c# TCP connection with a C++ dll

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HI all,

How to develop in C# a program to communicate (send and receive) with this existing C++ library ??

This library is already developed and I can't change it.

I tried putty with this parameters with success :
http://athiri.cimds.ri.cmu.edu/files/TcpBridge-putty.jpg

Think you for your help !

The C++ library has this parameters :

WSADATA winsock;
	SOCKET listenSocket, clientSocket;
	sockaddr_in socketAddress;

	// Setup WinSock
	if(WSAStartup (0x0202, &winsock) != 0) return;
	if (winsock.wVersion != 0x0202){
		WSACleanup ();
		return;
	}

	// Configure the socket for TCP
	listenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
	if(listenSocket == INVALID_SOCKET){
		MessageBox(NULL, "Socket failed", "VBS2 TCP Bridge", MB_OK);	
		return;
	}

	// Bind to port
	memset(&socketAddress, 0, sizeof(sockaddr_in));
	socketAddress.sin_family = AF_INET;
	socketAddress.sin_port = htons(SERVER_PORT);
	socketAddress.sin_addr.s_addr = htonl(INADDR_ANY);
	if (bind(listenSocket, (LPSOCKADDR)&socketAddress, sizeof(socketAddress)) == SOCKET_ERROR){
	  MessageBox(NULL, "Bind Failed", "VBS2 TCP Bridge", MB_OK);
	  WSACleanup();
	  return;
	}

Posted 8-May-11 21:20pm

canard29

Updated 8-May-11 23:47pm

v2

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Sergey Alexandrovich Kryukov 9-May-11 3:44am

Where is your question!
--SA

Kim Togo 9-May-11 5:12am

What is the question?

canard29 9-May-11 12:32pm

how to do this in C# ? I tried many solution but without success

1 solution

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Kim Togo · Answer 1 · 2011-05-09T09:15:00

Check out TcpListener[^], there is two good examples on how to use TcpListener and TcpClient.

C#

TcpListener server=null;

// Setup listener, accept on any IP address on local computer on TCP port 13000.
server = new TcpListener(IPAddress.Any, 13000);

// Start to listen for clients
server.Start();

// Wait her for incomming connections.
TcpClient client = server.AcceptTcpClient();