The User Datagram Protocol
This lesson gives an introduction to one of the protocols at the heart of the transport layer: UDP!
We'll cover the following...
What is UDP?
UDP, or User Datagram Protocol, is a transport layer protocol that works over the network layer’s famous Internet protocol (which we’ll look at in-depth in the next chapter). RFC 768 is the official RFC for UDP.
How It Works
UDP does not involve any initial handshaking like TCP does, and is hence called a connectionless protocol. This means that there are no established ‘connections’ between hosts.
UDP prepends the source and destination ports to messages from the application layer and hands them off to the network ...