Introduction
This chapter covers two major topics. The first one is HTTP protocol implementation. The second is the usage of SSL/TLS protocol. Let's briefly examine each of them.
The HTTP protocol is an application layer protocol operating on the top of TCP protocol. It is widely used on the Internet, allowing client applications to request particular resources from the servers, and servers to transmit the requested resources back to the clients. Besides, HTTP allows clients to upload data and send commands to the server.
The HTTP protocol assumes several models or methods of communication, each designed for a specific purpose. The simplest method called GET assumes the following flow of events:
- The HTTP client application (for example, a web browser) generates a request message containing information about a particular resource (residing on the server) to be requested and sends it to the HTTP server application (for example, a web server) using TCP as a transport level protocol.
- The...
