iPhone Jabber/XMPP client... "TURN Connection failed" - ios

Question

I am trying to build a simple Jabber client.
I have downloaded this sample project, which uses xmpp-framework https://github.com/funkyboy/Building-a-Jabber-client-for-iOS
I am running it in the iOS Simulator. I have installed Openfire locally so that I can interact with a user logged into iChat.
Unfortunately the app only receives messages. It fails in sending messages giving the error "TURN Connection failed!".
This is the code attempting to connect:
- (void)viewDidLoad
{
[super viewDidLoad];
self.tView.delegate = self;
self.tView.dataSource = self;
[self.tView setSeparatorStyle:UITableViewCellSeparatorStyleNone];
messages = [[NSMutableArray alloc ] init];
JabberClientAppDelegate *del = [self appDelegate];
del._messageDelegate = self;
[self.messageField becomeFirstResponder];
XMPPJID *jid = [XMPPJID jidWithString:#"user#server.local"];
NSLog(#"Attempting TURN connection to %#", jid);
TURNSocket *turnSocket = [[TURNSocket alloc] initWithStream:[self xmppStream] toJID:jid];
[turnSockets addObject:turnSocket];
[turnSocket startWithDelegate:self delegateQueue:dispatch_get_main_queue()];
[turnSocket release];
}
And those are the methods called on success/failure:
- (void)turnSocket:(TURNSocket *)sender didSucceed:(GCDAsyncSocket *)socket
{
NSLog(#"TURN Connection succeeded!");
NSLog(#"You now have a socket that you can use to send/receive data to/from the other person.");
[turnSockets removeObject:sender];
}
- (void)turnSocketDidFail:(TURNSocket *)sender
{
NSLog(#"TURN Connection failed!");
[turnSockets removeObject:sender];
}
Can anyone please help?
Thank you.

Answer 1

There is no reason to use TURN for normal messaging. TURN is required for media streaming only. Just use XMPPFramework. There are some good getting-started guides.
Next, use code of this nature to create and send stanzas:
XMPPMessage *msg = [XMPPMessage message];
[msg addAttributeWithName:#"type" stringValue:#"chat"];
[msg addAttributeWithName:#"to" stringValue:#"foo#example.com"];
NSXMLElement *body = [NSXMLElement elementWithName:#"body" stringValue:#"Hello"];
[msg addChild:body];
[[self xmppStream] sendElement:msg];
Note that msg is just a subclass of NSXMLElement, so you can modify the XML at will to craft the protocol you're going to send.