基于MQX的UDP通信，电脑和K60N512能ping通，但是数据接收不到。。。

溺水的企鹅 · 发表于 2013-2-1 14:44:42

基于MQX的UDP通信，电脑和K60N512能ping通，但是数据接收不到。。。

                       这是程序，大家帮忙看一下

         _mqx_int lw_telnet_server(void)
         {
            uint_32 listensock;//sock;
            sockaddr addr;
            sockaddr client_addr;
            uint_32 error, option;

            uchar buffer[2000];
            int count;
            uint_16 addrlen = sizeof(client_addr);


            /* Install device drivers for socket and telnet I/O */
            _io_socket_install("socket:");
            _io_telnet_install("telnet:");


            listensock = socket(AF_INET, SOCK_DGRAM, 0);
            return_error_if(listensock == RTCS_SOCKET_ERROR);


            option = TELNETDCFG_BUFFER_SIZE;
            error = setsockopt(listensock, SOL_UDP, OPT_TBSIZE, &option, sizeof(option));
            return_error_if(error != RTCS_OK);


            option = TELNETDCFG_BUFFER_SIZE;
            error = setsockopt(listensock, SOL_UDP, OPT_RBSIZE, &option, sizeof(option));
            return_error_if(error != RTCS_OK);


            option = TELENETDCFG_TIMEWAIT_TIMEOUT;
            error = setsockopt(listensock, SOL_UDP, OPT_TIMEWAIT_TIMEOUT, &option, sizeof(option));
            return_error_if(error != RTCS_OK);



            #if RTCSCFG_ENABLE_IP4
            ((sockaddr_in*)(&addr))->sin_family = AF_INET;
            ((sockaddr_in*)(&addr))->sin_port = IPPORT_TELNET;
            ((sockaddr_in*)(&addr))->sin_addr.s_addr = INADDR_ANY;

            #elif RTCSCFG_ENABLE_IP6
            printf("\nThis application don't support IPv6 only.\n");
            _task_block();
            #endif

            error = bind(listensock, &addr, sizeof(addr));
            return_error_if(error != RTCS_OK);

            while(1)
            {
            sendto(listensock, "Hello,world!\n", 15, 0, (struct sockaddr *) &client_addr,addrlen);

            count = recvfrom(listensock, buffer, 500, 0, (struct sockaddr *) &client_addr,&addrlen);
            if (count == RTCS_ERROR)
            {
            printf("\nrecvfrom() failed with error %lx",RTCS_geterror(listensock));
            }
            else
            {
            printf("\nReceived %ld bytes of data.", count);
            sendto(listensock, "Hello,world!\n", 15, 0, (struct sockaddr *) &client_addr,addrlen);
            }
            RTCS_time_delay(100);
            }

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