from twisted.internet.protocol import Protocol
class Echo(Protocol):
 def dataReceived(self,data):
  self.transport.writed(data)

from twisted.internet.protocol import Protocol
class QOTD(Protocol):
 def connectionMade(self):
  self.transport.write("An apple a day keeps the doctor away/r/n") 
  self.transport.loseConnection()

<span style="font-family: Monospaced; color: #0000a0;"><strong>PythonCode: </strong></span><table style="width: 100%; height: 20px;" align="center" bgcolor="#e3dfe3" border="1" bordercolor="#9da7ac" cellpadding="0" cellspacing="0"> 
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     <div class="textBackGround" style="font-family:Courier New;font-size:9pt;"><pre><span style="color: blue;">from</span> twisted.internet.protocol <span style="color: blue;">import</span> Protocol 
 <span style="color: blue;">class</span> Echo(Protocol): 
  <span style="color: blue;">def</span> connectionMade(self): 
   self.factory.numProtocols = self.factory.numProtocols+1 
   <span style="color: blue;">if</span> self.factory.numProtocols > 100: 
    self.transport.write(<span style="color: #ff44a2;">"Too many connections, <span style="color: blue;">try</span> later"</span>) 
    self.transport.loseConnection() 
  <span style="color: blue;">def</span> connectionLost(self, reason): 
   self.factory.numProtocols = self.factory.numProtocols-1 
  <span style="color: blue;">def</span> dataReceived(self, data): 
   self.transport.write(data)</pre> 
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  <span style="font-family: Monospaced; color: #0000a0;"><strong>PythonCode: </strong></span><table style="width: 100%; height: 20px;" align="center" bgcolor="#e3dfe3" border="1" bordercolor="#9da7ac" cellpadding="0" cellspacing="0"> 
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     <div class="textBackGround" style="font-family:Courier New;font-size:9pt;"><pre><span style="color: blue;">from</span> twisted.internet.protocol <span style="color: blue;">import</span> Protocol, Factory 
 <span style="color: blue;">from</span> twisted.internet <span style="color: blue;">import</span> reactor 
 <span style="color: blue;">class</span> QOTD(Protocol): 
  <span style="color: blue;">def</span> connectionMade(self): 
   self.transport.write(<span style="color: #ff44a2;">"An apple a day keeps the doctor away/r/n"</span>) 
   self.transport.loseConnection() 
  
 <span style="color: green;"># Next lines are magic:</span> 
 factory = Factory() 
 factory.protocol = QOTD 
  
 <span style="color: green;"># 8007 <span style="color: blue;">is</span> the port you want to run under. Choose something >1024</span> 
 reactor.listenTCP(8007, factory) 
 reactor.run()</pre> 
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from twisted.protocols.basic import LineReceiver
class Answer(LineReceiver):
 answers = {'How are you?': 'Fine', None : "I don't know what you mean"}
 def lineReceived(self, line):
  if self.answers.has_key(line):
   self.sendLine(self.answers[line])
  else:
   self.sendLine(self.answers[None])

from twisted.internet.protocol import Factory
from twisted.protocols.wire import Echo

myFactory = Factory()
myFactory.protocol = Echo

class QOTD(Protocol):
 def connectionMade(self):
  self.transport.write(self.factory.quote+'/r/n')
  self.transport.loseConnection()

def makeQOTDFactory(quote=None):
 factory = Factory()
 factory.protocol = QOTD
 factory.quote = quote or 'An apple a day keeps the doctor away'
 return factory

from twisted.internet.protocol import Factory
from twisted.protocols.basic import LineReceiver

class LoggingProtocol(LineReceiver):

 def lineReceived(self, line):
  self.factory.fp.write(line+'/n')


class LogfileFactory(Factory):

 protocol = LoggingProtocol

 def __init__(self, fileName):
  self.file = fileName

 def startFactory(self):
  self.fp = open(self.file, 'a')

 def stopFactory(self):
  self.fp.close()

from twisted.internet.protocol import Factory, Protocol
from twisted.internet import reactor

class QOTD(Protocol):

 def connectionMade(self):
  self.transport.write(self.factory.quote+'/r/n')
  self.transport.loseConnection()


class QOTDFactory(Factory):

 protocol = QOTD

 def __init__(self, quote=None):
  self.quote = quote or 'An apple a day keeps the doctor away'

reactor.listenTCP(8007, QOTDFactory("configurable quote"))
reactor.run()