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annotate upstream_least_conn.t @ 294:71e275487aeb

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Tests: upstream least_conn and ip_hash tests.
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 08 Jun 2013 04:10:53 +0400
parents
children 86fa2a5a37ea
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294
71e275487aeb Tests: upstream least_conn and ip_hash tests.
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1 #!/usr/bin/perl
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2
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3 # (C) Maxim Dounin
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4
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5 # Tests for upstream least_conn balancer module.
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6
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7 ###############################################################################
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8
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9 use warnings;
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10 use strict;
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11
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12 use Test::More;
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13
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14 use Socket qw/ CRLF /;
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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 upstream_least_conn/)->plan(2);
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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 least_conn;
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42 server 127.0.0.1:8081;
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43 server 127.0.0.1:8082;
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44 }
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45
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46 server {
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47 listen 127.0.0.1:8080;
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48 server_name localhost;
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49
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50 location / {
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51 proxy_pass http://u;
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52 }
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53 }
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54 }
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55
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56 EOF
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57
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58 $t->run_daemon(\&http_daemon, 8081);
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59 $t->run_daemon(\&http_daemon, 8082);
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60 $t->run();
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61
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62 $t->waitforsocket('127.0.0.1:8081');
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63 $t->waitforsocket('127.0.0.1:8082');
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64
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65 ###############################################################################
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66
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67 is(many('/', 10), '8081: 5, 8082: 5', 'balanced');
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68 is(parallel('/w', 10), '8081: 1, 8082: 9', 'least conn');
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69
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70 ###############################################################################
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71
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72 sub many {
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73 my ($uri, $count) = @_;
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74 my %ports;
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75
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76 for (1 .. $count) {
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77 if (http_get($uri) =~ /X-Port: (\d+)/) {
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78 $ports{$1} = 0 unless defined $ports{$1};
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79 $ports{$1}++;
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80 }
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81 }
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82
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83 return join ', ', map { $_ . ": " . $ports{$_} } sort keys %ports;
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84 }
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85
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86 sub parallel {
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87 my ($uri, $count, %opts) = @_;
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88 my (@sockets, %ports);
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89
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90 for (1 .. $count) {
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91 push(@sockets, http_start($uri));
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92 select undef, undef, undef, 0.1;
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93 }
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94
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95 for (1 .. $count) {
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96 if (http_end(pop(@sockets)) =~ /X-Port: (\d+)/) {
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97 $ports{$1} = 0 unless defined $ports{$1};
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98 $ports{$1}++;
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99 }
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100 }
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101
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102 return join ', ', map { $_ . ": " . $ports{$_} } sort keys %ports;
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103 }
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104
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105 sub http_start {
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106 my ($uri) = @_;
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107
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108 my $s;
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109 my $request = "GET $uri HTTP/1.0" . CRLF . CRLF;
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110
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111 eval {
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112 local $SIG{ALRM} = sub { die "timeout\n" };
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113 local $SIG{PIPE} = sub { die "sigpipe\n" };
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114 alarm(3);
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115 $s = IO::Socket::INET->new(
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116 Proto => 'tcp',
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117 PeerAddr => '127.0.0.1:8080'
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118 );
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119 log_out($request);
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120 $s->print($request);
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121 alarm(0);
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122 };
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123 alarm(0);
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124 if ($@) {
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125 log_in("died: $@");
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126 return undef;
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127 }
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128 return $s;
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129 }
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130
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131 sub http_end {
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132 my ($s) = @_;
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133 my $reply;
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134
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135 eval {
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136 local $SIG{ALRM} = sub { die "timeout\n" };
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137 local $SIG{PIPE} = sub { die "sigpipe\n" };
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138 alarm(3);
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139 local $/;
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140 $reply = $s->getline();
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141 log_in($reply);
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142 alarm(0);
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143 };
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144 alarm(0);
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145 if ($@) {
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146 log_in("died: $@");
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147 return undef;
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148 }
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149 return $reply;
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150 }
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151
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152 ###############################################################################
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153
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154 sub http_daemon {
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155 my ($port) = @_;
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156
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157 my $server = IO::Socket::INET->new(
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158 Proto => 'tcp',
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159 LocalHost => '127.0.0.1',
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160 LocalPort => $port,
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161 Listen => 5,
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162 Reuse => 1
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163 )
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164 or die "Can't create listening socket: $!\n";
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165
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166 local $SIG{PIPE} = 'IGNORE';
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167
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168 while (my $client = $server->accept()) {
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169 $client->autoflush(1);
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170
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171 my $headers = '';
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172 my $uri = '';
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173
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174 while (<$client>) {
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175 $headers .= $_;
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176 last if (/^\x0d?\x0a?$/);
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177 }
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178
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179 $uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;
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180
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181 if ($uri eq '/w' && $port == 8081) {
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182 Test::Nginx::log_core('||', "$port: sleep(1.5)");
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183 select undef, undef, undef, 1.5;
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184 }
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185
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186 Test::Nginx::log_core('||', "$port: response, 200");
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187 print $client <<EOF;
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188 HTTP/1.1 200 OK
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189 Connection: close
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190 X-Port: $port
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191
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192 OK
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193 EOF
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194
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195 close $client;
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196 }
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197 }
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198
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199 ###############################################################################