zlib error with websocket compression enabled

[sweet-mentat]

OS/Web Information

• Web Browser: Chrome Version 89.0.4389.90 (Official Build) (32-bit)
• Local OS: Windows Server 2016 Datacenter
• Remote OS: Ubuntu 18.04.5
• Remote Architecture: Amazon EC2
• code-server --version: v3.9.2

config.yaml:

Steps to Reproduce

1. systemctl --user start code-server
2. log into it from browser
3. config.yaml at ~/.config/code-server/
   bind-addr: 127.0.0.1:9001
   auth: none
   cert: /usr/lib/code-server/cert.pem
   cert-key: /usr/lib/code-server/key.pem

Expected

journalctl:
Apr 01 15:16:16 ip-10---* systemd[11951]: Started code-server.
Apr 01 15:16:18 ip-10---* code-server[13218]: [2021-04-01T15:16:18.691Z] info code-server 3.8.1 41ad0c0
Apr 01 15:16:18 ip-10---* code-server[13218]: [2021-04-01T15:16:18.694Z] info Using user-data-dir ~/.local/share/code-server
Apr 01 15:16:18 ip-10---* code-server[13218]: [2021-04-01T15:16:18.734Z] info Using config file ~/.config/code-server/config.yaml
Apr 01 15:16:18 ip-10---* code-server[13218]: [2021-04-01T15:16:18.734Z] info HTTP server listening on http://127.0.0.1:9001
Apr 01 15:16:18 ip-10---* code-server[13218]: [2021-04-01T15:16:18.734Z] info - Authentication is disabled
Apr 01 15:16:18 ip-10---* code-server[13218]: [2021-04-01T15:16:18.734Z] info - Using certificate for HTTPS: /usr/lib/code-server/cert.pem

Actual

journalctl:
Mar 31 21:12:22 ip-10---* systemd[8572]: Started code-server.
Mar 31 21:12:23 ip-10---* code-server[26055]: [2021-03-31T21:12:23.935Z] info code-server 3.9.2 109d2ce
Mar 31 21:12:23 ip-10---* code-server[26055]: [2021-03-31T21:12:23.937Z] info Using user-data-dir ~/.local/share/code-server
Mar 31 21:12:23 ip-10---* code-server[26055]: [2021-03-31T21:12:23.970Z] info Using config file ~/.config/code-server/config.yaml
Mar 31 21:12:23 ip-10---* code-server[26055]: [2021-03-31T21:12:23.970Z] info HTTP server listening on http://127.0.0.1:9001
Mar 31 21:12:23 ip-10---* code-server[26055]: [2021-03-31T21:12:23.970Z] info - Authentication is disabled
Mar 31 21:12:23 ip-10---* code-server[26055]: [2021-03-31T21:12:23.970Z] info - Using certificate for HTTPS: /usr/lib/code-server/cert.pem
Mar 31 21:13:08 ip-10---* code-server[26055]: Error: invalid distance too far back
Mar 31 21:13:08 ip-10---* code-server[26055]: at Zlib.zlibOnError [as onerror] (zlib.js:180:17) {
Mar 31 21:13:08 ip-10---* code-server[26055]: errno: -3,
Mar 31 21:13:08 ip-10---* code-server[26055]: code: 'Z_DATA_ERROR'
Mar 31 21:13:08 ip-10---* code-server[26055]: }
Mar 31 21:13:08 ip-10---* code-server[26055]: [2021-03-31T21:13:08.418Z] warn vscode invalid distance too far back
Mar 31 21:13:18 ip-10---* code-server[26055]: [2021-03-31T21:13:18.326Z] error vscode Handshake timed out {"token":"7310faa7-c169-4ed7-9f78-73d1af8bbedf"}

Notes

This issue can be reproduced in VS Code: No

[sweet-mentat]

In the browser, it hangs, then says that it cannot reconnect.

[lovetodream]

I have the same issues on a Raspberry Pi 4 with Debian using standard password authentication.

[gbruno16]

Same issues on Termux for Android

[jsjoeio]

@gbruno16 are you able to post reproduction steps? Might help with debugging as I have an Android I can test on.

[gbruno16]

I followed exactly the steps in https://github.com/cdr/code-server/blob/main/docs/install.md#termux on a fresh installation of Termux 0.108.
My device is a Huawei Matepad 10.4 (Android 10). Code server starts but after some seconds it disconnects and gives the same error reported above

[jsjoeio]

Okay, thanks for the notes! Can you try running with code-server --log debug and posting the logs here?

