tool/mbed/mbed-sdk/workspace_tools/host_tests/udpecho_client.py

   1 """
   2 mbed SDK
   3 Copyright (c) 2011-2013 ARM Limited
   4
   5 Licensed under the Apache License, Version 2.0 (the "License");
   6 you may not use this file except in compliance with the License.
   7 You may obtain a copy of the License at
   8
   9     http://www.apache.org/licenses/LICENSE-2.0
  10
  11 Unless required by applicable law or agreed to in writing, software
  12 distributed under the License is distributed on an "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 See the License for the specific language governing permissions and
  15 limitations under the License.
  16 """
  17 from socket import socket, AF_INET, SOCK_DGRAM
  18 import string, random
  19 from time import time
  20
  21 from private_settings import CLIENT_ADDRESS
  22
  23 ECHO_PORT = 7
  24
  25 LEN_PACKET = 127
  26 N_PACKETS = 5000
  27 TOT_BITS = float(LEN_PACKET * N_PACKETS * 8) * 2
  28 MEGA = float(1024 * 1024)
  29 UPDATE_STEP = (N_PACKETS/10)
  30
  31 class UDP_EchoClient:
  32     s = socket(AF_INET, SOCK_DGRAM)
  33
  34     def __init__(self, host):
  35         self.host = host
  36         self.packet = ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(LEN_PACKET))
  37
  38     def __packet(self):
  39         # Comment out the checks when measuring the throughput
  40         # packet = ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(LEN_PACKET))
  41         UDP_EchoClient.s.sendto(packet, (self.host, ECHO_PORT))
  42         data = UDP_EchoClient.s.recv(LEN_PACKET)
  43         # assert packet == data, "packet error:\n%s\n%s\n" % (packet, data)
  44
  45     def test(self):
  46         start = time()
  47         for i in range(N_PACKETS):
  48             if (i % UPDATE_STEP) == 0: print '%.2f%%' % ((float(i)/float(N_PACKETS)) * 100.)
  49             self.__packet()
  50         t = time() - start
  51         print 'Throughput: (%.2f)Mbits/s' % ((TOT_BITS / t)/MEGA)
  52
  53 while True:
  54     e = UDP_EchoClient(CLIENT_ADDRESS)
  55     e.test()