diff --git a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/IncomingJingleFileOffer.java b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/IncomingJingleFileOffer.java
index c694b360f..c8ce07963 100644
--- a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/IncomingJingleFileOffer.java
+++ b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/IncomingJingleFileOffer.java
@@ -126,6 +126,11 @@ public class IncomingJingleFileOffer extends JingleFileTransferSession implement
         return jutil.createAck(transportAccept);
     }
 
+    @Override
+    public void onTransportMethodFailed(String namespace) {
+        //Nothing to do.
+    }
+
     @Override
     public void acceptIncomingFileOffer(final Jingle request, final File target) {
         LOGGER.log(Level.INFO, "Client accepted incoming file offer. Try to start receiving.");
diff --git a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileRequest.java b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileRequest.java
index 01683e655..b45d33240 100644
--- a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileRequest.java
+++ b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileRequest.java
@@ -41,4 +41,9 @@ public class JingleFileRequest extends JingleFileTransferSession {
         return new JingleFileRequest(connection, request.getInitiator(), connection.getUser().asFullJidOrThrow(), Role.responder,
                 request.getSid());
     }
+
+    @Override
+    public void onTransportMethodFailed(String namespace) {
+        //Not implemented
+    }
 }
diff --git a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileTransferManager.java b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileTransferManager.java
index 74eaa1662..298228cba 100644
--- a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileTransferManager.java
+++ b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/JingleFileTransferManager.java
@@ -118,8 +118,8 @@ public final class JingleFileTransferManager extends Manager implements JingleHa
         } //File Request
         else if (content.getSenders() == JingleContent.Senders.responder) {
             return JingleFileRequest.createIncomingFileRequest(connection(), request);
-
-        } else {
+        }
+        else {
             // If senders is neither initiator, nor responder, consider session malformed.
             // See XEP-0166 §6.3 Example 16 and XEP-0234 §4.1
             LOGGER.log(Level.WARNING, "Jingle has invalid sender value. Only initiator and responder are allowed.");
diff --git a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/OutgoingJingleFileOffer.java b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/OutgoingJingleFileOffer.java
index 68f762905..1f46197ca 100644
--- a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/OutgoingJingleFileOffer.java
+++ b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/OutgoingJingleFileOffer.java
@@ -27,6 +27,7 @@ import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smackx.bytestreams.BytestreamSession;
 import org.jivesoftware.smackx.jingle.JingleManager;
 import org.jivesoftware.smackx.jingle.JingleTransportMethodManager;
+import org.jivesoftware.smackx.jingle.JingleUtil;
 import org.jivesoftware.smackx.jingle.Role;
 import org.jivesoftware.smackx.jingle.element.Jingle;
 import org.jivesoftware.smackx.jingle.element.JingleContent;
@@ -161,4 +162,38 @@ public class OutgoingJingleFileOffer extends JingleFileTransferSession {
 
