Windows Sockets 1.1应用实例(五十七)

                  break;

                 }

               }

              /* Set the I/O mode of the socket */

              if (blocking_option) {

                  lret = 1L;  /* 非阻塞模式 */

                  ioctlsocket(sd, FIONBIO, (u_long FAR *) &lret);