private void HandleMessage(DirectTcpIpMessage message)
{
var channel = HandleChannelOpenMessage(message);
var args = new TcpRequestArgs(channel,
message.Host,
(int)message.Port,
message.OriginatorIPAddress,
(int)message.OriginatorPort,
_auth);
TcpForwardRequest?.Invoke(this, args);
}
private void HandlePortForward(ChannelOpenMessage message, string address, uint port, string originationIP, uint originatorPort)
{
var channel = new SessionChannel(
this,
message.SenderChannel,
message.InitialWindowSize,
message.MaximumPacketSize,
(uint)Interlocked.Increment(ref _serverChannelCounter));
var readyToAcceptData = false;
var args = new TcpRequestArgs(
this._session,
address,
port,
originationIP,
originatorPort,
() =>
{
return(readyToAcceptData);
},
(byte[] data) =>
{
if (!channel.ClientClosed && !channel.ServerClosed)
{
channel.SendData(data);
}
else
{
throw new IOException("Connection closed");
}
},
() =>
{
if (!channel.ClientClosed && !channel.ServerClosed)
{
try
{
channel.SendClose();
}
catch
{
}
}
}
);
TcpForwardRequest(this, args);
Action <object, byte[]> eventHandlerForDataReceived = (sender, data) => {
try
{
args.OnClientData(data);
}
catch
{
channel.SendClose();
}
};
channel.DataReceived += (o, ea) => eventHandlerForDataReceived(o, ea);
lock (_locker)
_channels.Add(channel);
// send SSH_MSG_CHANNEL_OPEN_CONFIRMATION
var msg = new ChannelOpenConfirmationMessage
{
RecipientChannel = channel.ClientChannelId,
SenderChannel = channel.ServerChannelId,
InitialWindowSize = channel.ServerInitialWindowSize,
MaximumPacketSize = channel.ServerMaxPacketSize
};
_session.SendMessage(msg);
readyToAcceptData = true;
}