EmbeddedPkg: Extend NvVarStoreFormattedLib LIBRARY_CLASS

[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.2 / Demo / sockets / udpecho.py

#! /usr/bin/env python\r
\r
# Client and server for udp (datagram) echo.\r
#\r
# Usage: udpecho -s [port]            (to start a server)\r
# or:    udpecho -c host [port] <file (client)\r
\r
import sys\r
from socket import *\r
\r
ECHO_PORT = 50000 + 7\r
BUFSIZE = 1024\r
\r
def main():\r
    if len(sys.argv) < 2:\r
        usage()\r
    if sys.argv[1] == '-s':\r
        server()\r
    elif sys.argv[1] == '-c':\r
        client()\r
    else:\r
        usage()\r
\r
def usage():\r
    sys.stdout = sys.stderr\r
    print 'Usage: udpecho -s [port]            (server)'\r
    print 'or:    udpecho -c host [port] <file (client)'\r
    sys.exit(2)\r
\r
def server():\r
    if len(sys.argv) > 2:\r
        port = eval(sys.argv[2])\r
    else:\r
        port = ECHO_PORT\r
    s = socket(AF_INET, SOCK_DGRAM)\r
    s.bind(('', port))\r
    print 'udp echo server ready'\r
    while 1:\r
        data, addr = s.recvfrom(BUFSIZE)\r
        print 'server received %r from %r' % (data, addr)\r
        s.sendto(data, addr)\r
\r
def client():\r
    if len(sys.argv) < 3:\r
        usage()\r
    host = sys.argv[2]\r
    if len(sys.argv) > 3:\r
        port = eval(sys.argv[3])\r
    else:\r
        port = ECHO_PORT\r
    addr = host, port\r
    s = socket(AF_INET, SOCK_DGRAM)\r
    s.bind(('', 0))\r
    print 'udp echo client ready, reading stdin'\r
    while 1:\r
        line = sys.stdin.readline()\r
        if not line:\r
            break\r
        s.sendto(line, addr)\r
        data, fromaddr = s.recvfrom(BUFSIZE)\r
        print 'client received %r from %r' % (data, fromaddr)\r
\r
main()\r