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The Twisted Book

What is Twisted?

Twisted is an event-driven networking engine written in Python and licensed under the MIT license.


Easily Implement Custom Servers and Clients

Twisted makes it easy to implement servers. Here's a TCP server that echoes back everything that's written to it:

from twisted.internet import protocol, reactor

class Echo(protocol.Protocol):
    def dataReceived(self, data):
        self.transport.write(data)

class EchoFactory(protocol.Factory):
    def buildProtocol(self, addr):
        return Echo()

reactor.listenTCP(1234, EchoFactory())
reactor.run()

Learn more about writing servers, writing clients and the core networking libraries, including support for SSL, UDP, scheduled events, unit testing infrastructure, and much more.


Scalable Web Applications

Twisted includes scalable, event-driven HTTP support. Here's a sample web application:

from twisted.web import server, resource
from twisted.internet import reactor

class HelloResource(resource.Resource):
    def render_GET(self, request):
        request.setHeader("content-type", "text/plain")
        return "Hello, world!"

reactor.listenTCP(8080, server.Site(HelloResource()))
reactor.run()

Learn more about web application development and Twisted's HTTP client.


And More!

Twisted also supports many common network protocols, including SMTP, POP3, IMAP, SSHv2, and DNS. Fore more information see our documentation and API reference.


General Information:

More Useful Pointers:




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