Python + PHP Socket connection

client.php

<?php

$socket = fsockopen('localhost', 8888);
$greeteng = trim(fread($socket, 2048));

for ($i=0; $i<100; $i++)
{
	$message = array('return'=>"Line: $i");
	$bt = fwrite($socket, json_encode($message)."\r\n");

	if (!$bt) {
		print "Host is down!\r\n";
		exit;
	}

	$result = fread($socket, 2048);
	var_dump(trim($result));

	usleep(700000);
}

service.py

from twisted.internet import protocol, reactor
from twisted.protocols.basic import LineReceiver
import json

class commander(LineReceiver):

    def connectionMade(self):
        self.sendLine("Connected")

    def lineReceived(self, line):
        try:
            jstring = json.loads(line.decode('utf-8'))
            if 'return' in jstring:
                self.sendLine(jstring['return'].encode('utf-8'))
            else:
                raise BaseException(message="Wrong Format")
        except BaseException as ex:
            self.sendLine(ex.message)
            self.connectionLost()


class Factory(protocol.Factory):

    def buildProtocol(self, addr):
        return commander()


#run
reactor.listenTCP(8888, Factory())
reactor.run()