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August 29, 2008 09:10pm pdt
 
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Win32 Winsock non-blocking socket for connect()

Tags: C++, Win32
Hi,

I've done enough googling on this and am about to go bald so figured i'd give in and ask here.

I'd like to make this non-blocking, to speed up the process, allowing me to specify a timeout. If that's not possible i'd like to thread it as a last resort to allow multiple connection attempts.

My code is as follows:
-------------------------
    /*
     * Make sure we're dealing with a valid socket.
     */
    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
    {
        WSACleanup();                                                      // Cleanup Winsock.
        perror("Socket");
        exit(-1);
    }

    SOCKADDR_IN addr;                                                      // Socket address information.
    addr.sin_family = AF_INET;                                          // Address family internet.
    addr.sin_addr = *((LPIN_ADDR)*rh->h_addr_list);            // IP to connect to.
    addr.sin_port = htons(port);                                    // Port to connect on.

      /*
       * Try and connect to the port.
      */
      if ((connect(sock,(struct sockaddr *) &addr, sizeof(addr))) == 0)
      {
        return 0;
      }
      else
      {
        return 1;
      }

      /*
       * Close socket.
       */
    close(sock);
-------------------------

If someone could point out what I need to use to make this non-blocking that'd be great. I'd rather not use Winsock2 stuff like WSAEVENT.

Cheers,

Dave
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Question Stats
Zone: Programming
Question Asked By: DaveHope
Solution Provided By: jkr
Participating Experts: 1
Solution Grade: A
Views: 162
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