Mercurial > hg > nginx-quic
annotate src/core/ngx_sha1.h @ 4010:74a93d3fdd85
Fixing cpu hog with all upstream servers marked "down".
The following configuration causes nginx to hog cpu due to infinite loop
in ngx_http_upstream_get_peer():
upstream backend {
server 127.0.0.1:8080 down;
server 127.0.0.1:8080 down;
}
server {
...
location / {
proxy_pass http://backend;
}
}
Make sure we don't loop infinitely in ngx_http_upstream_get_peer() but stop
after resetting peer weights once.
Return 0 if we are stuck. This is guaranteed to work as peer 0 always exists,
and eventually ngx_http_upstream_get_round_robin_peer() will do the right
thing falling back to backup servers or returning NGX_BUSY.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 18 Aug 2011 16:52:38 +0000 |
parents | 27d4ed42e49d |
children | d620f497c50f |
rev | line source |
---|---|
1573 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #ifndef _NGX_SHA1_H_INCLUDED_ | |
8 #define _NGX_SHA1_H_INCLUDED_ | |
9 | |
10 | |
11 #include <ngx_config.h> | |
12 #include <ngx_core.h> | |
13 | |
14 | |
15 #if (NGX_HAVE_OPENSSL_SHA1_H) | |
16 #include <openssl/sha.h> | |
17 #else | |
18 #include <sha.h> | |
19 #endif | |
20 | |
21 | |
22 typedef SHA_CTX ngx_sha1_t; | |
23 | |
24 | |
1598 | 25 #define ngx_sha1_init SHA1_Init |
26 #define ngx_sha1_update SHA1_Update | |
27 #define ngx_sha1_final SHA1_Final | |
1573 | 28 |
29 | |
30 #endif /* _NGX_SHA1_H_INCLUDED_ */ |