Differences between version 3 and predecessor to the previous major change of URG.
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| Newer page: | version 3 | Last edited on Monday, March 8, 2004 1:14:59 am | by PerryLorier | Revert |
| Older page: | version 2 | Last edited on Sunday, March 7, 2004 4:42:25 pm | by CraigBox | Revert |
@@ -1,5 +1,3 @@
A flag set in a [TCP] header to define that the packet contains __URG__ent data.
-QualityOfService mechanisms can then be used
to ensure that
this packet
is routed along quicker links,
not dropped
in a congested network, etc.
-
-However
, it's much like the "Priority: High" flag in MicrosoftOutlook
, if everyone sets it, it gets devalued
.
+Contrary
to popular belief
this is not used
in QualityOfService
, but is used to tell a TCP reciever that there is urgent data further along the stream so they may wish to drop all data until
it's recieved (for instance). Very few protocols use this feature
, Telnet being basically the only one I am aware of
.
