Probably the developer thought only one of the tables are used in a Kamailio
instance, they kind of overlap a lot in purpose and functionality. Personally I
use only address table, I don't think I ever initiated a Kamailio deployment
using the trusted table.
Anyhow, because this kind of functionality seems to be needed in other places,
I added support in core for rate-limiting the execution of RPC commands to
specific time interval that can be set via the new core parameter
`rpc_exec_delta`. It is not done automatically for all commands, only for those
that are exported with `RPC_EXEC_DELTA` flag in the C code. For now I updated
the exports of RPC reload commands for `tls` and `permissions` module.
The core value is checked first, being done when the rpc command is searched to
be executed, so if it is lower than per module restriction (like in
permissions), it hits first.
The rate limiting is per command, but the time interval value is global, which
should be (good) enough for now, imo. If more flexibility would be needed, one
more thing that can be added is to make `rpc_exec_delta` updatable via rpc as
well.
The new functionality is available only in devel version, it is not a candidate
to be backported because it touches many places.
Testing and feedback is appreciated. I think this issue can be closed if no
other comments/proposals come in soon.
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