         return jutil.createAck(transportReplace);
     }
+
+    @Override
+    public IQ handleTransportAccept(Jingle transportAccept)
+            throws SmackException.NotConnectedException, InterruptedException {
+        return handleSessionAccept(transportAccept);
+    }
+
+    @Override
+    public void onTransportMethodFailed(String namespace) {
+        state = State.pending;
+        JingleContent content = contents.get(0);
+        failedTransportMethods.add(namespace);
+        JingleTransportMethodManager tm = JingleTransportMethodManager.getInstanceFor(getConnection());
+        JingleTransportManager<?> next = tm.getBestAvailableTransportManager(failedTransportMethods);
+
+        if (next == null) {
+            //Failure
+            try {
+                new JingleUtil(getConnection()).sendSessionTerminateUnsupportedTransports(getRemote(), getSessionId());
+            } catch (InterruptedException | SmackException.NoResponseException | SmackException.NotConnectedException | XMPPException.XMPPErrorException e) {
+                LOGGER.log(Level.WARNING, "Could not send session-terminate.", e);
+            }
+            return;
+        }
+
+        //Replace transport
+        this.transportSession = next.transportSession(this);
+        try {
+            jutil.sendTransportReplace(getRemote(), getInitiator(), getSessionId(), content.getCreator(), content.getName(),
+                    transportSession.createTransport());
+        } catch (SmackException.NotConnectedException | SmackException.NoResponseException | XMPPException.XMPPErrorException | InterruptedException e) {
+            LOGGER.log(Level.WARNING, "Could not send transport-replace.", e);
+        }
+    }
 }
diff --git a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/ReceiveTask.java b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/ReceiveTask.java
index 2909f62b9..a64a1d956 100644
--- a/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/ReceiveTask.java
+++ b/smack-experimental/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/ReceiveTask.java
@@ -56,7 +56,7 @@ public class ReceiveTask implements Runnable {
             byte[] filebuf = new byte[transfer.getSize()];
             int read = 0;
             byte[] bufbuf = new byte[2048];
-
+            LOGGER.log(Level.INFO, "Begin receiving.");
             while (read < filebuf.length) {
                 int r = inputStream.read(bufbuf);
                 if (r >= 0) {
@@ -68,6 +68,7 @@ public class ReceiveTask implements Runnable {
             }
 
             outputStream.write(filebuf);
+            LOGGER.log(Level.INFO, "File successfully received.");
 
         } catch (IOException e) {
             LOGGER.log(Level.SEVERE, "Error while receiving data: ", e);
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleSession.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleSession.java
index b90f53046..f11302249 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleSession.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleSession.java
@@ -17,6 +17,7 @@
 package org.jivesoftware.smackx.jingle;
 
 import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -35,6 +36,7 @@ import org.jxmpp.jid.FullJid;
 
 public abstract class JingleSession implements JingleSessionHandler {
     private static final Logger LOGGER = Logger.getLogger(JingleSession.class.getName());
+    protected HashSet<String> failedTransportMethods = new HashSet<>();
 
     protected final FullJid local;
 
@@ -46,7 +48,7 @@ public abstract class JingleSession implements JingleSessionHandler {
 
     protected final List<JingleContent> contents = new ArrayList<>();
 
-    protected ExecutorService threadPool = Executors.newSingleThreadExecutor();
+    protected static ExecutorService threadPool = Executors.newSingleThreadExecutor();
     protected ArrayList<Future<?>> queued = new ArrayList<>();
     protected JingleTransportSession<?> transportSession;
 
@@ -220,7 +222,7 @@ public abstract class JingleSession implements JingleSessionHandler {
         return IQ.createResultIQ(securityInfo);
     }
 
-    protected IQ handleTransportAccept(Jingle transportAccept) {
+    protected IQ handleTransportAccept(Jingle transportAccept) throws SmackException.NotConnectedException, InterruptedException {
         return IQ.createResultIQ(transportAccept);
     }
 
@@ -236,4 +238,6 @@ public abstract class JingleSession implements JingleSessionHandler {
 
     public abstract XMPPConnection getConnection();
 
+    public abstract void onTransportMethodFailed(String namespace);
+
 }
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleTransportMethodManager.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleTransportMethodManager.java
index 38b93a819..19206384b 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleTransportMethodManager.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/JingleTransportMethodManager.java
@@ -18,6 +18,7 @@ package org.jivesoftware.smackx.jingle;
 
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.Set;
 import java.util.WeakHashMap;
 
 import org.jivesoftware.smack.Manager;
@@ -106,4 +107,26 @@ public final class JingleTransportMethodManager extends Manager {
 
         return null;
     }
+
+    public JingleTransportManager<?> getBestAvailableTransportManager(Set<String> except) {
+        JingleTransportManager<?> tm;
+        for (String ns : transportPreference) {
+            tm = getTransportManager(ns);
+            if (tm != null) {
+                if (except.contains(tm.getNamespace())) {
+                    continue;
+                }
+                return tm;
+            }
+        }
+
+        for (String ns : transportManagers.keySet()) {
+            if (except.contains(ns)) {
+                continue;
+            }
+            return getTransportManager(ns);
+        }
+
+        return null;
+    }
 }
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/JingleS5BTransportSession.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/JingleS5BTransportSession.java
index ad44151f3..c3f14aa85 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/JingleS5BTransportSession.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/JingleS5BTransportSession.java
@@ -46,7 +46,7 @@ import org.jivesoftware.smackx.jingle.transports.jingle_s5b.elements.JingleS5BTr
 import org.jivesoftware.smackx.jingle.transports.jingle_s5b.elements.JingleS5BTransportInfo;
 
