On 6 aug 2008, at 22:45, Spencer Dawkins wrote:
Real-time traffic, including online games, VoIP,
videoconferencing, relies
heavily on UDP, if only to avoid TCP head-of-line blocking.
Huh? Head of line blocking?
TCP provides a reliable, stream-oriented service - so if you drop a
packet, none of the packets that follow the dropped packet can be
delivered to the application until the dropped packet is
retransmitted and received. So, the sequence number gap blocks all
subsequent delivery until that happens.
Oh, right. It read like TCP packets would be stuck in router
buffers... I wasn't aware that the term head of line blocking was also
used in an end-to-end context.
_______________________________________________
Int-area mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/int-area
