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annotate proxy_next_upstream_tries.t @ 572:ca54b445d982

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Tests: masked nginx bug in proxy next upstream. When iterating through several next upstreams per a worker cycle, a previously reported event about upstream connection error may be improperly applied to the next upstream, thus leading to the invalid connection error. E.g., in kqueue, where the problem is visible, this is caused by "ev->instance" that does not tolerate more than one next upstream at once, and kevents placed on the kqueue separately for read and write events. The change is to limit test case to the only one next upstream.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 14 May 2015 11:54:24 +0300
parents 907e89fba9c3
children ef1c363dd648
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cb0662e12d6e Tests: proxy_next_upstream_{tries,timeout} tests.
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1 #!/usr/bin/perl
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2
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3 # (C) Sergey Kandaurov
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4 # (C) Nginx, Inc.
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5
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6 # Tests for http proxy module, proxy_next_upstream_tries
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7 # and proxy_next_upstream_timeout directives.
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8
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9 ###############################################################################
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10
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11 use warnings;
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12 use strict;
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13
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14 use Test::More;
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15
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16 BEGIN { use FindBin; chdir($FindBin::Bin); }
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17
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18 use lib 'lib';
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19 use Test::Nginx;
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20
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21 ###############################################################################
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22
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23 select STDERR; $| = 1;
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24 select STDOUT; $| = 1;
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25
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26 my $t = Test::Nginx->new()->has(qw/http proxy rewrite/)->plan(8);
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27
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28 $t->write_file_expand('nginx.conf', <<'EOF');
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29
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30 %%TEST_GLOBALS%%
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31
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32 daemon off;
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33
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34 events {
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35 }
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36
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37 http {
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38 %%TEST_GLOBALS_HTTP%%
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39
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40 upstream u {
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41 server 127.0.0.1:8081;
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42 server 127.0.0.1:8081;
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43 server 127.0.0.1:8081;
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44 }
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45
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46 upstream u2 {
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47 server 127.0.0.1:8081;
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48 server 127.0.0.1:8081 backup;
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49 server 127.0.0.1:8081 backup;
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50 }
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51
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52 server {
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53 listen 127.0.0.1:8080;
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54 server_name localhost;
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55
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56 proxy_next_upstream http_404;
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57 proxy_intercept_errors on;
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58 error_page 404 /404;
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59
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60 location /tries {
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61 proxy_pass http://u;
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62 proxy_next_upstream_tries 2;
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63 }
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64
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65 location /tries/backup {
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66 proxy_pass http://u2;
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67 proxy_next_upstream_tries 2;
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68 }
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69
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70 location /tries/resolver {
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71 resolver 127.0.0.1:8083;
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72 resolver_timeout 1s;
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73
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74 proxy_pass http://$host:8081;
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75 proxy_next_upstream_tries 2;
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76 }
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77
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78 location /tries/zero {
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79 proxy_pass http://u;
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80 proxy_next_upstream_tries 0;
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81 }
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82
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83 location /timeout {
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84 proxy_pass http://u/w;
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85 proxy_next_upstream_timeout 1900ms;
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86 }
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87
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88 location /timeout/backup {
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89 proxy_pass http://u2/w;
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90 proxy_next_upstream_timeout 1900ms;
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91 }
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92
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93 location /timeout/resolver {
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94 resolver 127.0.0.1:8083;
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95 resolver_timeout 1s;
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96
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97 proxy_pass http://$host:8081/w;
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98 proxy_next_upstream_timeout 1900ms;
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99 }
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100
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101 location /timeout/zero {
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102 proxy_pass http://u/w;
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103 proxy_next_upstream_timeout 0;
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104 }
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105
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106 location /404 {
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107 return 200 x${upstream_status}x;
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108 }
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109 }
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110 }
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111
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112 EOF
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113
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114 $t->run_daemon(\&http_daemon, 8081);
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115 $t->run_daemon(\&dns_daemon, 8083, $t);
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116 $t->run();
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117
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118 $t->waitforsocket('127.0.0.1:8081');
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119 $t->waitforfile($t->testdir . '/8083');
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120
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121 ###############################################################################
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122
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123 like(http_get('/tries'), qr/x404, 404x/, 'tries');
