Anders Blomdell / mbed-sdk-tools

Clone of official tools

host_tests/udpecho_client_auto.py@0:66f3b5499f7f, 2016-05-19 (annotated)

Committer:
screamer
Date:
Thu May 19 19:44:41 2016 +0100
Revision:
0:66f3b5499f7f
Child:
43:2a7da56ebd24
Initial revision

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:66f3b5499f7f 1 """
screamer 0:66f3b5499f7f 2 mbed SDK
screamer 0:66f3b5499f7f 3 Copyright (c) 2011-2013 ARM Limited
screamer 0:66f3b5499f7f 4
screamer 0:66f3b5499f7f 5 Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:66f3b5499f7f 6 you may not use this file except in compliance with the License.
screamer 0:66f3b5499f7f 7 You may obtain a copy of the License at
screamer 0:66f3b5499f7f 8
screamer 0:66f3b5499f7f 9 http://www.apache.org/licenses/LICENSE-2.0
screamer 0:66f3b5499f7f 10
screamer 0:66f3b5499f7f 11 Unless required by applicable law or agreed to in writing, software
screamer 0:66f3b5499f7f 12 distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:66f3b5499f7f 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:66f3b5499f7f 14 See the License for the specific language governing permissions and
screamer 0:66f3b5499f7f 15 limitations under the License.
screamer 0:66f3b5499f7f 16 """
screamer 0:66f3b5499f7f 17
screamer 0:66f3b5499f7f 18 import sys
screamer 0:66f3b5499f7f 19 import socket
screamer 0:66f3b5499f7f 20 from sys import stdout
screamer 0:66f3b5499f7f 21 from SocketServer import BaseRequestHandler, UDPServer
screamer 0:66f3b5499f7f 22
screamer 0:66f3b5499f7f 23 class UDPEchoClient_Handler(BaseRequestHandler):
screamer 0:66f3b5499f7f 24 def handle(self):
screamer 0:66f3b5499f7f 25 """ One handle per connection
screamer 0:66f3b5499f7f 26 """
screamer 0:66f3b5499f7f 27 data, socket = self.request
screamer 0:66f3b5499f7f 28 socket.sendto(data, self.client_address)
screamer 0:66f3b5499f7f 29 if '{{end}}' in data:
screamer 0:66f3b5499f7f 30 print
screamer 0:66f3b5499f7f 31 print data
screamer 0:66f3b5499f7f 32 else:
screamer 0:66f3b5499f7f 33 sys.stdout.write('.')
screamer 0:66f3b5499f7f 34 stdout.flush()
screamer 0:66f3b5499f7f 35
screamer 0:66f3b5499f7f 36 class UDPEchoClientTest():
screamer 0:66f3b5499f7f 37
screamer 0:66f3b5499f7f 38 def send_server_ip_port(self, selftest, ip_address, port_no):
screamer 0:66f3b5499f7f 39 c = selftest.mbed.serial_readline() # 'UDPCllient waiting for server IP and port...'
screamer 0:66f3b5499f7f 40 if c is None:
screamer 0:66f3b5499f7f 41 selftest.print_result(selftest.RESULT_IO_SERIAL)
screamer 0:66f3b5499f7f 42 return
screamer 0:66f3b5499f7f 43 selftest.notify(c.strip())
screamer 0:66f3b5499f7f 44
screamer 0:66f3b5499f7f 45 selftest.notify("HOST: Sending server IP Address to target...")
screamer 0:66f3b5499f7f 46 connection_str = ip_address + ":" + str(port_no) + "\n"
screamer 0:66f3b5499f7f 47 selftest.mbed.serial_write(connection_str)
screamer 0:66f3b5499f7f 48
screamer 0:66f3b5499f7f 49 c = selftest.mbed.serial_readline() # 'UDPCllient waiting for server IP and port...'
screamer 0:66f3b5499f7f 50 if c is None:
screamer 0:66f3b5499f7f 51 self.print_result(selftest.RESULT_IO_SERIAL)
screamer 0:66f3b5499f7f 52 return
screamer 0:66f3b5499f7f 53 selftest.notify(c.strip())
screamer 0:66f3b5499f7f 54 return selftest.RESULT_PASSIVE
screamer 0:66f3b5499f7f 55
screamer 0:66f3b5499f7f 56 def test(self, selftest):
screamer 0:66f3b5499f7f 57 # We need to discover SERVEP_IP and set up SERVER_PORT
screamer 0:66f3b5499f7f 58 # Note: Port 7 is Echo Protocol:
screamer 0:66f3b5499f7f 59 #
screamer 0:66f3b5499f7f 60 # Port number rationale:
screamer 0:66f3b5499f7f 61 #
screamer 0:66f3b5499f7f 62 # The Echo Protocol is a service in the Internet Protocol Suite defined
screamer 0:66f3b5499f7f 63 # in RFC 862. It was originally proposed for testing and measurement
screamer 0:66f3b5499f7f 64 # of round-trip times[citation needed] in IP networks.
screamer 0:66f3b5499f7f 65 #
screamer 0:66f3b5499f7f 66 # A host may connect to a server that supports the Echo Protocol using
screamer 0:66f3b5499f7f 67 # the Transmission Control Protocol (TCP) or the User Datagram Protocol
screamer 0:66f3b5499f7f 68 # (UDP) on the well-known port number 7. The server sends back an
screamer 0:66f3b5499f7f 69 # identical copy of the data it received.
screamer 0:66f3b5499f7f 70 SERVER_IP = str(socket.gethostbyname(socket.getfqdn()))
screamer 0:66f3b5499f7f 71 SERVER_PORT = 7
screamer 0:66f3b5499f7f 72
screamer 0:66f3b5499f7f 73 # Returning none will suppress host test from printing success code
screamer 0:66f3b5499f7f 74 server = UDPServer((SERVER_IP, SERVER_PORT), UDPEchoClient_Handler)
screamer 0:66f3b5499f7f 75 print "HOST: Listening for UDP connections..."
screamer 0:66f3b5499f7f 76 self.send_server_ip_port(selftest, SERVER_IP, SERVER_PORT)
screamer 0:66f3b5499f7f 77 server.serve_forever()