ECONNRESET connecting to Firebase auth emulator from functions emulator with grpc imported #945

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1. bryancalisto commented on May 15, 2026

   

   bryancalisto

   on May 15, 2026

   Last edited by bryancalisto

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   Similar thing here. This code fails in auth.verify_id_token (there's not something explicitly telling that it failed. I just never see the print('4')) when calling process_stuff through firebase emulators:start --only functions and get the error below:

   from firebase_admin import auth, initialize_app, firestore
   from firebase_functions import https_fn
   from loguru import logger
   import os
   from functools import wraps
   import base64
   import json
   from datetime import datetime, timezone
   from fn_impl.utils import ConsumablesError, Entity
   from firebase_functions.params import SecretParam
   
   
   def authenticate(f):
       @wraps(f)
       def decorated_function(req: https_fn.Request, *args, **kwargs):
           print('1')
           auth_header = req.headers.get('Authorization')
           if not auth_header or not auth_header.startswith('Bearer '):
               return https_fn.Response(
                   "Invalid credentials",
                   status=401
               )
   
           print('2')
   
           try:
               id_token = auth_header.split('Bearer ')[1]
               print('3')
               decoded_token = auth.verify_id_token(id_token)
               print('4')
   
               req.user = decoded_token
           except Exception as e:
               logger.error(f"Authentication failed: Unexpected error: {e}")
               return https_fn.Response(
                   "Error verifying credentials",
                   status=401
               )
   
           return f(req, *args, **kwargs)
       return decorated_function
   
   @https_fn.on_request()
   @authenticate
   def process_stuff(req: https_fn.Request):
   ...

   ERRORS:

   >  objc[60961]: +[NSNumber initialize] may have been in progress in another thread when fork() was called.
   >  objc[60961]: +[NSNumber initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
   i  Request to function failed: Error: read ECONNRESET
   >  [2026-05-15 18:57:32 +0000] [60960] [ERROR] Worker (pid:60961) was sent SIGKILL! Perhaps out of memory?
   

   I guess it's not memory related as there's more than 7 GB of free memory when the error triggers.

   I got the ECONNRESET (“Error: socket hang up”) a couple of times too, but not sure with which version of firebase-admin it was as I was testing with 7.2.0 and 7.0.4 .

   My requirements.txt looks like

   firebase-admin==7.4.0
   firebase-functions==0.5.0
   loguru==0.7.3

   firebase-tools version is 15.18.0

   Python version is 3.11.14.

   My system runs macos Tahoe 26.3.1 (M4).