a3/code/jtorx/client/helloworld.py

   1 #!/usr/bin/python
   2 from sender import Sender
   3 import sys
   4 import socket
   5
   6 JTORXPORT = 8888
   7
   8 if __name__ == "__main__":
   9     serverPort = 10000
  10     if len(sys.argv) > 1:
  11         serverPort = int(sys.argv[1])
  12     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  13     s.bind(('', JTORXPORT))
  14     s.listen(1)
  15     print 'Listening on port {} for JTorx'.format(JTORXPORT)
  16     conn, addr = s.accept()
  17     print 'Connected by JTorx at {}'.format(addr)
  18     sender = None
  19     seqnr = None
  20     response = ''
  21     while True:
  22         data = conn.recv(1024)
  23         if not data:
  24             break
  25         data = data.strip()
  26         if data == 'Listen?':
  27             sender = Sender(serverIP="127.0.0.1", networkInterface="lo", isLocal=True, serverPort=serverPort, waitTime=1, isVerbose=0)
  28             response = ''
  29         if data == 'SYN?':
  30             seqnr = 100
  31             print 'S: {}'.format(seqnr)
  32             response = sender.sendInput('S', seqnr, seqnr)
  33         if data == 'ACK?':
  34             seqnr += 1
  35             print 'A: {}'.format(seqnr)
  36             response = sender.sendInput('A', seqnr, sender.lastSeqReceived + 1)
  37         if data == 'FINACK?':
  38             seqnr += 1
  39             print 'FA: {}'.format(seqnr)
  40             response = sender.sendInput("FA", seqnr, sender.lastSeqReceived + 1)
  41         if data == 'FIN?':
  42             seqnr += 1
  43             print 'F: {}'.format(seqnr)
  44             response = sender.sendInput("F", seqnr, sender.lastSeqReceived + 1)
  45         if data == 'RST?':
  46             seqnr += 1
  47             print 'RP: {}'.format(seqnr)
  48             response = sender.sendInput("RP", seqnr, 0)
  49             sender.sendReset()
  50         if data == 'DAT?':
  51             print 'DAT: {} sending: a'.format(seqnr)
  52             response = sender.sendInput('A', seqnr, sender.lastSeqReceived + 1)
  53             response = sender.sendInput('PA', seqnr, sender.lastSeqReceived + 1, data='a\n')
  54             seqnr += 2
  55         if response:
  56             print 'response: {}'.format(response)
  57             if response == 'Timeout':
  58                 print 'data: {} - TIMEOUT!'.format(data)
  59                 conn.send('TIMEOUT!\n')
  60             elif response[0] == 'A' or response[0] == 'PA':
  61                 print 'data: {} - ACK!'.format(data)
  62                 conn.send('ACK!\n')
  63             elif response[0] == 'R':
  64                 print 'data: {} - RST!'.format(data)
  65                 conn.send('RST!\n')
  66             elif response[0] == 'SA':
  67                 print 'data: {} - SYNACK!'.format(data)
  68                 conn.send('SYNACK!\n')
  69         else:
  70             print 'data: {}'.format(data)
  71
  72     print 'closed'
  73     conn.close()
  74     exit()