flooding.py

#==================================README=======================================
#
#This is a DSR protocol implementation using Python.
#
#It is the project for CITS4419 - Mobile and Wireless Computing
#at The University of Western Australia.
#
#<AUTHOR> = Ash Tyndall, Asra Alshabib, Bo Chuen Chung, Dayang Abang Mordian,
#           Hui Li Leow, Max Ward, Raphael Byrne, Timothy Raphael,
#           Vincent Sun, Zhiqiang (Cody) Qiu
#
#<SUPERVISOR> = Prof. Amitava Datta
#
#<ORGANIZATION> = The University of Western Australia
#
#<YEAR> = 2013
#
#<VERSION> = V1.0
#
#===============================================================================

#=================================BSD LICENSE===================================
#
#Copyright (c) <YEAR>, <AUTHOR>
#
#All rights reserved.
#
#Redistribution and use in source and binary forms, with or without
#modification, are permitted provided that the following conditions
#are met:
#
#  - Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  - Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
#  - Neither the name of the <ORGANIZATION> nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
#IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
#THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
#PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
#CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
#EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
#PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
#LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
#NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
#SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#===============================================================================

#a basic passthrough routing engine that ensures that all messages are broadcast

import network
import threading
import socket, select

input_buffer = []
connection_list = []

def send(msg, recepient)
  for recipient in connection_list:
    try:
      recipient.send(msg)
    except:
      recipient.close()
      connection_list.remove(recipient)
  

#end def

#receive connection and append the connection to the list
def receive(port):
  input_buffer = 4096
  
  sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
  sock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
  s.bind(("0.0.0.0",port))
  sock.listen(10)'

  connection_list.append(sock)

  while 1:
    read_sockets,write_sockets,error_sockets=select(connection_list,[],[])

    for s in read_sockets:
      if s == sock:
        sockfd,addr=sock.accept()
        connection_list.append(sockfd)
        send("Sending message to %s\n" %addr, sockfd)
      else:
        try:
          data=s.recv(input_buffer)
          if data:
            send(data,s)
        except:
          send(data,s)
          s.close()
          connection_list.remove(s)
          continue
  sock.close()
#end def