[sr-dev] [kamailio/kamailio] Keepalive module - prototype (#1045)

[Guillaume Bour]

Hi all,   

Here is a prototype of Keepalive module I discussed on the mailing-list.
It can work standalone:
- destinations are set statically as module parameters
- *is_alive()* function allows to check destination state

It can also be used alongside with drouting module (currently only with sort_order 0)
- all destinations defined in drouting module are automatically monitored when drouting *enable_keepalive* option is set to 1
- unavailable destinations are ignored when calling do_routing() function

All comments are welcome

Thanks,
Guillaume
You can view, comment on, or merge this pull request online at:

  https://github.com/kamailio/kamailio/pull/1045

-- Commit Summary --

  * keepalive: module skeleton
  * keepalive: modularization, allow to specify more than one destination
  * keepalive: event routes
  * keepalive: module modularization
  * keepalive: adapt to trunk/5.0 branch
  * keepalive: attached informations related to destinations
  * keepalive: basic rpc interface
  * keepalive: remove ka_destination_list from api (not exported)
  * drouting: register destinations in keepalive module
  * keepalive: triggers events routes on state change only
  * drouting: refactoring
  * keepalive: support callback function on destination registration
  * drouting: register destination with callback
  * drouting: on do_routing() function, discard unavailable destinations
  * keepalive: checking uri format when adding destination
  * keepalive: *ping_interval* parameter to setup delay between destinations keepalives (default 30secs)
  * keepalive: ping considered successful if received 2XX response
  * keepalive: added is_alive(dest) function to check monitored destination status

-- File Changes --

    M src/modules/drouting/dr_load.c (3)
    M src/modules/drouting/drouting.c (58)
    M src/modules/drouting/prefix_tree.h (4)
    M src/modules/drouting/routing.c (2)
    A src/modules/keepalive/Makefile (18)
    A src/modules/keepalive/api.h (74)
    A src/modules/keepalive/keepalive.h (86)
    A src/modules/keepalive/keepalive_api.c (138)
    A src/modules/keepalive/keepalive_core.c (203)
    A src/modules/keepalive/keepalive_mod.c (193)
    A src/modules/keepalive/keepalive_rpc.c (101)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/1045.patch
https://github.com/kamailio/kamailio/pull/1045.diff

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