tmk_core/tool/mbed/mbed-sdk/workspace_tools/host_tests/udpecho_client_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 sys
  19 import socket
  20 from sys import stdout
  21 from SocketServer import BaseRequestHandler, UDPServer
  22
  23 class UDPEchoClient_Handler(BaseRequestHandler):
  24     def handle(self):
  25         """ One handle per connection
  26         """
  27         data, socket = self.request
  28         socket.sendto(data, self.client_address)
  29         if '{{end}}' in data:
  30             print
  31             print data
  32         else:
  33             sys.stdout.write('.')
  34         stdout.flush()
  35
  36 class UDPEchoClientTest():
  37
  38     def send_server_ip_port(self, selftest, ip_address, port_no):
  39         c = selftest.mbed.serial_readline() # 'UDPCllient waiting for server IP and port...'
  40         if c is None:
  41             selftest.print_result(selftest.RESULT_IO_SERIAL)
  42             return
  43         selftest.notify(c.strip())
  44
  45         selftest.notify("HOST: Sending server IP Address to target...")
  46         connection_str = ip_address + ":" + str(port_no) + "\n"
  47         selftest.mbed.serial_write(connection_str)
  48
  49         c = selftest.mbed.serial_readline() # 'UDPCllient waiting for server IP and port...'
  50         if c is None:
  51             self.print_result(selftest.RESULT_IO_SERIAL)
  52             return
  53         selftest.notify(c.strip())
  54         return selftest.RESULT_PASSIVE
  55
  56     def test(self, selftest):
  57         # We need to discover SERVEP_IP and set up SERVER_PORT
  58         # Note: Port 7 is Echo Protocol:
  59         #
  60         # Port number rationale:
  61         #
  62         # The Echo Protocol is a service in the Internet Protocol Suite defined
  63         # in RFC 862. It was originally proposed for testing and measurement
  64         # of round-trip times[citation needed] in IP networks.
  65         #
  66         # A host may connect to a server that supports the Echo Protocol using
  67         # the Transmission Control Protocol (TCP) or the User Datagram Protocol
  68         # (UDP) on the well-known port number 7. The server sends back an
  69         # identical copy of the data it received.
  70         SERVER_IP = str(socket.gethostbyname(socket.getfqdn()))
  71         SERVER_PORT = 7
  72
  73         # Returning none will suppress host test from printing success code
  74         server = UDPServer((SERVER_IP, SERVER_PORT), UDPEchoClient_Handler)
  75         print "HOST: Listening for UDP connections..."
  76         self.send_server_ip_port(selftest, SERVER_IP, SERVER_PORT)
  77         server.serve_forever()