[Jool-list] Where are jool's sessions saved?

[Alberto Leiva]

> Where are jool's sessions saved?

Nowhere, presently. They are kept in the RAM.

> would it be of interest
> to integrate jool's session support into our new daemon?

Well, Jool presently pushes sessions to anyone listening on its
Generic Netlink family if the `ss-enabled` global is true.
And a daemon can similarly get the full table by performing the same
Netlink request `jool session display` does under the hood.

You can get access to these functions by importing Jool's Netlink
library (https://github.com/NICMx/Jool/tree/master/src/usr/nl).
Though, if you're using Debian, is presently exported privately into
the package. But this could be upgraded with some work, and I don't
see any objections for doing this.

Here's the sample usage for querying the whole table:

- Initialization:
https://github.com/NICMx/Jool/blob/master/src/usr/argp/wargp/session.c#L112-L114
- Request: https://github.com/NICMx/Jool/blob/master/src/usr/argp/wargp/session.c#L127-L128
(You want to do this three times if you want all three protocols.)
- Response handler:
https://github.com/NICMx/Jool/blob/master/src/usr/argp/wargp/session.c#L55-L100

Am I answering your question?

On Fri, Mar 6, 2020 at 10:54 AM Nico Schottelius
<nico.schottelius at ungleich.ch> wrote:
>
>
> Good morning list,
>
> we at ungleich are currently looking into writing a replacement for
> conntrackd that works in IPv6 only environments.
>
> The basic concept is "get sessions, multicast them, from time to time
> multicast the whole session table" - which plus/minus should be able to
> create a multi master setup in the end.
>
> My question and reason why I post this here is: would it be of interest
> to integrate jool's session support into our new daemon? From my point
> of view jool's session entries are very similar in nature and thus we
> could implement this as well - or even use joold as a basis.
>
> Looking forward to what you think about this.
>
> Best regards,
>
> Nico
>
>
>
> --
> Modern, affordable, Swiss Virtual Machines. Visit www.datacenterlight.ch
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