code: def _retrieve_reqest_header(conn):
      """
      MSG Frame Format:
  
      | parameter_name |
      | content_type |
      | input data in bytes |
      """
      length = _retrieve_int(conn)
      if length == -1:
          return None
  
      header = {}
      header["name"] = _retrieve_buffer(conn, length)
  
      length = _retrieve_int(conn)
      header["value"] = _retrieve_buffer(conn, length)
  
      return header
  
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 11 for calling a global function with example usage: _retrieve_reqest_header(conn) and returns: header, None