private void Dtls_OnIncomingHandshakeStarted(object Sender, RemoteEndpointEventArgs e)
{
IPEndPoint EP = (IPEndPoint)e.RemoteEndpoint;
if (!this.dtlsStates.TryGetValue(EP, out DtlsOverUdpState State))
{
State = new DtlsOverUdpState()
{
RemoteEndpoint = EP,
Queue = new LinkedList <Tuple <byte[], UdpTransmissionEventHandler, object> >(),
CurrentState = DtlsState.Handshake
};
this.dtlsStates.Add(EP, State);
}
}
private void Dtls_OnHandshakeSuccessful(object sender, RemoteEndpointEventArgs e)
{
IPEndPoint EP = (IPEndPoint)e.RemoteEndpoint;
if (this.dtlsStates.TryGetValue(EP, out DtlsOverUdpState State))
{
State.Done(this, true);
}
else
{
State = new DtlsOverUdpState()
{
RemoteEndpoint = EP,
Queue = new LinkedList <Tuple <byte[], UdpTransmissionEventHandler, object> >(),
CurrentState = DtlsState.SessionEstablished
};
this.dtlsStates.Add(EP, State);
}
}
/// <summary>
/// Sends a packet to a remote endpoint.
/// </summary>
/// <param name="Packet">Packet to send.</param>
/// <param name="RemoteEndpoint">Remote endpoint.</param>
/// <param name="Credentials">Optional credentials.</param>
/// <param name="Callback">Method to call when operation concludes.</param>
/// <param name="State">State object to pass on to callback method.</param>
public void Send(byte[] Packet, IPEndPoint RemoteEndpoint, IDtlsCredentials Credentials,
UdpTransmissionEventHandler Callback, object State)
{
if (this.dtlsStates.TryGetValue(RemoteEndpoint, out DtlsOverUdpState DtlsState))
{
switch (DtlsState.CurrentState)
{
case Security.DTLS.DtlsState.SessionEstablished:
this.dtls.SendApplicationData(Packet, RemoteEndpoint);
break;
case Security.DTLS.DtlsState.Handshake:
DtlsState.AddToQueue(Packet, Callback, State);
break;
case Security.DTLS.DtlsState.Closed:
case Security.DTLS.DtlsState.Failed:
case Security.DTLS.DtlsState.Created:
default:
DtlsState.AddToQueue(Packet, Callback, State);
this.dtls.StartHandshake(RemoteEndpoint, Credentials);
break;
}
}
else
{
DtlsState = new DtlsOverUdpState()
{
RemoteEndpoint = RemoteEndpoint,
Queue = new LinkedList <Tuple <byte[], UdpTransmissionEventHandler, object> >(),
CurrentState = Security.DTLS.DtlsState.Handshake
};
DtlsState.AddToQueue(Packet, Callback, State);
this.dtlsStates.Add(RemoteEndpoint, DtlsState);
this.dtls.StartHandshake(RemoteEndpoint, Credentials);
}
}