[gbruno16]

I hope this is what you asked for:

[2021-04-03T09:27:04.844Z] info code-server 3.9.2 109d2ce
[2021-04-03T09:27:04.846Z] info Using user-data-dir ~/.local/share/code-server
[2021-04-03T09:27:04.872Z] info Using config file ~/.config/code-server/config.yaml
[2021-04-03T09:27:04.872Z] info HTTP server listening on http://127.0.0.1:8080
[2021-04-03T09:27:04.872Z] info - Authentication is enabled
[2021-04-03T09:27:04.872Z] info - Using password from ~/.config/code-server/config.yaml
[2021-04-03T09:27:04.872Z] info - Not serving HTTPS
Error: invalid distance too far back
at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
errno: -3,
code: 'Z_DATA_ERROR'
}
[2021-04-03T09:27:12.510Z] warn vscode invalid distance too far back
Error: invalid distance too far back
at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
errno: -3,
code: 'Z_DATA_ERROR'
}
[2021-04-03T09:27:21.239Z] warn vscode invalid distance too far back
[2021-04-03T09:27:22.481Z] error vscode Handshake timed out {"token":"6f236eec-8108-4bc6-a4b9-f16930416b93"}
Error: invalid distance too far back
at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
errno: -3,
code: 'Z_DATA_ERROR'
}
[2021-04-03T09:27:26.265Z] warn vscode invalid distance too far back
[2021-04-03T09:27:31.212Z] error vscode Handshake timed out {"token":"bda65549-df28-488d-9e7a-7891255812d9"}
ERR /data/data/com.termux/files/home/.local/share/code-server/extensions [Error: ENOENT: no such file or directory, scandir '/data/data/com.termux/files/home/.local/share/code-server/extensions'] {
errno: -2,
code: 'ENOENT',
syscall: 'scandir',
path: '/data/data/com.termux/files/home/.local/share/code-server/extensions'
}
Error: invalid distance too far back
at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
errno: -3,
code: 'Z_DATA_ERROR'
}
[2021-04-03T09:27:33.999Z] warn vscode invalid distance too far back
[2021-04-03T09:27:36.072Z] error vscode Handshake timed out {"token":"c57e8aab-c55d-4194-ac89-ce4c618cad4b"}
[2021-04-03T09:27:43.652Z] error vscode Handshake timed out {"token":"2dafe5e3-5051-43b2-b015-119531d1c85d"}
ERR /data/data/com.termux/files/home/.local/share/code-server/extensions [Error: ENOENT: no such file or directory, scandir '/data/data/com.termux/files/home/.local/share/code-server/extensions'] {
errno: -2,
code: 'ENOENT',
syscall: 'scandir',
path: '/data/data/com.termux/files/home/.local/share/code-server/extensions'
}

[jsjoeio]

Perfect! Exactly what we needed. I've seen this same issue so you're not alone. Thanks for posting the logs! We'll look into this.

[EdgarAlonsoPerez]

Same problem here.
local device: raspberry Pi 3
remote device 1: Ipad (ipadOs 14.4.2)
Browsers that i used to test: Brave (Version 1.23.1 (21.2.24.16)), Safari, Chrome
code-server version: 3.9.2

[jsjoeio]

Hi can you try upgrade to 3.9.3 and letting us know if you're still experiencing the same issue?

Feel free to post in the release discussion as well.

[lovetodream]

The issue is resolved after the update, at least for me. 👍

[sweet-mentat]

