Hi, i'm trying to make a WinSock network program run on a single computer using the LoopBack address but it dosen't seem to work (It dosent return true on connect). I have WinXP on my machine. Here the code: #pragma comment(lib, "WSOCK32.lib") #include <iostream> #include <winsock.h> #include <string> using namespace std; int main() { string ip; int port; //Define ip and port ip = "127.0.0.1"; port = 80; //Define containers for the data and version WSADATA sockData; WORD version; SOCKET conn; //Define container for exceptions int error; //Make version version = MAKEWORD(1,1); //Start winsock API with version and data as buffer (&) error = WSAStartup(version, &sockData); //Start the socket conn = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); //Once socket is established give values to nodes SOCKADDR_IN Winsock; Winsock.sin_family = AF_INET; //Winsock connection port Winsock.sin_port = htons(port); //Winsock connection IP Winsock.sin_addr.s_addr = inet_addr(ip.c_str()); //Connect on the socket if(connect(conn, (SOCKADDR*) &Winsock, sizeof(Winsock)) == SOCKET_ERROR) { //if an error return the error number cout << "An exception has occured (" << WSAGetLastError() << ")\n"; //Cleanup socket WSACleanup(); system("PAUSE"); return EXIT_FAILURE; } cout << "Socket Connection established\n"; //Close socket connection closesocket(conn); cout << "Socket Connection closed\n"; system("pause"); return EXIT_SUCCESS; }

What did you mean by "connect to a server"??? The loopback address isn't for
testing your app withont being on the internet???

You still need a server application running on your machine for your client application to connect to.

And how can i do that?(sorry for my ignarance on the subject)

You need to create a program that listens on the port your client program is trying to connect to. This page has some info on doing it.

Thxn to all, i'll check it out