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124 like(http_get('/tries/backup'), qr/x404, 404x/, 'tries backup');
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125 like(http_get('/tries/resolver'), qr/x404, 404x/, 'tries resolved');
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126 like(http_get('/tries/zero'), qr/x404, 404, 404x/, 'tries zero');
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127
492
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128 # two tries fit into 1.9s
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129
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130 like(http_get('/timeout'), qr/x404, 404x/, 'timeout');
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131 like(http_get('/timeout/backup'), qr/x404, 404x/, 'timeout backup');
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132 like(http_get('/timeout/resolver'), qr/x404, 404x/, 'timeout resolved');
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133 like(http_get('/timeout/zero'), qr/x404, 404, 404x/, 'timeout zero');
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134
462
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135 ###############################################################################
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136
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137 sub http_daemon {
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138 my ($port) = @_;
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139
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140 my $server = IO::Socket::INET->new(
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141 Proto => 'tcp',
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142 LocalHost => '127.0.0.1',
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143 LocalPort => $port,
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144 Listen => 5,
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145 Reuse => 1
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146 )
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147 or die "Can't create listening socket: $!\n";
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148
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149 local $SIG{PIPE} = 'IGNORE';
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150
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151 while (my $client = $server->accept()) {
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152 $client->autoflush(1);
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153
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154 my $headers = '';
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155 my $uri = '';
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156
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157 while (<$client>) {
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158 $headers .= $_;
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159 last if (/^\x0d?\x0a?$/);
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160 }
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161
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162 next if $headers eq '';
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163
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164 $uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;
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165
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166 if ($uri eq '/w') {
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167 Test::Nginx::log_core('||', "$port: sleep(1)");
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168 select undef, undef, undef, 1;
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169 }
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170
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171 Test::Nginx::log_core('||', "$port: response, 404");
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172 print $client <<EOF;
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173 HTTP/1.1 404 Not Found
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174 Connection: close
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175
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176 EOF
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177
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178 } continue {
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179 close $client;
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180 }
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181 }
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182
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183 sub reply_handler {
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184 my ($recv_data) = @_;
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185
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186 my (@name, @rdata);
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187
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188 use constant NOERROR => 0;
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189 use constant A => 1;
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190 use constant IN => 1;
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191
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192 # default values
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193
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194 my ($hdr, $rcode, $ttl) = (0x8180, NOERROR, 3600);
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195
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196 # decode name
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197
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198 my ($len, $offset) = (undef, 12);
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199 while (1) {
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200 $len = unpack("\@$offset C", $recv_data);
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201 last if $len == 0;
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202 $offset++;
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203 push @name, unpack("\@$offset A$len", $recv_data);
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204 $offset += $len;
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205 }
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206
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207 $offset -= 1;
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208 my ($id, $type, $class) = unpack("n x$offset n2", $recv_data);
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209
485
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210 @rdata = map { rd_addr($ttl, '127.0.0.1') } (1 .. 3) if $type == A;
479
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211
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212 $len = @name;
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213 pack("n6 (w/a*)$len x n2", $id, $hdr | $rcode, 1, scalar @rdata,
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214 0, 0, @name, $type, $class) . join('', @rdata);
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215 }
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216
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217 sub rd_addr {
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218 my ($ttl, $addr) = @_;
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219
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220 my $code = 'split(/\./, $addr)';
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221
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222 return pack 'n3N', 0xc00c, A, IN, $ttl if $addr eq '';
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223
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224 pack 'n3N nC4', 0xc00c, A, IN, $ttl, eval "scalar $code", eval($code);
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225 }
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226
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227 sub dns_daemon {
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228 my ($port, $t) = @_;
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229
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230 my ($data, $recv_data);
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231 my $socket = IO::Socket::INET->new(
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232 LocalAddr => '127.0.0.1',
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233 LocalPort => $port,
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234 Proto => 'udp',
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235 )
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236 or die "Can't create listening socket: $!\n";
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237
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238 # signal we are ready
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239
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240 open my $fh, '>', $t->testdir() . '/' . $port;
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241 close $fh;
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242
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243 while (1) {
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244 $socket->recv($recv_data, 65536);
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245 $data = reply_handler($recv_data);
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246 $socket->send($data);
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247 }
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248 }
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249
462
cb0662e12d6e Tests: proxy_next_upstream_{tries,timeout} tests.
Sergey Kandaurov <pluknet@nginx.com>
parents:
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