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annotate stream_upstream_random.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 a37d8526e691
children 875967f737d4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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fda743e92b31 Tests: upstream random 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 upstream random balancer module.
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7
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8 ###############################################################################
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9
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10 use warnings;
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11 use strict;
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12
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13 use Test::More;
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14
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15 BEGIN { use FindBin; chdir($FindBin::Bin); }
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16
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17 use lib 'lib';
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18 use Test::Nginx qw/ :DEFAULT http_end /;
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19
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20 ###############################################################################
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21
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22 select STDERR; $| = 1;
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23 select STDOUT; $| = 1;
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24
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25 my $t = Test::Nginx->new()
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26 ->has(qw/stream stream_upstream_zone stream_upstream_random/)
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27 ->write_file_expand('nginx.conf', <<'EOF');
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28
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29 %%TEST_GLOBALS%%
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30
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31 daemon off;
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32 worker_processes 2;
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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 stream {
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38 upstream u {
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39 zone z 1m;
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40 random;
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41 server 127.0.0.1:8081;
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42 server 127.0.0.1:8082;
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43 }
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44
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45 upstream lc {
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46 zone lc 1m;
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47 random two;
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48 server 127.0.0.1:8081;
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49 server 127.0.0.1:8082;
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50 }
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51
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52 upstream w {
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53 zone w 1m;
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54 random two least_conn;
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55 server 127.0.0.1:8081;
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56 server 127.0.0.1:8082 weight=2;
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57 }
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58
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59 upstream mc {
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60 zone mc 1m;
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61 random;
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62 server 127.0.0.1:8081 max_conns=2;
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63 server 127.0.0.1:8082 max_conns=1;
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64 }
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65
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66 upstream mc2 {
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67 zone mc 1m;
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68 random two;
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69 server 127.0.0.1:8081 max_conns=2;
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70 server 127.0.0.1:8082 max_conns=1;
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71 }
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72
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73 upstream one {
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74 random;
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75 server 127.0.0.1:8081;
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76 }
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77
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78 upstream two {
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79 random two;
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80 server 127.0.0.1:8081;
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81 }
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82
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83 upstream zone {
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84 zone z 1m;
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85 random;
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86 server 127.0.0.1:8081;
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87 }
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88
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89 upstream ztwo {
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90 zone z 1m;
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91 random two;
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92 server 127.0.0.1:8081;
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93 }
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94
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95 upstream fail {
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96 zone fail 1m;
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97 random;
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98 server 127.0.0.1:8096;
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99 server 127.0.0.1:8083 down;
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100 server 127.0.0.1:8082;
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101 }
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102
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103 upstream fail2 {
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104 zone fail2 1m;
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105 random two;
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106 server 127.0.0.1:8096;
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107 server 127.0.0.1:8083 down;
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108 server 127.0.0.1:8082;
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109 }
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110
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111 server {
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112 listen 127.0.0.1:8080;
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113 proxy_pass u;
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114 }
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115
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116 server {
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117 listen 127.0.0.1:8083;
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118 proxy_pass lc;
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119 }
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120
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121 server {
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122 listen 127.0.0.1:8084;
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123 proxy_pass w;
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124 }
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125
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126 server {
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127 listen 127.0.0.1:8085;
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128 proxy_pass mc;
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129 }
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130
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131 server {
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132 listen 127.0.0.1:8086;
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133 proxy_pass mc2;
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134 }
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135
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136 server {
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137 listen 127.0.0.1:8087;
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138 proxy_pass one;
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139 }
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140
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141 server {
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142 listen 127.0.0.1:8088;
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143 proxy_pass two;
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144 }
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145
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146 server {
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147 listen 127.0.0.1:8089;
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148 proxy_pass zone;
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149 }
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150
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151 server {
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152 listen 127.0.0.1:8090;
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153 proxy_pass ztwo;
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154 }
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155
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156 proxy_connect_timeout 1s;
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157
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158 server {
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159 listen 127.0.0.1:8091;
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160 proxy_pass fail;
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161 }
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162
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163 server {
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164 listen 127.0.0.1:8092;
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165 proxy_pass fail2;
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166 }
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167 }
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168
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169 EOF
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170
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171 $t->run_daemon(\&http_daemon, port(8081));
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172 $t->run_daemon(\&http_daemon, port(8082));
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173 $t->try_run('no upstream random')->plan(12);
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174
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175 $t->waitforsocket('127.0.0.1:' . port(8081));
