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annotate h2_priority.t @ 1752:ba6e24e38f03

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Tests: improved stop_daemons() to send signal again. As was observed, it's possible that a signal to complete a uwsgi daemon can be ignored while it is starting up, which results in tests hang due to eternal waiting on child processes termination. Notably, it is seen when running tests with a high number of prove jobs on a low-profile VM against nginx with broken modules and/or configuration. To reproduce: $ TEST_NGINX_GLOBALS=ERROR prove -j16 uwsgi*.t Inspecting uwsgi under ktrace on FreeBSD confirms that a SIGTERM signal is ignored at the very beginning of uwsgi startup. It is then replaced with a default action after listen(), thus waiting until uwsgi is ready to accept new TCP connections doesn't completely solve the hang window. The fix is to retry sending a signal some time after waitpid(WNOHANG) continuously demonstrated no progress with reaping a signaled process. It is modelled after f13ead27f89c that improved stop() for nginx.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 29 Dec 2021 22:29:23 +0300
parents 5ac6efbe5552
children 236d038dc04a
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 HTTP/2 protocol with priority.
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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 use Test::Nginx::HTTP2;
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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 http_v2/)->plan(20)
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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
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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 server {
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40 listen 127.0.0.1:8080 http2;
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41 server_name localhost;
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42 }
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43 }
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44
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45 EOF
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46
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47 $t->run();
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48
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49 # file size is slightly beyond initial window size: 2**16 + 80 bytes
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50
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51 $t->write_file('t1.html',
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52 join('', map { sprintf "X%04dXXX", $_ } (1 .. 8202)));
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53
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54 $t->write_file('t2.html', 'SEE-THIS');
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55
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56 ###############################################################################
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57
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58 # stream muliplexing + PRIORITY frames
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59
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60 my $s = Test::Nginx::HTTP2->new();
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61 my $sid = $s->new_stream({ path => '/t1.html' });
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62 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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63
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64 my $sid2 = $s->new_stream({ path => '/t2.html' });
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65 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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66
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67 $s->h2_priority(0, $sid);
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68 $s->h2_priority(255, $sid2);
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69
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70 $s->h2_window(2**17, $sid);
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71 $s->h2_window(2**17, $sid2);
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72 $s->h2_window(2**17);
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73
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74 my $frames = $s->read(all => [
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75 { sid => $sid, fin => 1 },
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76 { sid => $sid2, fin => 1 }
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77 ]);
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78
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79 my @data = grep { $_->{type} eq "DATA" } @$frames;
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80 is(join(' ', map { $_->{sid} } @data), "$sid2 $sid", 'weight - PRIORITY 1');
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81
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82 # and vice versa
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83
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84 $s = Test::Nginx::HTTP2->new();
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85 $sid = $s->new_stream({ path => '/t1.html' });
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86 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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87
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88 $sid2 = $s->new_stream({ path => '/t2.html' });
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89 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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90
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91 $s->h2_priority(255, $sid);
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92 $s->h2_priority(0, $sid2);
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93
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94 $s->h2_window(2**17, $sid);
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95 $s->h2_window(2**17, $sid2);
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96 $s->h2_window(2**17);
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98 $frames = $s->read(all => [
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99 { sid => $sid, fin => 1 },
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100 { sid => $sid2, fin => 1 }
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101 ]);
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102
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103 @data = grep { $_->{type} eq "DATA" } @$frames;
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104 is(join(' ', map { $_->{sid} } @data), "$sid $sid2", 'weight - PRIORITY 2');
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105
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106 # stream muliplexing + HEADERS PRIORITY flag
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107
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108 $s = Test::Nginx::HTTP2->new();
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109 $sid = $s->new_stream({ path => '/t1.html', prio => 0 });
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110 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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111
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112 $sid2 = $s->new_stream({ path => '/t2.html', prio => 255 });
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113 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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114
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115 $s->h2_window(2**17, $sid);
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116 $s->h2_window(2**17, $sid2);
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117 $s->h2_window(2**17);
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118
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119 $frames = $s->read(all => [
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120 { sid => $sid, fin => 1 },
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121 { sid => $sid2, fin => 1 }
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122 ]);
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123
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124 @data = grep { $_->{type} eq "DATA" } @$frames;
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125 my $sids = join ' ', map { $_->{sid} } @data;
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126 is($sids, "$sid2 $sid", 'weight - HEADERS PRIORITY 1');
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127
