[syslinux] pxelinux implementation questions
H. Peter Anvin
hpa at zytor.com
Fri Jun 20 16:02:37 PDT 2003
Alexander Sack wrote:
>
> Hmmm. Does the tftp daemon that runs on the boot server have to deal
> with wrap around issues at all?
>
Yes, it does.
>
> Basically you would just keep on ACKing until you hit a payload of under
> 512 bytes meaning your done, right? I just got confused because I
> didn't see any code regarding wrap around issues!
>
Yep. Usually the wraparound is dealt with "automatically."
> The other issue that I'm looking at is using PXE to download an
> arbitraty block of a file. In other words I want to download one sector
> at 33MB of a 34MB file. I was looking at searchdir() just to get some
> ideas if this can even be done!
Nope, can't be done. Not without a completely new protocol; perhaps a
"random access" extension to TFTP.
> Yes, I definitely feel your pain when it comes to mtftp pxelinux!
-hpa
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