code: def recv_all(self, n):
      buf = b""
      while len(buf) < n:
          data = self.recv(n - len(buf))
          if data == b"":
              raise ConnectionAbortedError
          buf += data
      return buf
  
imports: import asyncio
  import asyncio.events
  import contextlib
  import os
  import pprint
  import select
  import socket
  import tempfile
  import threading
  from test import support
label_desc: Use image node_id 2 for calling the TestSocketWrapper obj's underlying member method code with example usage: obj.recv_all(n) and returns: buf