private SocketHandler CreateSocketHandler(
Socket socket, SocketCache socketCache, String machinePortAndSid)
{
Stream netStream = new SocketStream(socket);
// Check if authentication is requested
if(_channel.IsSecured)
{
throw new NotSupportedException();
}
return new TcpClientSocketHandler(socket, machinePortAndSid, netStream, this);
} // CreateSocketHandler
} // AddHookChannelUri
//
// end of IChannelReceiverHook implementation
//
// Thread for listening
void Listen()
{
bool bOkToListen = false;
try
{
_tcpListener.Start(_bExclusiveAddressUse);
bOkToListen = true;
}
catch (Exception e)
{
_startListeningException = e;
}
_waitForStartListening.Set(); // allow main thread to continue now that we have tried to start the socket
InternalRemotingServices.RemotingTrace( "Waiting to Accept the Socket on Port: " + _port);
//
// Wait for an incoming socket
//
Socket socket;
while (bOkToListen)
{
InternalRemotingServices.RemotingTrace("TCPChannel::Listen - tcpListen.Pending() == true");
try
{
socket = _tcpListener.AcceptSocket();
if (socket == null)
{
throw new RemotingException(
String.Format(
CultureInfo.CurrentCulture, CoreChannel.GetResourceString("Remoting_Socket_Accept"),
Marshal.GetLastWin32Error().ToString(CultureInfo.InvariantCulture)));
}
else
{
// disable nagle delay
socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, 1);
// Set keepalive flag, so that inactive sockets can be cleaned up
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, 1);
// set linger option
LingerOption lingerOption = new LingerOption(true, 3);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Linger, lingerOption);
Stream netStream = new SocketStream(socket);
HttpServerSocketHandler streamManager = null;
//Create the socket Handler
streamManager = new HttpServerSocketHandler(socket, CoreChannel.RequestQueue, netStream);
// @
streamManager.DataArrivedCallback = new WaitCallback(_transportSink.ServiceRequest);
streamManager.BeginReadMessage();
}
}
catch (Exception e)
{
if (!_bListening)
{
// We called Stop() on the tcp listener, so gracefully exit.
bOkToListen = false;
}
else
{
// we want the exception to show up as unhandled since this
// is an unexpected failure.
if (!(e is SocketException))
{
// <
}
}
}
} // while (bOkToListen)
}
private SocketHandler CreateSocketHandler(Socket socket, SocketCache socketCache, string machinePortAndSid)
{
Stream netStream = new SocketStream(socket);
if (this._channel.IsSecured)
{
netStream = this.CreateAuthenticatedStream(netStream, machinePortAndSid);
}
return new TcpClientSocketHandler(socket, machinePortAndSid, netStream, this);
}
// AcceptSocket method which will invoke the
// authorization callbacks
void AcceptSocketCallback(IAsyncResult ar)
{
Socket socket = null;
InternalRemotingServices.RemotingTrace("TCPChannel::Listen - tcpListen.Pending() == true");
TcpServerSocketHandler streamManager = null;
bool closeImmediately = true;
try
{
//
// Wait for an incoming socket
// if the listener is still active
if (_tcpListener.IsListening)
_tcpListener.BeginAcceptSocket(_acceptSocketCallback, null);
socket = _tcpListener.EndAcceptSocket(ar);
if (socket == null)
{
throw new RemotingException(
String.Format(
CultureInfo.CurrentCulture, CoreChannel.GetResourceString("Remoting_Socket_Accept"),
Marshal.GetLastWin32Error().ToString(CultureInfo.CurrentCulture)));
}
if (_authorizeRemotingConnection != null)
{
bool authorized = _authorizeRemotingConnection.IsConnectingEndPointAuthorized(socket.RemoteEndPoint);
if (!authorized)
throw new RemotingException(CoreChannel.GetResourceString(
"Remoting_Tcp_ServerAuthorizationEndpointFailed"));
}
// disable nagle delay
socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, 1);
// Set keepalive flag, so that inactive sockets can be cleaned up
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, 1);
// set linger option
LingerOption lingerOption = new LingerOption(true, 3);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Linger, lingerOption);
Stream netStream = new SocketStream(socket);
streamManager = new TcpServerSocketHandler(socket, CoreChannel.RequestQueue, netStream);
#if !FEATURE_PAL
WindowsIdentity identity = null;
#endif // !FEATURE_PAL
// If authentication is requested wait for auth request.
