Socket IO服务器连接失败（400错误）排查求助

算力阿峰

2026-7-15

Socket.IO服务部署Rocket Linux后Nginx反向代理报400错误无法连接

我用Python开发的Socket.IO服务器部署到Rocket Linux服务器，配置好Nginx反向代理后，客户端连接时出现400错误。该服务在本地运行完全正常，且相同的Nginx配置在其他服务器上可以成功建立连接。相关信息如下：

客户端错误提示

Error: Unexpected server response: 400

Nginx配置

server {
        listen 5000 ssl;
        server_name  e-buyurtma.ecdn.uz  www.e-buyurtma.ecdn.uz;

        access_log      /var/log/nginx/ws-server-access.log;
        error_log       /var/log/nginx/ws-server-error.log;

        location ^~/socket.io {
            proxy_pass http://127.0.0.1:3675;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            proxy_set_header Host $host;
        }

        ssl_certificate                 hidden;
        ssl_certificate_key             hidden;
        ssl_protocols                   TLSv1.2 TLSv1.1 TLSv1;
        ssl_ciphers                     hidden;
        ssl_prefer_server_ciphers       on;
        ssl_dhparam                     hidden;
        ssl_session_timeout             5m;

}