Because TCP guarantees delivery, it is the protocol of choice for HTTP, FTP, SMTP, POP3, and so forth. In this tutorial, I introduce you to socket programming ... Read data from the server until ...

The differences between active and passive FTP are not relevant to our discussion of network programming here. Figure 1. The FTP protocol uses two sockets: one for control messages and one for data.

APIs, or application programming ... sockets. A software application that you’re using, say the playback controls for a video on a webpage, is like an appliance. The system that provides data ...