For the life of me I cant figure out why this exception is being thrown. How could I use pdb to debug this?
$ python udp_local2.py server File "udp_local2.py", line 36 except: ^ SyntaxError: invalid syntax #!/usr/bin/env python import random, socket, sys s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) MAX = 65535 PORT = 1060 if 2 <= len(sys.argv) <= 3 and sys.argv[1] == 'server': interface = sys.argv[2] if len(sys.argv) > 2 else '' s.bind((interface, PORT)) print 'Listening at', s.getsockname() while True: data, address = s.recvfrom(MAX) if random.randint(0, 1): print 'The client at', address, 'says:', repr(data) s.sendto('Your data was %d bytes' % len(data), address) else: print 'Pretending to drop packet from', address elif len(sys.argv) == 3 and sys.argv[1] == 'client': hostname = sys.argv[2] s.connect((hostname, PORT)) print 'Client socket name is', s.getsockname() delay = 0.1 while True: s.send('This is another message') print 'Waiting up to', delay, 'seconds for a reply' s.settimeout(delay) try: data = s.recv(MAX) except socket.timeout: delay *= 2 if delay > 2.0: raise RuntimeError('I think the server is down') except: raise else: break print 'The server says', repr(data) else: print >> sys.stderr, 'usage: %d server [<interfae>]' % sys.argv[0] print >> sys.stderr, ' or: %d client <host>' % sys.argv[0] sys.exit(2)
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