使用 Socket.IO 时出现“错误：无效的 WebSocket 帧：RSV1 必须清除”

Question

我收到此错误“错误：无效的 WebSocket 帧：RSV1 必须清除”可能是什么问题？

我正在使用 socket.io 包通过以下代码连接到 Node.js。

let app = express();
const http = require("http").createServer(app);
const io = require("socket.io")(http, /*options*/);

io.on('connection', function (socket) {
  console.log('a user connected');
  socket.conn.on('upgrade', ()=>{
    const upgradedTransport = socket.conn.transport.name;    
  });

socket.conn.on('upgrade', ()=>{
    const upgradedTransport = socket.conn.transport.name;    
  });
socket.on('create or join', function (room) {...});
socket.on('ready', function (room) {...});
socket.on('candidate', function (event){...});
.....
.....
socket.on('hangup', function (room) {    
    socket.leave(room);
    socket.emit('hangup', room);
   
  });
});
});

这是我的 Nginx 配置，

map $http_upgrade $connection_upgrade {
default upgrade;
    '' close;
}

upstream websocket {
    server 127.0.0.1:1337;
}

server {
        server_name  mydomain.subdomain.com;
        root         /usr/share/nginx/html;

        include /etc/nginx/default.d/*.conf;
        underscores_in_headers on;

  location /socket.io/ {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass http://127.0.0.1:1337;
        # this magic is needed for WebSocket
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;

        }

location / {
        proxy_pass http://127.0.0.1:8094;
        }


    listen [::]:443 ssl ipv6only=on; 
    listen 443 ssl; 
    ssl_certificate ...
    ssl_certificate_key /etc/...; 
    include /etc/...;
    ssl_dhparam /etc/...;
}

 server {
    if ($host = mydomain.subdomain.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot


        listen       80;
        listen       [::]:80;
        server_name  mydomain.subdomain.com;
    return 404; 


}

向邮递员请求时，握手详情如下，

握手详情

Request URL: https://mydomain.subdomain.com/socket.io
Request Method: GET
Status Code: 101 Switching Protocols
Request Headers
Sec-WebSocket-Version: 13
Sec-WebSocket-Key: 3DlYbOFVRGepjPrOd92Zew==
Connection: Upgrade
Upgrade: websocket
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
Host: mydomain.subdomain.com

还有响应头，

Server: nginx/1.14.0 (Ubuntu)
Date: Tue, 10 May 2022 12:50:41 GMT
Connection: upgrade
Upgrade: websocket
Sec-WebSocket-Accept: FB8P5FMN8gPIsHjfRrrIoe+9+OI=

我收到此错误“错误：无效的 WebSocket 帧：RSV1 必须清除”可能是什么问题？谢谢你帮我。

Answer 1

您可以在请求标头中看到特定 WebSocket 扩展的设置 - 消息压缩：

Sec-WebSocket-Extensions: permessage-deflate; 我认为默认情况下，websocket 客户端会对消息使用压缩，但它接收到的数据帧不包含压缩位，因此会导致：

Invalid data frame: RSV1 must be clear 很可能是服务器中没有配置相关的压缩设置。因此，当您创建 WebSocket 服务器时，请尝试将以下选项传递给它：

let server = new Server({
    perMessageDeflate: {
        threshold: 2048, // defaults to 1024

        zlibDeflateOptions: {
        chunkSize: 8 * 1024, // defaults to 16 * 1024
        },

        zlibInflateOptions: {
        windowBits: 14, // defaults to 15
        memLevel: 7, // defaults to 8
        },

        clientNoContextTakeover: true, // defaults to negotiated value.
        serverNoContextTakeover: true, // defaults to negotiated value.
        serverMaxWindowBits: 10, // defaults to negotiated value.

        concurrencyLimit: 20, // defaults to 10
    },
});

您可能会看到错误随后就会消失。

Answer 2

好吧，我应用了这个，但现在我收到此错误：

无效的 WebSocket 帧：必须设置 FIN

这是时间表：

* WebSocket connection established
* Preparing request to ws://localhost:3000/chat/RELIANCE
* Current time is 2024-01-14T22:16:51.680Z
* Using HTTP 1.1

> GET /chat/RELIANCE HTTP/1.1
> user-agent: insomnia/8.5.1
> authorization: Bearer sometoken
> cookie: null;
> Sec-WebSocket-Version: 13
> Sec-WebSocket-Key: GpME3yEfzG4T+mLP9mLMWw==
> Connection: Upgrade
> Upgrade: websocket
> Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
> Host: localhost:3000

< HTTP/1.1 101 Switching Protocols
< upgrade: websocket
< connection: Upgrade
< sec-websocket-accept: g5pg3cR9XPLGJYwyDYCoV64O8i4=
< sec-websocket-extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover; server_max_window_bits=10

* Invalid WebSocket frame: FIN must be set