nginx 反代ws协议进行im在线聊天的 websocket协议
location /im-api/ {
proxy_redirect off;
proxy_pass http://172.26.71.51:9218/; # 转发
proxy_set_header Host $host;
proxy_set_header X-Real_IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr:$remote_port;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade; # 升级协议头 websocket
proxy_set_header Connection upgrade;
}