Mercurial > hg > nginx-tests

annotate proxy_upgrade.t @ 279:c754b1c79efe

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Tests: better timeout handling in proxy_upgrade.t. Now it uses nonblocking IO instead of eval + alarm model, and properly handles write timeouts as well as read ones.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 15 Apr 2013 22:43:51 +0000
parents 8a41f7d38cc3
children 3dd8c7acf3ad
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) Maxim Dounin
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4
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5 # Tests for http proxy upgrade support. In contrast to proxy_websocket.t
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6 # this test doesn't try to use binary WebSocket protocol, but uses simple
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7 # plain text protol instead.
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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 use IO::Poll;
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17 use IO::Select;
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18 use IO::Socket::INET;
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19 use Socket qw/ CRLF /;
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20
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21 BEGIN { use FindBin; chdir($FindBin::Bin); }
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22
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23 use lib 'lib';
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24 use Test::Nginx;
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25
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26 ###############################################################################
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27
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28 select STDERR; $| = 1;
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29 select STDOUT; $| = 1;
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30
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31 my $t = Test::Nginx->new()->has(qw/http proxy/)
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32 ->write_file_expand('nginx.conf', <<'EOF')->plan(27);
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33
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34 %%TEST_GLOBALS%%
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35
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36 daemon off;
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37
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38 events {
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39 }
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40
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41 http {
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42 %%TEST_GLOBALS_HTTP%%
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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 server_name localhost;
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47
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48 location / {
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49 proxy_pass http://127.0.0.1:8081;
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50 proxy_http_version 1.1;
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51 proxy_set_header Upgrade $http_upgrade;
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52 proxy_set_header Connection "Upgrade";
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53 proxy_read_timeout 2s;
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54 send_timeout 2s;
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55 }
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56 }
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57 }
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58
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59 EOF
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60
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61 $t->run_daemon(\&upgrade_fake_daemon);
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62 $t->run();
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63
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64 $t->waitforsocket('127.0.0.1:8081')
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65 or die "Can't start test backend";
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66
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67 ###############################################################################
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68
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69 TODO: {
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70 local $TODO = 'not yet' unless $t->has_version('1.3.13');
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71
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72 # establish connection
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73
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74 my $s = upgrade_connect();
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75 ok($s, "handshake");
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76
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77 SKIP: {
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78 skip "handshake failed", 22 unless $s;
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79
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80 # send a frame
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81
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82 upgrade_write($s, 'foo');
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83 is(upgrade_read($s), 'bar', "upgrade response");
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84
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85 # send some big frame
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86
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87 upgrade_write($s, 'foo' x 16384);
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88 like(upgrade_read($s), qr/^(bar){16384}$/, "upgrade big response");
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89
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90 # send multiple frames
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91
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92 for my $i (1 .. 10) {
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93 upgrade_write($s, ('foo' x 16384) . $i);
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94 upgrade_write($s, 'bazz' . $i);
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95 }
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96
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97 for my $i (1 .. 10) {
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98 like(upgrade_read($s), qr/^(bar){16384}\d+$/, "upgrade $i");
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99 is(upgrade_read($s), 'bazz' . $i, "upgrade small $i");
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100 }
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101 }
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102
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103 # establish connection with some pipelined data
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104 # and make sure they are correctly passed upstream
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105
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106 undef $s;
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107 $s = upgrade_connect(message => "foo");
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108 ok($s, "handshake pipelined");
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109
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110 SKIP: {
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111 skip "handshake failed", 2 unless $s;
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112
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113 is(upgrade_read($s), "bar", "response pipelined");
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114
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115 upgrade_write($s, "foo");
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116 is(upgrade_read($s), "bar", "next to pipelined");
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117 }
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118
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119 }
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120
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121 # connection should not be upgraded unless upgrade was actually
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122 # requested and allowed by configuration
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123
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124 my $s = upgrade_connect(noheader => 1);
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125 ok(!$s, "handshake noupgrade");
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126
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127 ###############################################################################
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128
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129 sub upgrade_connect {
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130 my (%opts) = @_;
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131
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132 my $s = IO::Socket::INET->new(
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133 Proto => 'tcp',
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134 PeerAddr => '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 # send request, $h->to_string
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139
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140 my $buf = "GET / HTTP/1.1" . CRLF
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141 . "Host: localhost" . CRLF
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142 . ($opts{noheader} ? '' : "Upgrade: foo" . CRLF)
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143 . "Connection: Upgade" . CRLF . CRLF;
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144
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145 $buf .= $opts{message} . CRLF if defined $opts{message};
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146
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147 local $SIG{PIPE} = 'IGNORE';
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148
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149 log_out($buf);
279
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150 $s->syswrite($buf);
263
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151
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152 # read response
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153
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154 my $got = '';
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155 $buf = '';
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156
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157 while (1) {
277
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158 $buf = upgrade_getline($s);
263
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159 last unless length $buf;