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128 # and vice versa
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129
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130 $s = Test::Nginx::HTTP2->new();
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131 $sid = $s->new_stream({ path => '/t1.html', prio => 255 });
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132 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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133
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134 $sid2 = $s->new_stream({ path => '/t2.html', prio => 0 });
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135 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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136
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137 $s->h2_window(2**17, $sid);
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138 $s->h2_window(2**17, $sid2);
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139 $s->h2_window(2**17);
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140
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141 $frames = $s->read(all => [
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142 { sid => $sid, fin => 1 },
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143 { sid => $sid2, fin => 1 }
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144 ]);
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145
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146 @data = grep { $_->{type} eq "DATA" } @$frames;
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147 $sids = join ' ', map { $_->{sid} } @data;
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148 is($sids, "$sid $sid2", 'weight - HEADERS PRIORITY 2');
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149
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150 # 5.3.1. Stream Dependencies
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151
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152 # PRIORITY frame
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153
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154 $s = Test::Nginx::HTTP2->new();
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155
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156 $s->h2_priority(16, 3, 0);
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157 $s->h2_priority(16, 1, 3);
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158
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159 $sid = $s->new_stream({ path => '/t1.html' });
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160 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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161
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162 $sid2 = $s->new_stream({ path => '/t2.html' });
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163 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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164
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165 $s->h2_window(2**17, $sid);
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166 $s->h2_window(2**17, $sid2);
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167 $s->h2_window(2**17);
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168
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169 $frames = $s->read(all => [
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170 { sid => $sid, fin => 1 },
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171 { sid => $sid2, fin => 1 },
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172 ]);
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173
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174 @data = grep { $_->{type} eq "DATA" } @$frames;
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175 $sids = join ' ', map { $_->{sid} } @data;
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176 is($sids, "$sid2 $sid", 'dependency - PRIORITY 1');
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177
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178 # and vice versa
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179
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180 $s = Test::Nginx::HTTP2->new();
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181
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182 $s->h2_priority(16, 1, 0);
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183 $s->h2_priority(16, 3, 1);
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184
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185 $sid = $s->new_stream({ path => '/t1.html' });
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186 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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187
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188 $sid2 = $s->new_stream({ path => '/t2.html' });
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189 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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190
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191 $s->h2_window(2**17, $sid);
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192 $s->h2_window(2**17, $sid2);
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193 $s->h2_window(2**17);
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194
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195 $frames = $s->read(all => [
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196 { sid => $sid, fin => 1 },
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197 { sid => $sid2, fin => 1 },
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198 ]);
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199
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200 @data = grep { $_->{type} eq "DATA" } @$frames;
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201 $sids = join ' ', map { $_->{sid} } @data;
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202 is($sids, "$sid $sid2", 'dependency - PRIORITY 2');
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203
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204 # PRIORITY - self dependency
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205
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206 # 5.3.1. Stream Dependencies
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207 # A stream cannot depend on itself. An endpoint MUST treat this as a
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208 # stream error of type PROTOCOL_ERROR.
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209 # Instead, we respond with a connection error of type PROTOCOL_ERROR.
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210
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211 $s = Test::Nginx::HTTP2->new();
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212 $sid = $s->new_stream();
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213 $s->read(all => [{ sid => $sid, fin => 1 }]);
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214
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215 $s->h2_priority(0, $sid, $sid);
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216 $frames = $s->read(all => [{ type => 'GOAWAY' }]);
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217
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218 my ($frame) = grep { $_->{type} eq "GOAWAY" } @$frames;
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219 is($frame->{last_sid}, $sid, 'dependency - PRIORITY self - GOAWAY');
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220 is($frame->{code}, 1, 'dependency - PRIORITY self - PROTOCOL_ERROR');
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221
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222 # HEADERS PRIORITY flag, reprioritize prior PRIORITY frame records
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223
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224 $s = Test::Nginx::HTTP2->new();
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225
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226 $s->h2_priority(16, 1, 0);
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227 $s->h2_priority(16, 3, 0);
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228
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229 $sid = $s->new_stream({ path => '/t1.html', dep => 3 });
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230 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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231
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232 $sid2 = $s->new_stream({ path => '/t2.html' });
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233 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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234
