I'm not a windows developer but I do see some potential problems that may be broken or may just be how windows work.

Havoc do you know who we can assign this to?  I've inlined some comments bellow prepended by J5: for easy searching.

(In reply to comment #0)
> in the follow function,the fd from socket function is not be close.
> i think that the closesocket must be called.otherwise, resource leak
> 
> int
> _dbus_connect_tcp_socket (const char     *host,
>                           const char     *port,
>                           const char     *family,
>                           DBusError      *error)
> {
>   int fd = -1, res;
>   struct addrinfo hints;
>   struct addrinfo *ai, *tmp;
> 
>   _DBUS_ASSERT_ERROR_IS_CLEAR (error);
> 
>   _dbus_win_startup_winsock ();
> 
>   fd = socket (AF_INET, SOCK_STREAM, 0);
> 
>   if (DBUS_SOCKET_IS_INVALID (fd))
>     {
>       DBUS_SOCKET_SET_ERRNO ();
>       dbus_set_error (error,
>                       _dbus_error_from_errno (errno),
>                       "Failed to create socket: %s",
>                       _dbus_strerror (errno));
> 
>       return -1;
>     }
> 
>   _DBUS_ASSERT_ERROR_IS_CLEAR(error);
> 
>   _DBUS_ZERO (hints);
> 
>   if (!family)
>     hints.ai_family = AF_UNSPEC;
>   else if (!strcmp(family, "ipv4"))
>     hints.ai_family = AF_INET;
>   else if (!strcmp(family, "ipv6"))
>     hints.ai_family = AF_INET6;
>   else
>     {
>       dbus_set_error (error,
>                       _dbus_error_from_errno (errno),
>                       "Unknown address family %s", family);
        /* J5: should close the socket here */ 
>       return -1;
>     }
>   fprintf(stderr, "Family %s\n", family ? family : "none");
>   hints.ai_protocol = IPPROTO_TCP;
>   hints.ai_socktype = SOCK_STREAM;
> #ifdef AI_ADDRCONFIG
>   hints.ai_flags = AI_ADDRCONFIG;
> #else
>   hints.ai_flags = 0;
> #endif
> 
>   if ((res = getaddrinfo(host, port, &hints, &ai)) != 0)
>     {
>       dbus_set_error (error,
>                       _dbus_error_from_errno (errno),
>                       "Failed to lookup host/port: \"%s:%s\": %s (%d)",
>                       host, port, gai_strerror(res), res);
>       closesocket (fd);
>       return -1;
>     }
> 
>   tmp = ai;

   /* J5: it seems that fd is being dangled here and the socket 
          should be closed before going into the while loop
   */
>   while (tmp)
>     {
>       if ((fd = socket (tmp->ai_family, SOCK_STREAM, 0)) < 0)
>         {
>           freeaddrinfo(ai);
>           dbus_set_error(error,
>                          _dbus_error_from_errno (errno),
>                          "Failed to open socket: %s",
>                          _dbus_strerror (errno));
>           return -1;
>         }
>       _DBUS_ASSERT_ERROR_IS_CLEAR(error);
> 
>       if (connect (fd, (struct sockaddr*) tmp->ai_addr, tmp->ai_addrlen) < 0)
>         {
>           closesocket(fd);
>           fd = -1;
>           tmp = tmp->ai_next;
>           continue;
>         }
> 
>       break;
>     }
>   freeaddrinfo(ai);
> 
>   if (fd == -1)
>     {
>       dbus_set_error (error,
>                       _dbus_error_from_errno (errno),
>                       "Failed to connect to socket \"%s:%s\" %s",
>                       host, port, _dbus_strerror(errno));
>       return -1;
>     }
> 
> 
>   if (!_dbus_set_fd_nonblocking (fd, error))
>     {
>       closesocket (fd);
>       fd = -1;
> 
>       return -1;
>     }
> 
>   return fd;
> }
> 

I don't know of anyone to assign it to.

Created attachment 37710 [details] [review]
related patch by Romain Pokrzywka

patch applied to dbus master