fix(runloop): use upstream status code in passive health check (#10325) #10516
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We expect the upstream passive unhealthy healthcheck on HTTP status code should only mark the targets as "down" (not reachable or proxiable) using the returned HTTP status code from the target, and it should not be affected by the final HTTP status code set by Kong plugin, which is returned to the client. So we change the passive health check implementation to use nginx var `upstream_code`, this will not be changed by any plugin. FTI-4841 Fix #10281 (cherry picked from commit dbe8d94)
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We expect the upstream passive unhealthy healthcheck on HTTP status code should only mark the targets as "down" (not reachable or proxiable) using the returned HTTP status code from the target, and it should not be affected by the final HTTP status code set by Kong plugin, which is returned to the client.
So we change the passive health check implementation to use nginx var
upstream_code, this will not be changed by any plugin.FTI-4841
Fix #10281
(cherry picked from commit dbe8d94)
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