Kotlin Language Client client: couldn't create connection to server.

[Emandac]

every time i open a file ending .kt this bug happened to me
it was working just fine a day a go
maybe because of a vscode update but idk

version JDK: java 17.0.12 2024-07-16 LTS

version of kotlin: 2.0.0-release-341 (JRE 17.0.12+8-LTS-286)

version extenstion : 0.2.35

Error message:
[Error - 9:46:46 PM] Kotlin Language Client client: couldn't create connection to server.
Error: spawn EINVAL
at ChildProcess.spawn (node:internal/child_process:421:11)
at Object.spawn (node:child_process:799:9)
at c:\Users\accompagnant.vscode\extensions\fwcd.kotlin-0.2.35\dist\extension.js:2:763567
at async k.createConnection (c:\Users\accompagnant.vscode\extensions\fwcd.kotlin-0.2.35\dist\extension.js:2:602530)
at async k.start (c:\Users\accompagnant.vscode\extensions\fwcd.kotlin-0.2.35\dist\extension.js:2:593505)

[saintfts]

i have the same problem, any solution?

[othercorey]

I think this started happening for me the July 2024 (1.92) vscode update.

[willnode]

This is could be because of https://nodejs.org/en/blog/vulnerability/april-2024-security-releases-2 exactly in

vscode-kotlin/src/languageSetup.ts

Line 250 in a2b912d

const proc = child_process.spawn(options.startScriptPath, ["--tcpClientPort", tcpPort]);

[othercorey]

@fwcd Looks like the vscode team opened an issue about this change:

#153

[projectGuy7]

This is could be because of https://nodejs.org/en/blog/vulnerability/april-2024-security-releases-2 exactly in

vscode-kotlin/src/languageSetup.ts

Line 250 in a2b912d

const proc = child_process.spawn(options.startScriptPath, ["--tcpClientPort", tcpPort]);

Is that languageSetup.ts located in extension's source files?
If I understand right, we need to add "shell : true" to that method, so it works correctly, but I have a huge trouble with finding that file

[onixldlc]

im not saying editing the extension file is impossible... but i think it would be easier to just fork it or find a fork with the fix then copy the js file from the build to your extension folder since the js is jumbbled, altho if you are stubborn enough like me or cant wait and want to change it now... you can do it too, like this:

if you are in windows you can go to (in linux its probably ~/.vscode but cmiiw)

%USERPROFILE%.vscode\extensions\fwcd.kotlin-0.2.35\dist

then look for

,["--tcpClientPort",t]
// change it to
,["--tcpClientPort",t],{shell:true}

but not only this you will have to add c.shell=true where where ever you found .spawn( like so

and i would suggest using any lightweight text editor like vim nano or notepad (i tried using vscode and it lagged pretty hard for every letter i pressed, tbf i had js extension so maybe disable it ? idk didnt try)

[Alrz7]

i have the same problem for 2 days

[A-Boring-Square]

Here is the patched file
PATCH.zip

[Emandac]

Here is the patched file PATCH.zip

Where do I put the extracted files ?

[A-Boring-Square]

%USERPROFILE%.vscode\extensions\fwcd.kotlin-0.2.35\dist this will replace the js file

[Emandac]

%USERPROFILE%.vscode\extensions\fwcd.kotlin-0.2.35\dist this will replace the js file

Thank 😊

[RowdyRushya]

@A-Boring-Square You are the real GOAT

[A-Boring-Square]

Your welcome what's funny is I don't even use this extension anymore

[halotroop2288]

Here is the patched file PATCH.zip

Why not make a pull request and link it here if you know how to fix it?

It works, by the way.