Pastable version of Twisted tcp client

<pre class='prettyprint' language='python'>#!/usr/bin/env python

from twisted.internet.protocol import ClientCreator, Protocol
from twisted.protocols.basic import LineReceiver
from twisted.internet import reactor
import sys

class Sender(Protocol):
    def sendCommand(self, command):
        print &quot;invio&quot;, command
        self.transport.write(command)

def dataReceived(self, data):
        print &quot;DATA&quot;, data

PORT = 5005
HOST = 'localhost'

def sendCommand(command):
    def test(d):
        print &quot;Invio -&gt;&quot;, command
        d.sendCommand(command)
    c = ClientCreator(reactor, Sender)
    c.connectTCP(HOST, PORT).addCallback(test)

if __name__ == '__main__':
    if len(sys.argv) != 2 or sys.argv[1] not in ['stop', 'next_call', 'force']:
        sys.stderr.write('Usage: %s: {stop|next_call|force}\n' % sys.argv[0])
        sys.exit(1)
    sendCommand(sys.argv[1]+'\n')
    reactor.run()</pre>
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Pastable version of Twisted tcp client