How to debug code inside the RPC server

[oren0e]

Hi,
I would like a way to "attach" to the rpc server and be able to step through the code that is being run by it in a debugger. How can I do that? Currently the code that runs in the RPC server is kind of a black box to me and this makes it hard to debug problems.

Thanks in advance.

[bombela]

You can try the python debugger `pdb`. I suspect it won't be the nicest experience because of long jump across gevent stackfull coroutines.

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On Tue, Dec 24, 2024, 14:25 oren0e ***@***.***> wrote: Hi, I would like a way to "attach" to the rpc server and be able to step through the code that is being run by it in a debugger. How can I do that? Currently the code that runs in the RPC server is kind of a black box to me and this makes it hard to debug problems. Thanks in advance. — Reply to this email directly, view it on GitHub <#270>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABUZDEZMCI5T6R5LFE5VYD2HFOEJAVCNFSM6AAAAABUEXAHRGVHI2DSMVQWIX3LMV43ASLTON2WKOZSG42TOOBQGE3TEMA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[oren0e]

@bombela I know, I have tried to debug with pdb (the normal debugger I usually use) but the problem is that eventually you get to a .call() method or something like that for the rpc server and that's it.

[bombela]

I might have miss understood. At the risk of stating the obvious, you must run the debug on the server. Likely with a breakpoint of the handler of interest.

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On Tue, Dec 24, 2024, 23:06 oren0e ***@***.***> wrote: @bombela <https://github.com/bombela> I know, I have tried to debug with pdb (the normal debugger I usually use) but the problem is that eventually you get to a .call() method or something like that for the rpc server and that's it. — Reply to this email directly, view it on GitHub <#270 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABUZDFP6QWVXNQVP7IFV232HHLIDAVCNFSM6AAAAABUEXAHRGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKNRRGQ3DSNZUGU> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[oren0e]

@bombela of course. The setup is that on the same server there is a code that executes and then calls to the rpc server which is on the same server, just a different process on a different port. My question is how to attach to that port and be able to debug properly.

[bombela]

I meant to run the debugger on the python process receiving calls from the network, and executing the functions/handlers. If I understood correctly, in your case you would want to run PDB on the RPC server. I don't think PDB can attach. But you can surely start the process under PDB at least. https://docs.python.org/3/library/pdb.html

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On Wed, Jan 1, 2025, 20:42 oren0e ***@***.***> wrote: @bombela <https://github.com/bombela> of course. The setup is that on the same server there is a code that executes and then calls to the rpc server which is on the same server, just a different process on a different port. My question is how to attach to that port and be able to debug properly. — Reply to this email directly, view it on GitHub <#270 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABUZDEPFBIU3SHQGJRVGZL2IRAMBAVCNFSM6AAAAABUEXAHRGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKNRXGEZDIMJQG4> . You are receiving this because you were mentioned.Message ID: ***@***.***>