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

Jun 7, 2025 · The reactor is the core of the event loop within Twisted – the loop which drives applications using Twisted. The event loop is a programming construct that waits for and dispatches …

stdiodemo.py - example using stdio, Deferreds, LineReceiver and twisted.web.client. ptyserv.py - serve shells in pseudo-terminals over TCP courier.py - example of interfacing to Courier’s mail filter …

Installing Twisted ¶ Installing Optional Dependencies: documentation on how to install Twisted’s optional dependencies.

It also assumes you are familiar with the basic concepts of HTTP, such as requests and responses, methods, headers, and message bodies. The HTTPS section of this document also assumes you are …

Twisted strives to make the nature of the “wire” as transparent as possible, with highly abstract interfaces for passing and receiving data, such as ITransport and IProtocol.

(source) Twisted: The Framework Of Your Internet.

The major tool that manages Twisted applications is a command-line utility called twistd. twistd is cross platform, and is the recommended tool for running Twisted applications.

from twisted.application import service, strports from twisted.internet import protocol, reactor, defer from twisted.protocols import basic class FingerProtocol(basic.LineReceiver): def lineReceived(self, user): …

It is a common mistake to think that because Twisted can manage multiple connections at once, things are happening in multiple threads, and so you need to carefully manage locks. Lucky for you, …