TCP UTO (RFC 5482) patch calls for review

[Rui Paulo]

On 1 Sep 2009, at 18:34, Fang Wang wrote:

> Hi,
>
> The attached patch implements TCP User Timeout Option(RFC 5482 [0]) in
> freebsd tcp stack.  And this patch comes from my GSoC 2009 project --
> Implement TCP UTO(mentor, Rui Paulo).  I will be very grateful to any
> tips, suggestions and questions.
>
> Brief introduction about TCP UTO:
>    The TCP user timeout controls how long transmitted data may remain
> unacknowledged before a connection is forcefully closed. It is a
> local, per-connection parameter. TCP User Timeout Option allows one
> end of a TCP connection to advertise it's current user timeout value.
> This information provides advice to the other end of the TCP
> connection to adapt it's user timeout accordingly. Increasing the user
> timeouts on both ends of a TCP connection allows it to survive
> extended periods without end-to-end connectivity. Decreasing the user
> timeouts allows busy servers to explicitly notify their clients that
> they will maintain the connection state only for a short time without
> connectivity.

I'm planning to commit this patch this week/weekend.

Regards,
--
Rui Paulo