Book Image

Learning Python Networking - Second Edition

By : José Manuel Ortega, Dr. M. O. Faruque Sarker, Sam Washington
Book Image

Learning Python Networking - Second Edition

By: José Manuel Ortega, Dr. M. O. Faruque Sarker, Sam Washington

Overview of this book

Network programming has always been a demanding task. With full-featured and well-documented libraries all the way up the stack, Python makes network programming the enjoyable experience it should be. Starting with a walk through of today's major networking protocols, through this book, you'll learn how to employ Python for network programming, how to request and retrieve web resources, and how to extract data in major formats over the web. You will utilize Python for emailing using different protocols, and you'll interact with remote systems and IP and DNS networking. You will cover the connection of networking devices and configuration using Python 3.7, along with cloud-based network management tasks using Python. As the book progresses, socket programming will be covered, followed by how to design servers, and the pros and cons of multithreaded and event-driven architectures. You'll develop practical clientside applications, including web API clients, email clients, SSH, and FTP. These applications will also be implemented through existing web application frameworks.
Table of Contents (19 chapters)
Free Chapter
1
Section 1: Introduction to Network and HTTP Programming
4
Section 2: Interacting with APIs, Web Scraping, and Server Scripting
9
Section 3: IP Address Manipulation and Network Automation
13
Section 4: Sockets and Server Programming

Learning the POP3 protocol and retrieving emails with poplib

In this section, we will learn about the POP3 protocol and explore the poplib library and how to work with emails with POP3 in Python 3.7.

Understanding the POP3 protocol

POP3 is a protocol that allows email clients to obtain email messages that are stored on a remote server. It is an application-level protocol in the OSI model. The stored email messages can be downloaded and read by the local computer. The POP3 protocol can be used to download these messages from the email server.

POP3 is designed to receive emails, not to send them; it allows users with intermittent or very slow connections (such as modem connections) to download their emails while they have a...