Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

tools/host_tests/udpecho_client_auto.py@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

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elessair 0:f269e3021894 1 """
elessair 0:f269e3021894 2 mbed SDK
elessair 0:f269e3021894 3 Copyright (c) 2011-2013 ARM Limited
elessair 0:f269e3021894 4
elessair 0:f269e3021894 5 Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 6 you may not use this file except in compliance with the License.
elessair 0:f269e3021894 7 You may obtain a copy of the License at
elessair 0:f269e3021894 8
elessair 0:f269e3021894 9 http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 10
elessair 0:f269e3021894 11 Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 12 distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 14 See the License for the specific language governing permissions and
elessair 0:f269e3021894 15 limitations under the License.
elessair 0:f269e3021894 16 """
elessair 0:f269e3021894 17
elessair 0:f269e3021894 18 import sys
elessair 0:f269e3021894 19 import socket
elessair 0:f269e3021894 20 from sys import stdout
elessair 0:f269e3021894 21 from SocketServer import BaseRequestHandler, UDPServer
elessair 0:f269e3021894 22
elessair 0:f269e3021894 23 class UDPEchoClient_Handler(BaseRequestHandler):
elessair 0:f269e3021894 24 def handle(self):
elessair 0:f269e3021894 25 """ One handle per connection
elessair 0:f269e3021894 26 """
elessair 0:f269e3021894 27 data, socket = self.request
elessair 0:f269e3021894 28 socket.sendto(data, self.client_address)
elessair 0:f269e3021894 29 if '{{end}}' in data:
elessair 0:f269e3021894 30 print
elessair 0:f269e3021894 31 print data
elessair 0:f269e3021894 32 else:
elessair 0:f269e3021894 33 sys.stdout.write('.')
elessair 0:f269e3021894 34 stdout.flush()
elessair 0:f269e3021894 35
elessair 0:f269e3021894 36 class UDPEchoClientTest():
elessair 0:f269e3021894 37
elessair 0:f269e3021894 38 def send_server_ip_port(self, selftest, ip_address, port_no):
elessair 0:f269e3021894 39 c = selftest.mbed.serial_readline() # 'UDPCllient waiting for server IP and port...'
elessair 0:f269e3021894 40 if c is None:
elessair 0:f269e3021894 41 selftest.print_result(selftest.RESULT_IO_SERIAL)
elessair 0:f269e3021894 42 return
elessair 0:f269e3021894 43 selftest.notify(c.strip())
elessair 0:f269e3021894 44
elessair 0:f269e3021894 45 selftest.notify("HOST: Sending server IP Address to target...")
elessair 0:f269e3021894 46 connection_str = ip_address + ":" + str(port_no) + "\n"
elessair 0:f269e3021894 47 selftest.mbed.serial_write(connection_str)
elessair 0:f269e3021894 48
elessair 0:f269e3021894 49 c = selftest.mbed.serial_readline() # 'UDPCllient waiting for server IP and port...'
elessair 0:f269e3021894 50 if c is None:
elessair 0:f269e3021894 51 self.print_result(selftest.RESULT_IO_SERIAL)
elessair 0:f269e3021894 52 return
elessair 0:f269e3021894 53 selftest.notify(c.strip())
elessair 0:f269e3021894 54 return selftest.RESULT_PASSIVE
elessair 0:f269e3021894 55
elessair 0:f269e3021894 56 def test(self, selftest):
elessair 0:f269e3021894 57 # We need to discover SERVEP_IP and set up SERVER_PORT
elessair 0:f269e3021894 58 # Note: Port 7 is Echo Protocol:
elessair 0:f269e3021894 59 #
elessair 0:f269e3021894 60 # Port number rationale:
elessair 0:f269e3021894 61 #
elessair 0:f269e3021894 62 # The Echo Protocol is a service in the Internet Protocol Suite defined
elessair 0:f269e3021894 63 # in RFC 862. It was originally proposed for testing and measurement
elessair 0:f269e3021894 64 # of round-trip times[citation needed] in IP networks.
elessair 0:f269e3021894 65 #
elessair 0:f269e3021894 66 # A host may connect to a server that supports the Echo Protocol using
elessair 0:f269e3021894 67 # the Transmission Control Protocol (TCP) or the User Datagram Protocol
elessair 0:f269e3021894 68 # (UDP) on the well-known port number 7. The server sends back an
elessair 0:f269e3021894 69 # identical copy of the data it received.
elessair 0:f269e3021894 70 SERVER_IP = str(socket.gethostbyname(socket.getfqdn()))
elessair 0:f269e3021894 71 SERVER_PORT = 7
elessair 0:f269e3021894 72
elessair 0:f269e3021894 73 # Returning none will suppress host test from printing success code
elessair 0:f269e3021894 74 server = UDPServer((SERVER_IP, SERVER_PORT), UDPEchoClient_Handler)
elessair 0:f269e3021894 75 print "HOST: Listening for UDP connections..."
elessair 0:f269e3021894 76 self.send_server_ip_port(selftest, SERVER_IP, SERVER_PORT)
elessair 0:f269e3021894 77 server.serve_forever()