"Could not reconnect"

[Morritz]

• Web Browser:
• Local OS:
• Remote OS: FreeBSD
• Remote Architecture: Amd64
• code-server --version: 3.4.1 / 3.5.0

"Could not reconnect" error, I reinstalled code-server many times and I could not find solution for this error.
It seems to disconnect at the same point the terminal would have been loaded.

[code-asher]

Could you grab the extension host and code-server logs? https://github.com/cdr/code-server/blob/v3.5.0/doc/FAQ.md#how-do-i-debug-issues-with-code-server

[vnijs]

Just as an FYI. I got this same pop up lot with the current version of code server and so reverted to the previous release.

[code-asher]

Interesting, there have been a number of reports now that 3.5.0 has this problem while 3.4.1 doesn't. I'll take a look at the differences, maybe something will stand out.

[vnijs]

@code-asher You are not able to reproduce I assume? If you don't see anything I'll try to recreate a docker container that would demonstrate it happening regularly. Let me know.

[code-asher]

Correct, I haven't been able to reproduce yet. If you can recreate it in a Docker container that would be helpful!

[vnijs]

Having a hard time pinning this down but I think it happens predominately when I'm working with python files so I think there might be an interaction there. Packages used are the latest from market place.

I did create a docker file and the easiest way to launch code server from that container is to run the script in the attached zip file. The docker image is vnijs/rsm-msba-cdr and Code Server is started from JypyterLab on port 8989.
launch-rsm-msba-cdr.zip

Python libraries used:

VisualStudioExptTeam.vscodeintellicode-1.2.10.vsix
ms-python.python-2020.9.114305.vsix
ms-python.vscode-pylance-2020.10.0.vsix

The other packages used shown below.

CoenraadS.bracket-pair-colorizer-2-0.2.0.vsix
Ikuyadeu.r-1.4.6.vsix
RDebugger.r-debugger-0.3.1.vsix
REditorSupport.r-lsp-0.1.11.vsix
alefragnani.project-manager-11.3.0.vsix
christian-kohler.path-intellisense-2.3.0.vsix
eamodio.gitlens-10.2.2.vsix

[hanneshayashi]

Same issue here. Happens as soon as the window is loaded. Will probably revert back to 3.5.0 for now.
Edit: To clarify, this started happening after upgrading to 3.6.0 for me. 3.5.0 was fine.

[Talent30]

Hi, @hanneshayashi . I had the same issue after upgrade to 3.6.0. Resolved it after rebooting my machine.

[izewang]

Same Issue for me on both 3.5.0 & 3.6.0. And it seems that if I use a global VPN, then I can reconnect again. If turn off the VPN, I can only connect for the first time after rebooting, and cannot reconnect after refreshing the page.

I really need the bug fix in v3.6.0, so that I have to add my code-server host ip into my PAC file and let the signal go around the world and finally reach out to my server in the same city. :(

Another finding: I only need VPN to initialize the connecting. Then I can turn the VPN off and hit "reconnect".

[hanneshayashi]

Hi, @hanneshayashi . I had the same issue after upgrade to 3.6.0. Resolved it after rebooting my machine.

Well, what do you know, a reboot actually fixed it. Thanks! I don't usually reboot my dev machine after just a software update and I don't really understand why a reboot would be necessary, but you can't argue with results!

[vnijs]

The messages/issue is hard to pin down and I don't see anything in "code-server --log trace". It happens sometimes after I install an extension that needs a reload to start working. I can only tell that the error is about to happen the fact that BracketPairColorizer (version 1 because version 2 doesn't work with 3.5 or 3.6) doesn't kick in right away.

https://marketplace.visualstudio.com/items?itemName=CoenraadS.bracket-pair-colorizer

[vnijs]

Just tried out 3.6.1. "Cannot reconnect" seems to happen pretty much any time I click an icon in the left navigation bar now. Something about a "handshake timeout" (see below). The docker container I use is vnijs/rsm-msba with the following extensions: https://github.com/radiant-rstats/docker-vsix-dev

