WebSocket握手期间跨域WebSocket连接失败:意外响应代码:400

时间:2017-01-19 13:02:22

标签: node.js nginx websocket socket.io

我正在尝试在Node js应用程序中使用socket.io。我将应用程序放在子域上,并且前端运行在域的www版本上。

不能在同一域上运行前端和Node js服务。

从客户端到服务器来回发送数据似乎正在起作用。我已经通过两种方式发送数据,但它运行良好。

但是,在浏览器的控制台中,我收到以下错误。

WebSocket connection to 'wss://subdomain.domain.com/socket.io/?EIO=3&transport=websocket&sid=6bNHWyXcCdlMI0HHAAAB' failed: Error during WebSocket handshake: Unexpected response code: 400

我的Nginx配置如下所示:

# HTTP - redirect all requests to HTTPS:
server {
        listen 80;
        listen [::]:80 default_server ipv6only=on;
        return 301 https://$host$request_uri;
}

# HTTPS - proxy requests on to local Node.js app:
server {
        listen 443;
        server_name subdomain.domain.com;

        ssl on;
        # Use certificate and key provided by Let's Encrypt:
        ssl_certificate /etc/letsencrypt/live/subdomain.domain.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/subdomain.domain.com/privkey.pem;
        ssl_session_timeout 5m;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_prefer_server_ciphers on;
        ssl_ciphers '*******';

        # Pass requests for / to localhost:3000:
        location / {
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header X-NginX-Proxy true;
                proxy_pass http://localhost:3000/;
                proxy_ssl_session_reuse off;
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
                proxy_redirect off;
                proxy_http_version 1.1;
                proxy_set_header Connection "upgrade";

       }
}

客户端和Node js都使用https。

有谁知道是什么导致了这个问题以及如何修复它?

谢谢

1 个答案:

答案 0 :(得分:4)

您好像忘了升级标头了。如果您想将Nginx用作WebSockets的反向代理,则需要它。

如上所述here,只需尝试添加一个标头: proxy_set_header Upgrade $http_upgrade;