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Remote debugger not working

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Hi!

I want to remote debug from python script.

In dev tools settings page I have checked: Enable browser chrome and add-on debugging toolboxes Enable remote debugging

And when I check about:config there it also shows: devtools.debugger.remote-enabled: true devtools.debugger.remote-host: localhost devtools.debugger.remote-port: 6000 devtools.debugger.remote-timeout: 20000 devtools.debugger.remote-websocket: true.

When I go to tools > browser tools > Browser toolbox then it asks if I want to allow connection and if I press ok then it works.


However when I run the following python code: import asyncio import websockets

async def connect_to_firefox():

   async with websockets.connect('ws://localhost:49928/devtools/browser') as websocket:
       # Now you have a connection to Firefox using the remote debugging protocol
       # You can send commands and receive responses through the WebSocket connection
       # For example, you can send a request to get the list of available browser tabs
       request = '{"id": 1, "method": "Browser.getBrowserList", "params": {}}'
       await websocket.send(request)
       response = await websocket.recv()
       print(response)
  1. Run the connection coroutine

asyncio.get_event_loop().run_until_complete(connect_to_firefox())


Then I get: ConnectionRefusedError: [WinError 1225] The remote computer refused the network connection

Question: Why does browser toolbox work but python script doesn't?

Hi! I want to remote debug from python script. In dev tools settings page I have checked: Enable browser chrome and add-on debugging toolboxes Enable remote debugging And when I check about:config there it also shows: devtools.debugger.remote-enabled: true devtools.debugger.remote-host: localhost devtools.debugger.remote-port: 6000 devtools.debugger.remote-timeout: 20000 devtools.debugger.remote-websocket: true. When I go to tools > browser tools > Browser toolbox then it asks if I want to allow connection and if I press ok then it works. However when I run the following python code: import asyncio import websockets async def connect_to_firefox(): async with websockets.connect('ws://localhost:49928/devtools/browser') as websocket: # Now you have a connection to Firefox using the remote debugging protocol # You can send commands and receive responses through the WebSocket connection # For example, you can send a request to get the list of available browser tabs request = '{"id": 1, "method": "Browser.getBrowserList", "params": {}}' await websocket.send(request) response = await websocket.recv() print(response) # Run the connection coroutine asyncio.get_event_loop().run_until_complete(connect_to_firefox()) Then I get: ConnectionRefusedError: [WinError 1225] The remote computer refused the network connection Question: Why does browser toolbox work but python script doesn't?

Krejt Përgjigjet (5)

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Ok since this site does not allow editing posts, I have to post clarification as a new comment: I tried to connect port 6000 at first. Only later tried 49928 because this is what browser toolbox seems to use. But both fail with same error.

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Are you using the Marionette interface:

https://firefox-source-docs.mozilla.org/testing/marionette/Intro.html

By default, marionette.port is set to 2828. Can you connect on that port?

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That didn't work either. I just thought I could use browser toolbox functionality remotely. Not sure if it is Marionette or something else.

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You can find "Edit this question" under the "Question Tools" menu in the sidebar. For a reply, "Edit this post" is in the three-dot menu next to a reply.

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This edit option is only for my replies, not for the main post.