1#!/usr/bin/env python 2''' 3Simple NORM file receiver example app using Python NORM API 4''' 5 6import sys, os.path 7from optparse import OptionParser 8 9import pynorm 10 11USAGE = 'usage: %s [options] <cacheDir>' % sys.argv[0] 12DEFAULT_ADDR = '224.1.2.3' 13DEFAULT_PORT = 6003 14 15def get_option_parser(): 16 parser = OptionParser(usage=USAGE) 17 parser.set_defaults(address=DEFAULT_ADDR, port=DEFAULT_PORT) 18 19 parser.add_option('-a', '--address', 20 help='The IP address to bind to (default %s)' % DEFAULT_ADDR) 21 parser.add_option('-p', '--port', type=int, 22 help='The port number to listen on (default %i)' % DEFAULT_PORT) 23 parser.add_option('-i', '--iface', 24 help='The inteface to transmit multicast on.') 25 return parser 26 27def main(argv): 28 (opts, args) = get_option_parser().parse_args(argv) 29 30 if len(args) != 2: 31 print get_option_parser().get_usage() 32 return 1 33 34 path = os.path.abspath(args[1]) 35 36 instance = pynorm.Instance() 37 instance.setCacheDirectory(path) 38 39 session = instance.createSession(opts.address, opts.port) 40 if opts.iface: 41 session.setMulticastInterface(opts.iface) 42 session.startReceiver(1024*1024) 43 44 try: 45 for event in instance: 46 if event == 'NORM_RX_OBJECT_INFO': 47 event.object.filename = os.path.join(path, event.object.info) 48 print 'Downloading file %s' % event.object.filename 49 50 elif event == 'NORM_RX_OBJECT_UPDATED': 51 print 'File %s - %i bytes left to download' % ( 52 event.object.filename, event.object.bytesPending) 53 54 elif event == 'NORM_RX_OBJECT_COMPLETED': 55 print 'File %s completed' % event.object.filename 56 return 0 57 58 elif event == 'NORM_RX_OBJECT_ABORTED': 59 print 'File %s aborted' % event.object.filename 60 return 1 61 62 else: 63 print event 64 except KeyboardInterrupt: 65 pass 66 67 print 'Exiting.' 68 return 0 69 70if __name__ == '__main__': 71 sys.exit(main(sys.argv)) 72