Mercurial > hg > nginx-tests

annotate upstream_hash.t @ 973:7d7aef8b9f3a

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Tests: revert 313e3f1905d4 and set reuse properly. It is too late to use setsockopt(SO_REUSEADDR) after a socket is created as bind() happens during socket construction, and fails if there is a conflicting TIME-WAIT socket and SO_REUSEADDR is not set.
author Maxim Dounin <mdounin@mdounin.ru>
date Sun, 10 Jul 2016 18:57:12 +0300
parents e9064d691790
children 882267679006
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 upstream hash 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;
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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()->has(qw/http proxy rewrite upstream_hash/)->plan(11);
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26
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27 $t->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
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33 events {
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34 }
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35
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36 http {
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37 %%TEST_GLOBALS_HTTP%%
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38
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39 upstream u {
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40 hash $arg_a;
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41 server 127.0.0.1:%%PORT_1%%;
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42 server 127.0.0.1:%%PORT_2%%;
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43 server 127.0.0.1:%%PORT_3%%;
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44 }
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45
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46 upstream u2 {
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47 hash $arg_a;
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48 server 127.0.0.1:%%PORT_1%%;
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49 server 127.0.0.1:%%PORT_3%%;
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50 }
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51
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52 upstream cw {
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53 hash $arg_a consistent;
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54 server 127.0.0.1:%%PORT_1%%;
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55 server 127.0.0.1:%%PORT_2%%;
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56 server 127.0.0.1:%%PORT_3%% weight=10;
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57 }
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58
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59 upstream cw2 {
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60 hash $arg_a consistent;
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61 server 127.0.0.1:%%PORT_1%%;
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62 server 127.0.0.1:%%PORT_3%% weight=10;
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63 }
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64
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65 upstream c {
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66 hash $arg_a consistent;
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67 server 127.0.0.1:%%PORT_1%%;
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68 server 127.0.0.1:%%PORT_2%%;
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69 server 127.0.0.1:%%PORT_3%%;
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70 }
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71
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72 upstream c2 {
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73 hash $arg_a consistent;
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74 server 127.0.0.1:%%PORT_1%%;
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75 server 127.0.0.1:%%PORT_3%%;
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76 }
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77
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78 upstream bad {
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79 hash $arg_a;
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80 server 127.0.0.1:%%PORT_1%%;
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81 server 127.0.0.1:%%PORT_4%%;
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82 }
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83
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84 upstream cbad {
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85 hash $arg_a consistent;
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86 server 127.0.0.1:%%PORT_1%%;
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87 server 127.0.0.1:%%PORT_4%%;
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88 }
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89
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90 server {
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91 listen 127.0.0.1:%%PORT_0%%;
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92 server_name localhost;
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93
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94 location / {
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95 proxy_pass http://u;
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96 }
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97 location /2 {
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98 proxy_pass http://u2;
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99 }
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100 location /cw {
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101 proxy_pass http://cw;
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102 }
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103 location /cw2 {
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104 proxy_pass http://cw2;
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105 }
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106 location /c {
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107 proxy_pass http://c;
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108 }
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109 location /c2 {
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110 proxy_pass http://c2;
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111 }
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112 location /bad {
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113 proxy_pass http://bad;
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114 }
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115 location /cbad {
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116 proxy_pass http://cbad;
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117 }
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118 location /pnu {
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119 proxy_pass http://u/;
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120 proxy_next_upstream http_502;
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121 }
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122 }
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123
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124 server {
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125 listen 127.0.0.1:%%PORT_1%%;
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126 listen 127.0.0.1:%%PORT_2%%;
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127 listen 127.0.0.1:%%PORT_3%%;
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128 server_name localhost;
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129
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130 add_header X-Port $server_port;
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131
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132 location / {
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133 return 204;
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134 }
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135
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136 location /502 {
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137 if ($server_port = %%PORT_3%%) {
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138 return 502;
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139 }
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140 return 204;
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141 }
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142 }
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143
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144 server {
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145 listen 127.0.0.1:%%PORT_4%%;
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146 server_name localhost;
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147 return 444;
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148 }
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149 }
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150
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151 EOF
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152
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153 $t->run();
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154
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155 ###############################################################################
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156
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157 my ($p1, $p2, $p3) = (port(1), port(2), port(3));
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158
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159 # Only requests for absent peer are moved to other peers if hash is consistent.
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160 # Check this by comparing two upstreams with different number of peers.
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161
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162 ok(!cmp_peers([iter('/', 20)], [iter('/2', 20)], $p2), 'inconsistent');
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163 ok(cmp_peers([iter('/c', 20)], [iter('/c2', 20)], $p2), 'consistent');
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164 ok(cmp_peers([iter('/cw', 20)], [iter('/cw2', 20)], $p2), 'consistent weight');
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165
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166 like(many('/?a=1', 10), qr/($p1|$p2|$p3): 10/, 'stable hash');
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167 like(many('/c?a=1', 10), qr/($p1|$p2|$p3): 10/, 'stable hash - consistent');
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168
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169 my @res = iter('/', 10);
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170
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171 is(@res, 10, 'all hashed peers');
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172
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173 @res = grep { $_ != $p3 } @res;
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174 my @res2 = iter('/502', 10);
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175
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176 is_deeply(\@res, \@res2, 'no proxy_next_upstream');
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177 isnt(@res2, 10, 'no proxy_next_upstream peers');
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178
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179 is(iter('/pnu/502', 10), 10, 'proxy_next_upstream peers');
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180
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181 @res = grep { $_ == $p1 } iter('/bad', 20);
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182 is(@res, 20, 'all hashed peers - bad');
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183
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184 @res = grep { $_ == $p1 } iter('/cbad', 20);
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185 is(@res, 20, 'all hashed peers - bad consistent');
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186
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187 ###############################################################################
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188
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189 # Returns true if two arrays follow consistency, i.e., they may only differ
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190 # by @args present in $p, but absent in $p2, for the same indices.
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191
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192 sub cmp_peers {
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193 my ($p, $p2, @args) = @_;
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194
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195 for my $i (0 .. $#$p) {
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196 next if @{$p}[$i] == @{$p2}[$i];
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197 next if (grep $_ == @{$p}[$i], @args);
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198 return 0;
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199 }
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200
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201 return 1;
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202 }
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203
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204 # series of requests, each with unique hash key
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205
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206 sub iter {
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207 my ($uri, $count) = @_;
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208 my @res;
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209
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210 for my $i (1 .. $count) {
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211 if (http_get("$uri/?a=$i") =~ /X-Port: (\d+)/) {
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212 push @res, $1 if defined $1;
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213 }
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214 }
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215
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216 return @res;
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217 }
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218
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219 sub many {
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220 my ($uri, $count) = @_;
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221 my %ports;
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222
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223 for (1 .. $count) {
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224 if (http_get($uri) =~ /X-Port: (\d+)/) {
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225 $ports{$1} = 0 unless defined $ports{$1};
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226 $ports{$1}++;
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227 }
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228 }
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229
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230 return join ', ', map { $_ . ": " . $ports{$_} } sort keys %ports;
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231 }
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232
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233 ###############################################################################