I updated, and received these errors in journalctl:
Apr 09 16:59:08 ip-10- systemd[10796]: Started code-server.
Apr 09 16:59:09 ip-10 code-server[30652]: [2021-04-09T16:59:09.769Z] info code-server 3.9.3 fe2dc2d
Apr 09 16:59:09 ip-10- code-server[30652]: [2021-04-09T16:59:09.772Z] info Using user-data-dir ~/.local/share/code-server
Apr 09 16:59:09 ip-10- code-server[30652]: [2021-04-09T16:59:09.838Z] info Using config file ~/.config/code-server/config.yaml
Apr 09 16:59:09 ip-10- code-server[30652]: [2021-04-09T16:59:09.838Z] info HTTP server listening on http://127.0.0.1:9001
Apr 09 16:59:09 ip-10- code-server[30652]: [2021-04-09T16:59:09.838Z] info - Authentication is disabled
Apr 09 16:59:09 ip-10- code-server[30652]: [2021-04-09T16:59:09.838Z] info - Using certificate for HTTPS: /usr/lib/code-server/cert.pem
Apr 09 16:59:16 ip-10- code-server[30652]: [2021-04-09T16:59:16.647Z] error vscode is not running Error: vscode is not running
Apr 09 16:59:16 ip-10- code-server[30652]: at VscodeProvider.send (/usr/lib/code-server/out/node/vscode.js:206:19)
Apr 09 16:59:16 ip-10- code-server[30652]: at VscodeProvider. (/usr/lib/code-server/out/node/vscode.js:198:30)
Apr 09 16:59:16 ip-10- code-server[30652]: at step (/usr/lib/code-server/out/node/vscode.js:63:23)
Apr 09 16:59:16 ip-10- code-server[30652]: at Object.next (/usr/lib/code-server/out/node/vscode.js:44:53)
Apr 09 16:59:16 ip-10- code-server[30652]: at fulfilled (/usr/lib/code-server/out/node/vscode.js:35:58)
Apr 09 16:59:16 ip-10- code-server[30652]: at processTicksAndRejections (internal/process/task_queues.js:97:5)
Apr 09 16:59:16 ip-10- code-server[30652]: [2021-04-09T16:59:16.742Z] error vscode is not running Error: vscode is not running
Apr 09 16:59:16 ip-10- code-server[30652]: at VscodeProvider.send (/usr/lib/code-server/out/node/vscode.js:206:19)
Apr 09 16:59:16 ip-10- code-server[30652]: at VscodeProvider. (/usr/lib/code-server/out/node/vscode.js:198:30)
Apr 09 16:59:16 ip-10- code-server[30652]: at step (/usr/lib/code-server/out/node/vscode.js:63:23)
Apr 09 16:59:16 ip-10- code-server[30652]: at Object.next (/usr/lib/code-server/out/node/vscode.js:44:53)
Apr 09 16:59:16 ip-10- code-server[30652]: at fulfilled (/usr/lib/code-server/out/node/vscode.js:35:58)
Apr 09 16:59:16 ip-10- code-server[30652]: at processTicksAndRejections (internal/process/task_queues.js:97:5)
Apr 09 16:59:25 ip-10- code-server[30652]: [2021-04-09T16:59:25.628Z] warn vscode Version mismatch (41ad0c0 instead of fe2dc2d)
Apr 09 16:59:26 ip-10- code-server[30652]: Error: invalid distance too far back
Apr 09 16:59:26 ip-10- code-server[30652]: at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
Apr 09 16:59:26 ip-10- code-server[30652]: errno: -3,
Apr 09 16:59:26 ip-10- code-server[30652]: code: 'Z_DATA_ERROR'
Apr 09 16:59:26 ip-10- code-server[30652]: }
Apr 09 16:59:26 ip-10- code-server[30652]: [2021-04-09T16:59:26.017Z] warn vscode invalid distance too far back
Apr 09 16:59:30 ip-10- code-server[30652]: [2021-04-09T16:59:30.711Z] warn vscode Version mismatch (41ad0c0 instead of fe2dc2d)
Apr 09 16:59:31 ip-10- code-server[30652]: [2021-04-09T16:59:31.609Z] warn vscode Version mismatch (41ad0c0 instead of fe2dc2d)
Apr 09 16:59:35 ip-10- code-server[30652]: [2021-04-09T16:59:35.992Z] error vscode Handshake timed out {"token":"9eb85fc6-f60b-47b5-973d-afb81ea6ae0d"}

So I updated vscode to 1.55.1-1617808414

Now I'm seeing these same errors:
Apr 09 17:04:49 ip-10 systemd[10796]: Started code-server.
Apr 09 17:04:50 ip-10 code-server[31198]: [2021-04-09T17:04:50.519Z] info code-server 3.9.3 fe2dc2d
Apr 09 17:04:50 ip-10 code-server[31198]: [2021-04-09T17:04:50.522Z] info Using user-data-dir ~/.local/share/code-server
Apr 09 17:04:50 ip-10 code-server[31198]: [2021-04-09T17:04:50.554Z] info Using config file ~/.config/code-server/config.yaml
Apr 09 17:04:50 ip-10 code-server[31198]: [2021-04-09T17:04:50.554Z] info HTTP server listening on http://127.0.0.1:9001
Apr 09 17:04:50 ip-10 code-server[31198]: [2021-04-09T17:04:50.554Z] info - Authentication is disabled
Apr 09 17:04:50 ip-10 code-server[31198]: [2021-04-09T17:04:50.554Z] info - Using certificate for HTTPS: /usr/lib/code-server/cert.pem
Apr 09 17:05:07 ip-10- code-server[31198]: Error: invalid distance too far back
Apr 09 17:05:07 ip-10- code-server[31198]: at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
Apr 09 17:05:07 ip-10- code-server[31198]: errno: -3,
Apr 09 17:05:07 ip-10- code-server[31198]: code: 'Z_DATA_ERROR'
Apr 09 17:05:07 ip-10- code-server[31198]: }
Apr 09 17:05:07 ip-10- code-server[31198]: [2021-04-09T17:05:07.305Z] warn vscode invalid distance too far back
Apr 09 17:05:17 ip-10- code-server[31198]: [2021-04-09T17:05:17.295Z] error vscode Handshake timed out {"token":"9866a080-0504-4e2e-a8c9-aa67b80da9d6"}

Also, code server version 3.9.1 works...

