2Basics
Tip 1: Understand the Difference between Connected and Connectionless Protocols
One of the most fundamental notions in network programming is that of connection-oriented versus connectionless protocols. Although there is nothing intrinsically difficult about the distinction, it is a frequent cause of confusion among those new to network programming. Part of the problem is a matter of context: Obviously two computers must be “connected” in some sense if they are to communicate, so what does “connectionless communication” mean?
The answer is that connection-oriented and connectionless refer to protocols. That is, the terms are applied to how we transfer data over a physical medium, not to the physical medium itself. Connection-oriented ...
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