code: def set_socket_reuse_port(sock: socket.socket) -> bool:
      """Mutate a socket object to allow multiple process listening on the same port.
  
      Returns:
          success: whether the setting was successful.
      """
      try:
          # These two socket options will allow multiple process to bind the the
          # same port. Kernel will evenly load balance among the port listeners.
          # Note: this will only work on Linux.
          sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
          if hasattr(socket, "SO_REUSEPORT"):
              sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
          # In some Python binary distribution (e.g., conda py3.6), this flag
          # was not present at build time but available in runtime. But
          # Python relies on compiler flag to include this in binary.
          # Therefore, in the absence of socket.SO_REUSEPORT, we try
          # to use `15` which is value in linux kernel.
          # https://github.com/torvalds/linux/blob/master/tools/include/uapi/asm-generic/socket.h#L27
          else:
              sock.setsockopt(socket.SOL_SOCKET, 15, 1)
          return True
      except Exception as e:
          logger.debug(
              f"Setting SO_REUSEPORT failed because of {e}. SO_REUSEPORT is disabled."
          )
          return False
  
imports: import asyncio
  import inspect
  import json
  import logging
  import pickle
  import socket
  from dataclasses import dataclass
  from typing import Any, List, Optional, Tuple, Type
  import starlette
  from fastapi.encoders import jsonable_encoder
  from starlette.types import ASGIApp, Message, Receive, Scope, Send
  from uvicorn.config import Config
  from uvicorn.lifespan.on import LifespanOn
  from ray._private.pydantic_compat import IS_PYDANTIC_2
  from ray.actor import ActorHandle
  from ray.serve._private.constants import SERVE_LOGGER_NAME
  from ray.serve._private.utils import serve_encoders
  from ray.serve.exceptions import RayServeException
label_desc: Use image node_id 4 for calling a global function with example usage: set_socket_reuse_port(sock) and returns: True, False