text: #!/usr/bin/env python
  # This file is part of the OpenMV project.
  #
  # Copyright (c) 2013-2021 Ibrahim Abdelkader <iabdalkader@openmv.io>
  # Copyright (c) 2013-2021 Kwabena W. Agyeman <kwagyeman@openmv.io>
  #
  # This work is licensed under the MIT license, see the file LICENSE for details.
  #
  # An example TCP client for testing WiFi modules.
  
  import time
  import select
  import socket
  
  UPLOAD_LEN   =  5*1024
  DOWNLOAD_LEN = 10*1024
  ADDR=('192.168.1.103', 8080)
  
  def recvall(sock, n):
      # Helper function to recv n bytes or return None if EOF is hit
      data = bytearray()
      while len(data) < n:
          packet = sock.recv(n - len(data))
          if not packet:
              return None
          data.extend(packet)
      return data
  
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.connect(ADDR)
  
  upload = 0
  download = 0
  while (True):
      s.sendall(b'0' * UPLOAD_LEN)
      buf = recvall(s, DOWNLOAD_LEN)
      upload += UPLOAD_LEN
      download += DOWNLOAD_LEN
      print("Upload: %.3f MBytes Download: %.3f MBytes" %(upload/(1024*1024), download/(1024*1024)))
  s.close()
  