Remote attach is very very buggy. Debug adapter crashes all the time #93

DonJayamanne · 2017-11-13T22:44:19Z

From @nojvek on March 14, 2017 0:8

Environment data

VS Code version: Version 1.10.2 (1.10.2)
Python Extension version: 0.5.9
Python Version: 2.7
OS and version: Mac OS Sierra

Expected behavior

Remote attach works like Chrome-Dev tools

Actual behavior

Python remote debugger connects with orange but crashes later

Steps to reproduce:

Run attach scenario

Settings

Your launch.json (if dealing with debugger issues):

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Attach (Remote Debug)",
            "type": "python",
            "request": "attach",
            "localRoot": "${workspaceRoot}",
            "remoteRoot": "/home/noj/xyz",
            "port": 3333,
            "secret": "boo",
            "host": "localhost"
        }
    ]
}

Your settings.json:

Logs

Output from Python output panel
----------Generating Tags----------
ctags --options=/Users/nojvek/.vscode/extensions/donjayamanne.python-0.5.9/resources/ctagOptions --languages=Python --exclude=/site-packages/ -o /Users/nojvek/mp/analytics/.vscode/tags .
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ctags: illegal option -- -
usage: ctags [-BFadtuwvx] [-f tagsfile] file ...

Output from Console window (Help->Developer Tools menu)

workbench.main.js:142 TypeError: Cannot read property 'Threads' of undefined
    at PythonDebugger.threadsRequest (/Users/nojvek/.vscode/extensions/donjayamanne.python-0.6.0/out/client/debugger/Main.js:339:27)
    at PythonDebugger.DebugSession.dispatchRequest (/Users/nojvek/.vscode/extensions/donjayamanne.python-0.6.0/node_modules/vscode-debugadapter/lib/debugSession.js:427:22)
    at PythonDebugger.ProtocolServer._handleData (/Users/nojvek/.vscode/extensions/donjayamanne.python-0.6.0/node_modules/vscode-debugadapter/lib/protocol.js:104:38)
    at Socket.<anonymous> (/Users/nojvek/.vscode/extensions/donjayamanne.python-0.6.0/node_modules/vscode-debugadapter/lib/protocol.js:24:60)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at Socket.Readable.push (_stream_readable.js:134:10)
    at Pipe.onread (net.js:543:20): Error: TypeError: Cannot read property 'Threads' of undefined
    at PythonDebugger.threadsRequest (/Users/nojvek/.vscode/extensions/donjayamanne.python-0.6.0/out/client/debugger/Main.js:339:27)
    at PythonDebugger.DebugSession.dispatchRequest (/Users/nojvek/.vscode/extensions/donjayamanne.python-0.6.0/node_modules/vscode-debugadapter/lib/debugSession.js:427:22)
    at PythonDebugger.ProtocolServer._handleData (/Users/nojvek/.vscode/extensions/donjayamanne.python-0.6.0/node_modules/vscode-debugadapter/lib/protocol.js:104:38)
    at Socket.<anonymous> (/Users/nojvek/.vscode/extensions/donjayamanne.python-0.6.0/node_modules/vscode-debugadapter/lib/protocol.js:24:60)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at Socket.Readable.push (_stream_readable.js:134:10)
    at Pipe.onread (net.js:543:20)
    at file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:95:13980
    at Object.v [as _notify] (file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:32:11161)
    at Object.enter (file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:32:14666)
    at _run (file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:32:15987)
    at _error (file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:32:15504)
    at file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:88:1241
    at g.e.dispatch (file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:88:2592)
    at g.e.handleData (file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:88:2100)
    at Socket.<anonymous> (file:////Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/electron-browser/workbench.main.js:88:1101)
    at emitOne (events.js:96:13)

Copied from original issue: DonJayamanne/pythonVSCode#819

The text was updated successfully, but these errors were encountered:

DonJayamanne · 2017-11-13T22:44:20Z

From @nojvek on March 14, 2017 0:17

I may know a thing or two about vscode debug adapters. I can definitely help get this issue fixed if someone is able to help me with the python side of things.

DonJayamanne · 2017-11-13T22:44:21Z

Have you tried this with a simple console application and attaching to a python application running in your locality machine first.

