added proxy activate and a lot of code clean up. totatly untested

src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java

@@ -48,6 +48,8 @@ public class JingleConnection {
 	private boolean receivedCandidate = false;
 	private boolean sentCandidate = false;
 	
+	private JingleTransport transport = null;
+	
 	private OnIqPacketReceived responseListener = new OnIqPacketReceived() {
 		
 		@Override
@@ -59,6 +61,37 @@ public class JingleConnection {
 		}
 	};
 	
+	final OnFileTransmitted onFileTransmitted = new OnFileTransmitted() {
+		
+		@Override
+		public void onFileTransmitted(JingleFile file) {
+			if (responder.equals(account.getFullJid())) {
+				sendSuccess();
+				mXmppConnectionService.markMessage(message, Message.STATUS_RECIEVED);
+			}
+			Log.d("xmppService","sucessfully transmitted file. sha1:"+file.getSha1Sum());
+		}
+	};
+	
+	private OnProxyActivated onProxyActivated = new OnProxyActivated() {
+		
+		@Override
+		public void success() {
+			if (initiator.equals(account.getFullJid())) {
+				Log.d("xmppService","we were initiating. sending file");
+				transport.send(file,onFileTransmitted);
+			} else {
+				transport.receive(file,onFileTransmitted);
+				Log.d("xmppService","we were responding. receiving file");
+			}
+		}
+		
+		@Override
+		public void failed() {
+			Log.d("xmppService","proxy activation failed");
+		}
+	};
+	
 	public JingleConnection(JingleConnectionManager mJingleConnectionManager) {
 		this.mJingleConnectionManager = mJingleConnectionManager;
 		this.mXmppConnectionService = mJingleConnectionManager.getXmppConnectionService();
@@ -155,7 +188,7 @@ public class JingleConnection {
 		this.sessionId = packet.getSessionId();
 		Content content = packet.getJingleContent();
 		this.transportId = content.getTransportId();
-		this.mergeCandidates(JingleCandidate.parse(content.getCanditates()));
+		this.mergeCandidates(JingleCandidate.parse(content.socks5transport().getChildren()));
 		this.fileOffer = packet.getJingleContent().getFileOffer();
 		if (fileOffer!=null) {
 			this.file = this.mXmppConnectionService.getFileBackend().getJingleFile(message);
@@ -184,10 +217,11 @@ public class JingleConnection {
 		if (message.getType() == Message.TYPE_IMAGE) {
 			content.setAttribute("creator", "initiator");
 			content.setAttribute("name", "a-file-offer");
+			content.setTransportId(this.transportId);
 			this.file = this.mXmppConnectionService.getFileBackend().getJingleFile(message);
 			content.setFileOffer(this.file);
 			this.transportId = this.mJingleConnectionManager.nextRandomId();
-			content.setCandidates(this.transportId,getCandidatesAsElements());
+			content.socks5transport().setChildren(getCandidatesAsElements());
 			packet.setContent(content);
 			this.sendJinglePacket(packet);
 			this.status = STATUS_INITIATED;
@@ -212,6 +246,7 @@ public class JingleConnection {
 				final JinglePacket packet = bootstrapPacket("session-accept");
 				final Content content = new Content();
 				content.setFileOffer(fileOffer);
+				content.setTransportId(transportId);
 				if ((success)&&(!equalCandidateExists(candidate))) {
 					final SocksConnection socksConnection = new SocksConnection(JingleConnection.this, candidate);
 					connections.put(candidate.getCid(), socksConnection);
@@ -220,7 +255,7 @@ public class JingleConnection {
 						@Override
 						public void failed() {
 							Log.d("xmppService","connection to our own primary candidate failed");
-							content.setCandidates(transportId, getCandidatesAsElements());
+							content.socks5transport().setChildren(getCandidatesAsElements());
 							packet.setContent(content);
 							sendJinglePacket(packet);
 						}
@@ -229,14 +264,14 @@ public class JingleConnection {
 						public void established() {
 							Log.d("xmppService","connected to primary candidate");
 							mergeCandidate(candidate);
-							content.setCandidates(transportId, getCandidatesAsElements());
+							content.socks5transport().setChildren(getCandidatesAsElements());
 							packet.setContent(content);
 							sendJinglePacket(packet);
 						}
 					});
 				} else {
 					Log.d("xmppService","did not find a primary candidate for ourself");
-					content.setCandidates(transportId, getCandidatesAsElements());
+					content.socks5transport().setChildren(getCandidatesAsElements());
 					packet.setContent(content);
 					sendJinglePacket(packet);
 				}
@@ -256,13 +291,13 @@ public class JingleConnection {
 	}
 	
