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- """
- mbed SDK
- Copyright (c) 2011-2013 ARM Limited
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
- """
-
- import sys
- import socket
- from sys import stdout
- from SocketServer import BaseRequestHandler, UDPServer
-
- class UDPEchoClient_Handler(BaseRequestHandler):
- def handle(self):
- """ One handle per connection
- """
- data, socket = self.request
- socket.sendto(data, self.client_address)
- if '{{end}}' in data:
- print
- print data
- else:
- sys.stdout.write('.')
- stdout.flush()
-
- class UDPEchoClientTest():
-
- def send_server_ip_port(self, selftest, ip_address, port_no):
- c = selftest.mbed.serial_readline() # 'UDPCllient waiting for server IP and port...'
- if c is None:
- selftest.print_result(selftest.RESULT_IO_SERIAL)
- return
- selftest.notify(c.strip())
-
- selftest.notify("HOST: Sending server IP Address to target...")
- connection_str = ip_address + ":" + str(port_no) + "\n"
- selftest.mbed.serial_write(connection_str)
-
- c = selftest.mbed.serial_readline() # 'UDPCllient waiting for server IP and port...'
- if c is None:
- self.print_result(selftest.RESULT_IO_SERIAL)
- return
- selftest.notify(c.strip())
- return selftest.RESULT_PASSIVE
-
- def test(self, selftest):
- # We need to discover SERVEP_IP and set up SERVER_PORT
- # Note: Port 7 is Echo Protocol:
- #
- # Port number rationale:
- #
- # The Echo Protocol is a service in the Internet Protocol Suite defined
- # in RFC 862. It was originally proposed for testing and measurement
- # of round-trip times[citation needed] in IP networks.
- #
- # A host may connect to a server that supports the Echo Protocol using
- # the Transmission Control Protocol (TCP) or the User Datagram Protocol
- # (UDP) on the well-known port number 7. The server sends back an
- # identical copy of the data it received.
- SERVER_IP = str(socket.gethostbyname(socket.getfqdn()))
- SERVER_PORT = 7
-
- # Returning none will suppress host test from printing success code
- server = UDPServer((SERVER_IP, SERVER_PORT), UDPEchoClient_Handler)
- print "HOST: Listening for UDP connections..."
- self.send_server_ip_port(selftest, SERVER_IP, SERVER_PORT)
- server.serve_forever()
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