Commit Graph

12 Commits

Author SHA1 Message Date
Adam Ierymenko
226123ca08 Refactor controller to permit sending of pushes as well as just replies to config requests. 2016-11-10 11:54:47 -08:00
Adam Ierymenko
2ba9343607 Encode and decode of tags and capabilities in NetworkConfig. 2016-08-09 08:32:42 -07:00
Adam Ierymenko
b2d048aa0e Make Dictionary templatable so it can be used where we want a higher capacity. 2016-06-21 07:32:58 -07:00
Adam Ierymenko
e09c1a1c11 Big refactor mostly builds. We now have a uniform backward compatible netconf. 2016-06-16 12:28:43 -07:00
Adam Ierymenko
8b9519f0af Simplify a bunch of NetworkConfig stuff by eliminating accessors, also makes network controller easier to refactor. 2016-05-06 16:13:11 -07:00
Adam Ierymenko
4e4fd51117 boring doc stuff 2016-01-12 14:04:55 -08:00
Adam Ierymenko
0d386f1c31 Add a bit of useful testing instrumentation to SqliteNetworkController. 2015-09-08 11:35:55 -07:00
Adam Ierymenko
b3516c599b Add a rate limiting circuit breaker to the network controller to prevent flooding attacks and race conditions. 2015-07-23 10:10:17 -07:00
Adam Ierymenko
3ba54c7e35 Eliminate some poorly thought out optimizations from the netconf/controller interaction,
and go ahead and bump version to 1.0.4.

For a while in 1.0.3 -dev I was trying to optimize out repeated network controller
requests by using a ratcheting mechanism. If the client received a network config
that was indeed different from the one it had, it would respond by instantlly
requesting it again.

Not sure what I was thinking. It's fundamentally unsafe to respond to a message
with another message of the same type -- it risks a race condition. In this case
that's exactly what could happen.

It just isn't worth the added complexity to avoid a tiny, tiny amount of network
overhead, so I've taken this whole path out.

A few extra bytes every two minutes isn't worth fretting about, but as I recall
the reason for this optimization was to save CPU on the controller. This can be
achieved by just caching responses in memory *there* and serving those same
responses back out if they haven't changed.

I think I developed that 'ratcheting' stuff before I went full time on this. It's
hard to develop stuff like this without hours of sustained focus.
2015-07-23 09:50:10 -07:00
Adam Ierymenko
ea1859541c More cleanup, and fix for the extremely unlikely case of identity collision. 2015-04-15 18:32:25 -07:00
Adam Ierymenko
f7b1437154 Putting the main binary back together... 2015-04-15 17:00:26 -07:00
Adam Ierymenko
6369c264e2 Rename netconf to controller and NetworkConfigMaster to NetworkController for consistency. 2015-04-15 15:12:09 -07:00