Chapter 10. User Datagram Protocol
User Datagram Protocol (UDP) is a simple alternative to TCP. UDP is a connectionless service, it does not establish a connection, in contrast to TCP. The source party sends a UDP datagram to the destination party and then stops worrying about the datagram getting lost (this is a job for the application protocol).
UDP datagrams are enveloped in an IP datagram as shown in the following figure:
As you can see from the figure above, a UDP header is very simple. It contains the numbers of both the source and destination ports completely analogous to TCP. Again, it is important to mention ...