Winsock client/server - server socket error

[sunburnt]

This line:

if (hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)==0)
{
   // create successful ..

is wrong.

if ( (hSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) != INVALID_SOCKET)
{
  // create succesful...

is correct. In the first case, you're saying that the socket is only successfuly created if socket() returns 0. Actually, socket() returns INVALID_SOCKET if it fails to create a socket, or a handle to the socket otherwise. So the code I've written says "as long as hSocket is not INVALID_SOCKET" then creating the socket succeeded.

Good luck!

PS -- for more information check the msdn page on the functions you're using. For example, here is the page on socket: http://msdn2.microsoft.com/en-us/library/ms740506.aspx