On 23 Jul 2015, at 11:10, Richard Mortier <[email protected]> wrote: > > On 23 July 2015 at 10:53, Jeremias Blendin <[email protected]> wrote: >> >> I am looking for a TCP/IP userland implementation to use as a >> foundation for a TCP session transfer system (transfer as in Server1 >> -> Server2). I want to freeze the TCP stack, dump its state, move the >> state to another server and rebuild the session from the dumped state. >> >> Any ideas/hints if implementing this functionality with Mirage TCP/IP >> makes sense or is even possible? > > All things are possible, to some extent :) > > That's actually something we've discussed -- Mindy Preston was > starting to work on it. The approach we were taking was roughly to use > Irmin to serialise state -- a first prototype doing this for ARP is at > https://github.com/yomimono/irmin-arp. Extending this to the full > TCP/IP stack is definitely an interesting thing to try! (And now that > Irmin has more Xen support, it should be possible to push it forwards > too.)
Yep -- pickling the TCP state should be fairly straightforward, since most of the stack supports s-expression converters. The trick is reconstructing it and ensuring that all the right hooks (such as timers) are all fired as a result. What sort of userland API did you have in mind for your application? Do you mind linking directly against the OCaml TCP/IP stack? -anil _______________________________________________ MirageOS-devel mailing list [email protected] http://lists.xenproject.org/cgi-bin/mailman/listinfo/mirageos-devel
