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comparison proxy_available.t @ 1779:4b80f1ab7fdc

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Tests: socket leaks with zero available bytes (ticket #2367).
author Sergey Kandaurov <pluknet@nginx.com>
date Sun, 17 Jul 2022 11:59:24 +0400
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1778:0979f22e3a5b 1779:4b80f1ab7fdc
1 #!/usr/bin/perl
2
3 # (C) Sergey Kandaurov
4 # (C) Nginx, Inc.
5
6 # Tests for http proxy module with available bytes counting.
7
8 ###############################################################################
9
10 use warnings;
11 use strict;
12
13 use Test::More;
14
15 use IO::Select;
16
17 BEGIN { use FindBin; chdir($FindBin::Bin); }
18
19 use lib 'lib';
20 use Test::Nginx qw/ :DEFAULT http_end /;
21
22 ###############################################################################
23
24 select STDERR; $| = 1;
25 select STDOUT; $| = 1;
26
27 my $t = Test::Nginx->new()->has(qw/http proxy/)->plan(2);
28
29 $t->write_file_expand('nginx.conf', <<'EOF');
30
31 %%TEST_GLOBALS%%
32
33 daemon off;
34
35 events {
36 }
37
38 http {
39 %%TEST_GLOBALS_HTTP%%
40
41 server {
42 listen 127.0.0.1:8080;
43 server_name localhost;
44
45 location /buffered {
46 proxy_pass http://127.0.0.1:8081;
47 proxy_buffer_size 512;
48 }
49
50 location /unbuffered {
51 proxy_pass http://127.0.0.1:8082;
52 proxy_buffer_size 512;
53 proxy_buffering off;
54 }
55 }
56 }
57
58 EOF
59
60 $t->run_daemon(\&http_daemon, port(8081));
61 $t->run_daemon(\&http_daemon, port(8082));
62 $t->run();
63
64 $t->waitforsocket('127.0.0.1:' . port(8081));
65 $t->waitforsocket('127.0.0.1:' . port(8082));
66
67 ###############################################################################
68
69 # ticket #2367: socket leaks with EPOLLRDHUP
70 # due to missing rev->ready reset on rev->available == 0
71 #
72 # to reproduce leaks, the first part of the response should fit proxy buffer
73
74 my $s = http_get('/buffered', start => 1);
75 IO::Select->new($s)->can_read(3);
76
77 $t->reload();
78
79 TODO: {
80 local $TODO = 'not yet' if $^O eq 'linux' and !$t->has_version('1.23.1');
81
82 like(http_end($s), qr/AND-THIS/, 'zero available - buffered');
83
84 }
85
86 $s = http_get('/unbuffered', start => 1);
87 IO::Select->new($s)->can_read(3);
88
89 $t->stop();
90
91 like(http_end($s), qr/AND-THIS/, 'zero available - unbuffered');
92
93 $t->todo_alerts() if $^O eq 'linux' and !$t->has_version('1.23.1');
94
95 ###############################################################################
96
97 sub http_daemon {
98 my ($port) = @_;
99
100 my $server = IO::Socket::INET->new(
101 Proto => 'tcp',
102 LocalHost => "127.0.0.1:$port",
103 Listen => 5,
104 Reuse => 1
105 )
106 or die "Can't create listening socket: $!\n";
107
108 local $SIG{PIPE} = 'IGNORE';
109
110 while (my $client = $server->accept()) {
111 $client->autoflush(1);
112
113 my $headers = '';
114 my $uri = '';
115
116 while (<$client>) {
117 $headers .= $_;
118 last if (/^\x0d?\x0a?$/);
119 }
120
121 next if $headers eq '';
122
123 my $r = <<EOF;
124 HTTP/1.1 200 OK
125 Connection: close
126
127 EOF
128
129 $r = $r . 'x' x (512 - length($r));
130 print $client $r;
131
132 select undef, undef, undef, 1.1;
133 print $client 'AND-THIS';
134 }
135 }
136
137 ###############################################################################