public IEnumerator StartListening()
{
while (true)
{
// Set the event to nonsignaled state.
_allDone = false;
// Start an asynchronous socket to listen for connections.
_ui.WriteLine("Waiting for a connection...");
_socket.BeginAccept(AcceptCallback, state: _socket);
// Wait until a connection is made before continuing.
while (!_allDone)
{
yield return(null);
}
}
}
private IEnumerator StartClient()
{
// Connect to a remote device.
// Establish the remote endpoint for the socket.
// The name of the
// remote device is "host.contoso.com".
IPHostEntry ipHostInfo = Dns.GetHostEntry(TCPTransfer.HOST_NAME);
IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint remoteEP = new IPEndPoint(ipAddress, TCPTransfer.PORT);
// Create a TCP/IP socket.
Socket client = new Socket(ipAddress.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
// Connect to the remote endpoint.
client.BeginConnect(remoteEP, ConnectCallback, client);
while (!_connectDone)
{
yield return(null);
}
// Send test data to the remote device.
Send(client, "This is a test<EOF>");
while (!_sendDone)
{
yield return(null);
}
// Receive the response from the remote device.
Receive(client);
while (!_receiveDone)
{
yield return(null);
}
// Write the response to the console.
_ui.WriteLine($"Response received : {_response}");
// Release the socket.
client.Shutdown(SocketShutdown.Both);
client.Close();
}
public TCPServer(TCPTransfer ui)
{
_ui = ui ?? throw new ArgumentNullException(nameof(ui));
// Establish the local endpoint for the socket.
// The DNS name of the computer
// running the listener is "host.contoso.com".
_ui.WriteLine($"StartListening() - host name: {Dns.GetHostName()}");
IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, TCPTransfer.PORT);
// Create a TCP/IP socket.
_socket = new Socket(ipAddress.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
// Bind the socket to the local endpoint and listen for incoming connections.
_socket.Bind(localEndPoint);
_socket.Listen(100);
}
