UDP(user datagram protocol) is a communication protocol that is primarily used for establishing low-latency and loss-tolerating connection between application on the internet
- UDP sreads up transmission by enabling the transfer of data before an agreement is provided by the receiving party
- As a result,UDP is beneficial in time-sensitive communication, including voice over Internet protocol (VoIP),domain name system(DNS) lookup,& video or audio playback
- UDP provides two service not provided by the IP layer
- It provides portnumber to help distinguish different user requests and optionally a checksum capability to verify that the data arrived intact
user Datagram Protocol features:
user Datagram Protocol has attributer that make it beneficial for use with appliacationappliacation that can to lerate lost data for example
- It allows packets to be dropped and received in different order than they were transmitted making it suitable for real time appliacation wherr latency might be a concern
- It can be used transmission based protocol,such as DNS or Network Time Protocol (NTP)
- It can be used where a large number of clients are connected and where real time error correction isn't necessary such as gaming, voice or video conferencing and streaming medio
UDP header composition
The user Datagram Protocol header has four fields,each of which 2 bytes
- source port number which is the number of the sender
- destination port number the port Datagram is addressed length the length in bytes of the UDP header and any encapsulation data
- Checksum which is used in error checking, it is required in IPV6 and optional in IPV4.
