Differences between current version and previous revision of UDP.
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| Newer page: | version 3 | Last edited on Wednesday, August 20, 2003 3:30:46 pm | by PerryLorier | |
| Older page: | version 2 | Last edited on Sunday, August 4, 2002 5:04:48 pm | by PerryLorier | Revert |
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[Acronym] for __U__ser __D__ata __P__rotocol. See UserDatagramProtocol
Basically multiuser [IP], over the top of [IP] it adds the concepts of "ports". [UDP] is an unreliable service, packets may arrive out of order, not at all, or, in some cases corrupted[1].
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+|00|01|02|03|04|05|06|07|08|09|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31
+||||||||||||||||||||||||||||||||^ [IPv4] / [IPv6] Header with protocol 0x11 (17)
+||||||||||||||||Source Port||||||||||||||||Destination Port
+||||||||||||||||Length||||||||||||||||Checksum
+||||||||||||||||||||||||||||||||v Payload
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[1]: Yes, only if you disable the checksums, but some people do this per host, so you can't rely on it being set on your machine. Sigh.
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CategoryProtocols
