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diff src/http/ngx_http_upstream.c @ 6966:fa56ab75cffc

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Upstream: allow recovery from "429 Too Many Requests" response. This change adds "http_429" parameter to "proxy_next_upstream" for retrying rate-limited requests, and to "proxy_cache_use_stale" for serving stale cached responses after being rate-limited. Signed-off-by: Piotr Sikora <piotrsikora@google.com>
author Piotr Sikora <piotrsikora@google.com>
date Fri, 24 Mar 2017 02:48:03 -0700
parents 903fb1ddc07f
children 0cdee26605f3
line wrap: on
line diff
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -436,6 +436,7 @@ static ngx_http_upstream_next_t  ngx_htt
     { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
     { 403, NGX_HTTP_UPSTREAM_FT_HTTP_403 },
     { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
+    { 429, NGX_HTTP_UPSTREAM_FT_HTTP_429 },
     { 0, 0 }
 };
 
@@ -4126,6 +4127,10 @@ ngx_http_upstream_next(ngx_http_request_
         status = NGX_HTTP_NOT_FOUND;
         break;
 
+    case NGX_HTTP_UPSTREAM_FT_HTTP_429:
+        status = NGX_HTTP_TOO_MANY_REQUESTS;
+        break;
+
     /*
      * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
      * never reach here