我们的 WebSocket 服务实现了集群模式，则需要使用 Nginx 代理转发 WebSocket 实现负载均衡的效果，配置如下：
- 1、原始配置文件如下：
worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; server { listen 80; server_name localhost; location / { root html; index index.html index.htm; } error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } } }
- 2、加入 WS 后：
worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; server { listen 80; server_name localhost; location / { root html; index index.html index.htm; } error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } } # WS server map $http_upgrade $connection_upgrade { default upgrade; '' close; } upstream wsbackend { server 127.0.0.1:6789; server 127.0.0.1:6790; keepalive 1000; } server { listen 20038; server_name game.wqddz.com; location / { proxy_http_version 1.1; proxy_pass http://wsbackend; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_read_timeout 3600s; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection $connection_upgrade; } } }
此时，访问 ws://localhost:20038 就会被转发到 127.0.0.1:6789 和 127.0.0.1:6790 上