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160 log_in($buf);
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161 $got .= $buf;
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162 last if $got =~ /\x0d?\x0a\x0d?\x0a$/;
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163 }
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164
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165 # parse server response
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166
277
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167 return if $got !~ m!HTTP/1.1 101!;
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168
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169 # make sure next line is "handshaked"
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170
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171 return if upgrade_read($s) ne 'handshaked';
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172 return $s;
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173 }
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174
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175 sub upgrade_getline {
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176 my ($s) = @_;
279
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177 my ($h, $buf, $line);
277
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178
279
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179 ${*$s}->{_upgrade_private} ||= { b => ''};
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180 $h = ${*$s}->{_upgrade_private};
277
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181
279
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182 if ($h->{b} =~ /^(.*?\x0a)(.*)/ms) {
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183 $h->{b} = $2;
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184 return $1;
277
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185 }
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186
279
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187 $s->blocking(0);
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188 while (IO::Select->new($s)->can_read(1.5)) {
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189 my $n = $s->sysread($buf, 1024);
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190 last unless $n;
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191
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192 $h->{b} .= $buf;
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193
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194 if ($h->{b} =~ /^(.*?\x0a)(.*)/ms) {
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195 $h->{b} = $2;
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196 return $1;
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197 }
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198 };
263
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199 }
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200
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201 sub upgrade_write {
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202 my ($s, $message) = @_;
279
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203
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204 $message = $message . CRLF;
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205
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206 local $SIG{PIPE} = 'IGNORE';
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207
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208 $s->blocking(0);
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209 while (IO::Select->new($s)->can_write(1.5)) {
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210 my $n = $s->syswrite($message);
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211 last unless $n;
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212 $message = substr($message, $n);
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213 last unless length $message;
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214 }
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215
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216 if (length $message) {
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217 $s->close();
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218 }
263
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219 }
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220
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221 sub upgrade_read {
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222 my ($s) = @_;
277
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223 my $m = upgrade_getline($s);
263
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224 $m =~ s/\x0d?\x0a// if defined $m;
277
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225 log_in($m);
263
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226 return $m;
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227 }
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228
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229 ###############################################################################
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230
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231 sub upgrade_fake_daemon {
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232 my $server = IO::Socket::INET->new(
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233 Proto => 'tcp',
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234 LocalAddr => '127.0.0.1:8081',
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235 Listen => 5,
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236 Reuse => 1
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237 )
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238 or die "Can't create listening socket: $!\n";
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239
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240 while (my $client = $server->accept()) {
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241 upgrade_handle_client($client);
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242 }
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243 }
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244
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245 sub upgrade_handle_client {
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246 my ($client) = @_;
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247
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248 $client->autoflush(1);
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249 $client->blocking(0);
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250
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251 my $poll = IO::Poll->new;
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252
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253 my $handshake = 1;
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254 my $unfinished = '';
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255 my $buffer = '';
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256 my $n;
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257
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258 log2c("(new connection $client)");
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259
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260 while (1) {
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261 $poll->mask($client => ($buffer ? POLLIN|POLLOUT : POLLIN));
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262 my $p = $poll->poll(0.5);
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263 log2c("(poll $p)");
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264
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265 foreach my $reader ($poll->handles(POLLIN)) {
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266 $n = $client->sysread(my $chunk, 65536);
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267 return unless $n;
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268
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269 log2i($chunk);
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270
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diff changeset
271 if ($handshake) {
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272 $buffer .= $chunk;
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273 next unless $buffer =~ /\x0d?\x0a\x0d?\x0a$/;
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274
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275 log2c("(handshake done)");
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276
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277 $handshake = 0;
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278 $buffer = 'HTTP/1.1 101 Switching' . CRLF
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279 . 'Upgrade: foo' . CRLF
277
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diff changeset
280 . 'Connection: Upgrade' . CRLF . CRLF
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diff changeset
281 . 'handshaked' . CRLF;
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diff changeset
282
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diff changeset
283 log2o($buffer);
263
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284
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diff changeset
285 next;
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286 }
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287
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288 $unfinished .= $chunk;
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289
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290 if ($unfinished =~ m/\x0d?\x0a\z/) {
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291 $unfinished =~ s/foo/bar/g;
277
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292 log2o($unfinished);
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293 $buffer .= $unfinished;
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294 $unfinished = '';
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295 }
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296 }
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297
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298 foreach my $writer ($poll->handles(POLLOUT)) {
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299 next unless length $buffer;
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300 $n = $writer->syswrite($buffer);
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301 substr $buffer, 0, $n, '';
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302 }
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303 }
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304 }
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305
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306 sub log2i { Test::Nginx::log_core('|| <<', @_); }
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307 sub log2o { Test::Nginx::log_core('|| >>', @_); }
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308 sub log2c { Test::Nginx::log_core('||', @_); }
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309
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310 ###############################################################################