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annotate proxy_next_upstream_tries.t @ 1427:eb1d883305ea

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Tests: avoid edge cases in upstream random two test. Unavailable servers contribute to the number of attempts, if selected, before the balancer would fall back to the default round-robin method. This means that it's quite possible to get server with more connections. To facilitate with selecting two alive servers, down server was removed from the upstream configuration at the cost of slightly worse coverage.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 10 Jan 2019 17:42:34 +0300
parents e4974af3fb12
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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:%%PORT_8982_UDP%%;
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72
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73 proxy_pass http://$host:%%PORT_8081%%;
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74 proxy_next_upstream_tries 2;
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75 }
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76
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77 location /tries/zero {
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78 proxy_pass http://u;
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79 proxy_next_upstream_tries 0;
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80 }
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81
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82 location /timeout {
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83 proxy_pass http://u/w2;
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84 proxy_next_upstream_timeout 3800ms;
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85 }
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86
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87 location /timeout/backup {
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88 proxy_pass http://u2/w2;
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89 proxy_next_upstream_timeout 3800ms;
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90 }
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91
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92 location /timeout/resolver {
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93 resolver 127.0.0.1:%%PORT_8982_UDP%%;
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94
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95 proxy_pass http://$host:%%PORT_8081%%/w2;
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96 proxy_next_upstream_timeout 3800ms;
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97 }
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98
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99 location /timeout/zero {
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100 proxy_pass http://u/w;
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101 proxy_next_upstream_timeout 0;
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102 }
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103
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104 location /404 {
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105 return 200 x${upstream_status}x;
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106 }
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107 }
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108 }
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109
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110 EOF
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111
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112 $t->run_daemon(\&http_daemon, port(8081));
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113 $t->run_daemon(\&dns_daemon, port(8982), $t);
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114 $t->run();
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115
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116 $t->waitforsocket('127.0.0.1:' . port(8081));
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117 $t->waitforfile($t->testdir . '/' . port(8982));
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118
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119 ###############################################################################
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120
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121 like(http_get('/tries'), qr/x404, 404x/, 'tries');
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122 like(http_get('/tries/backup'), qr/x404, 404x/, 'tries backup');
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123 like(http_get('/tries/resolver'), qr/x404, 404x/, 'tries resolved');
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124 like(http_get('/tries/zero'), qr/x404, 404, 404x/, 'tries zero');
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125
492
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126 # two tries fit into 1.9s
462
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127
608
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128 SKIP: {
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129 skip 'long tests', 4 unless $ENV{TEST_NGINX_UNSAFE};
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130
462
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131 like(http_get('/timeout'), qr/x404, 404x/, 'timeout');
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132 like(http_get('/timeout/backup'), qr/x404, 404x/, 'timeout backup');
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133 like(http_get('/timeout/resolver'), qr/x404, 404x/, 'timeout resolved');
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134 like(http_get('/timeout/zero'), qr/x404, 404, 404x/, 'timeout zero');
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135
608
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136 }
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137
462
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138 ###############################################################################
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139
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140 sub http_daemon {
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141 my ($port) = @_;
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142
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143 my $server = IO::Socket::INET->new(
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144 Proto => 'tcp',
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145 LocalHost => '127.0.0.1',
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146 LocalPort => $port,
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147 Listen => 5,
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148 Reuse => 1
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149 )
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150 or die "Can't create listening socket: $!\n";
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151
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152 local $SIG{PIPE} = 'IGNORE';
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153
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154 while (my $client = $server->accept()) {
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155 $client->autoflush(1);
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156
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157 my $headers = '';
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158 my $uri = '';
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159
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160 while (<$client>) {
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161 $headers .= $_;
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162 last if (/^\x0d?\x0a?$/);
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163 }
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164
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165 next if $headers eq '';
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166
494
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167 $uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;
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168
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169 if ($uri eq '/w') {
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170 Test::Nginx::log_core('||', "$port: sleep(1)");
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171 select undef, undef, undef, 1;
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172 }
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173
608
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174 if ($uri eq '/w2') {
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175 Test::Nginx::log_core('||', "$port: sleep(2)");
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176 select undef, undef, undef, 2;
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177 }
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178
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179 Test::Nginx::log_core('||', "$port: response, 404");
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180 print $client <<EOF;
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181 HTTP/1.1 404 Not Found
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182 Connection: close
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183
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184 EOF
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185
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186 } continue {
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187 close $client;
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188 }
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189 }
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190
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191 sub reply_handler {
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192 my ($recv_data) = @_;
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193
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194 my (@name, @rdata);
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195
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196 use constant NOERROR => 0;
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197 use constant A => 1;
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198 use constant IN => 1;
479
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199
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200 # default values
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201
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202 my ($hdr, $rcode, $ttl) = (0x8180, NOERROR, 3600);
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203
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204 # decode name
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205
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206 my ($len, $offset) = (undef, 12);
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207 while (1) {
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208 $len = unpack("\@$offset C", $recv_data);
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209 last if $len == 0;
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210 $offset++;
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211 push @name, unpack("\@$offset A$len", $recv_data);
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212 $offset += $len;
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213 }
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214
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215 $offset -= 1;
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216 my ($id, $type, $class) = unpack("n x$offset n2", $recv_data);
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217
485
cbfe90b632e8 Tests: removed stray semicolon, no functional changes.
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218 @rdata = map { rd_addr($ttl, '127.0.0.1') } (1 .. 3) if $type == A;
479
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219
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220 $len = @name;
775
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221 pack("n6 (C/a*)$len x n2", $id, $hdr | $rcode, 1, scalar @rdata,
479
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222 0, 0, @name, $type, $class) . join('', @rdata);
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223 }
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224
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225 sub rd_addr {
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226 my ($ttl, $addr) = @_;
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227
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228 my $code = 'split(/\./, $addr)';
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229
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230 return pack 'n3N', 0xc00c, A, IN, $ttl if $addr eq '';
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231
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232 pack 'n3N nC4', 0xc00c, A, IN, $ttl, eval "scalar $code", eval($code);
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233 }
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234
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235 sub dns_daemon {
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236 my ($port, $t) = @_;
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237
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238 my ($data, $recv_data);
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239 my $socket = IO::Socket::INET->new(
937
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240 LocalAddr => '127.0.0.1',
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241 LocalPort => $port,
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242 Proto => 'udp',
479
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243 )
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244 or die "Can't create listening socket: $!\n";
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245
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246 # signal we are ready
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247
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248 open my $fh, '>', $t->testdir() . '/' . $port;
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249 close $fh;
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250
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251 while (1) {
b8f10ffa02cd Tests: proxy_next_upstream_tries tests with resolved upstream.
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parents: 462
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252 $socket->recv($recv_data, 65536);
b8f10ffa02cd Tests: proxy_next_upstream_tries tests with resolved upstream.
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parents: 462
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253 $data = reply_handler($recv_data);
b8f10ffa02cd Tests: proxy_next_upstream_tries tests with resolved upstream.
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parents: 462
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254 $socket->send($data);
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parents: 462
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255 }
b8f10ffa02cd Tests: proxy_next_upstream_tries tests with resolved upstream.
Sergey Kandaurov <pluknet@nginx.com>
parents: 462
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256 }
b8f10ffa02cd Tests: proxy_next_upstream_tries tests with resolved upstream.
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parents: 462
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257
462
cb0662e12d6e Tests: proxy_next_upstream_{tries,timeout} tests.
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parents:
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258 ###############################################################################