------ Build started: Project: test_WSA, Configuration: Debug Win32 ------
Linking...
test_WSA.obj : error LNK2019: unresolved external symbol __imp__WSACleanup@ 0  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__WSAAccept@ 20  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__listen@ 8  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__bind@ 12  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__inet_addr@ 4  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__inet_ntoa@ 4  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__gethostbyname@ 4  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__htons@ 4  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__socket@ 12  referenced in function _main
test_WSA.obj : error LNK2019: unresolved external symbol __imp__WSAStartup@ 8  referenced in function _main
D:\WORK\MSVStudio\Projects\test_WSA\Debug\test_WSA.exe : fatal error LNK1120:  10  unresolved externals
Build log was saved at "file://d:\WORK\MSVStudio\Projects\test_WSA\test_WSA\Debug\BuildLog.htm"
test_WSA -  11  error(s),  0  warning(s)
========== Build:  0  succeeded,  1  failed,  0  up-to-date,  0  skipped ==========

#include <stdio.h>
#include "winsock2.h"

void main() {
  //-----------------------------------------
  // Declare and initialize variables.
  WSADATA wsaData;
  SOCKET ListenSocket, AcceptSocket;
  sockaddr saClient;
  int iClientSize = sizeof(saClient);
  u_short port =  27015 ;
  char* ip;
  sockaddr_in service;

  //-----------------------------------------
  // Initialize Winsock.
  WSAStartup(MAKEWORD( 2 , 2 ), &wsaData);

  //-----------------------------------------
  // Create a listening socket.
  ListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

  //-----------------------------------------
  // Set up the sock addr structure that the listening socket
  // will be bound to. In this case, the structure holds the
  // local IP address and the port specified.
  service.sin_family = AF_INET;
  service.sin_port = htons(port);
  hostent* thisHost;
  thisHost = gethostbyname("");
  ip = inet_ntoa (*(struct in_addr *)*thisHost->h_addr_list);
  service.sin_addr.s_addr = inet_addr(ip);

  //-----------------------------------------
  // Bind the listening socket to the IP address.
  // and port number specified by the sockaddr structure.
  bind(ListenSocket, (SOCKADDR *) &service, sizeof(SOCKADDR));

  //-----------------------------------------
  // Make the listening socket listen for incoming
  // connection requests.
  listen(ListenSocket,  1 );
  printf("Listening...\n");

  //-----------------------------------------
  // Accept an incoming connnection request on the
  // listening socket and transfer control to the 
  // accepting socket.
  AcceptSocket = WSAAccept(ListenSocket, &saClient, &iClientSize, NULL, NULL);

  //-----------------------------------------
  // Clean up and quit. At this point, the application could
  // handle data transfer on the socket, or other socket
  // functionality.
  WSACleanup();
  return;
}