 /**
- * Created by vanitas on 26.06.17.
+ * Handler that handles Jingle Socks5Bytestream transports (XEP-0260).
  */
 public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BTransport> {
     private static final Logger LOGGER = Logger.getLogger(JingleS5BTransportSession.class.getName());
@@ -78,9 +78,9 @@ public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BT
                         Socks5Utils.createDigest(sid, jingleSession.getLocal(), jingleSession.getRemote()));
 
         //Local host
-        //for (Bytestream.StreamHost host : transportManager().getLocalStreamHosts()) {
-        //    jb.addTransportCandidate(new JingleS5BTransportCandidate(host, 100));
-        //}
+        for (Bytestream.StreamHost host : transportManager().getLocalStreamHosts()) {
+            jb.addTransportCandidate(new JingleS5BTransportCandidate(host, 100, JingleS5BTransportCandidate.Type.direct));
+        }
 
         List<Bytestream.StreamHost> remoteHosts;
         try {
@@ -91,7 +91,7 @@ public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BT
         }
 
         for (Bytestream.StreamHost host : remoteHosts) {
-            jb.addTransportCandidate(new JingleS5BTransportCandidate(host, 0));
+            jb.addTransportCandidate(new JingleS5BTransportCandidate(host, 0, JingleS5BTransportCandidate.Type.proxy));
         }
 
         return jb.build();
@@ -222,7 +222,7 @@ public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BT
     }
 
     public IQ handleCandidateActivate(Jingle jingle) {
-        LOGGER.log(Level.INFO, "handleChandidateActivate");
+        LOGGER.log(Level.INFO, "handleCandidateActivate");
         Socks5BytestreamSession bs = new Socks5BytestreamSession(ourChoice.socket,
                 ourChoice.candidate.getJid().asBareJid().equals(jingleSession.getRemote().asBareJid()));
         callback.onSessionInitiated(bs);
@@ -256,7 +256,7 @@ public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BT
 
         if (ourChoice == CANDIDATE_FAILURE && theirChoice == CANDIDATE_FAILURE) {
             LOGGER.log(Level.INFO, "Failure.");
-            // TODO: Transport failed.
+            jingleSession.onTransportMethodFailed(getNamespace());
             return;
         }
 
@@ -278,19 +278,18 @@ public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BT
             nominated = theirChoice;
         }
 
-        boolean ourExternalProxy = !nominated.candidate.getJid().asBareJid().equals(jingleSession.getLocal().asBareJid());
-        boolean theirExternalProxy = !nominated.candidate.getJid().asBareJid().equals(jingleSession.getRemote().asBareJid());
-
         if (nominated == theirChoice) {
             LOGGER.log(Level.INFO, "Their choice, so our proposed candidate is used.");
+            boolean isProxy = nominated.candidate.getType() == JingleS5BTransportCandidate.Type.proxy;
             try {
                 nominated = connectToOurCandidate(nominated.candidate);
             } catch (InterruptedException | IOException | XMPPException | SmackException | TimeoutException e) {
                 LOGGER.log(Level.INFO, "Could not connect to our candidate.", e);
+                //TODO: Proxy-Error
                 return;
             }
 
-            if (ourExternalProxy) {
+            if (isProxy) {
                 LOGGER.log(Level.INFO, "Is external proxy. Activate it.");
                 Bytestream activate = new Bytestream(ourProposal.getStreamId());
                 activate.setMode(null);
@@ -304,32 +303,33 @@ public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BT
                     LOGGER.log(Level.WARNING, "Could not activate proxy.", e);
                     return;
                 }
-            }
 