 	private void sendJinglePacket(JinglePacket packet) {
-		Log.d("xmppService",packet.toPrettyString());
+		//Log.d("xmppService",packet.toString());
 		account.getXmppConnection().sendIqPacket(packet,responseListener);
 	}
 	
 	private void accept(JinglePacket packet) {
 		Content content = packet.getJingleContent();
-		mergeCandidates(JingleCandidate.parse(content.getCanditates()));
+		mergeCandidates(JingleCandidate.parse(content.socks5transport().getChildren()));
 		this.status = STATUS_ACCEPTED;
 		this.connectNextCandidate();
 		IqPacket response = packet.generateRespone(IqPacket.TYPE_RESULT);
@@ -271,8 +306,19 @@ public class JingleConnection {
 
 	private void transportInfo(JinglePacket packet) {
 		Content content = packet.getJingleContent();
-		String cid = content.getUsedCandidate();
-		IqPacket response = packet.generateRespone(IqPacket.TYPE_RESULT);
+		if (content.hasSocks5Transport()) {
+			if (content.socks5transport().hasChild("activated")) {
+				onProxyActivated.success();
+			} else if (content.socks5transport().hasChild("activated")) {
+				onProxyActivated.failed();
+			} else if (content.socks5transport().hasChild("candidate-error")) {
+				Log.d("xmppService","received candidate error");
+				this.receivedCandidate = true;
+				if (status == STATUS_ACCEPTED) {
+					this.connect();
+				}
+			} else if (content.socks5transport().hasChild("candidate-used")){
+				String cid = content.socks5transport().findChild("candidate-used").getAttribute("cid");
 				if (cid!=null) {
 					Log.d("xmppService","candidate used by counterpart:"+cid);
 					JingleCandidate candidate = getCandidate(cid);
@@ -283,18 +329,21 @@ public class JingleConnection {
 					} else {
 						Log.d("xmppService","ignoring because file is already in transmission or we havent sent our candidate yet");
 					}
-		} else if (content.hasCandidateError()) {
-			Log.d("xmppService","received candidate error");
-			this.receivedCandidate = true;
-			if (status == STATUS_ACCEPTED) {
-				this.connect();
+				} else {
+					Log.d("xmppService","couldn't read used candidate");
+				}
+			} else {
+				Log.d("xmppService","empty transport");
 			}
 		}
+		
+		IqPacket response = packet.generateRespone(IqPacket.TYPE_RESULT);
 		account.getXmppConnection().sendIqPacket(response, null);
 	}
 
 	private void connect() {
 		final SocksConnection connection = chooseConnection();
+		this.transport = connection;
 		if (connection==null) {
 			Log.d("xmppService","could not find suitable candidate");
 			this.disconnect();
@@ -302,18 +351,8 @@ public class JingleConnection {
 			this.mXmppConnectionService.markMessage(this.message, Message.STATUS_SEND_FAILED);
 		} else {
 			this.status = STATUS_TRANSMITTING;
-			final OnFileTransmitted callback = new OnFileTransmitted() {
-				
-				@Override
-				public void onFileTransmitted(JingleFile file) {
-					if (responder.equals(account.getFullJid())) {
-						sendSuccess();
-						mXmppConnectionService.markMessage(message, Message.STATUS_RECIEVED);
-					}
-					Log.d("xmppService","sucessfully transmitted file. sha1:"+file.getSha1Sum());
-				}
-			};
-			if (connection.isProxy()&&(connection.getCandidate().isOurs())) {
+			if (connection.isProxy()) {
+				if (connection.getCandidate().isOurs()) {
 					Log.d("xmppService","candidate "+connection.getCandidate().getCid()+" was our proxy and needs activation");
 					IqPacket activation = new IqPacket(IqPacket.TYPE_SET);
 					activation.setTo(connection.getCandidate().getJid());
@@ -323,23 +362,22 @@ public class JingleConnection {
 						
