Re: UDP checksum calculation - uses lenght twice ?

But I wrote *why* you need that : if your packet went to other IP ( machine
e.g. router too ) by mistake that checksum ( only routing data ) will tell
that destination is wrong . That used both in TCP and UDP the same and if
you see my messages ( as others ) and I see yours - sure that done OK :)

Arkady

"R.Wieser" <address@xxxxxxxxxxxxx> wrote in message
news:OKL7qaA9FHA.4076@xxxxxxxxxxxxxxxxxxxxxxx
> Arkady Frenkel <arkadyf@xxxxxxxxxxxxxxxx> schreef in berichtnieuws
> e7DADr#8FHA.2192@xxxxxxxxxxxxxxxxxxxxxxx
>
> Hello Arkady,
>
>> Additionally , on RFC793 that starts on last line of page 15 and continue
> to
>> page 16 :
>>
>> The checksum also covers a 96 bit pseudo header conceptually
>
> Thanks for your responses. Yes, I saw that one too. However, none of
> the
> "this is how you calculate the checksum for ...." tell me anything about
> the
> *why* of using the UDP-length double :-( :-)
>
> By the way : the sending & recieving of the UDP-packets to/from a
> Windows-machine goes o.k., so I guess the checksum-calculation is o.k too.
> :-)
>
> Regards,
> Rudy Wieser
>
>
>


.

Relevant Pages