commit 35062c6dcf50f7372171f0837d8e7f3b3912ffd2
author Maxim Dounin <mdounin@mdounin.ru> Mon Mar 28 19:50:19 2016 +0300
committer Maxim Dounin <mdounin@mdounin.ru> Mon Mar 28 19:50:19 2016 +0300
tree 00e51ffc2042e5e1347094031f09d85534955ce9
parent a7ed0254cb2bbb9e05a12cb9db4c0d4e575fb66f

Upstream: proxy_next_upstream non_idempotent.

By default, requests with non-idempotent methods (POST, LOCK, PATCH)
are no longer retried in case of errors if a request was already sent
to a backend.  Previous behaviour can be restored by using
"proxy_next_upstream ... non_idempotent".

src/http/modules/ngx_http_proxy_module.c

diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index a869e74..5005b6b 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -213,6 +213,7 @@
     { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
     { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
     { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
+    { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT },
     { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
     { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 },
     { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },