Error: Invalid WebSocket frame: invalid UTF-8 sequence using Node 22.7

[st3ffgv4]

Is there an existing issue for this?

• I've searched for any related issues and avoided creating a duplicate issue.

Description

Yesterday i've updated my client to nodejs 22.7.0 and it started to give this error after a while:

Error: Invalid WebSocket frame: invalid UTF-8 sequence
at Receiver.dataMessage (/root/b-core-mongo/node_modules/ws/lib/receiver.js:583:28)
at /root/b-core-mongo/node_modules/ws/lib/receiver.js:530:12
at /root/b-core-mongo/node_modules/ws/lib/permessage-deflate.js:309:9
at /root/b-core-mongo/node_modules/ws/lib/permessage-deflate.js:392:7
at afterWrite (node:internal/streams/writable:708:5)
at onwrite (node:internal/streams/writable:686:7)
at Zlib.cb (node:internal/streams/transform:191:7)
at Zlib.processCallback (node:zlib:632:8) {
code: 'WS_ERR_INVALID_UTF8',
[Symbol(status-code)]: 1007
}

My client configuration is

new WebSocket(
      `ws://${config.get("websocket.server.endpoint")}:${config.get(
        "websocket.server.port"
      )}`,
      {
        headers: {
          "x-bnode-name":
            process.env.BNODE_INSTANCE_NAME ?? os.hostname() ?? "test",
          "x-bnode-version": process.env.npm_package_version,
        },
      }
    );

My server configuration is:

new WebSocketServer({
      port: this.port,
      perMessageDeflate: {
        zlibDeflateOptions: {
          // See zlib defaults.
          chunkSize: 1024,
          memLevel: 7,
          level: 3,
        },
        zlibInflateOptions: {
          chunkSize: 10 * 1024,
        },
        // Other options settable:
        clientNoContextTakeover: true, // Defaults to negotiated value.
        serverNoContextTakeover: true, // Defaults to negotiated value.
        serverMaxWindowBits: 10, // Defaults to negotiated value.
        // Below options specified as default values.
        concurrencyLimit: 10, // Limits zlib concurrency for perf.
        threshold: 1024, // Size (in bytes) below which messages
        // should not be compressed if context takeover is disabled.
      },
    });

Bufferutil installed.
With node 22.6.0 all works well.
One thing that i can say is that i send lot of json strings.

ws version

8.18.0

Node.js Version

22.7.0

System

OS: Linux 6.8 Ubuntu 24.04.1 LTS 24.04.1 LTS (Noble Numbat)
CPU: (12) x64 Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
Memory: 12.68 GB / 15.28 GB
Container: Yes
Shell: 5.2.21 - /bin/bash

Expected result

no errors thrown

Actual result

Error: Invalid WebSocket frame: invalid UTF-8 sequence
at Receiver.dataMessage (/root/b-core-mongo/node_modules/ws/lib/receiver.js:583:28)
at /root/b-core-mongo/node_modules/ws/lib/receiver.js:530:12
at /root/b-core-mongo/node_modules/ws/lib/permessage-deflate.js:309:9
at /root/b-core-mongo/node_modules/ws/lib/permessage-deflate.js:392:7
at afterWrite (node:internal/streams/writable:708:5)
at onwrite (node:internal/streams/writable:686:7)
at Zlib.cb (node:internal/streams/transform:191:7)
at Zlib.processCallback (node:zlib:632:8) {
code: 'WS_ERR_INVALID_UTF8',
[Symbol(status-code)]: 1007
}

Attachments

No response

[lpinca]

The error is self-explanatory. The peer is receiving invalid UTF-8 but it very unlikely to be a ws issue as nothing changed. See nodejs/node#54543.

[lpinca]

This should be fixed in Node.js 22.8.0.

[st3ffgv4]

Yes fixed, thanks