[MQTT]部署mosquitto服务

一，部署mosquitto服务
安装工具

sudo apt-get install libssl-dev libc-ares-dev uuid-dev

下载 Mosquitto

wget http://mosquitto.org/files/source/mosquitto-1.4.13.tar.gz

解压

tar xzvf mosquitto-1.4.13.tar.gz

安装

cd mosquitto-1.4.13/make -jusudo make install

使用过程中找不到libmosquitto.so.1

error while loading shared libraries: libmosquitto.so.1: cannot open shared object file: No such file or directory

【解决方法】——修改libmosquitto.so位置
创建链接并更新动态链接库

sudo ln -s /usr/local/lib/libmosquitto.so.1 /usr/lib/libmosquitto.so.1sudo ldconfig

启动服务

mosquitto -c /etc/mosquitto/mosquitto.conf.example

调试命令示例
订阅

mosquitto_sub -h localhost -t TAG

发布

 mosquitto_pub -h localhost -t TAG -m test

二，安装php的mqtt扩展

安装php工具

sudo apt install php-pear php7.0-dev

安装扩展

sudo pecl install Mosquitto-alpha

配置扩展，打开下面两个文件

sudo vim /etc/php/7.0/apache2/php.inisudo vim /etc/php/7.0/cli/php.ini

文件末尾添加

extension=mosquitto.so

重启服务

sudo service apache2 restart

发布消息示例代码

<?php$client = new Mosquitto\Client();$client->connect("localhost", 1883, 5);$client->loop();$mid = $client->publish('/hello', "Hello from PHP at " . date('Y-m-d H:i:s'), 1, 0);$client->loop();$client->disconnect();

接收消息示例代码

<?php$client = new Mosquitto\Client();$client->onMessage('message');$client->connect("localhost", 1883, 5);$client->subscribe('#', 1);$client->loopForever();function message($message) {        printf("Got a message on topic %s with payload:\n%s\n", $message->topic, $message->payload);}

SSL配置如下(/etc/mosquitto/)：

#cafile  /etc/ssl/whiteskycn/server_chain.crtcapath /etc/ssl/whiteskycn/# Path to the PEM encoded server certificate.certfile /etc/ssl/whiteskycn/server.crt# Path to the PEM encoded keyfile.keyfile /etc/ssl/whiteskycn/server.key

可以用wget https://github.com/owntracks/tools/raw/master/TLS/generate-CA.sh 生成server和client端的key。

示例代码及相关文档：
https://github.com/mgdm/Mosquitto-PHP
http://mosquitto-php.readthedocs.io/en/latest/
https://github.com/mqtt/mqtt.github.io/wiki/libraries
http://blog.csdn.net/peakguy/article/details/71634842