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comparison proxy_cache_error.t @ 1266:b17f27fa9081

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Tests: tests for "header already sent" alerts on backend errors.
author Maxim Dounin <mdounin@mdounin.ru>
date Fri, 05 Jan 2018 08:27:26 +0300
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children f94e79aad895
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1265:200d9d091da2 1266:b17f27fa9081
1 #!/usr/bin/perl
2
3 # (C) Maxim Dounin
4
5 # Tests for http proxy cache, "header already sent" alerts on backend errors,
6 # http://mailman.nginx.org/pipermail/nginx-devel/2018-January/010737.html.
7
8 ###############################################################################
9
10 use warnings;
11 use strict;
12
13 use Test::More;
14
15 BEGIN { use FindBin; chdir($FindBin::Bin); }
16
17 use lib 'lib';
18 use Test::Nginx;
19
20 ###############################################################################
21
22 select STDERR; $| = 1;
23 select STDOUT; $| = 1;
24
25 my $t = Test::Nginx->new()->has(qw/http proxy cache/)->plan(1)
26 ->write_file_expand('nginx.conf', <<'EOF');
27
28 %%TEST_GLOBALS%%
29
30 daemon off;
31
32 events {
33 }
34
35 http {
36 %%TEST_GLOBALS_HTTP%%
37
38 proxy_cache_path %%TESTDIR%%/cache levels=1:2
39 keys_zone=NAME:1m;
40
41 server {
42 listen 127.0.0.1:8080;
43 server_name localhost;
44
45 location / {
46 proxy_pass http://127.0.0.1:8081;
47 proxy_cache NAME;
48
49 proxy_read_timeout 100ms;
50 }
51 }
52
53 server {
54 listen 127.0.0.1:8081;
55 server_name localhost;
56
57 location / {
58 limit_rate 512;
59 expires 1m;
60 }
61 }
62 }
63
64 EOF
65
66 $t->write_file('big.html', 'x' x 1024);
67
68 $t->run();
69
70 ###############################################################################
71
72 # make a HEAD request; as cache is enabled, nginx convert HEAD to GET
73 # and will set u->pipe->downstream_error to suppress sending the response
74 # body to the client
75
76 like(http_head('/big.html'), qr/200 OK/, 'head request');
77
78 # once proxy_read_timeout expires, nginx will call
79 # ngx_http_finalize_upstream_request() with u->pipe->downstream_error set
80 # and rc = NGX_HTTP_GATEWAY_TIMEOUT; after revision ad3f342f14ba046c this
81 # will result in ngx_http_finalize_request(NGX_HTTP_GATEWAY_TIMEOUT),
82 # leading to an attempt to return additional error response and
83 # the "header already sent" alert
84
85 $t->todo_alerts();
86
87 ###############################################################################