code: def _retrieve_buffer(conn, length):
      data = bytearray()
  
      while length > 0:
          pkt = conn.recv(length)
          if len(pkt) == 0:
              logging.info("Frontend disconnected.")
              sys.exit(0)
  
          data += pkt
          length -= len(pkt)
  
      return data
  
imports: import io
  import json
  import logging
  import os
  import struct
  import sys
  import time
  from builtins import bytearray, bytes
  import torch
  from ts.utils.util import deprecated
label_desc: Use image node_id 5 for calling a global function with example usage: _retrieve_buffer(conn, length) and returns: data