[jsjoeio]

Interesting! Thanks for confirming @lovetodream

Thanks for the logs @sweet-mentat - we'll have to dig into this a bit more.

[jwh9456]

I'm getting the same issue,

4월 25 16:40:32 localhost.localdomain code-server[22661]: }
4월 25 16:40:32 localhost.localdomain code-server[22661]: [2021-04-25T07:40:32.905Z] warn vscode invalid distance too far back
4월 25 16:40:37 localhost.localdomain code-server[22661]: Error: invalid distance too far back
4월 25 16:40:37 localhost.localdomain code-server[22661]: at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
4월 25 16:40:37 localhost.localdomain code-server[22661]: errno: -3,
4월 25 16:40:37 localhost.localdomain code-server[22661]: code: 'Z_DATA_ERROR'
4월 25 16:40:37 localhost.localdomain code-server[22661]: }
4월 25 16:40:37 localhost.localdomain code-server[22661]: [2021-04-25T07:40:37.081Z] warn vscode invalid distance too far back
4월 25 16:40:42 localhost.localdomain code-server[22661]: [2021-04-25T07:40:42.873Z] error vscode Handshake timed out {"token":"5bdfbd05-25d1-4393-b17d-a9bfa576d4c0"}
4월 25 16:40:46 localhost.localdomain code-server[22661]: [2021-04-25T07:40:46.988Z] error vscode Handshake timed out {"token":"1fc5665a-a7f0-4f78-ad1a-37d5f7528314"}

I'm using SBC, Udoo X86 advanced with additional SSD, just on eMMC.
CentOS for OS.
I'm suspecting on I/O...

[julpod]

Same here

[2021-04-30T18:01:15.424Z] warn  vscode Socket is closed
[2021-04-30T18:01:15.432Z] warn  vscode Socket is closed
[2021-04-30T18:01:15.447Z] warn  vscode Socket is closed
[2021-04-30T18:01:35.569Z] warn  vscode Socket is closed
[2021-04-30T18:05:21.106Z] warn  vscode Socket is closed
[2021-04-30T18:05:21.147Z] warn  vscode Socket is closed
[2021-04-30T18:13:39.670Z] warn  vscode Socket is closed
[2021-04-30T18:13:39.726Z] warn  vscode Socket is closed
[2021-04-30T18:13:39.726Z] warn  vscode Socket is closed
[2021-04-30T18:21:52.239Z] warn  vscode Socket is closed
[2021-04-30T18:21:52.290Z] warn  vscode Socket is closed
[2021-04-30T18:21:52.326Z] warn  vscode Socket is closed
Error: invalid distance too far back
    at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
  errno: -3,
  code: 'Z_DATA_ERROR'
}
[2021-04-30T19:11:45.236Z] warn  vscode invalid distance too far back
Error: invalid distance too far back
    at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
  errno: -3,
  code: 'Z_DATA_ERROR'
}
[2021-04-30T19:11:45.242Z] warn  vscode invalid distance too far back
[2021-04-30T19:11:45.297Z] warn  vscode Socket is closed
[2021-04-30T19:11:55.224Z] error vscode Handshake timed out {"token":"e663c03e-2467-4273-871a-114f8ff8f2ef"}
[2021-04-30T19:11:55.238Z] error vscode Handshake timed out {"token":"5260062d-86f6-4817-86a3-b0c614f32287"}
[2021-04-30T19:12:05.708Z] warn  vscode Socket is closed
[2021-04-30T19:21:39.486Z] warn  vscode Socket is closed
[2021-04-30T20:22:13.620Z] warn  vscode Socket is closed
[2021-04-30T20:41:02.546Z] warn  vscode Socket is closed
Error: invalid distance too far back
    at Zlib.zlibOnError [as onerror] (zlib.js:182:17) {
  errno: -3,
  code: 'Z_DATA_ERROR'
}
[2021-04-30T20:49:34.521Z] warn  vscode invalid distance too far back
[2021-04-30T20:49:44.517Z] error vscode Handshake timed out {"token":"e225145c-f283-4221-a82d-62039fb89031"}

Running on k3s from the codercom/code-server:3.9.3 docker image.

[code-asher]

Just FYI for the next release we will be toggling websocket compression off by default so hopefully this resolves it for everyone. If not then the problem is something else.

[GirlBossRush]

@code-asher @jsjoeio I believe this issue will be resolved in the vscode fork. While it’s currently disabled, zlib compression does appear to work in local testing if the configuration is negotiated by the client.

[jsjoeio]

That's awesome to hear!

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no activity occurs in the next 5 days.