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host_tests/tcpecho_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, TCPServer
screamer 0:66f3b5499f7f 22
screamer 0:66f3b5499f7f 23 class TCPEchoClient_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 print "HOST: Connection received...",
screamer 0:66f3b5499f7f 28 count = 1;
screamer 0:66f3b5499f7f 29 while True:
screamer 0:66f3b5499f7f 30 data = self.request.recv(1024)
screamer 0:66f3b5499f7f 31 if not data: break
screamer 0:66f3b5499f7f 32 self.request.sendall(data)
screamer 0:66f3b5499f7f 33 if '{{end}}' in str(data):
screamer 0:66f3b5499f7f 34 print
screamer 0:66f3b5499f7f 35 print str(data)
screamer 0:66f3b5499f7f 36 else:
screamer 0:66f3b5499f7f 37 if not count % 10:
screamer 0:66f3b5499f7f 38 sys.stdout.write('.')
screamer 0:66f3b5499f7f 39 count += 1
screamer 0:66f3b5499f7f 40 stdout.flush()
screamer 0:66f3b5499f7f 41
screamer 0:66f3b5499f7f 42 class TCPEchoClientTest():
screamer 0:66f3b5499f7f 43 def send_server_ip_port(self, selftest, ip_address, port_no):
screamer 0:66f3b5499f7f 44 """ Set up network host. Reset target and and send server IP via serial to Mbed
screamer 0:66f3b5499f7f 45 """
screamer 0:66f3b5499f7f 46 c = selftest.mbed.serial_readline() # 'TCPCllient waiting for server IP and port...'
screamer 0:66f3b5499f7f 47 if c is None:
screamer 0:66f3b5499f7f 48 self.print_result(selftest.RESULT_IO_SERIAL)
screamer 0:66f3b5499f7f 49 return
screamer 0:66f3b5499f7f 50
screamer 0:66f3b5499f7f 51 selftest.notify(c.strip())
screamer 0:66f3b5499f7f 52 selftest.notify("HOST: Sending server IP Address to target...")
screamer 0:66f3b5499f7f 53
screamer 0:66f3b5499f7f 54 connection_str = ip_address + ":" + str(port_no) + "\n"
screamer 0:66f3b5499f7f 55 selftest.mbed.serial_write(connection_str)
screamer 0:66f3b5499f7f 56 selftest.notify(connection_str)
screamer 0:66f3b5499f7f 57
screamer 0:66f3b5499f7f 58 # Two more strings about connection should be sent by MBED
screamer 0:66f3b5499f7f 59 for i in range(0, 2):
screamer 0:66f3b5499f7f 60 c = selftest.mbed.serial_readline()
screamer 0:66f3b5499f7f 61 if c is None:
screamer 0:66f3b5499f7f 62 selftest.print_result(self.RESULT_IO_SERIAL)
screamer 0:66f3b5499f7f 63 return
screamer 0:66f3b5499f7f 64 selftest.notify(c.strip())
screamer 0:66f3b5499f7f 65
screamer 0:66f3b5499f7f 66 def test(self, selftest):
screamer 0:66f3b5499f7f 67 # We need to discover SERVEP_IP and set up SERVER_PORT
screamer 0:66f3b5499f7f 68 # Note: Port 7 is Echo Protocol:
screamer 0:66f3b5499f7f 69 #
screamer 0:66f3b5499f7f 70 # Port number rationale:
screamer 0:66f3b5499f7f 71 #
screamer 0:66f3b5499f7f 72 # The Echo Protocol is a service in the Internet Protocol Suite defined
screamer 0:66f3b5499f7f 73 # in RFC 862. It was originally proposed for testing and measurement
screamer 0:66f3b5499f7f 74 # of round-trip times[citation needed] in IP networks.
screamer 0:66f3b5499f7f 75 #
screamer 0:66f3b5499f7f 76 # A host may connect to a server that supports the Echo Protocol using
screamer 0:66f3b5499f7f 77 # the Transmission Control Protocol (TCP) or the User Datagram Protocol
screamer 0:66f3b5499f7f 78 # (UDP) on the well-known port number 7. The server sends back an
screamer 0:66f3b5499f7f 79 # identical copy of the data it received.
screamer 0:66f3b5499f7f 80 SERVER_IP = str(socket.gethostbyname(socket.getfqdn()))
screamer 0:66f3b5499f7f 81 SERVER_PORT = 7
screamer 0:66f3b5499f7f 82
screamer 0:66f3b5499f7f 83 # Returning none will suppress host test from printing success code
screamer 0:66f3b5499f7f 84 server = TCPServer((SERVER_IP, SERVER_PORT), TCPEchoClient_Handler)
screamer 0:66f3b5499f7f 85 print "HOST: Listening for TCP connections: " + SERVER_IP + ":" + str(SERVER_PORT)
screamer 0:66f3b5499f7f 86 self.send_server_ip_port(selftest, SERVER_IP, SERVER_PORT)
screamer 0:66f3b5499f7f 87 server.serve_forever()