-            LOGGER.log(Level.INFO, "Send candidate-activate.");
-            Jingle candidateActivate = transportManager().createCandidateActivated(
-                    jingleSession.getRemote(), jingleSession.getInitiator(), jingleSession.getSessionId(),
-                    content.getSenders(), content.getCreator(), content.getName(), nominated.transport.getStreamId(),
-                    nominated.candidate.getCandidateId());
-            try {
-                jingleSession.getConnection().createStanzaCollectorAndSend(candidateActivate)
-                        .nextResultOrThrow();
-            } catch (InterruptedException | XMPPException.XMPPErrorException | SmackException.NotConnectedException | SmackException.NoResponseException e) {
-                LOGGER.log(Level.WARNING, "Could not send candidate-activated", e);
-                return;
+                LOGGER.log(Level.INFO, "Send candidate-activate.");
+                Jingle candidateActivate = transportManager().createCandidateActivated(
+                        jingleSession.getRemote(), jingleSession.getInitiator(), jingleSession.getSessionId(),
+                        content.getSenders(), content.getCreator(), content.getName(), nominated.transport.getStreamId(),
+                        nominated.candidate.getCandidateId());
+                try {
+                    jingleSession.getConnection().createStanzaCollectorAndSend(candidateActivate)
+                            .nextResultOrThrow();
+                } catch (InterruptedException | XMPPException.XMPPErrorException | SmackException.NotConnectedException | SmackException.NoResponseException e) {
+                    LOGGER.log(Level.WARNING, "Could not send candidate-activated", e);
+                    return;
+                }
             }
 
             LOGGER.log(Level.INFO, "Start transmission.");
-            Socks5BytestreamSession bs = new Socks5BytestreamSession(nominated.socket, !ourExternalProxy);
+            Socks5BytestreamSession bs = new Socks5BytestreamSession(nominated.socket, !isProxy);
             callback.onSessionInitiated(bs);
 
         }
         //Our choice
         else {
             LOGGER.log(Level.INFO, "Our choice, so their candidate was used.");
-            if (!theirExternalProxy) {
+            boolean isProxy = nominated.candidate.getType() == JingleS5BTransportCandidate.Type.proxy;
+            if (!isProxy) {
                 LOGGER.log(Level.INFO, "Direct connection.");
-                Socks5BytestreamSession bs = new Socks5BytestreamSession(nominated.socket, !ourExternalProxy);
+                Socks5BytestreamSession bs = new Socks5BytestreamSession(nominated.socket, true);
                 callback.onSessionInitiated(bs);
             } else {
                 LOGGER.log(Level.INFO, "Our choice was their external proxy. wait for candidate-activate.");
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/elements/JingleS5BTransportCandidate.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/elements/JingleS5BTransportCandidate.java
index 284fc72e9..d322d1e63 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/elements/JingleS5BTransportCandidate.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/jingle/transports/jingle_s5b/elements/JingleS5BTransportCandidate.java
@@ -66,8 +66,8 @@ public final class JingleS5BTransportCandidate extends JingleContentTransportCan
         this.type = type;
     }
 
-    public JingleS5BTransportCandidate(Bytestream.StreamHost streamHost, int priority) {
-        this(StringUtils.randomString(24), streamHost.getAddress(), streamHost.getJID(), streamHost.getPort(), priority, Type.proxy);
+    public JingleS5BTransportCandidate(Bytestream.StreamHost streamHost, int priority, Type type) {
+        this(StringUtils.randomString(24), streamHost.getAddress(), streamHost.getJID(), streamHost.getPort(), priority, type);
     }
 
