help3002

It's UWAweek 21 (1st semester, week 12)

help3002

This forum is provided to promote discussion amongst students enrolled in CITS3002 Computer Networks.

Please consider offering answers and suggestions to help other students! And if you fix a problem by following a suggestion here, it would be great if other interested students could see a short "Great, fixed it!" followup message. How do I ask a good question?

Chris is away until 4th June. Dr Atif Mansoor is the unit's coordinator until then.

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UWA week 19 (1st semester, week 10) ↓

handling unreliable UDP (both)

12:52pm Thu 9th May, ANONYMOUS

does "handle any issues which occur with the unreliable UDP" mean doing something such as putting sequence numbers in the packets?

handling unreliable UDP (both)

4:56pm Thu 9th May, Christopher M.

ANONYMOUS wrote:

> does "handle any issues which occur with the unreliable UDP" mean doing something such as putting sequence numbers in the packets?

There's a past discussion on this here: [help3002]⬈ The unreliability of UDP needs to be addressed so that any lost datagrams do not prevent a query being answered. The use of sequence numbers could be used to address this but, as there's no natural *sequence* to the datagrams, you'd probably just employ a monotonically increasing (unique) value. Moreover, as the queries are independent of each other, it's unclear how a receiver should react to a 'missing' datagram, because it should still accept later datagrams before the missing one arrives.