Hands-On Network Programming with C# and .NET Core

Sockets and Ports

At this point, we understand how to handle data streams from remote hosts, process those streams asynchronously on background threads, and handle the errors that arise from processing that data. Now we're going to look at the most primitive connections you can make with a remote host. In this chapter, we'll be looking at the physical ports through which your machine is going to do this, and we'll be looking at the concept of a socket: the software structure that exposes access to a port for network interaction. We'll examine the WinSocks library for instantiating and working with those ports, and we'll consider the various ways sockets can be leveraged by your application code for efficient, low-level communication with ...