Add a possibility to catch webrtc ice connection process errors and more

[tlloancy]

Describe the project you are working on

A P2P contact system where the user is able to select his own ice server

Describe the problem or limitation you are having in your project

i can't catch any error ice related, as described here godotengine/webrtc-native#145

Describe the feature / enhancement and how it helps to overcome the problem or limitation

If i could catch those errors, i could display them on ui and it would greatly help for both UI and DEVELOPMENT purposes

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

its just a try{} catch(e) {} or except() system to not let the error crash the system and be able to display it instead

If this enhancement will not be used often, can it be worked around with a few lines of script?

not sure about that at all

Is there a reason why this should be core and not an add-on in the asset library?

i dont knwo about that thats why i have opened both issues godotengine/webrtc-native#145 godotengine/godot#84645

[Calinou]

Moving to discussion, as there is no concrete technical implementation provided.

[tlloancy]

Hi, by all means im probably out of your league on those c++ libraries + gdscript combo. But i tried a simple python example which show what i'd expect (ouioui(0)) and what i actually get (ouioui(1)). And i think this is because you already catch errors in webrtc, but there is no cascada. (ouioui(2))

https://www.online-python.com/JNilDo7PIc
https://www.online-python.com/PpKo3xUMcn

[tlloancy]

just a quick explanation here

call to functions with main.py

# Online Python - IDE, Editor, Compiler, Interpreter
from Untitled3 import *


try:
    ouioui(0)
except Exception as e:
    print("error: " + repr(e))
    
try:
    ouioui(1)
except Exception as e:
    print("Id like to catch you, but i just can't" + repr(e))
    
try:
    ouioui(2)
except Exception as e:
    print("HERE " + repr(e))

where is emulated the call to webrtc lib is Untitled3.py

from Untitled2 import *
def ouioui(a):
    if a == 0:
        raise Exception("ice url invalid")
    else:
        try:
            olol()
        except Exception as e:
            print(repr(e))
            if a == 2:
                raise Exception(repr(e))
    #olol()["toto"] = 4

Error can be catched if reraised as shown in Untitled2 my crew

def olol():
  raise Exception("i fail but im catched")  
#    return None

And we're done

[tlloancy]

Usually, THAT is the output we get:

try 1:

error: Exception('ice url invalid')

try 2:

Exception('i fail but im catched')

(not really indeed)

try 3:

Exception('i fail but im catched')
HERE Exception("Exception('i fail but im catched')")

There we go !

[tlloancy]

allo ?