Nginx WebSocket 反向代理与长连接优化

upstream ws_backend {
    server 127.0.0.1:7002;
    keepalive 64;
}

server {
    listen 80;
    server_name example.com;

    location /ws/ {
        proxy_pass http://ws_backend;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_read_timeout 600s;
        proxy_send_timeout 600s;
    }
}

总结

为 WebSocket 设置 Upgrade/Connection 并延长超时，配合 upstream keepalive，可显著提升长连接稳定性。