pahomqtt 卡死导致无法publish消息

发布于 2022-05-23 15:36:56 浏览：748 订阅该版

硬件平台： STM32F407+LAN8740A
软件平台：4.0.3+pahomqtt1.1.0
复现方法：断开路由器外网网线
问题现象：mqtt线程卡死，导致publish消息无反应，ping百度正常，说明外网通信正常
调试发现publish线程卡死，mqtt0线程也卡死，不确定好卡在哪里
publish代码如下：
```c
    while(1){
        Retry = 10;
        rt_memset(msg_ptr,0,sizeof(PubData_t));
        if (rt_mq_recv(&MQTTPubMQ, msg_ptr, sizeof(PubData_t),RT_WAITING_FOREVER) == RT_EOK){
            while(Retry--){

easyblink(LED_Communication, 1, LED_SHORTDUTY>>1, LED_SHORTCYCLE>>1);
                msg_ptr->timestamp+=28800;
                LOG_D("%.*s", 25, ctime(&msg_ptr->timestamp));
                list_mem();
                itoa(msg_ptr->timestamp,Filename,10);
                rt_memcpy(Filename+strlen(Filename),".json\x00",6);
                if(!MqttClient.isonline){
                    LOG_E("Wait MQTT Connect");
                }

while(!MqttClient.isonline ){
                    rt_thread_delay(1000);
                }
                while(Socket_Busy== RT_TRUE){
                    rt_thread_delay(1000);
                }

Socket_Busy = RT_TRUE ;
                if(paho_mqtt_publish(&MqttClient, msg_ptr->PUB_QOS, msg_ptr->Topic, msg_ptr->PayLoad)){
                    LOG_E("PUB %s Fail",msg_ptr->Topic,msg_ptr->PayLoad);
                }
                else{
                    LOG_I("PUB %s %s Success",msg_ptr->Topic,msg_ptr->PayLoad);
                    break;
                }
            }
        }
    }
}
```