/// <summary>
/// TODO: Documentation StartTurnPeer
/// </summary>
/// <param name="sid"></param>
private void StartTurnPeer(String sid)
{
JingleSession jingleSession = this.JingleManager.FindSession(sid);
if (jingleSession != null &&
jingleSession.Remote.Action == ActionType.session_initiate)
{
JingleContent jingleContent = jingleSession.Remote.GetContent(0);
JingleIce jingleIce = jingleContent.GetElement <JingleIce>(0);
foreach (JingleIceCandidate candidate in jingleIce.GetCandidates())
{
if (candidate.Type == IceCandidateType.relay)
{
if (this.OnTurnStart != null)
{
this.OnTurnStart(this, candidate.EndPoint, sid);
}
if (this.OnConnectionTryEnded != null)
{
this.OnConnectionTryEnded(this, sid);
}
this.CancelStartingSession();
break;
}
}
}
}
/// <summary>
/// TODO: Documentation CheckConnectivity
/// </summary>
/// <param name="sid"></param>
private void CheckConnectivity(String sid)
{
if (this.turnSessions.ContainsKey(sid))
{
this.holePuncher = new HolePuncher(this.turnSessions[sid].TurnManager.HostEP, sid);
JingleSession jingleSession = this.JingleManager.FindSession(sid);
JingleContent jingleContent = jingleSession.Remote.GetContent(0);
JingleIce jingleIce = jingleContent.GetElement <JingleIce>(0);
foreach (JingleIceCandidate remoteCandidate in jingleIce.GetCandidates())
{
switch (remoteCandidate.Type)
{
case IceCandidateType.host:
case IceCandidateType.prflx:
case IceCandidateType.srflx:
foreach (JingleIceCandidate localCandidate in this.localCandidates[sid])
{
if (localCandidate.Type == remoteCandidate.Type)
{
this.holePuncher.AddEP(remoteCandidate.Priority, remoteCandidate.EndPoint);
break;
}
}
break;
case IceCandidateType.relay:
if (this.TurnSupported &&
jingleSession.Remote.Action == ActionType.session_accept)
{
this.turnSessions[sid].TurnManager.CreatePermission(new XorMappedAddress(remoteCandidate.RelatedEndPoint),
this.turnSessions[sid].TurnAllocation);
}
break;
}
}
if (!this.holePuncher.CanStart && this.TurnSupported)
{
this.StartTurnPeer(sid);
}
else
{
this.holePuncher.StartTcpPunch(this.HolePunchSuccess, this.HolePunchFailure);
}
}
}
/// <summary>
/// TODO: Documentation HolePunchSuccess
/// </summary>
/// <param name="sender"></param>
/// <param name="connectedSocket"></param>
/// <param name="punchData"></param>
private void HolePunchSuccess(object sender, Socket connectedSocket, Object punchData)
{
JingleSession jingleSession = this.JingleManager.FindSession(punchData as String);
if (this.OnConnectionTryEnded != null)
{
this.OnConnectionTryEnded(this, punchData as String);
}
if (this.OnHolePunchSucceed != null)
{
this.OnHolePunchSucceed(this, connectedSocket, jingleSession.Remote);
}
this.DestroyTurnSession(punchData as String);
this.CancelStartingSession();
}
/// <summary>
/// Analyses an IQ paquet and chooses to handle it or not
/// </summary>
/// <param name="sender"></param>
/// <param name="iq"></param>
private void GotIQ(object sender, IQ iq)
{
Jingle jingle = iq.Query as Jingle;
if (jingle != null)
{
if (jingle.Action == ActionType.session_terminate)
{
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
if (this.OnReceivedSessionTerminate != null)
{
this.OnReceivedSessionTerminate(this, iq);
}
if (this.Sessions.ContainsKey(jingle.Sid))
{
this.Sessions.Remove(jingle.Sid);
}
iq.Handled = true;
}
else
{
if (!this.AllowSessionInitiateFrom(iq.From))
{
this.SessionTerminate(iq.From, jingle.Sid, ReasonType.security_error);
iq.Handled = true;
}
else
{
switch (jingle.Action)
{
case ActionType.session_initiate:
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
if (!this.Sessions.ContainsKey(jingle.Sid))
{
JingleSession jingleSession = new JingleSession();
jingleSession.SID = jingle.Sid;
