French versionSpanish versionEnglish versionSign up for free (lost password?)
- Friday August 29, 2008 - 7:48:05 am BST
- registered : 943816
- online : 19150
- questions/day : 4505
- Answer rate : 83.65%
At what layer of the osi model do the tcp and udp operate Bootp tcp udp dhcp Cannot install windows udpates register dll Emule tcp udp Firewall protect udp port 23456 How to block port tcp/udp in firewall Internet explorer not connected udp port scan 192.168.0.1 Operating system is trying to establish udp connection with ip UdpPlus
Options They need your help
- 04:57 share internet connection winxp and... (Network)
- 03:33 Running application wihout log in (Programming)
- 02:55 i cant open any folders (Linux/Unix)
- 28/08 Zu Online (Video games)
- 28/08 Rows and Columns RC[7] (Programming)
- 28/08 compare cell a1 to entire A col in... (Office software)
Internet
Advanced :
|
Characteristics of the UDP protocol
The UDP protocol (User Datagram Protocol) is a connectionless orientated protocol of the transport layer of the TCP/IP model. This protocol is very simple given that it does not provide error detection (it is not connection orientated...).
The UDP segment header is therefore very simple:
(16 bits): |
(16 bits): |
(16 bits) |
(16 bits) |
(variable length) |
|
Meanings of the different fields
- Source port: this is the port number relating to the originator application of the UDP segment. This field represents a response address for the recipient. So, this field is optional, which means that if the source port is not specified the 16 bits of this field will be set to zero, in which case the recipient will not be able to respond (this is not strictly necessary, in particular for one way messages).
- Destination port: This field contains the port corresponding to the application on the recipient machine to which it is sent.
- Length: This field specifies the total length of the segment, header included, however, the header has a length of 4 x 16 bits (which is 8x8 bits) so the field length is necessarily greater than or equal to 8 bytes.
- Checksum: This is a checksum conducted in such a way as to be able to check the integrity of the segment.
Software found in the relevant downloads
More freeware about « UDP »
 | MediaCoder - MediaCoder is a free universal batch media transcoder, which nicely integrates most popular audio/video codecs and tools... | Category: Video editing License: Open Source |