fprintf(stderr,"Unable to connect.\n");return1; }//循环处理网络消息mosquitto_loop_forever(mosq, -1,1);//endmosquitto_destroy(mosq); mosquitto_lib_cleanup();return0; } 我当前的工作环境 备注:我当前的makefile编译的是pub.c或者是sub.c中的一个,编译pub.c的时候,先不要把sub.c放在当前目录,...
{ intrc = mosquitto_loop(mosq, -1,1); if(rc) { printf("mqtt_portal: mosquitto_loop rc = %d \n", rc); sleep(1); mosquitto_reconnect(mosq); } } 方式2 //循环处理网络消息 mosquitto_loop_forever(mosq, -1,1); 方式1比起方式2优点是如果mosquitto服务器端口后,能够及时打印信息。 本博客...
*/ mosquitto_loop_forever(mosq, -1, 1); mosquitto_lib_cleanup(); return 0; } 回到终端,输入make,生成可执行文件pub和sub,并复制到开发板上: 开发板上的可执行文件 3 示例代码测试 3.1 启动服务端 先在Ubuntu上打开文件/etc/mosquitto/mosquitto.conf(如果没有就创建一个),在文件中增加如下配置项: #...
mosquitto_loop_stop(mosq, true);mosquitto_destroy(mosq);mosquitto_lib_cleanup();return 0;fail_mosq_loop_start:mosquitto_disconnect(mosq);fail_mosq_conn:mosquitto_destroy(mosq);fail_mosquitto_new:mosquitto_lib_cleanup();fail_mosquitto_lib:return err;} Makefile INCLUDES = -lmosquitto -lpthread -...
Hi, we are using libmosquitto in an externally threaded way (mosquitto_threaded_set(conn, 1)). We have one thread running mosquitto_loop_forever() and want to make this exit by calling mosquitto_disconnect() in another thread. This usual...
client.loop_forever() def on_connect(client, userdata, flags, rc): print('Connected with result code ' + str(rc)) client.subscribe('/topic1') def on_message(client, userdata, msg): print(msg.topic + ' ' + msg.payload.decode('utf-8')) ...
client.loop_forever() except KeyboardInterrupt: client.disconnect() gpio_destroy() 3.3 启动服务并发布消息 在PC机中启动MQTT代理服务 mosquitto -v 在树莓派中运行脚本 sudo python simple.py 在PC机中发布消息 # 打开GPIO17 mosquitto_pub -h 192.168.1.110 -t gpio -m "{"pin":17,"value":1}" ...
client.loop_forever() exceptKeyboardInterrupt: client.disconnect() gpio_destroy() 3.3 启动服务并发布消息 在PC机中启动MQTT代理服务 1 mosquitto -v 在树莓派中运行脚本 1 sudopython simple.py 在PC机中发布消息 1 2 3 4 # 打开GPIO17 mosquitto_pub -h 192.168.1.110 -t gpio -m"{\"pin\":17,\"...
gpio_setup()try:# 请根据实际情况改变MQTT代理服务器的IP地址client.connect("192.168.1.110",1883,60)client.loop_forever()exceptKeyboardInterrupt:client.disconnect()gpio_destroy() 4.3 启动服务并发布消息 在PC机中启动MQTT代理服务 mosquitto -v 在树莓派中运行脚本 ...
而mosquitto_loop_forever有一个int timeout参数, 这个是在建立连接后保持连接的超时时间.参考:mosqutto.h: mosquitto_connectlibmosquitto doc/eclipse/mosquitto/lib/connect.c有用 回复 Limo: 谢谢朋友, 但是 keepalive 设为0,1,2 都没用。 服务器用的国产免费 EMQ 搭建的,它的默认监听端口是1883(在服务端...