jingleSession.Remote = jingle;
this.Sessions.Add(jingle.Sid, jingleSession);
}
if (this.OnReceivedSessionInitiate != null)
{
this.OnReceivedSessionInitiate(this, iq);
}
if (!iq.Handled)
{
this.SessionTerminate(iq.From, jingle.Sid, ReasonType.decline);
iq.Handled = true;
}
break;
case ActionType.session_accept:
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
if (!this.Sessions.ContainsKey(jingle.Sid))
{
JingleSession jingleSession = new JingleSession();
jingleSession.SID = jingle.Sid;
jingleSession.Remote = jingle;
this.Sessions.Add(jingle.Sid, jingleSession);
}
if (this.OnReceivedSessionAccept != null)
{
this.OnReceivedSessionAccept(this, iq);
}
if (!iq.Handled)
{
this.SessionTerminate(iq.From, jingle.Sid, ReasonType.cancel);
iq.Handled = true;
}
break;
case ActionType.session_info:
if (this.Sessions.ContainsKey(jingle.Sid))
{
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
}
else
{
this.Stream.Write(new UnknownSession(this.Stream.Document));
}
if (this.OnReceivedSessionInfo != null)
{
this.OnReceivedSessionInfo(this, iq);
}
break;
case ActionType.transport_info:
if (this.Sessions.ContainsKey(jingle.Sid))
{
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
}
else
{
this.Stream.Write(new UnknownSession(this.Stream.Document));
}
if (this.OnReceivedTransportInfo != null)
{
this.OnReceivedTransportInfo(this, iq);
}
break;
}
}
}
}
}
/// <summary>
/// Analyses an IQ paquet and chooses to handle it or not
/// </summary>
/// <param name="sender"></param>
/// <param name="iq"></param>
private void GotIQ(object sender, IQ iq)
{
Jingle jingle = iq.Query as Jingle;
if (jingle != null)
{
if (jingle.Action == ActionType.session_terminate)
{
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
if (this.OnReceivedSessionTerminate != null)
this.OnReceivedSessionTerminate(this, iq);
if (this.Sessions.ContainsKey(jingle.Sid))
this.Sessions.Remove(jingle.Sid);
iq.Handled = true;
}
else
{
if (!this.AllowSessionInitiateFrom(iq.From))
{
this.SessionTerminate(iq.From, jingle.Sid, ReasonType.security_error);
iq.Handled = true;
}
else
{
switch (jingle.Action)
{
case ActionType.session_initiate:
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
if (!this.Sessions.ContainsKey(jingle.Sid))
{
JingleSession jingleSession = new JingleSession();
jingleSession.SID = jingle.Sid;
jingleSession.Remote = jingle;
this.Sessions.Add(jingle.Sid, jingleSession);
}
if (this.OnReceivedSessionInitiate != null)
this.OnReceivedSessionInitiate(this, iq);
if (!iq.Handled)
{
this.SessionTerminate(iq.From, jingle.Sid, ReasonType.decline);
iq.Handled = true;
}
break;
case ActionType.session_accept:
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
if (!this.Sessions.ContainsKey(jingle.Sid))
{
JingleSession jingleSession = new JingleSession();
jingleSession.SID = jingle.Sid;
jingleSession.Remote = jingle;
this.Sessions.Add(jingle.Sid, jingleSession);
}
if (this.OnReceivedSessionAccept != null)
this.OnReceivedSessionAccept(this, iq);
if (!iq.Handled)
{
this.SessionTerminate(iq.From, jingle.Sid, ReasonType.cancel);
iq.Handled = true;
}
break;
case ActionType.session_info:
if (this.Sessions.ContainsKey(jingle.Sid))
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
else
this.Stream.Write(new UnknownSession(this.Stream.Document));
if (this.OnReceivedSessionInfo != null)
this.OnReceivedSessionInfo(this, iq);
break;
case ActionType.transport_info:
if (this.Sessions.ContainsKey(jingle.Sid))
this.Stream.Write(iq.GetAcknowledge(this.Stream.Document));
else
this.Stream.Write(new UnknownSession(this.Stream.Document));
if (this.OnReceivedTransportInfo != null)
this.OnReceivedTransportInfo(this, iq);
break;
}
}
}
}
}
