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Upstream: proxy_next_upstream non_idempotent.

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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".
This commit is contained in:
Maxim Dounin 2016-03-28 19:50:19 +03:00
parent 5a76856dc2
commit 4618c03f4c
6 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/http/modules/ngx_http_fastcgi_module.c
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@ -206,6 +206,7 @@ static ngx_conf_bitmask_t ngx_http_fastcgi_next_upstream_masks[] = {
{ 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_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
{ ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 },

1
src/http/modules/ngx_http_proxy_module.c
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@ -213,6 +213,7 @@ static ngx_conf_bitmask_t ngx_http_proxy_next_upstream_masks[] = {
{ 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 },

1
src/http/modules/ngx_http_scgi_module.c
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@ -77,6 +77,7 @@ static ngx_conf_bitmask_t ngx_http_scgi_next_upstream_masks[] = {
{ 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_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
{ ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 },

1
src/http/modules/ngx_http_uwsgi_module.c
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@ -109,6 +109,7 @@ static ngx_conf_bitmask_t ngx_http_uwsgi_next_upstream_masks[] = {
{ 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_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
{ ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 },

8
src/http/ngx_http_upstream.c
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@ -3989,8 +3989,14 @@ ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
timeout = u->conf->next_upstream_timeout;
if (u->request_sent
&& (r->method & (NGX_HTTP_POST|NGX_HTTP_LOCK|NGX_HTTP_PATCH)))
{
ft_type |= NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT;
}
if (u->peer.tries == 0
|| !(u->conf->next_upstream & ft_type)
|| ((u->conf->next_upstream & ft_type) != ft_type)
|| (u->request_sent && r->request_body_no_buffering)
|| (timeout && ngx_current_msec - u->peer.start_time >= timeout))
{

1
src/http/ngx_http_upstream.h
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@ -29,6 +29,7 @@
#define NGX_HTTP_UPSTREAM_FT_UPDATING 0x00000400
#define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00000800
#define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00001000
#define NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT 0x00002000
#define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000
#define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000