Re: [tkined] udp, tcl, and retry code help?

From: Doug Hughes (Doug.Hughes@Eng.Auburn.EDU)
Date: Fri Jun 16 2000 - 15:32:29 MET DST

>Doug Hughes wrote:
>> >
>> >There must be some way to do this and hopefully something simple that
>> >I've overlooked.
>> >
>> I've got a clean-room tcl udp implementation based partly
>> on Juergen's but mostly on the old tcludp 1.0 package.
>> I've made it asynchronous, so you can use fileevent to
>> receive stuff. Also, you can use fconfigure $udp -remote
>> to get the address of the remote.
>> If you're interested, let me know.
>Yes, but how do you handle retries? Sending and receiving is not an
>issue. I even know where its going or came from. The tricky part is
>once its left, how do I kick off a timer for the acknowledgement? And
>when that timer fires, how will I know which timer fired since I may
>have quite a few timers active at once?

That's an algorithmic issue. As somebody else mentioned, the
Tannenbaum book has good stuff on this (or most other college
level networking books)

Sorry I misunderstood your issue.

>I don't want to rewrite the packet engine with your libs if I'm still
>back wondering how to do the retries.


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