In this chapter, we learned about sockets, which are used for bi-directional client-server communication. We learned about three internet modules: http, ftplib, and urllib. The http package has modules for the client and server: http.client and http.server respectively. Using ftplib, we downloaded files from another machine. We also looked at welcome messages and sending send commands.

In the next chapter, we'll be covering building and sending emails. We will learn about message formats and adding multimedia content. Also, we are going to learn about SMTP, POP, and IMAP servers.