VSCode protocol configurationDone/launch order

[adospace]

According to official specifications (https://microsoft.github.io/debug-adapter-protocol/overview) debugger should accept first 'configurationDone' request and then 'launch' request.

From my tests seems that I need to send the 'launch' request before 'configurationDone' request to correctly start the debugger.

This is the sequence of configurationDone first and getting an error:

-> {"command":"initialize","seq":1,"type":"Request"} <- {"body":{},"event":"initialized","seq":1,"type":"event"} <- {"body":{"supportTerminateDebuggee":true,"supportsConditionalBreakpoints":true,"supportsConfigurationDoneRequest":true},"command":"initialize","request_seq":1,"seq":2,"success":true,"type":"response"} -> {"command":"configurationDone","seq":2,"type":"Request"} <- {"command":"configurationDone","message":"Failed command 'configurationDone' : 0x80004005","request_seq":2,"seq":3,"success":false,"type":"response"} -> {"arguments":{},"command":"launch","seq":3,"type":"Request"} <- {"body":{},"command":"launch","request_seq":3,"seq":4,"success":true,"type":"response"}

while sending 'launch' before 'configurationDone' works fine:

-> {"command":"initialize","seq":1,"type":"Request"} <- {"body":{},"event":"initialized","seq":1,"type":"event"} <- {"body":{"supportTerminateDebuggee":true,"supportsConditionalBreakpoints":true,"supportsConfigurationDoneRequest":true},"command":"initialize","request_seq":1,"seq":2,"success":true,"type":"response"} {"arguments":{},"command":"launch","seq":2,"type":"Request"} <- {"body":{},"command":"launch","request_seq":2,"seq":3,"success":true,"type":"response"} {"command":"configurationDone","seq":3,"type":"Request"} <- {"body":{},"command":"configurationDone","request_seq":3,"seq":4,"success":true,"type":"response"} <- {"body":{"module":{"id":"341dfe22-562e-4db3-8729-b233a8cd1a5f","name":"System.Private.CoreLib.dll","path":"C:\\Program Files\\dotnet\\shared\\Microsoft.NETCore.App\\2.1.6\\System.Private.CoreLib.dll","symbolStatus":"Skipped loading symbols."},"reason":"new"},"event":"module","seq":5,"type":"event"} ....

Is there any error on my side?

[ayuckhulk]

@adospace Thanks for pointing this out. According to specification launch request should come after configurationDone, however VSCode does it the other way around - it sends launch request, sets breakpoints and only then issues the configurationDone command.

I guess netcoredbg should support both variants :smile:

[adospace]

@ayuckhulk ah ok, thanks for the explanation