… or reloading the list

<!-- Kamailio Pull Request Template -->

<!-- IMPORTANT: - for detailed contributing guidelines, read: https://github.com/kamailio/kamailio/blob/master/.github/CONTRIBUTING.md - pull requests must be done to master branch, unless they are backports of fixes from master branch to a stable branch - backports to stable branches must be done with 'git cherry-pick -x ...' - code is contributed under BSD for core and main components (tm, sl, auth, tls) - code is contributed GPLv2 or a compatible license for the other components - GPL code is contributed with OpenSSL licensing exception -->

#### Pre-Submission Checklist <!-- Go over all points below, and after creating the PR, tick all the checkboxes that apply --> <!-- All points should be verified, otherwise, read the CONTRIBUTING guidelines from above--> <!-- If you're unsure about any of these, don't hesitate to ask on sr-dev mailing list --> - [x] Commit message has the format required by CONTRIBUTING guide - [x] Commits are split per component (core, individual modules, libs, utils, ...) - [x] Each component has a single commit (if not, squash them into one commit) - [x] No commits to README files for modules (changes must be done to docbook files in `doc/` subfolder, the README file is autogenerated)

#### Type Of Change - [x] Small bug fix (non-breaking change which fixes an issue) - [ ] New feature (non-breaking change which adds new functionality) - [ ] Breaking change (fix or feature that would change existing functionality)

#### Checklist: <!-- Go over all points below, and after creating the PR, tick the checkboxes that apply --> - [ ] PR should be backported to stable branches - [x] Tested changes locally - [ ] Related to issue #XXXX (replace XXXX with an open issue number)

#### Description

When a destination is added/removed or the whole list is reloaded, the calls that are being routed to another destination will fail. This because ds_load_replace is returning an error not finding in the table the entry for the call being rerouted. Another side effect of this is that when adding/removing destinations the actual load of the endpoints will be wrong since the current calls will never be deleted. I've removed the calls to ds_clean_slots and modified ds_load_replace to not exit when the old destination is not found (the endpoint could have been removed after the failover list had been created) and to return a new error code (-2) when the new destination is not found (for the same reason). Finally I've modified ds_update_dst to skip the current selected destination and select the next if ds_load_replace returns -2.

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

https://github.com/kamailio/kamailio/pull/2342

-- Commit Summary --

* dispatcher: don't reset load table when adding/removing a destination or reloading the list

-- File Changes --

M src/modules/dispatcher/dispatch.c (37)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/2342.patch https://github.com/kamailio/kamailio/pull/2342.diff