PuTTY wish ip-tos

Home | FAQ | Feedback | Licence | Updates | Mirrors | Keys | Links | Team
Download: Stable · Snapshot | Docs | Changes | Wishlist

summary: Use of IP type-of-service field
class: wish: This is a request for an enhancement.
difficulty: tricky: Needs many tuits.
priority: low: We aren't sure whether to fix this or not.

We've had a very few requests for the PuTTY suite to make use of the IP type-of-service (ToS) field - apparently it does make a practical difference to a few people using traffic shapers to sort interactive/bulk traffic.

Some thought needs to be given to this: PuTTY terminal sessions are obviously `interactive' traffic, PSCP/PSFTP are `bulk', but Plink could be either depending on usage, as could random port-forwardings. Also, we may not want to leak that sort of information about an encrypted connection. So it would probably need to be configurable, and off by default.

Useful references: MS KB Q196358 and Q248611 (which indicates that on Win2K, a registry entry needs to be set to allow user programs to set the ToS).

This probably can't be set on Windows <2000.

Need to make sure we understand how one is supposed to use this field in today's world; I've a feeling that several sets of semantics may have come and gone over the years.

If you want to comment on this web site, see the Feedback page.
Audit trail for this wish.
(last revision of this bug record was at 2003-10-12 17:49:25 +0000)