internal static void Shutdown(RUDPSocket rudp)
{
if (rudp._status == RUDPSocketStatus.Accepting)
{
rudp.Reset(RUDPSocketStatus.Closed);
return;
}
if (rudp._status == RUDPSocketStatus.Closed ||
rudp._isShutingDown)
return;
if (rudp._status == RUDPSocketStatus.Closing ||
rudp._status == RUDPSocketStatus.ClosingACKed)
return;
if (rudp._status == RUDPSocketStatus.Connecting)
{
rudp.Reset(RUDPSocketStatus.Closed);
return;
}
//---- Send the tear down message
//-- Update the status
rudp._isShutingDown = true;
rudp._status = RUDPSocketStatus.Closing;
//-- Wait for sending
while (!rudp._controlWindow.CanSend(0))
{
if (rudp._status != RUDPSocketStatus.Closing)
return;
Thread.Sleep(100);
}
//-- Send the tear down message
PushPacketToSend(rudp, true, RUDPPacketChannel.TearDown, null, 0, 0);
//---- Currently closing the connection, wait for the end of the operation
long startTime = HiResTimer.MicroSeconds;
//-- Wait until closed
// Wait until "ClosingACKed"
// Wait until we have receive the "TearDown" message too and send the ACK
// Wait until "Time out"
while (rudp._status == RUDPSocketStatus.Closing &&
rudp._outgoingPackets.Count > 0 &&
(HiResTimer.MicroSeconds - startTime) < rudp._sto)
{
Thread.Sleep(100);
}
//---- Set the status as closed
rudp.Reset(RUDPSocketStatus.Closed);
//---- Notify
rudp._physical.OnDisconnected(rudp, RUDPSocketError.Shutdown);
}
internal static RUDPSocketError BeginConnect(RUDPSocket rudp, int timeOut)
{
Trace("Connecting to :" + rudp._remoteEndPoint);
if (rudp._status == RUDPSocketStatus.Connected)
return RUDPSocketError.IsConnected;
if (rudp._status == RUDPSocketStatus.Connecting)
return RUDPSocketError.AlreadyInProgress;
//---- Set the status
rudp.Reset(RUDPSocketStatus.Connecting);
//---- Register for the stack
RUDPStack.RegisterRUDPSocket(rudp);
//---- Send a ping
if (rudp.IsRendezVousMode)
PushPacketToSend(rudp, true, RUDPPacketChannel.PingRendezVous, null, 0, 0);
else
PushPacketToSend(rudp, true, RUDPPacketChannel.Ping, null, 0, 0);
return RUDPSocketError.Success;
}
/// <summary>
/// Close the socket. Send the tear down message.
/// </summary>
internal static void Close(RUDPSocket rudp)
{
if (rudp._status == RUDPSocketStatus.Closed)
return;
if (rudp._status == RUDPSocketStatus.Accepting)
{
rudp.Reset(RUDPSocketStatus.Closed);
return;
}
AsyncShutdown(rudp);
}
internal static void OnDisconnected(RUDPSocket rudp, DisconnectionReason reason)
{
if (rudp._status == RUDPSocketStatus.Closed)
return;
//---- Reset
rudp._outgoingPacketsLock.EnterWriteLock();
rudp._outgoingPackets.Clear();
rudp._outgoingPacketsLock.ExitWriteLock();
rudp.Reset(RUDPSocketStatus.Closed);
//---- Notify
if (reason != DisconnectionReason.ConnectionClosed)
{
RUDPSocketError error = RUDPSocketError.ConnectionReset;
if (reason == DisconnectionReason.SocketError)
error = RUDPSocketError.SocketError;
if (reason == DisconnectionReason.TimeOut)
error = RUDPSocketError.ConnectionReset;
rudp._physical.OnDisconnected(rudp, error);
}
}