/// <summary>
/// Binds the channel to the specified endpoint.
/// </summary>
/// <param name="remoteEndpoint">The endpoint to connect to.</param>
/// <param name="forwardedPort">The forwarded port for which the channel is opened.</param>
public void Bind(IPEndPoint remoteEndpoint, IForwardedPort forwardedPort)
{
if (!IsConnected)
{
throw new SshException("Session is not connected.");
}
_forwardedPort = forwardedPort;
_forwardedPort.Closing += ForwardedPort_Closing;
// Try to connect to the socket
try
{
_socket = SocketAbstraction.Connect(remoteEndpoint, ConnectionInfo.Timeout);
// send channel open confirmation message
SendMessage(new ChannelOpenConfirmationMessage(RemoteChannelNumber, LocalWindowSize, LocalPacketSize, LocalChannelNumber));
}
catch (Exception exp)
{
// send channel open failure message
SendMessage(new ChannelOpenFailureMessage(RemoteChannelNumber, exp.ToString(), ChannelOpenFailureMessage.ConnectFailed, "en"));
throw;
}
var buffer = new byte[RemotePacketSize];
SocketAbstraction.ReadContinuous(_socket, buffer, 0, buffer.Length, SendData);
}
/// <summary>
/// Establishes a socket connection to the specified host and port.
/// </summary>
/// <param name="host">The host name of the server to connect to.</param>
/// <param name="port">The port to connect to.</param>
/// <param name="timeout">The maximum time to wait for the connection to be established.</param>
/// <exception cref="SshOperationTimeoutException">The connection failed to establish within the configured <see cref="ConnectionInfo.Timeout"/>.</exception>
/// <exception cref="SocketException">An error occurred trying to establish the connection.</exception>
protected Socket SocketConnect(string host, int port, TimeSpan timeout)
{
var ipAddress = DnsAbstraction.GetHostAddresses(host)[0];
var ep = new IPEndPoint(ipAddress, port);
DiagnosticAbstraction.Log(string.Format("Initiating connection to '{0}:{1}'.", host, port));
var socket = SocketFactory.Create(ep.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
try
{
SocketAbstraction.Connect(socket, ep, timeout);
const int socketBufferSize = 2 * Session.MaximumSshPacketSize;
socket.SendBufferSize = socketBufferSize;
socket.ReceiveBufferSize = socketBufferSize;
return(socket);
}
catch (Exception)
{
socket.Dispose();
throw;
}
}
