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?? echosvr.py(738 B)
?? echosvr.pyc(827 B)
?? echosvr.pyo(827 B)
?? finger.py(1.23 KB)
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?? mcast.py(2.16 KB)
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?? radio.py(287 B)
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?? rpython.py(713 B)
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?? rpythond.py(1.18 KB)
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?? rpythond.pyo(1.3 KB)
?? telnet.py(2.94 KB)
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?? telnet.pyo(2.1 KB)
?? throughput.py(2.04 KB)
?? throughput.pyc(2.42 KB)
?? throughput.pyo(2.42 KB)
?? udpecho.py(1.43 KB)
?? udpecho.pyc(1.98 KB)
?? udpecho.pyo(1.98 KB)
?? unicast.py(230 B)
?? unicast.pyc(456 B)
?? unicast.pyo(456 B)
?? unixclient.py(232 B)
?? unixclient.pyc(424 B)
?? unixclient.pyo(424 B)
?? unixserver.py(414 B)
?? unixserver.pyc(593 B)
?? unixserver.pyo(593 B)

Editing: udpecho.py

#! /usr/bin/python2.7

# Client and server for udp (datagram) echo.
#
# Usage: udpecho -s [port]            (to start a server)
# or:    udpecho -c host [port] <file (client)

import sys
from socket import *

ECHO_PORT = 50000 + 7
BUFSIZE = 1024

def main():
    if len(sys.argv) < 2:
        usage()
    if sys.argv[1] == '-s':
        server()
    elif sys.argv[1] == '-c':
        client()
    else:
        usage()

def usage():
    sys.stdout = sys.stderr
    print 'Usage: udpecho -s [port]            (server)'
    print 'or:    udpecho -c host [port] <file (client)'
    sys.exit(2)

def server():
    if len(sys.argv) > 2:
        port = eval(sys.argv[2])
    else:
        port = ECHO_PORT
    s = socket(AF_INET, SOCK_DGRAM)
    s.bind(('', port))
    print 'udp echo server ready'
    while 1:
        data, addr = s.recvfrom(BUFSIZE)
        print 'server received %r from %r' % (data, addr)
        s.sendto(data, addr)

def client():
    if len(sys.argv) < 3:
        usage()
    host = sys.argv[2]
    if len(sys.argv) > 3:
        port = eval(sys.argv[3])
    else:
        port = ECHO_PORT
    addr = host, port
    s = socket(AF_INET, SOCK_DGRAM)
    s.bind(('', 0))
    print 'udp echo client ready, reading stdin'
    while 1:
        line = sys.stdin.readline()
        if not line:
            break
        s.sendto(line, addr)
        data, fromaddr = s.recvfrom(BUFSIZE)
        print 'client received %r from %r' % (data, fromaddr)

main()

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Editing: udpecho.py

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