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host_tests/tcpecho_client_auto.py@43:2a7da56ebd24, 2018-09-25 (annotated)

Committer:
theotherjimmy
Date:
Tue Sep 25 13:43:09 2018 -0500
Revision:
43:2a7da56ebd24
Parent:
0:66f3b5499f7f 
Release 5.10.0

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 """
theotherjimmy 43:2a7da56ebd24 17 from __future__ import print_function
screamer 0:66f3b5499f7f 18
screamer 0:66f3b5499f7f 19 import sys
screamer 0:66f3b5499f7f 20 import socket
screamer 0:66f3b5499f7f 21 from sys import stdout
theotherjimmy 43:2a7da56ebd24 22 try:
theotherjimmy 43:2a7da56ebd24 23 from SocketServer import BaseRequestHandler, TCPServer
theotherjimmy 43:2a7da56ebd24 24 except ImportError:
theotherjimmy 43:2a7da56ebd24 25 from socketserver import BaseRequestHandler, TCPServer
screamer 0:66f3b5499f7f 26
screamer 0:66f3b5499f7f 27 class TCPEchoClient_Handler(BaseRequestHandler):
screamer 0:66f3b5499f7f 28 def handle(self):
screamer 0:66f3b5499f7f 29 """ One handle per connection
screamer 0:66f3b5499f7f 30 """
theotherjimmy 43:2a7da56ebd24 31 print("HOST: Connection received...")
screamer 0:66f3b5499f7f 32 count = 1;
screamer 0:66f3b5499f7f 33 while True:
screamer 0:66f3b5499f7f 34 data = self.request.recv(1024)
screamer 0:66f3b5499f7f 35 if not data: break
screamer 0:66f3b5499f7f 36 self.request.sendall(data)
screamer 0:66f3b5499f7f 37 if '{{end}}' in str(data):
screamer 0:66f3b5499f7f 38 print
theotherjimmy 43:2a7da56ebd24 39 print(str(data))
screamer 0:66f3b5499f7f 40 else:
screamer 0:66f3b5499f7f 41 if not count % 10:
screamer 0:66f3b5499f7f 42 sys.stdout.write('.')
screamer 0:66f3b5499f7f 43 count += 1
screamer 0:66f3b5499f7f 44 stdout.flush()
screamer 0:66f3b5499f7f 45
screamer 0:66f3b5499f7f 46 class TCPEchoClientTest():
screamer 0:66f3b5499f7f 47 def send_server_ip_port(self, selftest, ip_address, port_no):
screamer 0:66f3b5499f7f 48 """ Set up network host. Reset target and and send server IP via serial to Mbed
screamer 0:66f3b5499f7f 49 """
screamer 0:66f3b5499f7f 50 c = selftest.mbed.serial_readline() # 'TCPCllient waiting for server IP and port...'
screamer 0:66f3b5499f7f 51 if c is None:
screamer 0:66f3b5499f7f 52 self.print_result(selftest.RESULT_IO_SERIAL)
screamer 0:66f3b5499f7f 53 return
screamer 0:66f3b5499f7f 54
screamer 0:66f3b5499f7f 55 selftest.notify(c.strip())
screamer 0:66f3b5499f7f 56 selftest.notify("HOST: Sending server IP Address to target...")
screamer 0:66f3b5499f7f 57
screamer 0:66f3b5499f7f 58 connection_str = ip_address + ":" + str(port_no) + "\n"
screamer 0:66f3b5499f7f 59 selftest.mbed.serial_write(connection_str)
screamer 0:66f3b5499f7f 60 selftest.notify(connection_str)
screamer 0:66f3b5499f7f 61
screamer 0:66f3b5499f7f 62 # Two more strings about connection should be sent by MBED
screamer 0:66f3b5499f7f 63 for i in range(0, 2):
screamer 0:66f3b5499f7f 64 c = selftest.mbed.serial_readline()
screamer 0:66f3b5499f7f 65 if c is None:
screamer 0:66f3b5499f7f 66 selftest.print_result(self.RESULT_IO_SERIAL)
screamer 0:66f3b5499f7f 67 return
screamer 0:66f3b5499f7f 68 selftest.notify(c.strip())
screamer 0:66f3b5499f7f 69
screamer 0:66f3b5499f7f 70 def test(self, selftest):
screamer 0:66f3b5499f7f 71 # We need to discover SERVEP_IP and set up SERVER_PORT
screamer 0:66f3b5499f7f 72 # Note: Port 7 is Echo Protocol:
screamer 0:66f3b5499f7f 73 #
screamer 0:66f3b5499f7f 74 # Port number rationale:
screamer 0:66f3b5499f7f 75 #
screamer 0:66f3b5499f7f 76 # The Echo Protocol is a service in the Internet Protocol Suite defined
screamer 0:66f3b5499f7f 77 # in RFC 862. It was originally proposed for testing and measurement
screamer 0:66f3b5499f7f 78 # of round-trip times[citation needed] in IP networks.
screamer 0:66f3b5499f7f 79 #
screamer 0:66f3b5499f7f 80 # A host may connect to a server that supports the Echo Protocol using
screamer 0:66f3b5499f7f 81 # the Transmission Control Protocol (TCP) or the User Datagram Protocol
screamer 0:66f3b5499f7f 82 # (UDP) on the well-known port number 7. The server sends back an
screamer 0:66f3b5499f7f 83 # identical copy of the data it received.
screamer 0:66f3b5499f7f 84 SERVER_IP = str(socket.gethostbyname(socket.getfqdn()))
screamer 0:66f3b5499f7f 85 SERVER_PORT = 7
screamer 0:66f3b5499f7f 86
screamer 0:66f3b5499f7f 87 # Returning none will suppress host test from printing success code
screamer 0:66f3b5499f7f 88 server = TCPServer((SERVER_IP, SERVER_PORT), TCPEchoClient_Handler)
theotherjimmy 43:2a7da56ebd24 89 print("HOST: Listening for TCP connections: %s:%s" %
theotherjimmy 43:2a7da56ebd24 90 (SERVER_IP, str(SERVER_PORT)))
screamer 0:66f3b5499f7f 91 self.send_server_ip_port(selftest, SERVER_IP, SERVER_PORT)
screamer 0:66f3b5499f7f 92 server.serve_forever()