[PR] fix: rebuild stream router when services change [apisix]

["shreemaan-abhishek (via GitHub)" <gi...@apache.org>]

shreemaan-abhishek opened a new pull request, #13318:
URL: https://github.com/apache/apisix/pull/13318

   ### Description
   
   The stream router in `apisix/stream/router/ip_port.lua` only tracked `stream_routes.conf_version` to decide when to rebuild the internal router. As a result, updates to a service referenced by a stream route did not trigger a rebuild, so changes such as a service arriving after the route, status updates, or deletion were not consistently reflected. Additionally, when a rebuild produced zero TLS routes, the previously built `tls_router` was left in place and could keep dispatching against stale routes. This change tracks the services `conf_version` alongside the stream routes version and rebuilds the router when either changes, and resets `tls_router` to nil when the rebuild yields no TLS routes.
   
   #### Which issue(s) this PR fixes:
   Fixes #
   
   ### Checklist
   
   - [x] I have explained the need for this PR and the problem it solves
   - [x] I have explained the changes or the new features added to this PR
   - [ ] I have added tests corresponding to this change
   - [ ] I have updated the documentation to reflect this change
   - [x] I have verified that this change is backward compatible (If not, please discuss on the [APISIX mailing list](https://github.com/apache/apisix/tree/master#community) first)
   


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Re: [PR] fix: rebuild stream router when services change [apisix]

["shreemaan-abhishek (via GitHub)" <gi...@apache.org>]

shreemaan-abhishek merged PR #13318:
URL: https://github.com/apache/apisix/pull/13318


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