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Revert "core & res_pjsip: Improve topology change handling."

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This reverts commit 315eb551db.

Over the past year, we've had several reports of "topology storms"
occurring where 2 external facing channels connected by one or more
local channels and bridges will get themselves in a state where
they continually send each other topology change requests.  This
usually manifests itself in no-audio calls and a flood of
"Exceptionally long queue length" messages.  It appears that this
commit is the cause so we're reverting it for now until we can
determine a more appropriate solution.

Resolves: #530
This commit is contained in:
George Joseph
2024-01-12 05:47:58 -07:00
parent f22f49e77a
commit 4715c1b11c
2 changed files with 19 additions and 7 deletions
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9
main/channel.c
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@@ -11164,6 +11164,15 @@ int ast_channel_request_stream_topology_change(struct ast_channel *chan,
return -1;
}
if (ast_stream_topology_equal(ast_channel_get_stream_topology(chan), topology)) {
ast_debug(2, "%s: Topologies already match. Current: %s Requested: %s\n",
ast_channel_name(chan),
ast_str_tmp(256, ast_stream_topology_to_str(ast_channel_get_stream_topology(chan), &STR_TMP)),
ast_str_tmp(256, ast_stream_topology_to_str(topology, &STR_TMP)));
ast_channel_unlock(chan);
return 0;
}
ast_channel_internal_set_stream_topology_change_source(chan, change_source);
res = ast_channel_tech(chan)->indicate(chan, AST_CONTROL_STREAM_TOPOLOGY_REQUEST_CHANGE, topology, sizeof(topology));