 						@Override
 						public void onIqPacketReceived(Account account, IqPacket packet) {
-						Log.d("xmppService","activation result: "+packet.toString());
-						if (initiator.equals(account.getFullJid())) {
-							Log.d("xmppService","we were initiating. sending file");
-							connection.send(file,callback);
+							if (packet.getType()==IqPacket.TYPE_ERROR) {
+								onProxyActivated.failed();
 							} else {
-							connection.receive(file,callback);
-							Log.d("xmppService","we were responding. receiving file");
+								onProxyActivated.success();
+								sendProxyActivated(connection.getCandidate().getCid());
 							}
 						}
 					});
+				}
 			} else {
 				if (initiator.equals(account.getFullJid())) {
 					Log.d("xmppService","we were initiating. sending file");
-					connection.send(file,callback);
+					connection.send(file,onFileTransmitted);
 				} else {
 					Log.d("xmppService","we were responding. receiving file");
-					connection.receive(file,callback);
+					connection.receive(file,onFileTransmitted);
 				}
 			}
 		}
@@ -439,13 +477,26 @@ public class JingleConnection {
 	    }
 	}
 	
+	private void sendProxyActivated(String cid) {
+		JinglePacket packet = bootstrapPacket("transport-info");
+		Content content = new Content();
+		//TODO: put these into actual variables
+		content.setAttribute("creator", "initiator");
+		content.setAttribute("name", "a-file-offer");
+		content.setTransportId(this.transportId);
+		content.socks5transport().addChild("activated").setAttribute("cid", cid);
+		packet.setContent(content);
+		this.sendJinglePacket(packet);
+	}
+	
 	private void sendCandidateUsed(final String cid) {
 		JinglePacket packet = bootstrapPacket("transport-info");
 		Content content = new Content();
 		//TODO: put these into actual variables
 		content.setAttribute("creator", "initiator");
 		content.setAttribute("name", "a-file-offer");
-		content.setUsedCandidate(this.transportId, cid);
+		content.setTransportId(this.transportId);
+		content.setUsedCandidate(cid);
 		packet.setContent(content);
 		this.sendJinglePacket(packet);
 		this.sentCandidate = true;
@@ -460,7 +511,8 @@ public class JingleConnection {
 		//TODO: put these into actual variables
 		content.setAttribute("creator", "initiator");
 		content.setAttribute("name", "a-file-offer");
-		content.setCandidateError(this.transportId);
+		content.setTransportId(this.transportId);
+		content.setCandidateError();
 		packet.setContent(content);
 		this.sendJinglePacket(packet);
 		this.sentCandidate = true;
@@ -513,4 +565,9 @@ public class JingleConnection {
 		}
 		return null;
 	}
+	
+	interface OnProxyActivated {
+		public void success();
+		public void failed();
+	}
 }

src/eu/siacs/conversations/xmpp/jingle/JingleTransport.java

@@ -0,0 +1,6 @@
+package eu.siacs.conversations.xmpp.jingle;
+
+public abstract class JingleTransport {
+	public abstract void receive(final JingleFile file, final OnFileTransmitted callback);
+	public abstract void send(final JingleFile file, final OnFileTransmitted callback);
+}

src/eu/siacs/conversations/xmpp/jingle/SocksConnection.java

@@ -18,7 +18,7 @@ import eu.siacs.conversations.xml.Element;
 import android.util.Log;
 import android.widget.Button;
 
-public class SocksConnection {
+public class SocksConnection extends JingleTransport {
 	private JingleCandidate candidate;
 	private String destination;
 	private OutputStream outputStream;

src/eu/siacs/conversations/xmpp/jingle/stanzas/Content.java

@@ -1,12 +1,12 @@
 package eu.siacs.conversations.xmpp.jingle.stanzas;
 
-import java.util.ArrayList;
-import java.util.List;
-
 import eu.siacs.conversations.xml.Element;
 import eu.siacs.conversations.xmpp.jingle.JingleFile;
 
 public class Content extends Element {
+	
+	private String transportId;
+	
 	private Content(String name) {
 		super(name);
 	}
@@ -15,6 +15,10 @@ public class Content extends Element {
 		super("content");
 	}
 
+	public void setTransportId(String sid) {
+		this.transportId = sid;
+	}
+	
 	public void setFileOffer(JingleFile actualFile) {
 		Element description = this.addChild("description", "urn:xmpp:jingle:apps:file-transfer:3");
 		Element offer = description.addChild("offer");
@@ -35,75 +39,6 @@ public class Content extends Element {
 		return offer.findChild("file");
 	}
 	
-	public void setCandidates(String transportId, List<Element> canditates) {
-		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		if (transport==null) {
-			transport = this.addChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		}
-		transport.setAttribute("sid", transportId);
-		transport.clearChildren();
-		for(Element canditate : canditates) {
-			transport.addChild(canditate);
-		}
-	}
-	
-	public List<Element> getCanditates() {
-		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		if (transport==null) {
-			return new ArrayList<Element>();
-		} else {
-			return transport.getChildren();
-		}
-	}
-	
-	public String getTransportId() {
-		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		if (transport==null) {
-			return null;
-		}
-		return transport.getAttribute("sid");
-	}
-	
-	public String getUsedCandidate() {
-		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		if (transport==null) {
-			return null;
-		}
-		Element usedCandidate = transport.findChild("candidate-used");
-		if (usedCandidate==null) {
-			return null;
-		} else {
-			return usedCandidate.getAttribute("cid");
-		}
-	}
-	
-	public boolean hasCandidateError() {
-		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		if (transport==null) {
-			return false;
-		}
-		return transport.hasChild("candidate-error");
-	}
-	
-	public void setUsedCandidate(String transportId, String cid) {
-		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		if (transport==null) {
-			transport = this.addChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		}
-		transport.setAttribute("sid", transportId);
-		transport.clearChildren();
-		Element usedCandidate = transport.addChild("candidate-used");
-		usedCandidate.setAttribute("cid",cid);
-	}
-
-	public void addCandidate(Element candidate) {
-		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		if (transport==null) {
-			transport = this.addChild("transport", "urn:xmpp:jingle:transports:s5b:1");
-		}
-		transport.addChild(candidate);
-	}
-
 	public void setFileOffer(Element fileOffer) {
 		Element description = this.findChild("description", "urn:xmpp:jingle:apps:file-transfer:3");
 		if (description==null) {
@@ -112,13 +47,49 @@ public class Content extends Element {
 		description.addChild(fileOffer);
 	}
 	
-	public void setCandidateError(String transportId) {
+	public String getTransportId() {
+		if (hasSocks5Transport()) {
+			this.transportId = socks5transport().getAttribute("sid");
+		} else if (hasIbbTransport()) {
+			this.transportId = ibbTransport().getAttribute("sid");
+		}
+		return this.transportId;
+	}
+	
+	public void setUsedCandidate(String cid) {
+		socks5transport().clearChildren();
+		Element usedCandidate = socks5transport().addChild("candidate-used");
+		usedCandidate.setAttribute("cid",cid);
+	}
+
+	public void setCandidateError() {
+		socks5transport().clearChildren();
+		socks5transport().addChild("candidate-error");
+	}
+	
+	public Element socks5transport() {
 		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:s5b:1");
 		if (transport==null) {
 			transport = this.addChild("transport", "urn:xmpp:jingle:transports:s5b:1");
+			transport.setAttribute("sid", this.transportId);
 		}
-		transport.setAttribute("sid", transportId);
-		transport.clearChildren();
-		transport.addChild("candidate-error");
+		return transport;
+	}
+	
+	public Element ibbTransport() {
+		Element transport = this.findChild("transport", "urn:xmpp:jingle:transports:ibb:1");
+		if (transport==null) {
+			transport = this.addChild("transport", "urn:xmpp:jingle:transports:ibb:1");
+			transport.setAttribute("sid", this.transportId);
+		}
+		return transport;
+	}
+	
+	public boolean hasSocks5Transport() {
+		return this.hasChild("transport", "urn:xmpp:jingle:transports:s5b:1");
+	}
+	
+	public boolean hasIbbTransport() {
+		return this.hasChild("transport","urn:xmpp:jingle:transports:ibb:1");
 	}
 }

src/eu/siacs/conversations/xmpp/jingle/stanzas/JinglePacket.java

@@ -92,22 +92,4 @@ public class JinglePacket extends IqPacket {
 	public boolean isAction(String action) {
 		return action.equalsIgnoreCase(this.getAction());
 	}
-	
-	public String toPrettyString() {
-		StringBuilder output = new StringBuilder();
-		output.append("["+getAction()+ " to:"+getTo());
-		if (this.content!=null) {
-			if (this.content.getUsedCandidate()!=null) {
-				output.append(" [used-candidate="+this.content.getUsedCandidate()+"]");
-			} else if (this.content.hasCandidateError()) {
-				output.append(" [candidate-error]");
-			} else {
-				for(Element c : this.content.getCanditates()) {
-					output.append(" ["+c.getAttribute("host")+":"+c.getAttribute("port")+"]");
-				}
-			}
-		}
-		output.append("]");
-		return output.toString();
-	}
 }