tool/mbed/mbed-sdk/workspace_tools/host_tests/udpecho_server_auto.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
  18 import re
  19 import sys
  20 import uuid
  21 from sys import stdout
  22 from socket import socket, AF_INET, SOCK_DGRAM
  23
  24 class UDPEchoServerTest():
  25     ECHO_SERVER_ADDRESS = ""
  26     ECHO_PORT = 0
  27     s = None # Socket
  28
  29     PATTERN_SERVER_IP = "Server IP Address is (\d+).(\d+).(\d+).(\d+):(\d+)"
  30     re_detect_server_ip = re.compile(PATTERN_SERVER_IP)
  31
  32     def test(self, selftest):
  33         result = True
  34         serial_ip_msg = selftest.mbed.serial_readline()
  35         if serial_ip_msg is None:
  36             return selftest.RESULT_IO_SERIAL
  37         selftest.notify(serial_ip_msg)
  38         # Searching for IP address and port prompted by server
  39         m = self.re_detect_server_ip.search(serial_ip_msg)
  40         if m and len(m.groups()):
  41             self.ECHO_SERVER_ADDRESS = ".".join(m.groups()[:4])
  42             self.ECHO_PORT = int(m.groups()[4]) # must be integer for socket.connect method
  43             selftest.notify("HOST: UDP Server found at: " + self.ECHO_SERVER_ADDRESS + ":" + str(self.ECHO_PORT))
  44
  45             # We assume this test fails so can't send 'error' message to server
  46             try:
  47                 self.s = socket(AF_INET, SOCK_DGRAM)
  48             except Exception, e:
  49                 self.s = None
  50                 selftest.notify("HOST: Socket error: %s"% e)
  51                 return selftest.RESULT_ERROR
  52
  53             for i in range(0, 100):
  54                 TEST_STRING = str(uuid.uuid4())
  55                 self.s.sendto(TEST_STRING, (self.ECHO_SERVER_ADDRESS, self.ECHO_PORT))
  56                 data = self.s.recv(len(TEST_STRING))
  57                 received_str = repr(data)[1:-1]
  58                 if TEST_STRING != received_str:
  59                     result = False
  60                     break
  61                 sys.stdout.write('.')
  62                 stdout.flush()
  63         else:
  64             result = False
  65
  66         if self.s is not None:
  67             self.s.close()
  68         return selftest.RESULT_SUCCESS if result else selftest.RESULT_FAILURE