[ Frontend ] Multiprocessing for OpenAI Server with zeromq

tests/entrypoints/openai/test_basic.py

@@ -1,9 +1,11 @@
+import socket
 from http import HTTPStatus
 
 import openai
 import pytest
 import requests
 
+from vllm import envs
 from vllm.version import __version__ as VLLM_VERSION
 
 from ...utils import RemoteOpenAIServer