--remote-debug leads to ERROR: connect_to_host: Remote Debugger: Unable to connect. Status: 3.

[mrimvo]

Godot version:
3.3

OS/device including version:
Ubuntu 18.04

Issue description:

When trying to connect to a remote debugger with --remote-debug, this error message appears:

ERROR: connect_to_host: Remote Debugger: Unable to connect. Status: 3.
   At: scene/debugger/script_debugger_remote.cpp:95.

Steps to reproduce:

1. start the Godot Editor with an project open
2. in the root folder of the project, start godot --remote-debug localhost:6007

EXPECTED: the second godot instance connects to the debugger in the first godot instance
OBSERVED: the game starts after step 2, but doesn't connect to the debugger. Instead the above error message appears

Minimal reproduction project:
An empty project with an empty main scene.
empty-godot-project.zip

[Calinou]

@mrimvo Does it work if you use 127.0.0.1:6007 instead?

Also, are you on a dual-stack IPv4/IPv6 network?

Remember that the Godot editor does not listen for incoming debugger connections. Only the project running from the editor does. See godotengine/godot-proposals#2608.

[mrimvo]

127.0.0.1:6007 instead?

doesn't work, same error message

Also, are you on a dual-stack IPv4/IPv6 network?

Not sure about this - is there is linux command I can type to check for this? ifconfig shows me both an inet and inet6 address for the wifi-adapter. Is this the information you asked for?

Remember that the Godot editor does not listen for incoming debugger connections. Only the project running from the editor does. See godotengine/godot-proposals#2608.

This sounds like it is exactly the same issue. It looks like the Godot editor doesn't start the debugger to listen on localhost:6007, that's why it can't connect with --remote-debug.

[Calinou]

This sounds like it is exactly the same issue. It looks like the Godot editor doesn't start the debugger to listen on localhost:6007, that's why it can't connect with --remote-debug.

In this case, I'll close this as a duplicate of godotengine/godot-proposals#2608.