Question

由于某种原因，我不得不在C ++代码中使用C API。谁能帮助我找到此代码无法正常工作的原因。

void ConfigureBroker()
{
   auto res = mosquitto_lib_init();
   if (res == MOSQ_ERR_SUCCESS)
      std::cout<<" mosquitto_lib_init succeed. "<<std::endl;
   else
      std::cout<<" mosquitto_lib_init failed with result : "<<res<<std::endl;

   struct mosquitto * mosq = NULL;
   const char *clientId = "mydev";
   mosq = mosquitto_new(clientId, true, NULL);
   if (!mosq) {
      std::cout<<" mosquitto_new failed. "<<std::endl;
      return;
   }
   else
      std::cout<<" mosquitto_new succeed. "<<std::endl;

   res = mosquitto_tls_set(mosq, "path/to/CA.crt", NULL,
                         "path/to/crts/DeviceCert1.crt",
                         "path/to/DeviceCert1.key", NULL);

   if (MOSQ_ERR_SUCCESS == res)
      std::cout<<"mosquitto_tls_set succeed."<<std::endl;
   else
      std::cout<<"mosquitto_tls_set failed with result : "<<res<<std::endl;

   mosquitto_connect_callback_set(mosq, my_connect_callback);

   const char *host = "amazonaws.com";
   res = mosquitto_connect(mosq, host, 8883, 60);

   if (MOSQ_ERR_SUCCESS == res)
      std::cout<<"mosquitto_connect succeed."<<std::endl;
   else
      std::cout<<"mosquitto_connect failed with result : "<<res<<std::endl;

   while(!mosquitto_loop(mosq, -1, 1))
      std::cout<<"mosquitto_loop_forever suceed. \n "<<std::endl;
}

上述代码的输出如下

mosquitto_lib_init succeed.
mosquitto_new succeed.
mosquitto_tls_set succeed.
mosquitto_connect succeed.
mosquitto_loop_forever suceed.
mosquitto_loop_forever suceed.
mosquitto_loop_forever suceed.
mosquitto_loop_forever suceed.
mosquitto_loop_forever suceed.
mosquitto_loop_forever suceed.
mosquitto_loop_forever suceed.

my_connect_callback（）函数确实被调用，即使mosquitto_connect（）返回0。实际上，没有一个回调函数   接到电话。



尽管API成功执行，但无法将数据推送到AWS。

故意从上面的代码中删除了

mosquitto_publish（），这也导致成功。任何帮助将不胜感激。

仅供参考：mosquitto_loop_forever（mosq，-1，1）; 失败，并显示错误发生TLS错误。

现在已使用相同的证书在 mosquitto_pub 中进行了测试，结果显示我可能需要检查的证书存在问题

Client mosqpub|11358-PCMA4GF11 sending CONNECT
OpenSSL Error: error:14094416:SSL routines:ssl3_read_bytes:sslv3 alert certificate unknown
Error: A TLS error occurred.

mosquitto c API的回调函数未调用

0 个答案: