Nginx实现同时兼容http协议和websocket协议

map $http_upgrade $eop_gateway {default "eop-gateway-http";websocket "eop-gateway-ws";
}# 控制 Connection header
map $http_upgrade $connection_upgrade {default "keep-alive";    # HTTP 请求websocket "upgrade";     # WebSocket 请求
}upstream eop-gateway-http {server XXXXX:8080;
}upstream eop-gateway-ws {server XXXXX:23643;
}server {listen 8888;location / {proxy_pass http://$eop_gateway;# 通用设置proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;proxy_set_header X-Forwarded-Proto $scheme;# WebSocket 设置proxy_http_version 1.1;proxy_set_header Upgrade $http_upgrade;proxy_set_header Connection $connection_upgrade;}
}

参数解释：

重要的是这两行，它表明是websocket连接进入的时候，进行一个连接升级将http连接变成websocket的连接。
启用支持websocket连接：
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection “upgrade”;
proxy read timeout 表明连接成功以后等待服务器响应的时候，如果不配置默认为60s;
proxy_http_version 1.1;表明使用http版本为1.1