     public enum Type {
diff --git a/smack-integration-test/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/FileTransferTest.java b/smack-integration-test/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/FileTransferTest.java
new file mode 100644
index 000000000..25321a7f4
--- /dev/null
+++ b/smack-integration-test/src/main/java/org/jivesoftware/smackx/jingle_filetransfer/FileTransferTest.java
@@ -0,0 +1,111 @@
+package org.jivesoftware.smackx.jingle_filetransfer;
+
+import static junit.framework.TestCase.fail;
+import static org.junit.Assert.assertArrayEquals;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.logging.Level;
+
+import org.jivesoftware.smack.SmackException;
+import org.jivesoftware.smack.XMPPException;
+import org.jivesoftware.smackx.bytestreams.socks5.Socks5Proxy;
+import org.jivesoftware.smackx.jingle.element.Jingle;
+import org.jivesoftware.smackx.jingle_filetransfer.callback.IncomingFileOfferCallback;
+import org.jivesoftware.smackx.jingle_filetransfer.listener.JingleFileTransferOfferListener;
+
+import org.igniterealtime.smack.inttest.AbstractSmackIntegrationTest;
+import org.igniterealtime.smack.inttest.SmackIntegrationTest;
+import org.igniterealtime.smack.inttest.SmackIntegrationTestEnvironment;
+import org.junit.AfterClass;
+import org.jxmpp.jid.FullJid;
+
+/**
+ * Created by vanitas on 29.06.17.
+ */
+public class FileTransferTest extends AbstractSmackIntegrationTest {
+
+    private static final File tempDir;
+
+    static {
+        String userHome = System.getProperty("user.home");
+        if (userHome != null) {
+            File f = new File(userHome);
+            tempDir = new File(f, ".config/smack-integration-test/");
+        } else {
+            tempDir = new File("int_test_jingle");
+        }
+    }
+
+    public FileTransferTest(SmackIntegrationTestEnvironment environment) {
+        super(environment);
+    }
+
+    @SmackIntegrationTest
+    public void basicFileTransferTest() {
+
+        FullJid alice = conOne.getUser().asFullJidOrThrow();
+        FullJid bob = conTwo.getUser().asFullJidOrThrow();
+
+        File source = prepareNewTestFile("source");
+        final File target = new File(tempDir, "target");
+
+        JingleFileTransferManager aftm = JingleFileTransferManager.getInstanceFor(conOne);
+        JingleFileTransferManager bftm = JingleFileTransferManager.getInstanceFor(conTwo);
+
+        bftm.addJingleFileTransferOfferListener(new JingleFileTransferOfferListener() {
+            @Override
+            public void onFileOffer(Jingle request, IncomingFileOfferCallback callback) {
+                callback.acceptIncomingFileOffer(request, target);
+            }
+        });
+
+        try {
+            aftm.sendFile(bob, source);
+        } catch (InterruptedException | SmackException.NoResponseException | SmackException.NotConnectedException | XMPPException.XMPPErrorException e) {
+            fail();
+        }
+
+        byte[] sBytes = new byte[(int) source.length()];
+        byte[] tBytes = new byte[(int) target.length()];
+        try {
+            FileInputStream fi = new FileInputStream(source);
+            fi.read(sBytes);
+            fi.close();
+            fi = new FileInputStream(target);
+            fi.read(tBytes);
+            fi.close();
+        } catch (IOException e) {
+            LOGGER.log(Level.SEVERE, "Could not read files.");
+            fail();
+        }
+
+        assertArrayEquals(sBytes, tBytes);
+        LOGGER.log(Level.INFO, "SUCCESSFULLY SENT AND RECEIVED");
+
+    }
+
+    private File prepareNewTestFile(String name) {
+        File testFile = new File(tempDir, name);
+        try {
+            if (!testFile.exists()) {
+                testFile.createNewFile();
+            }
+            FileOutputStream fo = new FileOutputStream(testFile);
+            byte[] rand = new byte[16000];
+            INSECURE_RANDOM.nextBytes(rand);
+            fo.write(rand);
+            fo.close();
+            return testFile;
+        } catch (IOException e) {
+            return null;
+        }
+    }
+
+    @AfterClass
+    public void cleanup() {
+        Socks5Proxy.getSocks5Proxy().stop();
+    }
+}