public void Start(XmppConnection connection)
{
var auth = new SASLAuth();
auth.SetAttributeValue("mechanism", SASLMethod);
auth.SetValue(Initiate());
connection.Send(auth);
var authResponse = connection.NextElement();
var nextResponse = string.Empty;
Task.Run(() =>
{
while ((nextResponse = NextChallenge(authResponse.Value)) != "")
{
if (nextResponse == "error")
{
OnAuthenticationFailed(connection);
return;
}
var response = new SASLResponse();
response.SetValue(nextResponse);
connection.Send(response);
authResponse = connection.NextElement();
}
OnAuthenticated(connection);
});
}
public override Task ConnectAsync(CancellationToken token)
{
return(Task.Run(async() =>
{
if (string.IsNullOrEmpty(websocketUri))
{
var lookup = new LookupClient();
var response = await lookup.QueryAsync("_xmppconnect." + Jid.Domain, QueryType.TXT);
if (response.Answers.TxtRecords().Any())
{
foreach (var srv in response.Answers.TxtRecords())
{
foreach (var addr in srv.Text)
{
if (addr.StartsWith("_xmpp-client-websocket"))
{
websocketUri = addr.Split('=')[1];
break;
}
}
}
}
}
if (string.IsNullOrEmpty(websocketUri))
{
OnConnectionFailed(new ConnFailedArgs
{
Message = "WebSocket URI is not resolved or set."
});
return;
}
_connection = new WebSocket(websocketUri, "xmpp", WebSocketVersion.Rfc6455);
_connection.Opened += (sender, args) =>
{
_currentState = XmppConnectionState.Connected;
RestartStream();
};
_connection.MessageReceived += (sender, args) =>
{
OnElement(new ElementArgs
{
IsInput = true,
Stanza = XElement.Parse(args.Message)
});
if (_currentState == XmppConnectionState.Connected)
{
ReadStreamStart(args.Message);
_currentState = XmppConnectionState.StreamInitiated;
}
else if (_currentState == XmppConnectionState.StreamAuthenticated)
{
ReadStreamStart(args.Message);
_currentState =
XmppConnectionState.StreamResourceBindingRequest;
}
else
{
var currentStanza = XElement.Parse(args.Message);
var error = Stanza.Parse <StreamError>(currentStanza);
if (error != null)
{
OnConnectionFailed(new ConnFailedArgs {
Message = error.Value
});
return;
}
switch (_currentState)
{
case XmppConnectionState.StreamInitiated:
var features = Stanza.Parse <Features>(currentStanza);
authenticator = SASLHandler.Create(features.SaslMechanisms,
Jid, Password);
if (authenticator == null)
{
OnConnectionFailed(new ConnFailedArgs
{
Message = "supported sasl mechanism not available"
});
return;
}
var auth = new SASLAuth();
auth.SetAttributeValue("mechanism", authenticator.SASLMethod);
var authInit = authenticator.Initiate();
if (!string.IsNullOrEmpty(authInit))
{
auth.SetValue(authInit);
}
Send(auth);
_currentState = XmppConnectionState.StreamAuthenticating;
break;
case XmppConnectionState.StreamAuthenticating:
switch (currentStanza.Name.LocalName)
{
case "success":
_currentState =
XmppConnectionState.StreamAuthenticated;
RestartStream();
break;
case "failure":
OnConnectionFailed(new ConnFailedArgs
{
Message = currentStanza.Value
});
_currentState = XmppConnectionState.Disconnected;
return;
case "challenge":
var response = new SASLResponse();
response.SetValue(
authenticator.NextChallenge(currentStanza.Value));
Send(response);
break;
}
break;
case XmppConnectionState.StreamResourceBindingRequest:
// todo: parse features of negotiated stream
//Stanza.Parse<Features>(currentStanza);
var bind = new Bind(Jid.Resource);
var iq = new XMPPIq(XMPPIq.IqTypes.set);
iq.Add(bind);
Send(iq);
_currentState =
XmppConnectionState.StreamResourceBindingResponse;
break;
case XmppConnectionState.StreamResourceBindingResponse:
var bindedJid =
currentStanza.Element(
XNamespace.Get(Namespaces.XmppBind) +
"bind");
if (bindedJid == null)
{
OnConnectionFailed(new ConnFailedArgs
{
Message = "bind failed"
});
_currentState = XmppConnectionState.Disconnected;
}
else
{
var sess =
new XElement(
XNamespace.Get(Namespaces.XmppSession) +
"session");
var sessIq = new XMPPIq(XMPPIq.IqTypes.set);
sessIq.Add(sess);
Send(sessIq);
_currentState = XmppConnectionState.StreamSessionNoOp;
Jid =
new JID(
bindedJid.Element(
XNamespace.Get(Namespaces.XmppBind) + "jid")
.Value);
}
break;
case XmppConnectionState.StreamSessionNoOp:
OnSignedIn(new SignedInArgs {
Jid = Jid
});
_currentState = XmppConnectionState.StreamNegotiated;
break;
case XmppConnectionState.StreamNegotiated:
if (currentStanza.Name.LocalName.Equals("iq"))
{
OnIq(Stanza.Parse <XMPPIq>(currentStanza));
}
if (currentStanza.Name.LocalName.Equals("message"))
{
OnMessage(Stanza.Parse <XMPPMessage>(currentStanza));
}
if (currentStanza.Name.LocalName.Equals("presence"))
{
OnPresence(Stanza.Parse <XMPPPresence>(currentStanza));
}
break;
default:
throw new IOException("Invalid state");
}
}
};
_connection.Open();
}));
}
public XmppWebSocketConnection(JID jid, string password, string websocketUri)
: base(jid, password)
{
Capabilities = new CapabilitiesManager
{
Identity = new Identity
{
Category = "client",
IdentityType = "mobile",
IdentityName = "SharpXMPP"
},
Node = "http://bggg.net.ru/caps",
Features = new List <string>
{
Namespaces.DiscoInfo,
Namespaces.DiscoItems
}
};
IqTracker = new XMPP.Client.IqHandler(this)
{
ResponseHandlers = new Dictionary <string, ResponseHandler>(),
PayloadHandlers = new List <PayloadHandler>
{
new InfoHandler(Capabilities),
new ItemsHandler()
}
};
Iq += (sender, iq) => IqTracker.Handle(iq);
// ReSharper disable RedundantArgumentDefaultValue
_connection = new WebSocket(websocketUri, "xmpp", cookies: (List <KeyValuePair <string, string> >)null);
// ReSharper restore RedundantArgumentDefaultValue
_connection.Opened += (sender, args) =>
{
_currentState = XmppConnectionState.Connected;
RestartStream();
};
_connection.MessageReceived += (sender, args) =>
{
if (_currentState == XmppConnectionState.Connected)
{
ReadStreamStart(args.Message);
_currentState = XmppConnectionState.StreamInitiated;
}
else if (_currentState == XmppConnectionState.StreamAuthenticated)
{
ReadStreamStart(args.Message);
_currentState =
XmppConnectionState.StreamResourceBindingRequest;
}
else
{
var currentStanza = Stanza.Parse(args.Message);
OnElement(new ElementArgs
{
IsInput = false,
Stanza = currentStanza
});
var error = Stanza.Parse <StreamError>(currentStanza);
if (error != null)
{
OnConnectionFailed(new ConnFailedArgs {
Message = error.Value
});
return;
}
switch (_currentState)
{
case XmppConnectionState.StreamInitiated:
var features = Stanza.Parse <Features>(currentStanza);
authenticator = SASLHandler.Create(features.SaslMechanisms,
Jid, Password);
if (authenticator == null)
{
OnConnectionFailed(new ConnFailedArgs
{
Message =
"supported sasl mechanism not available"
});
return;
}
var auth = new SASLAuth();
auth.SetAttributeValue("mechanism", authenticator.SASLMethod);
var authInit = authenticator.Initiate();
if (!string.IsNullOrEmpty(authInit))
{
auth.SetValue(authInit);
}
Send(auth);
_currentState = XmppConnectionState.StreamAuthenticating;
break;
case XmppConnectionState.StreamAuthenticating:
switch (currentStanza.Name.LocalName)
{
case "success":
_currentState =
XmppConnectionState.StreamAuthenticated;
RestartStream();
break;
case "failure":
OnConnectionFailed(new ConnFailedArgs
{
Message =
currentStanza.Value
});
_currentState = XmppConnectionState.Disconnected;
return;
case "challenge":
var response = new SASLResponse();
response.SetValue(
authenticator.NextChallenge(currentStanza.Value));
Send(response);
break;
}
break;
case XmppConnectionState.StreamResourceBindingRequest:
// todo: parse features of negotiated stream
//Stanza.Parse<Features>(currentStanza);
var bind = new Bind(Jid.Resource);
var iq = new Iq(XMPP.Client.Elements.Iq.IqTypes.set);
iq.Add(bind);
Send(iq);
_currentState =
XmppConnectionState.StreamResourceBindingResponse;
break;
case XmppConnectionState.StreamResourceBindingResponse:
var bindedJid =
currentStanza.Element(
XNamespace.Get(Namespaces.XmppBind) +
"bind");
if (bindedJid == null)
{
OnConnectionFailed(new ConnFailedArgs
{
Message =
"bind failed"
});
_currentState = XmppConnectionState.Disconnected;
}
else
{
var sess =
new XElement(
XNamespace.Get(Namespaces.XmppSession) +
"session");
var sessIq = new Iq(XMPP.Client.Elements.Iq.IqTypes.set);
sessIq.Add(sess);
Send(sessIq);
_currentState = XmppConnectionState.StreamSessionNoOp;
Jid =
new JID(
bindedJid.Element(
XNamespace.Get(Namespaces.XmppBind) + "jid")
.Value);
}
break;
case XmppConnectionState.StreamSessionNoOp:
OnSignedIn(new SignedInArgs {
Jid = Jid
});
Roster.Query(this);
var initPresence = new Presence(Capabilities);
Send(initPresence);
_currentState = XmppConnectionState.StreamNegotiated;
break;
case XmppConnectionState.StreamNegotiated:
if (currentStanza.Name.LocalName.Equals("iq"))
{
OnIq(Stanza.Parse <Iq>(currentStanza));
}
if (currentStanza.Name.LocalName.Equals("message"))
{
OnMessage(Stanza.Parse <Message>(currentStanza));
}
break;
default:
throw new IOException("Invalid state");
}
}
};
}