Mosquitto经纪人1.5.9版
已启用并建立了WebSocket支持
在代理上打开端口9001
OS Amazon Linux 2 AMI（Fedora）
mosquitto_conf
port 1883
listener 9001
protocol websockets
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1592388049: mosquitto -c /etc/mosquitto/mosquitto.conf
1592388049: mosquitto version 1.5.9 starting
1592388049: Config loaded from /etc/mosquitto/mosquitto.conf.
1592388049: |-- *** auth-plug: startup
1592388049: |-- ** Configured order: mysql
1592388049: |-- }}}} MYSQL
1592388049: |-- SSL is disabled
1592388049: Opening websockets listen socket on port 9001.
1592388049: Opening ipv4 listen socket on port 1883.
1592388049: Opening ipv6 listen socket on port 1883.
但是，当我尝试使用简单的Paho Javascript程序通过websocket连接到代理时，出现以下错误：
mqttws31.js：977 WebSocket连接到'ws：//x.x.x.x：9001 / mqtt' 失败：建立连接错误：net :: ERR_CONNECTION_REFUSED
连接失败：AMQJSC0001E连接超时。重试