Mosquitto不发布任何消息

Question

我一直在尝试开发一个C代码，使用蚊子库在TLS上发布关于蚊子经纪人的消息。我在蚊子侧配置了TLS，它工作得很好。我能够使用mosquitto_pub和mosquitto_sub发送和接收消息。

但是，当我尝试使用我的C代码发布消息时，它不起作用。显然，代码连接良好并发送消息，没有错误，但订阅者没有读取任何内容。

下面是我使用的publisher代码：

ReportSender::ReportSender()
{
    mosquitto_lib_init();

    mosquitoStruct = mosquitto_new (NULL, true, NULL);

    mosquitto_tls_opts_set(mosquitoStruct, 1, NULL, NULL);

    mosquitto_tls_set(mosquitoStruct, "~/temp/keys/secondAttempt/server.crt", NULL, NULL, NULL, NULL);

    mosquitto_tls_insecure_set(mosquitoStruct, false);

    mosquitto_connect_callback_set(mosquitoStruct, connect_cb);
    mosquitto_publish_callback_set(mosquitoStruct, publish_cb);
    mosquitto_log_callback_set(mosquitoStruct, log_cb);

    mosquitto_connect (mosquitoStruct, MQTT_BROKER, MQTT_PORT, 0);

    const char *reportRef = "Hello Word!";

    // Publish the message to the topic
    mosquitto_publish (mosquitoStruct, NULL, MQTT_TOPIC,
              strlen(reportRef), reportRef, 0, false);

    sleep (20);
}

订阅者是：

mosquitto_sub -h 192.168.56.101 -p 8883 -t "#" -v --cafile server.crt

怎么啦？

谢谢，毛罗

Answer 1

您应该查看loop*()函数集，这些函数是处理后台网络流量所必需的。publish()不是阻塞调用。