client.py

   1 # Copyright (C) 2008, Thomas Leonard
   2 # See the README file for details, or visit http://0install.net.
   3
   4 from logging import info, debug
   5 import socket, sys, select
   6
   7 #broadcast = ('<broadcast>', 308339)
   8 broadcast = ('localhost', 308339)
   9
  10 def fetch(digests):
  11         if not digests:
  12                 print >>sys.stderr, "No digests given!"
  13                 sys.exit(1)
  14
  15         info("Broadcasting request for %s on local network...", digests)
  16
  17         client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, 0)
  18         client.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
  19
  20         client.sendto('0share\n' + '\n'.join(digests), broadcast)
  21
  22         while True:
  23                 r = select.select([client], [], [], 1)[0]
  24                 if r:
  25                         data, addr = client.recvfrom(128)
  26                         addr = addr[0]
  27                         lines = data.split('\n')
  28                         if lines[0] == '0share-reply':
  29                                 for d in lines[1:]:
  30                                         print "%s has %s" % (addr, d)
  31                         else:
  32                                 info("Invalid reply from %s: %s", addr, repr(data))
  33                 else:
  34                         break
  35         info("No further responses for one second")