Stephen Turner wrote:
>On Tue, 11 Apr 2000, Jeremy Wadsack wrote:
>> Real Audio uses a different protocol that HTTP, so it won't be
>> tracked in the Apache logs (other than the initial request for the
>> .ram file). In fact, I think it uses UDP rather than TCP for streaming
>> content (because UDP packets are in an expected order).
>
>And presumably because they don't want to back off just because the network
>is getting congested, and share the available bandwidth among the competing
>users, as TCP would.
To put a slightly more positive spin on this, UDP doesn't guarantee
delivery, so when a packet is dropped, it isn't resent, and there is no need
to notify the server that each packet has been received. Protocols using TCP
don't "back off" as such, they just keep trying until the data gets through.
For streaming media, the data may be "stale" by the time a retry delivers
it.
Aengus
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