UDP max datagram size

Iain King iainking at gmail.com
Wed Apr 12 05:27:21 EDT 2006


Heiko Wundram wrote:
> Am Mittwoch 12 April 2006 10:26 schrieb Iain King:
> > Hi.  I've been looking everywhere for this and can't find it, apologies
> > if I'm being obtuse:  How do I set the max datagram packet size?  I'm
> > using the socket module.  It seem like it's hardcoded at 255, but I
> > need it to be larger.
>
> The minimal size any IP-stack has to be able to handle is 512 bytes. Normally,
> modern IP stacks will handle packets up to 4096 bytes and possibly larger
> packets (with correct fragmentation and rejoining). But this depends on the
> IP stack that's used to send and to receive the packet.
>
> Anyway, a maximum size of 255 bytes is certainly not true for UDP packets.
> 
> --- Heiko.

Yep, I was just being dumb.  Thanks anyway.

Iain




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