Hi Ben,
Use paging (index and count) when fetching the dialgs:
https://opensips.org/html/docs/modules/3.6.x/dialog.html#mi_dlg_list
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 09.07.2025 13:11, Ben Laing via Users wrote:
Hi folks,
I’m using OpenSIPs as a load balancer in an active/active setup. I’m
trying to set up call re-homing when a node in the cluster goes down,
largely following
https://blog.opensips.org/2019/10/03/re-homing-your-calls-with-opensips-3-0/
. I’ve got separate shtags lb1 and lb2 for each node.
When the cluster down is detected, I am running a python script that
sets the remaining node as active then aims to rehome the calls in
progress. Currently, that works by getting dlg_list_ctx, then running
dlg_send_sequential for each dialog with a shtag matching the down
node (dialog[‘context’][‘values’][‘dlgX_shtag’].
That’s fine for a few calls, but fails when we get to a few hundred
because the dlg_list_ctx throws an error:
Jul9 09:47:00 ip-10-4-40-11 /usr/sbin/opensips[83438]:
ERROR:core:print_mi_response: Failed to print JSON
Jul9 09:47:00 ip-10-4-40-11 /usr/sbin/opensips[83438]:
ERROR:mi_http:mi_json_answer_to_connection: failed to print json response
Any ideas recommendations on how to tackle this?
I could use dlg_list_ctx specifying an index/counter to complete in
batches, but I’m not quite sure how the indexing works so there’s a
worry we’d miss calls. E.g. we do calls 0-40 then 41-80 but if call 0
ends while processing 0-40, does that mean call 41 becomes call 40 so
it’s missed from the 41-80 batch.
Probably the best solution I have at the moment is to query the DB
directly to get the definitively list of call ids, then run
dlg_list_ctx specifying and iID then dlg_send_sequential if
appropriate. Or just don’t bother checking and run dlg_send_sequential
on them all.
Any thoughts / suggestions?
Best,
‑‑‑‑‑
*Ben Laing***
He/Him
Senior Software Developer
Email: _ben.la...@dals.co.uk_
Website: www.dals.co.uk <http://www.dals.co.uk/>
*Dals, Statham House, Talbot Rd, Stretford, Manchester, M32 0FP***
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