UDP
Properties
Uses Connectionless communication model.
Integrity verification - UDP checksum
Why use UDP?
Fast
In scenarios where we do not need error checking or correction, we could use it.
Otherwise in other protocols like TCP/IP , we would have extra overhead to process the packets.
Control over reliability on app level.
Attributes
- Transaction oriented - query - response
- datagrams - model ip tunneling / rpc / nfs
- simple - can bootstrap with it, without having a full protocol stack (e.g. DHCP, FTP)
- Stateless
- No retransmission delay - real-time app (VoIP, games)
- multicast support