closeImmediately = false;
if (_secure)
{
#if !FEATURE_PAL
identity = Authenticate(ref netStream, streamManager);
// Create a new SocketHandler to wrap the new netStream
streamManager = new TcpServerSocketHandler(socket, CoreChannel.RequestQueue, netStream);
if (_authorizeRemotingConnection != null)
{
bool authorized = _authorizeRemotingConnection.IsConnectingIdentityAuthorized(identity);
if (!authorized)
throw new RemotingException(CoreChannel.GetResourceString(
"Remoting_Tcp_ServerAuthorizationIdentityFailed"));
}
#else
throw new NotSupportedException();
#endif // !FEATURE_PAL
}
#if !FEATURE_PAL
// Cache the identity for impersonation
streamManager.ImpersonationIdentity = identity;
#endif // !FEATURE_PAL
streamManager.DataArrivedCallback = new WaitCallback(_transportSink.ServiceRequest);
streamManager.BeginReadMessage();
}
catch (Exception e)
{
// Close the socket pre-emptively. We also close the socket if
// We need to catch all exceptions if we hit ObjectDisposedException
try{
if (streamManager != null){
streamManager.SendErrorResponse(e, false);
}
if (socket != null){
if (closeImmediately)
socket.Close(0);
else
socket.Close();
}
}catch(Exception){}
if (!_bListening)
{
// We called Stop() on the tcp listener, so gracefully exit.
//bOkToListen = false;
}
else
{
// we want the exception to show up as unhandled since this
// is an unexpected failure.
if (!(e is SocketException))
{
// <
}
}
}
}
private void AcceptSocketCallback(IAsyncResult ar)
{
Socket socket = null;
TcpServerSocketHandler streamManager = null;
bool flag = true;
try
{
if (this._tcpListener.IsListening)
{
this._tcpListener.BeginAcceptSocket(this._acceptSocketCallback, null);
}
socket = this._tcpListener.EndAcceptSocket(ar);
if (socket == null)
{
throw new RemotingException(string.Format(CultureInfo.CurrentCulture, CoreChannel.GetResourceString("Remoting_Socket_Accept"), new object[] { Marshal.GetLastWin32Error().ToString(CultureInfo.CurrentCulture) }));
}
if ((this._authorizeRemotingConnection != null) && !this._authorizeRemotingConnection.IsConnectingEndPointAuthorized(socket.RemoteEndPoint))
{
throw new RemotingException(CoreChannel.GetResourceString("Remoting_Tcp_ServerAuthorizationEndpointFailed"));
}
socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.Debug, 1);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, 1);
LingerOption optionValue = new LingerOption(true, 3);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Linger, optionValue);
Stream stream = new SocketStream(socket);
streamManager = new TcpServerSocketHandler(socket, CoreChannel.RequestQueue, stream);
WindowsIdentity identity = null;
flag = false;
if (this._secure)
{
identity = this.Authenticate(ref stream, streamManager);
streamManager = new TcpServerSocketHandler(socket, CoreChannel.RequestQueue, stream);
if ((this._authorizeRemotingConnection != null) && !this._authorizeRemotingConnection.IsConnectingIdentityAuthorized(identity))
{
throw new RemotingException(CoreChannel.GetResourceString("Remoting_Tcp_ServerAuthorizationIdentityFailed"));
}
}
streamManager.ImpersonationIdentity = identity;
streamManager.DataArrivedCallback = new WaitCallback(this._transportSink.ServiceRequest);
streamManager.BeginReadMessage();
}
catch (Exception exception)
{
try
{
if (streamManager != null)
{
streamManager.SendErrorResponse(exception, false);
}
if (socket != null)
{
if (flag)
{
socket.Close(0);
}
else
{
socket.Close();
}
}
}
catch (Exception)
{
}
if (this._bListening)
{
SocketException exception3 = exception as SocketException;
}
}
}
