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annotate stream_upstream_least_conn.t @ 566:4296379213c8

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Tests: refactored stream least_conn tests similar to e4ff43e00d84.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 29 Apr 2015 15:53:58 +0300
parents ff49e1c00b35
children 824754da4afc
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05cbe9e2def8 Tests: basic stream tests for upstream least_conn.
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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 # Stream tests for upstream least_conn 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 use IO::Select;
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16
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17 BEGIN { use FindBin; chdir($FindBin::Bin); }
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18
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19 use lib 'lib';
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20 use Test::Nginx;
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21
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22 ###############################################################################
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23
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24 select STDERR; $| = 1;
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25 select STDOUT; $| = 1;
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26
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27 my $t = Test::Nginx->new()->has(qw/stream stream_upstream_least_conn/)->plan(2)
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28 ->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 stream {
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38 upstream u {
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39 least_conn;
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40 server 127.0.0.1:8081;
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41 server 127.0.0.1:8082;
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42 }
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43
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44 server {
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45 listen 127.0.0.1:8080;
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46 proxy_pass u;
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47 }
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48 }
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49
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50 EOF
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51
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52 $t->run_daemon(\&stream_daemon, 8081);
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53 $t->run_daemon(\&stream_daemon, 8082);
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54 $t->run();
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55
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56 $t->waitforsocket('127.0.0.1:8081');
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57 $t->waitforsocket('127.0.0.1:8082');
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58
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59 ###############################################################################
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60
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61 is(many('.', 10), '8081: 5, 8082: 5', 'balanced');
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62
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63 my @sockets;
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64 for (1 .. 2) {
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65 my $s = stream_connect();
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66 stream_write($s, 'w');
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67 push @sockets, $s;
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68 }
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69
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70 select undef, undef, undef, 0.2;
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71
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72 is(many('.', 10), '8082: 10', 'least_conn');
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73
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74 ###############################################################################
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75
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76 sub many {
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77 my ($data, $count, %opts) = @_;
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78 my (%ports, $peer);
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79
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80 $peer = $opts{peer};
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81
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82 for (1 .. $count) {
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83 if (stream_get($data, $peer) =~ /(\d+)/) {
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84 $ports{$1} = 0 unless defined $ports{$1};
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85 $ports{$1}++;
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86 }
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87 }
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88
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89 return join ', ', map { $_ . ": " . $ports{$_} } sort keys %ports;
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90 }
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91
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92 sub parallel {
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93 my ($data, $count, %opts) = @_;
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94 my (@sockets, %ports, $peer);
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95
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96 $peer = $opts{peer} || undef;
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97
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98 for (1 .. $count) {
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99 my $s = stream_connect($peer);
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100 push @sockets, $s;
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101 stream_write($s, $data);
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102 select undef, undef, undef, 0.2;
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103 }
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104
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105 for (1 .. $count) {
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106 my $s = pop @sockets;
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107 if (stream_read($s) =~ /(\d+)/) {
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108 $ports{$1} = 0 unless defined $ports{$1};
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109 $ports{$1}++;
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110 }
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111 close $s;
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112 }
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113
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114 return join ', ', map { $_ . ": " . $ports{$_} } sort keys %ports;
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115 }
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116
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117 sub stream_get {
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118 my ($data, $peer) = @_;
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119
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120 my $s = stream_connect($peer);
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121 stream_write($s, $data);
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122
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123 $data = '';
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124 while (my $buf = stream_read($s)) {
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125 $data .= $buf;
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126 }
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127 return $data;
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128 }
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129
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130 sub stream_connect {
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131 my $peer = shift;
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132 my $s = IO::Socket::INET->new(
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133 Proto => 'tcp',
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134 PeerAddr => $peer || '127.0.0.1:8080'
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135 )
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136 or die "Can't connect to nginx: $!\n";
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137
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138 return $s;
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139 }
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140
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141 sub stream_write {
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142 my ($s, $message) = @_;
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143
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144 local $SIG{PIPE} = 'IGNORE';
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145
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146 $s->blocking(0);
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147 while (IO::Select->new($s)->can_write(1.5)) {
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148 my $n = $s->syswrite($message);
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149 last unless $n;
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150 $message = substr($message, $n);
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151 last unless length $message;
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152 }
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153
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154 if (length $message) {
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155 $s->close();
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156 }
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157 }
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158
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159 sub stream_read {
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160 my ($s) = @_;
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161 my ($buf);
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162
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163 $s->blocking(0);
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164 if (IO::Select->new($s)->can_read(3)) {
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165 $s->sysread($buf, 1024);
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166 };
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167
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168 log_in($buf);
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169 return $buf;
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170 }
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171
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172 ###############################################################################
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173
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174 sub stream_daemon {
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175 my ($port) = @_;
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176
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177 my $server = IO::Socket::INET->new(
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178 Proto => 'tcp',
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179 LocalAddr => '127.0.0.1',
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180 LocalPort => $port,
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181 Listen => 5,
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182 Reuse => 1
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183 )
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184 or die "Can't create listening socket: $!\n";
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185
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186 my $sel = IO::Select->new($server);
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187
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188 local $SIG{PIPE} = 'IGNORE';
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189
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190 while (my @ready = $sel->can_read) {
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191 foreach my $fh (@ready) {
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192 if ($server == $fh) {
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193 my $new = $fh->accept;
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194 $new->autoflush(1);
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195 $sel->add($new);
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196
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197 } elsif (stream_handle_client($fh)) {
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198 $sel->remove($fh);
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199 $fh->close;
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200 }
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201 }
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202 }
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203 }
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204
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205 sub stream_handle_client {
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206 my ($client) = @_;
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207
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208 log2c("(new connection $client)");
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209
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210 $client->sysread(my $buffer, 65536) or return 1;
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211
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212 log2i("$client $buffer");
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213
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214 my $port = $client->sockport();
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215
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216 if ($buffer =~ /w/ && $port == 8081) {
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217 Test::Nginx::log_core('||', "$port: sleep(2.5)");
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218 select undef, undef, undef, 2.5;
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219 }
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220
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221 $buffer = $port;
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222
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223 log2o("$client $buffer");
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224
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225 $client->syswrite($buffer);
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226
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227 return 1;
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228 }
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229
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230 sub log2i { Test::Nginx::log_core('|| <<', @_); }
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231 sub log2o { Test::Nginx::log_core('|| >>', @_); }
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232 sub log2c { Test::Nginx::log_core('||', @_); }
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233
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234 ###############################################################################