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176 $t->waitforsocket('127.0.0.1:' . port(8082));
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177
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178 ###############################################################################
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179
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180 my @ports = my ($port1, $port2) = (port(8081), port(8082));
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181
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182 like(get(8080, '/'), qr/X-Port: ($port1|$port2)/, 'random');
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183 like(get(8083, '/'), qr/X-Port: ($port1|$port2)/, 'random two');
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184
1369
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185 my $s = get(8083, '/w', start => 1, sleep => 0.5);
1350
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186 my $r = get(8083, '/');
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187 my ($p) = http_end($s) =~ /X-Port: (\d+)/;
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188 like($r, qr/X-Port: (?!$p)/, 'random wait');
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189
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190 SKIP: {
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191 skip 'long test', 3 unless $ENV{TEST_NGINX_UNSAFE};
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192
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193 is(parallel(8084, '/w', 3), "$port1: 1, $port2: 2", 'random weight');
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194
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195 is(parallel(8085, '/w', 4), "$port1: 2, $port2: 1", 'max_conns');
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196 is(parallel(8086, '/w', 4), "$port1: 2, $port2: 1", 'max_conns two');
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197
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198 }
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199
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200 # single variants
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201
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202 like(get(8087, '/'), qr/X-Port: $port1/, 'single one');
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203 like(get(8088, '/'), qr/X-Port: $port1/, 'single two');
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204 like(get(8089, '/'), qr/X-Port: $port1/, 'zone one');
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205 like(get(8090, '/'), qr/X-Port: $port1/, 'zone two');
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206
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207 like(many(8091, '/', 10), qr/$port2: 10/, 'failures');
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208 like(many(8092, '/', 10), qr/$port2: 10/, 'failures two');
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209
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210 ###############################################################################
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211
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212 sub get {
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213 my ($port, $uri, %opts) = @_;
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214 my $s = IO::Socket::INET->new(
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215 Proto => 'tcp',
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216 PeerAddr => '127.0.0.1',
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217 PeerPort => port($port),
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218 )
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219 or die "Can't connect to nginx: $!\n";
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220
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221 http_get($uri, socket => $s, %opts);
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222 }
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223
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224 sub many {
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225 my ($port, $uri, $count, %opts) = @_;
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226 my %ports;
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227
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228 for (1 .. $count) {
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229 if (get($port, $uri) =~ /X-Port: (\d+)/) {
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230 $ports{$1} = 0 unless defined $ports{$1};
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231 $ports{$1}++;
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232 }
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233
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234 select undef, undef, undef, $opts{delay} if $opts{delay};
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235 }
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236
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237 my @keys = map { my $p = $_; grep { $p == $_ } keys %ports } @ports;
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238 return join ', ', map { $_ . ": " . $ports{$_} } @keys;
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239 }
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240
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diff changeset
241 sub parallel {
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242 my ($port, $uri, $n) = @_;
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243 my %ports;
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244
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245 my @s = map { get($port, $uri, start => 1, sleep => 0.1) } (1 .. $n);
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246
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diff changeset
247 for (@s) {
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diff changeset
248 if (http_end($_) =~ /X-Port: (\d+)/) {
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249 $ports{$1} = 0 unless defined $ports{$1};
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250 $ports{$1}++;
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diff changeset
251 }
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diff changeset
252 }
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253
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254 my @keys = map { my $p = $_; grep { $p == $_ } keys %ports } @ports;
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255 return join ', ', map { $_ . ": " . $ports{$_} } @keys;
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diff changeset
256 }
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257
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diff changeset
258 ###############################################################################
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259
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diff changeset
260 sub http_daemon {
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diff changeset
261 my ($port) = @_;
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262
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diff changeset
263 my $server = IO::Socket::INET->new(
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264 Proto => 'tcp',
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diff changeset
265 LocalHost => '127.0.0.1',
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266 LocalPort => $port,
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diff changeset
267 Listen => 5,
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diff changeset
268 Reuse => 1
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diff changeset
269 )
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diff changeset
270 or die "Can't create listening socket: $!\n";
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271
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272 local $SIG{PIPE} = 'IGNORE';
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273
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diff changeset
274 while (my $client = $server->accept()) {
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275 $client->autoflush(1);
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diff changeset
276
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diff changeset
277 my $headers = '';
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diff changeset
278 my $uri = '';
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diff changeset
279
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parents:
diff changeset
280 while (<$client>) {
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diff changeset
281 $headers .= $_;
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diff changeset
282 last if (/^\x0d?\x0a?$/);
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parents:
diff changeset
283 }
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284
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diff changeset
285 $uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;
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parents:
diff changeset
286
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diff changeset
287 if ($uri eq '/w') {
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diff changeset
288 Test::Nginx::log_core('||', "$port: sleep(2.5)");
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diff changeset
289 select undef, undef, undef, 2.5;
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diff changeset
290 }
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diff changeset
291
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diff changeset
292 if ($uri eq '/close' && $port == port(8081)) {
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diff changeset
293 next;
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diff changeset
294 }
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295
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diff changeset
296 Test::Nginx::log_core('||', "$port: response, 200");
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diff changeset
297 print $client <<EOF;
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parents:
diff changeset
298 HTTP/1.1 200 OK
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parents:
diff changeset
299 Connection: close
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diff changeset
300 X-Port: $port
fda743e92b31 Tests: upstream random tests.
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parents:
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301
fda743e92b31 Tests: upstream random tests.
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parents:
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302 OK
fda743e92b31 Tests: upstream random tests.
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parents:
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303 EOF
fda743e92b31 Tests: upstream random tests.
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304
fda743e92b31 Tests: upstream random tests.
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305 close $client;
fda743e92b31 Tests: upstream random tests.
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306 }
fda743e92b31 Tests: upstream random tests.
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parents:
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307 }
fda743e92b31 Tests: upstream random tests.
Sergey Kandaurov <pluknet@nginx.com>
parents:
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308
fda743e92b31 Tests: upstream random tests.
Sergey Kandaurov <pluknet@nginx.com>
parents:
diff changeset
309 ###############################################################################