a2/code/client/helloworld.py

   1 #!/usr/bin/python
   2 from sender import Sender
   3 import sys
   4
   5 if __name__ == "__main__":
   6     serverPort = 10000
   7     if len(sys.argv) > 1:
   8         serverPort = int(sys.argv[1])
   9     sender = Sender(serverIP="127.0.0.1", networkInterface="lo", isLocal=True, serverPort=serverPort, waitTime=1, isVerbose=1)
  10     # isLocal is True if the interface is a local one
  11     response = sender.sendInput("S", 100, 100)
  12
  13     # triggers the response SA _ 101 if the server is listening on the specified port
  14     # if the server isn't listening, there are no responses
  15     print sender.lastAckReceived
  16     print sender.isTimeout
  17
  18     # an example for the echo handling server
  19     if sender.isTimeout == False: # in case something was received
  20         sender.sendInput("A", 101, sender.lastSeqReceived + 1) # connection is established
  21         sender.sendInput("A", 101, sender.lastSeqReceived + 1, data = "Hello world!") # send some data
  22         sender.sendInput("FA", 103, sender.lastSeqReceived + 1) # close connection (the echo also closes)
  23         sender.sendInput("RP", 104, 0) # reset connection
  24
  25     sender.sendReset() # switch sender port
  26     print 'Succes!'