In this chapter, we will cover the following topics:

• Downloading data from an HTTP server
• Serving HTTP requests from your machine
• Extracting cookie information after visiting a website
• Submitting web forms
• Sending web requests through a proxy server
• Checking whether a web page exists with the HEAD request
• Spoofing Mozilla Firefox in your client code
• Saving bandwidth in web requests with the HTTP compression
• Writing an HTTP fail-over client with resume and partial downloading
• Writing a simple HTTPS server code with Python and OpenSSL
• Building asynchronous network applications with Twisted
• Building asynchronous network applications with Tornado
• Building concurrent applications with Tornado Future