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235 $s->h2_window(2**17, $sid);
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236 $s->h2_window(2**17, $sid2);
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237 $s->h2_window(2**17);
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238
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239 $frames = $s->read(all => [
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240 { sid => $sid, fin => 1 },
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241 { sid => $sid2, fin => 1 },
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242 ]);
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243
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244 @data = grep { $_->{type} eq "DATA" } @$frames;
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245 $sids = join ' ', map { $_->{sid} } @data;
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246 is($sids, "$sid2 $sid", 'dependency - HEADERS PRIORITY 1');
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247
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248 # and vice versa
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249
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250 $s = Test::Nginx::HTTP2->new();
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251
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252 $s->h2_priority(16, 1, 0);
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253 $s->h2_priority(16, 3, 0);
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254
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255 $sid = $s->new_stream({ path => '/t1.html' });
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256 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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257
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258 $sid2 = $s->new_stream({ path => '/t2.html', dep => 1 });
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259 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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260
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261 $s->h2_window(2**17, $sid);
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262 $s->h2_window(2**17, $sid2);
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263 $s->h2_window(2**17);
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264
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265 $frames = $s->read(all => [
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266 { sid => $sid, fin => 1 },
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267 { sid => $sid2, fin => 1 },
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268 ]);
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269
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270 @data = grep { $_->{type} eq "DATA" } @$frames;
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271 $sids = join ' ', map { $_->{sid} } @data;
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272 is($sids, "$sid $sid2", 'dependency - HEADERS PRIORITY 2');
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273
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274 # HEADERS - self dependency
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275
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276 $s = Test::Nginx::HTTP2->new();
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277 $sid = $s->new_stream({ dep => 1 });
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278 $frames = $s->read(all => [{ type => 'GOAWAY' }]);
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279
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280 ($frame) = grep { $_->{type} eq "GOAWAY" } @$frames;
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281 is($frame->{last_sid}, 0, 'dependency - HEADERS self - GOAWAY');
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282 is($frame->{code}, 1, 'dependency - HEADERS self - PROTOCOL_ERROR');
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283
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284 # PRIORITY frame, weighted dependencies
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285
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286 $s = Test::Nginx::HTTP2->new();
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287
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288 $s->h2_priority(16, 5, 0);
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289 $s->h2_priority(255, 1, 5);
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290 $s->h2_priority(0, 3, 5);
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291
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292 $sid = $s->new_stream({ path => '/t1.html' });
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293 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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294
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295 $sid2 = $s->new_stream({ path => '/t2.html' });
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296 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
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297
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298 my $sid3 = $s->new_stream({ path => '/t2.html' });
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299 $s->read(all => [{ sid => $sid3, fin => 0x4 }]);
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300
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301 $s->h2_window(2**16, 1);
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302 $s->h2_window(2**16, 3);
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303 $s->h2_window(2**16, 5);
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304 $s->h2_window(2**16);
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305
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306 $frames = $s->read(all => [
876
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307 { sid => $sid, fin => 1 },
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308 { sid => $sid2, fin => 1 },
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309 { sid => $sid3, fin => 1 },
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310 ]);
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311
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312 @data = grep { $_->{type} eq "DATA" } @$frames;
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313 $sids = join ' ', map { $_->{sid} } @data;
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314 is($sids, "$sid3 $sid $sid2", 'weighted dependency - PRIORITY 1');
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315
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316 # and vice versa
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317
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318 $s = Test::Nginx::HTTP2->new();
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319
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320 $s->h2_priority(16, 5, 0);
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321 $s->h2_priority(0, 1, 5);
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322 $s->h2_priority(255, 3, 5);
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323
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324 $sid = $s->new_stream({ path => '/t1.html' });
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325 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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326
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327 $sid2 = $s->new_stream({ path => '/t2.html' });
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328 $s->read(all => [{ sid => $sid2, fin => 0x4 }]);
876
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329
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330 $sid3 = $s->new_stream({ path => '/t2.html' });
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331 $s->read(all => [{ sid => $sid3, fin => 0x4 }]);
876
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332
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333 $s->h2_window(2**16, 1);
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334 $s->h2_window(2**16, 3);
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335 $s->h2_window(2**16, 5);
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336 $s->h2_window(2**16);
876
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337
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338 $frames = $s->read(all => [
876
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339 { sid => $sid, fin => 1 },
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340 { sid => $sid2, fin => 1 },
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341 { sid => $sid3, fin => 1 },
a6abbfed42c0 Tests: split HTTP/2 tests, HTTP2 package introduced.
