emqx通过负载后获取真实IP

背景

项目中使用了负载均衡，通过haproxy搭建的负载，在请求分发过后，emqx获取的IP为负载机器的IP

要求：获取请求的原始IP

haproxy负载配置

如下配置中主要通过send-proxy向后传递真实IP，一般获取IP主要是tcp和ssl

listen emqx_mqtt_tcp
    bind *:1993
    mode tcp
    maxconn 1000000
    option clitcpka
    timeout client 2m
    timeout server 2m
    option tcplog
    balance leastconn
    server node1 node3.iotplatform.com:1883 send-proxy check
    server node2 node2.iotplatform.com:1883 send-proxy check

listen emqx_mqtt_ssl
    bind *:9993 ssl crt /etc/ssl/emqx/server.pem no-sslv3
    mode tcp
    #mode http
    maxconn 1000000
    option clitcpka
    timeout client 2m
    timeout server 2m
    option tcplog
    balance leastconn
    server node1 node3.iotplatform.com:1883 send-proxy check
    server node2 node2.iotplatform.com:1883 send-proxy check

listen emxq_dashboard
    bind *:19093
    mode tcp
    maxconn 1000000
    option clitcpka
    timeout client 2m
    timeout server 2m
    option tcplog
    balance leastconn
    server node1 node3.iotplatform.com:18083 check
    server node2 node2.iotplatform.com:18083 check

emqx配置

emqx需要配置emqx.conf文件，获取传递的IP ，通过rpm方式安装的emqx配置文件默认是/etc/emqx.conf

## 为了获取 IP 地址，需要设置 proxy_protocol
listener.tcp.external.proxy_protocol = on
listener.ssl.external.proxy_protocol = on