DonJayamanne · 2017-11-13T22:44:21Z

From @nojvek on March 14, 2017 16:55

I'll give that a shot. It seems threading might have to do something to do with it.

TypeError: Cannot read property 'Threads' of undefined. I was digging into the ptvsd code yest, is there a way for me to enable debugging on the tcp port that is exposed by the python app?

I need to first isolate that this is a client side issue on the debug adapter or an issue with debug server run by python. Is there any protocol documentation?

DonJayamanne · 2017-11-13T22:44:21Z

Unfortunately, the answer is no to all of them.

DonJayamanne · 2017-11-13T22:44:22Z

From @woutor on July 28, 2017 22:1

For those using Django, I also get the above exception, unless I provide the --nothreading argument to django manage.py.

python manage.py runserver 0.0.0.0:8000 --noreload --nothreading does the job

DonJayamanne · 2017-11-13T22:44:22Z

@nojvek please try the following suggestions:

If debugging Django, then ensure --notreading options is used
Ensure the PTVSD package is of version 3.0.0 (anything higher will not work)

DonJayamanne · 2017-11-13T22:44:23Z

From @nojvek on July 29, 2017 5:55

Will give it a shot. Thanks

On Fri, Jul 28, 2017 at 9:33 PM Don Jayamanne [email protected]
wrote:

@nojvek https://github.com/nojvek please try the following suggestions:

If debugging Django, then ensure --notreading options is used

Ensure the PTVSD package is of version 3.0.0 (anything higher will
not work)

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DonJayamanne · 2017-11-13T22:44:23Z

From @jarshwah on August 2, 2017 13:8

I looked into getting this working a couple of months back but abandoned because of the bugginess. It was easier for me to just use ipdb which is unfortunate, because debugging is just about the only thing I prefer pycharm for.

Anyhow, what I found was that the --noreload and --nothreading options were necessary. I also added the import of ptvsd and the ptvsd.wait_for_attach() call into the manage.py file which seemed to work the most reliably.

Happy to assist where I can. Would anyone from the python tools for visual studio team be able to help here? Surely they've run into similar issues during the development of ptvsd.

DonJayamanne · 2017-11-13T22:44:24Z

From @caspar-1 on August 10, 2017 13:14

might be usefull if the Remote-Debuging wiki page clarified that PTVSD version must be 3.0.0

alanjds · 2017-11-27T19:40:58Z

It worked after changed the version to 3.0.0

alanjds · 2017-11-27T19:51:10Z

Please replace the referred Wiki page code with this one:

[Remote Debugging](https://code.visualstudio.com/docs/python/debugging#_remote-debugging)

### Note:

As said [here](https://github.com/Microsoft/vscode-python/issues/93#issuecomment-344084499), install `ptvsd==3.0.0`, as this version is known to work.

```bash
pip install ptvsd==3.0.0

DonJayamanne · 2017-11-27T22:00:52Z

@alanjds Thanks, created an issue for that #299

DonJayamanne added Debugger labels Nov 13, 2017

DonJayamanne removed Debugger labels Nov 14, 2017

brettcannon added awaiting 2-PR area-debugging bug Issue identified by VS Code Team member as probable bug labels Nov 14, 2017

brettcannon closed this as completed May 7, 2018

lock bot locked as resolved and limited conversation to collaborators Jul 11, 2018

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Remote attach is very very buggy. Debug adapter crashes all the time #93

Remote attach is very very buggy. Debug adapter crashes all the time #93

DonJayamanne commented Nov 13, 2017

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

Uh oh!

DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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alanjds commented Nov 27, 2017

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alanjds commented Nov 27, 2017

Uh oh!

DonJayamanne commented Nov 27, 2017

Uh oh!

Remote attach is very very buggy. Debug adapter crashes all the time #93

Remote attach is very very buggy. Debug adapter crashes all the time #93

Comments

DonJayamanne commented Nov 13, 2017

Environment data

Expected behavior

Actual behavior

Steps to reproduce:

Settings

Logs

DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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DonJayamanne commented Nov 13, 2017

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alanjds commented Nov 27, 2017

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alanjds commented Nov 27, 2017

Uh oh!

DonJayamanne commented Nov 27, 2017

Uh oh!