File transfer using XMPP (Extension XEP-0065)

Question

Not sure why I am getting turn socket failed (turnSocketDidFail called). Anybody can help me in figure out this? Please point me what am I doing wrong here. I know there are lots of question like this and I have already checked all of these and from that I have taken little help already. One of client is Spark and other is simulator.

Settings:
Server: testXyz
Senderjid: user1@testXyz
Receiverjid: user2@testXyz

XMPPJID *jid = [XMPPJID jidWithString:Receiverjid];
[TURNSocket setProxyCandidates:[NSArray arrayWithObjects:Receiverjid, nil]];
TURNSocket *turnSocket = [[TURNSocket alloc] initWithStream:self.chatManager.xmppStream toJID:jid];
[turnSocket startWithDelegate:self delegateQueue:dispatch_get_main_queue()];

Console logs

SEND: 
<iq type="get" to="Receiverjid" id="C15C428D-6007-4B4E-96D5-65F7A307121A"><query xmlns="http://jabber.org/protocol/disco#items"/></iq>

RECV:
<iq xmlns="jabber:client" type="result" id="C15C428D-6007-4B4E-96D5-65F7A307121A" from="Receiverjid" to="Senderjid/4840c8ae">
<query xmlns="http://jabber.org/protocol/disco#items">
<item jid="Receiverjid" node="http://jabber.org/protocol/tune"/>
<item jid="Receiverjid/Spark 2.6.3"/>
</query>
</iq>

SEND: 
<iq type="get" to="Receiverjid" id="A4D8B427-B323-4152-8B19-7B55164E9C4B">
<query xmlns="http://jabber.org/protocol/disco#info"/>
</iq>

RECV: 
<iq xmlns="jabber:client" type="result" id="A4D8B427-B323-4152-8B19-7B55164E9C4B" from="Receiverjid" to="Senderjid/4840c8ae">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="account" type="registered"/>
<identity category="pubsub" type="pep"/>
<feature var="http://jabber.org/protocol/disco#info"/>
</query>
</iq>

SEND: 
<iq type="get" to="Receiverjid/Spark 2.6.3" id="2DE55487-9203-4266-A559-1B1D3DC5FBF4">
<query xmlns="http://jabber.org/protocol/disco#info"/>
</iq>

RECV:
<iq xmlns="jabber:client" id="2DE55487-9203-4266-A559-1B1D3DC5FBF4" to="Senderjid/4840c8ae" type="result" from="Receiverjid/Spark 2.6.3">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="client" name="Smack" type="pc"/>
<feature var="http://www.xmpp.org/extensions/xep-0166.html#ns"/>
<feature var="urn:xmpp:tmp:jingle"/>
</query>
</iq>

RECV:
<iq xmlns="jabber:client" id="2DE55487-9203-4266-A559-1B1D3DC5FBF4" to="Senderjid/4840c8ae" type="result" from="Receiverjid/Spark 2.6.3">
<query xmlns="http://jabber.org/protocol/disco#info">
<identity category="client" name="Smack" type="pc"/>
<feature var="http://jabber.org/protocol/xhtml-im"/>
<feature var="http://jabber.org/protocol/muc"/>
<feature var="http://jabber.org/protocol/bytestreams"/>
<feature var="http://jabber.org/protocol/commands"/>\
<feature var="http://jabber.org/protocol/si/profile/file-transfer"/>
<feature var="http://jabber.org/protocol/si"/>
<feature var="http://jabber.org/protocol/ibb"/>
</query> 
</iq>

Update

If I am changing:

[TURNSocket setProxyCandidates:[NSArray arrayWithObjects:Receiverjid, nil]];

to:

[TURNSocket setProxyCandidates:[NSArray arrayWithObjects:Server, nil]];

It gives me:

<error code="503" type="cancel"><service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/></error>.

As suggested in one of question on stack to resolve this error I have replaced Receiverjid: 'user2@testXyz' by 'user2@testXyz/spark' but am still getting same error.

Answer 1

[TURNSocket setProxyCandidates:[NSArray arrayWithObjects:Receiverjid, nil]]; In this replace "Receiverjid" with hostname, eg:sa.com,

Answer 2

iducool ,you can find full jid with resource in following method of AppDelegate.

- (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence
{
    DDLogVerbose(@"%@: %@ - %@", THIS_FILE, THIS_METHOD, [presence fromStr]);

  //  NSString *presenceType = [presence type]; // online/offline
    NSString *myUsername = [[sender myJID] user];
    NSString *presenceFromUser = [[presence from] user];

    NSLog(@" Printing full jid of user %@",[[sender myJID] full]);
    NSLog(@"Printing full jid of user %@",[[sender myJID] resource]);
    NSLog(@"From user %@",[[presence from] full]);
    senderFullID=[[presence from] full];
}

Answer 3

Don't know what to set in setProxyCandidates, but I am setting my Server name.

<error code="503" type="cancel"><service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/></error>

Solution: Pass full jabber id:username@domain/resource. In my case I have changed 'user2@testXyz/spark; to 'user2@testXyz/Spark 2.6.3'

I don't know how to find these resource parameters. I have checked XMPPJID class's resource parameter but it is nil. I found these parameters by seeing some console logs. If anybody know how to find this from any xmpp class then please let me know.