Type Of Change

• New feature (non-breaking change which adds new functionality)

Checklist:

• PR should be backported to stable branches
• Tested changes locally

Description

• new ms_timer parameter to enable millisecond precision timer
• new async_ms_route and async_ms_sleep functions with milliseconds as a param
• implementation:
  Each async_ms_sleep adds an entry to a linked list sorted by expiry time.
  List is checked every ms_timer ms for expired entries.
  All expired entries are pushed for execution on a pool of async workers.

This allows easy implementation of request traffic shaping with an external leaky bucket microservice
Assuring a maximum rate with no dropped requests by introducing delay.

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

  https://github.com/kamailio/kamailio/pull/2016

Commit Summary

• async: added support for millisecond resolution sleep

File Changes

• M src/modules/async/async_mod.c (134)
• M src/modules/async/async_sleep.c (210)
• M src/modules/async/async_sleep.h (8)
• M src/modules/async/doc/async_admin.xml (113)

Patch Links:

• https://github.com/kamailio/kamailio/pull/2016.patch
• https://github.com/kamailio/kamailio/pull/2016.diff

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