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342 ]);
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343
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344 @data = grep { $_->{type} eq "DATA" } @$frames;
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345 $sids = join ' ', map { $_->{sid} } @data;
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346 is($sids, "$sid3 $sid2 $sid", 'weighted dependency - PRIORITY 2');
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347
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348 # PRIORITY - reprioritization with circular dependency - after [3] removed
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349 # initial dependency tree:
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350 # 1 <- [3] <- 5
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351
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352 $s = Test::Nginx::HTTP2->new();
876
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353
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354 $s->h2_window(2**18);
876
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355
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356 $s->h2_priority(16, 1, 0);
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357 $s->h2_priority(16, 3, 1);
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358 $s->h2_priority(16, 5, 3);
876
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359
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360 $sid = $s->new_stream({ path => '/t1.html' });
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361 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
876
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362
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363 $sid2 = $s->new_stream({ path => '/t1.html' });
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364 $s->read(all => [{ sid => $sid2, length => 2**16 - 1 }]);
876
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365
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366 $sid3 = $s->new_stream({ path => '/t1.html' });
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367 $s->read(all => [{ sid => $sid3, length => 2**16 - 1 }]);
876
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368
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369 $s->h2_window(2**16, $sid2);
876
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370
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371 $frames = $s->read(all => [{ sid => $sid2, fin => 1 }]);
876
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372 $sids = join ' ', map { $_->{sid} } grep { $_->{type} eq "DATA" } @$frames;
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373 is($sids, $sid2, 'removed dependency');
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374
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375 for (1 .. 40) {
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376 $s->read(all => [{ sid => $s->new_stream(), fin => 1 }]);
876
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377 }
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378
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379 # make circular dependency
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380 # 1 <- 5 -- current dependency tree before reprioritization
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381 # 5 <- 1
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382 # 1 <- 5
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383
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384 $s->h2_priority(16, 1, 5);
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385 $s->h2_priority(16, 5, 1);
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386
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387 $s->h2_window(2**16, $sid);
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388 $s->h2_window(2**16, $sid3);
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389
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390 $frames = $s->read(all => [
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391 { sid => $sid, fin => 1 },
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392 { sid => $sid3, fin => 1 },
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393 ]);
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394
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395 ($frame) = grep { $_->{type} eq "DATA" && $_->{sid} == $sid } @$frames;
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396 is($frame->{length}, 81, 'removed dependency - first stream');
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397
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398 ($frame) = grep { $_->{type} eq "DATA" && $_->{sid} == $sid3 } @$frames;
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399 is($frame->{length}, 81, 'removed dependency - last stream');
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400
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401 # PRIORITY - reprioritization with circular dependency - exclusive [5]
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402 # 1 <- [5] <- 3
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403
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404 $s = Test::Nginx::HTTP2->new();
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405
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406 $s->h2_window(2**18);
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407
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408 $s->h2_priority(16, 1, 0);
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409 $s->h2_priority(16, 3, 1);
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410 $s->h2_priority(16, 5, 1, excl => 1);
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411
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412 $sid = $s->new_stream({ path => '/t1.html' });
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413 $s->read(all => [{ sid => $sid, length => 2**16 - 1 }]);
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414
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415 $sid2 = $s->new_stream({ path => '/t1.html' });
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416 $s->read(all => [{ sid => $sid2, length => 2**16 - 1 }]);
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417
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418 $sid3 = $s->new_stream({ path => '/t1.html' });
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419 $s->read(all => [{ sid => $sid3, length => 2**16 - 1 }]);
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420
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421 $s->h2_window(2**16, $sid);
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422
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423 $frames = $s->read(all => [{ sid => $sid, fin => 1 }]);
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424 $sids = join ' ', map { $_->{sid} } grep { $_->{type} eq "DATA" } @$frames;
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425 is($sids, $sid, 'exclusive dependency - parent removed');
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426
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427 # make circular dependency
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428 # 5 <- 3 -- current dependency tree before reprioritization
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429 # 3 <- 5
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430
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431 $s->h2_priority(16, 5, 3);
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432
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433 $s->h2_window(2**16, $sid2);
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434 $s->h2_window(2**16, $sid3);
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435
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436 $frames = $s->read(all => [
876
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437 { sid => $sid2, fin => 1 },
a6abbfed42c0 Tests: split HTTP/2 tests, HTTP2 package introduced.
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438 { sid => $sid3, fin => 1 },
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439 ]);
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440
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441 ($frame) = grep { $_->{type} eq "DATA" && $_->{sid} == $sid2 } @$frames;
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442 is($frame->{length}, 81, 'exclusive dependency - first stream');
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443
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444 ($frame) = grep { $_->{type} eq "DATA" && $_->{sid} == $sid3 } @$frames;
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445 is($frame->{length}, 81, 'exclusive dependency - last stream');
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446
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447 ###############################################################################