108 lines
2.9 KiB
Python
Executable File
108 lines
2.9 KiB
Python
Executable File
#!/usr/bin/env python
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'''
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Simple NORM file receiver example app using Python NORM API
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Shows off streaming with a super simple chat app.
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'''
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import sys
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import os.path
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import curses
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import curses.textpad
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from threading import Thread
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from optparse import OptionParser
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from random import randint
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import pynorm
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from pynorm.extra.manager import Manager, StopManager
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USAGE = 'usage: %s [options] name' % sys.argv[0]
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DEFAULT_ADDR = '224.1.2.3'
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DEFAULT_PORT = 6003
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def get_option_parser():
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parser = OptionParser(usage=USAGE)
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parser.set_defaults(address=DEFAULT_ADDR, port=DEFAULT_PORT)
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parser.add_option('-a', '--address',
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help='The IP address to bind to (default %s)' % DEFAULT_ADDR)
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parser.add_option('-p', '--port', type=int,
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help='The port number to listen on (default %i)' % DEFAULT_PORT)
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parser.add_option('-i', '--iface',
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help='The inteface to transmit multicast on.')
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return parser
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def main(argv):
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(opts, args) = get_option_parser().parse_args(argv)
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if len(args) != 2:
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print get_option_parser().get_usage()
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return 1
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instance = pynorm.Instance()
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session = instance.createSession(opts.address, opts.port)
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if opts.iface:
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session.setMulticastInterface(opts.iface)
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session.startReceiver(1024*1024)
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session.startSender(randint(0, 1000), 1024**2, 1400, 64, 16)
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stream = session.streamOpen(1024*1024)
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gui = Gui(stream, args[1])
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manager = Manager(instance)
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manager.register(pynorm.NORM_RX_OBJECT_UPDATED,
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lambda e: gui.showText(e.object.streamRead(1024)[1]))
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# manager.register(pynorm.NORM_RX_OBJECT_INFO,
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# lambda e: gui.showText('%s joined the chat' % e.object.info))
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manager.start()
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try:
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curses.wrapper(gui)
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except KeyboardInterrupt:
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pass
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print 'Exiting...'
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stream.streamClose(True)
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instance.stop()
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manager.join()
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return 0
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class Gui(object):
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def __init__(self, stream, name):
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self.stream = stream
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self.name = name
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self.curline = 0
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def __call__(self, stdscr):
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self.stdscr = stdscr
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maxy, maxx = stdscr.getmaxyx()
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self.chatwin = curses.newwin(maxy - 2, maxx, 0, 0)
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self.chatwin.scrollok(True)
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typewin = curses.newwin(1, maxx, maxy-1, 0)
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textbox = curses.textpad.Textbox(typewin)
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while True:
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self.send(textbox.edit())
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typewin.erase()
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def send(self, text):
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msg = '%s: %s' % (self.name, text)
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self.stream.streamWrite(msg)
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self.stream.streamFlush(True)
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self.showText(msg)
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def showText(self, msg):
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maxy, maxx = self.stdscr.getmaxyx()
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if self.curline >= maxy:
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self.curline = maxy - 1
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self.chatwin.addstr(self.curline, 0, msg)
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self.curline += 1
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self.chatwin.refresh()
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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