DevTools failed to load SourceMap: Could not load content for http://localhost:8989/vscode/static/62735da69466a444561ab9b1115dc7c4d496d455/opt/code-server/dist/pages/pages/vscode.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load SourceMap: Could not load content for chrome-extension://liecbddmkiiihnedobmlmillhodjkdmb/js/content.js.map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME
DevTools failed to load SourceMap: Could not load content for chrome-extension://liecbddmkiiihnedobmlmillhodjkdmb/js/intercom-link-expand-loader.js.map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME
abstractExtensionService.ts:836 Extension 'ms-python.python' uses PROPOSED API which is subject to change and removal without notice.
updateEnableProposedApi @ abstractExtensionService.ts:836
_checkEnableProposedApi @ abstractExtensionService.ts:582
_checkEnabledAndProposedAPI @ abstractExtensionService.ts:588
_scanAndHandleExtensions @ extensionService.ts:164
async function (async)
_scanAndHandleExtensions @ extensionService.ts:159
_initialize @ abstractExtensionService.ts:412
(anonymous) @ extensionService.ts:72
Promise.then (async)
k @ extensionService.ts:72
_createInstance @ instantiationService.ts:110
_createServiceInstance @ instantiationService.ts:215
_createServiceInstanceWithOwner @ instantiationService.ts:204
_createAndCacheServiceInstance @ instantiationService.ts:192
_getOrCreateServiceInstance @ instantiationService.ts:135
get @ instantiationService.ts:54
(anonymous) @ workbench.ts:135
invokeFunction @ instantiationService.ts:61
startup @ workbench.ts:131
open @ web.main.ts:96
async function (async)
open @ web.main.ts:75
t.main @ web.main.ts:352
t.create @ workbench.web.api.ts:481
(anonymous) @ workbench.ts:504
(anonymous) @ workbench.ts:405
t._invokeFactory @ loader.js:1129
t.complete @ loader.js:1139
s._onModuleComplete @ loader.js:1760
s._onModuleComplete @ loader.js:1772
s._resolve @ loader.js:1720
s.defineModule @ loader.js:1367
i @ loader.js:1649
l @ loader.js:2163
t._invokeFactory @ loader.js:1129
t.complete @ loader.js:1139
s._onModuleComplete @ loader.js:1760
s._onModuleComplete @ loader.js:1772
s._resolve @ loader.js:1720
s.defineModule @ loader.js:1367
n @ loader.js:1810
(anonymous) @ workbench.nls.js:7
TMScopeRegistry.ts:45 Overwriting grammar scope name to file mapping for scope source.r.
Old grammar file: vscode-remote://localhost:8989/opt/code-server/lib/vscode/extensions/r/syntaxes/r.tmLanguage.json.
New grammar file: vscode-remote://localhost:8989/home/jovyan/.rsm-msba/share/code-server/extensions/ikuyadeu.r-1.5.1/syntax/r.json
register @ TMScopeRegistry.ts:45
s @ TMGrammarFactory.ts:73
_getOrCreateGrammarFactory @ abstractTextMateService.ts:246
async function (async)
_getOrCreateGrammarFactory @ abstractTextMateService.ts:235
(anonymous) @ abstractTextMateService.ts:271
_registerDefinitionIfAvailable @ abstractTextMateService.ts:269
(anonymous) @ abstractTextMateService.ts:151
_handle @ extensionsRegistry.ts:141
acceptUsers @ extensionsRegistry.ts:132
_handleExtensionPoint @ abstractExtensionService.ts:694
_doHandleExtensionPoints @ abstractExtensionService.ts:640
_scanAndHandleExtensions @ extensionService.ts:194
async function (async)
_scanAndHandleExtensions @ extensionService.ts:159
_initialize @ abstractExtensionService.ts:412
(anonymous) @ extensionService.ts:72
Promise.then (async)
k @ extensionService.ts:72
_createInstance @ instantiationService.ts:110
_createServiceInstance @ instantiationService.ts:215
_createServiceInstanceWithOwner @ instantiationService.ts:204
_createAndCacheServiceInstance @ instantiationService.ts:192
_getOrCreateServiceInstance @ instantiationService.ts:135
get @ instantiationService.ts:54
(anonymous) @ workbench.ts:135
invokeFunction @ instantiationService.ts:61
startup @ workbench.ts:131
open @ web.main.ts:96
async function (async)
open @ web.main.ts:75
t.main @ web.main.ts:352
t.create @ workbench.web.api.ts:481
(anonymous) @ workbench.ts:504
(anonymous) @ workbench.ts:405
t._invokeFactory @ loader.js:1129
t.complete @ loader.js:1139
s._onModuleComplete @ loader.js:1760
s._onModuleComplete @ loader.js:1772
s._resolve @ loader.js:1720
s.defineModule @ loader.js:1367
i @ loader.js:1649
l @ loader.js:2163
t._invokeFactory @ loader.js:1129
t.complete @ loader.js:1139
s._onModuleComplete @ loader.js:1760
