesn't exist, exiting")
+            System.exit(1)
+        }
+        
+        def props = System.getProperties().clone()
+        props.putAt("inbound.nickname", "MuWire UpdateServer")
+        session = i2pClient.createSession(new FileInputStream(keyFile), props)
+        myDest = session.getMyDestination()
+        
+        session.addMuxedSessionListener(new Listener(update), I2PSession.PROTO_DATAGRAM, I2PSession.PORT_ANY)
+        session.connect()
+        log.info("Connected, going to sleep")
+        Thread.sleep(Integer.MAX_VALUE)
+        
+    }
+    
+    static class Listener implements I2PSessionMuxedListener {
+        
+        private final File json
+        private final def slurper = new JsonSlurper()
+        Listener(File json) {
+            this.json = json
+        }
+
+        @Override
+        public void messageAvailable(I2PSession session, int msgId, long size) {
+        }
+
+        @Override
+        public void messageAvailable(I2PSession session, int msgId, long size, int proto, int fromport, int toport) {
+            if (proto != I2PSession.PROTO_DATAGRAM) {
+                log.warning("received uknown protocol $proto")
+                return
+            }
+            
+            def payload = session.receiveMessage(msgId)
+            def dissector = new I2PDatagramDissector()
+            try {
+                dissector.loadI2PDatagram(payload)
+                def sender = dissector.getSender()
+                payload = slurper.parse(dissector.getPayload())
+                log.info("Got an update ping from "+sender.toBase32() + " reported version "+payload?.myVersion)
+                
+                def maker = new I2PDatagramMaker(session)
+                def response = maker.makeI2PDatagram(json.bytes)
+                session.sendMessage(sender, response, I2PSession.PROTO_DATAGRAM, 0, 2)
+            } catch (Exception e) {
+                log.log(Level.WARNING, "exception responding to update request",e)
+            }
+        }
+
+        @Override
+        public void reportAbuse(I2PSession session, int severity) {
+        }
+
+        @Override
+        public void disconnected(I2PSession session) {
+            Log.severe("Disconnected from I2P router")
+            System.exit(1)
+        }
+
+        @Override
+        public void errorOccurred(I2PSession session, String message, Throwable error) {
+            log.log(Level.SEVERE, message, error)
+        }
+        
+    }
+}