blocks|key|1109400|text|这是我的错误，只是我用socket.io初始化了两次服务器，这导致了问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1109401|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

well it was my mistake only i was initializing the server with socket.io twice which was causing the issue

blocks|key|1109414|text|在服务器和客户端上使用相同版本的socket.io和socket.io-client。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1109415|entityMap^0|G|9|Q|G|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

Use the same version of <code>socket.io</code> and <code>socket.io-client</code> on both server and client.

blocks|key|1109422|text|我目前在使用socket.io-client.时遇到了同样的问题我按照下面的指示解决了我的问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1109423|您可以尝试将opts.transports设置为仅在客户端中使用websocket：|1109424|io.connect(url,+{+transports:+['websocket']+});+//+default+is+['polling',+'websocket']|code-block|syntax|javascript|1109425|参考文献：https://github.com/socketio/socket.io-client/issues/1097#issuecomment-301301030|1109426|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/socketio/socket.io-client/issues/1097#issuecomment-301301030^0|6|G|0|0|0|5|27|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|O|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

I'm currently having the same issue when using socket.io-client. I've solved my problem by following the directions below.

You can try setting opts.transports to only websocket in client:

<pre><code>io.connect(url, { transports: ['websocket'] }); // default is ['polling', 'websocket']
</code></pre>

Ref: <a href="https://github.com/socketio/socket.io-client/issues/1097#issuecomment-301301030" rel="nofollow noreferrer">https://github.com/socketio/socket.io-client/issues/1097#issuecomment-301301030</a>

blocks|key|2699307|text|更改了socket以使用它的独立服务器，它为我工作。最初将其添加到由express创建的服务器上。这段代码解决了问题..。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2699308|​|2699309|const+io+=+require("socket.io")();

//listening+socket+io+on+different+port
io.listen(4000);|code-block|syntax|javascript|2699310|2699311|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|K|$]]

Changed socket io to use its standalone server and it worked for me. Initially added it to server created by express.
This code fixed the problem..
<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-html lang-html prettyprint-override"><code>const io = require("socket.io")();

//listening socket io on different port
io.listen(4000);</code></pre>
</div>
</div>

blocks|key|1112924|text|对我来说，答案是我连接的客户端是版本2，服务器正在运行版本4。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1112925|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

For me the answer was that I was connecting with a client that was version 2 and the server was running version 4. As <a href="https://socket.io/docs/v4/client-installation/" rel="nofollow noreferrer">per the docs</a> I had to enable <code>allowEIO3</code> on the server

blocks|key|984805|text|我遇到的问题是，当我使用create+app和"npm运行启动“运行它时，在开发过程中获得实时刷新本地版本，默认情况下使用带有/ws路径的websocket。这与我的应用程序也在使用这条路径相冲突。因此，当您将setupProxy.js与http中间件一起使用时，它将两者都转发到api服务器，这将导致无效的帧头。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|984806|解决方案是在web应用程序中，将websocket路由改为其他类似于/websocket的路由，在setupProxy.js中这样设置：|984807|const+{+createProxyMiddleware+}+=+require('http-proxy-middleware');

module.exports+=+function(app)+{
++++app.use(
++++++++//+Do+not+use+`/ws`+as+it+conflicts+with+create-react-app's+hotrefresh+socket.
++++++++createProxyMiddleware('/websocket',+{
++++++++++++target:+'http://localhost:3000',
++++++++++++ws:+true,
++++++++++++changeOrigin:+true,
++++++++})
++++);
};|code-block|syntax|javascript|984808|entityMap^0|1R|3|2X|D|0|Y|A|1D|D|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|N|$]]

Problem I had was when using create-react-app and running it with &quot;npm run start&quot; to get the live refresh local version during development it uses by default a websocket with the <code>/ws</code> path. This conflicted with my app that was also using this path. So when you use the <code>setupProxy.js</code> with http-proxy-middleware it was forwarding both to the api server, which caused the invalid frame headers.
The solution was in the web app change the websocket route to something else like <code>/websocket</code> instead and in <code>setupProxy.js</code> set it up like this:
<pre class="lang-js prettyprint-override"><code>const { createProxyMiddleware } = require('http-proxy-middleware');

module.exports = function(app) {
 app.use(
 // Do not use `/ws` as it conflicts with create-react-app's hotrefresh socket.
 createProxyMiddleware('/websocket', {
 target: 'http://localhost:3000',
 ws: true,
 changeOrigin: true,
 })
 );
};
</code></pre>

I am trying to make a real time application. I am using NodeJS as a server and Socket.IO, to achieve my real time functionality.

The problem is I am getting error as:

<pre class="lang-none prettyprint-override"><code> WebSocket connection to 'wss://localhost:1234/socket.io/?EIO=3&amp;transport=websocket' failed: Invalid frame header
</code></pre>

I tried many things, like changing https to http, lowering the Socket.IO version, etc., but nothing worked for me. Please help me with the cause of the problem, so that I can pinpoint the error in my application. I don't want to go for other COMET protocols.

Invalid frame header

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试做一个实时的应用程序。我使用NodeJS作为服务器和Socket.IO来实现我的实时功能。问题是，我收到了错误，因为： WebSocket connection to 'wss://localhost:1234/socket.io/?EIO=3&transport=websocket' failed: Inv...

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