s._onModuleComplete @ loader.js:1772
s._resolve @ loader.js:1720
s.defineModule @ loader.js:1367
n @ loader.js:1810
(anonymous) @ workbench.nls.js:7
log.ts:197   ERR [remote-connection][ExtensionHost][81bbf…][initial][localhost:8989] the handshake took longer than 10 seconds. Error:
log.ts:197   ERR Error: handshake timeout
    at remoteAgentConnection.ts:118
log.ts:197   ERR [remote-connection] An error occurred in the very first connect attempt, it will be treated as a permanent error! Error:
log.ts:197   ERR Error: handshake timeout
    at remoteAgentConnection.ts:118
extensionHostManager.ts:74 Error received from starting extension host
(anonymous) @ extensionHostManager.ts:74
Promise.then (async)
e @ extensionHostManager.ts:68
_createInstance @ instantiationService.ts:110
createInstance @ instantiationService.ts:76
(anonymous) @ abstractExtensionService.ts:447
_startExtensionHosts @ abstractExtensionService.ts:446
_initialize @ abstractExtensionService.ts:410
(anonymous) @ extensionService.ts:72
Promise.then (async)
k @ extensionService.ts:72
_createInstance @ instantiationService.ts:110
_createServiceInstance @ instantiationService.ts:215
_createServiceInstanceWithOwner @ instantiationService.ts:204
_createAndCacheServiceInstance @ instantiationService.ts:192
_getOrCreateServiceInstance @ instantiationService.ts:135
get @ instantiationService.ts:54
(anonymous) @ workbench.ts:135
invokeFunction @ instantiationService.ts:61
startup @ workbench.ts:131
open @ web.main.ts:96
async function (async)
open @ web.main.ts:75
t.main @ web.main.ts:352
t.create @ workbench.web.api.ts:481
(anonymous) @ workbench.ts:504
(anonymous) @ workbench.ts:405
t._invokeFactory @ loader.js:1129
t.complete @ loader.js:1139
s._onModuleComplete @ loader.js:1760
s._onModuleComplete @ loader.js:1772
s._resolve @ loader.js:1720
s.defineModule @ loader.js:1367
i @ loader.js:1649
l @ loader.js:2163
t._invokeFactory @ loader.js:1129
t.complete @ loader.js:1139
s._onModuleComplete @ loader.js:1760
s._onModuleComplete @ loader.js:1772
s._resolve @ loader.js:1720
s.defineModule @ loader.js:1367
n @ loader.js:1810
(anonymous) @ workbench.nls.js:7
extensionHostManager.ts:75 Error: handshake timeout
    at remoteAgentConnection.ts:118
(anonymous) @ extensionHostManager.ts:75
Promise.then (async)
e @ extensionHostManager.ts:68
_createInstance @ instantiationService.ts:110
createInstance @ instantiationService.ts:76
(anonymous) @ abstractExtensionService.ts:447
_startExtensionHosts @ abstractExtensionService.ts:446
_initialize @ abstractExtensionService.ts:410
(anonymous) @ extensionService.ts:72
Promise.then (async)
k @ extensionService.ts:72
_createInstance @ instantiationService.ts:110
_createServiceInstance @ instantiationService.ts:215
_createServiceInstanceWithOwner @ instantiationService.ts:204
_createAndCacheServiceInstance @ instantiationService.ts:192
_getOrCreateServiceInstance @ instantiationService.ts:135
get @ instantiationService.ts:54
(anonymous) @ workbench.ts:135
invokeFunction @ instantiationService.ts:61
startup @ workbench.ts:131
open @ web.main.ts:96
async function (async)
open @ web.main.ts:75
t.main @ web.main.ts:352
t.create @ workbench.web.api.ts:481
(anonymous) @ workbench.ts:504
(anonymous) @ workbench.ts:405
t._invokeFactory @ loader.js:1129
t.complete @ loader.js:1139
s._onModuleComplete @ loader.js:1760
s._onModuleComplete @ loader.js:1772
s._resolve @ loader.js:1720
s.defineModule @ loader.js:1367
i @ loader.js:1649
l @ loader.js:2163
t._invokeFactory @ loader.js:1129
t.complete @ loader.js:1139
s._onModuleComplete @ loader.js:1760
s._onModuleComplete @ loader.js:1772
s._resolve @ loader.js:1720
s.defineModule @ loader.js:1367
n @ loader.js:1810
(anonymous) @ workbench.nls.js:7

[vnijs]

@code-asher FYI I have been playing around with 3.6.2 for a few hours now in a docker container. I haven't seen any "reconnect" issues! Also, all extensions I have tried (incl python) seem to work! Well, except for Bracket-pair-colorizer-2 that is :)

[code-asher]

Yes!! I'm relieved to hear that. Thank you for testing it out. Hopefully I'll have time to fix the bracket colorizer plugin soon (most likely it will be next week).

[code-asher]

Closing for now, if anyone sees more connection failures please let me know. Will use #2197 to track the bracket plugin issue.