annotate proxy_variables.t @ 1961:fe6f22da53ec default tip

Tests: tests for usage of discarded body. The client_max_body_size limit should be ignored when the request body is already discarded. In HTTP/1.x, this is done by checking the r->discard_body flag when the body is being discarded, and because r->headers_in.content_length_n is 0 when it's already discarded. This, however, does not happen with HTTP/2 and HTTP/3, and therefore "error_page 413" does not work without relaxing the limit. Further, with proxy_pass, r->headers_in.content_length_n is used to determine length of the request body, and therefore is not correct if discarding of the request body isn't yet complete. While discarding the request body, r->headers_in.content_length_n contains the rest of the body to discard (or, in case of chunked request body, the rest of the current chunk to discard). Similarly, the $content_length variable uses r->headers_in.content_length if available, and also incorrect. The $content_length variable is used when proxying with fastcgi_pass, grpc_pass, and uwsgi_pass (scgi_pass uses the value calculated based on the actual request body buffers, and therefore works correctly).
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 27 Apr 2024 18:55:50 +0300
parents 144c6ce732e4
children
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1 #!/usr/bin/perl
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2
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3 # (C) Sergey Kandaurov
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4 # (C) Nginx, Inc.
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5
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6 # Tests for http proxy module with upstream variables.
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7
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8 ###############################################################################
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9
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10 use warnings;
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11 use strict;
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12
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13 use Test::More;
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14
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15 BEGIN { use FindBin; chdir($FindBin::Bin); }
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16
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17 use lib 'lib';
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18 use Test::Nginx;
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19
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20 ###############################################################################
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21
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22 select STDERR; $| = 1;
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23 select STDOUT; $| = 1;
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24
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25 my $t = Test::Nginx->new()->has(qw/http proxy/)->plan(4)
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26 ->write_file_expand('nginx.conf', <<'EOF');
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27
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28 %%TEST_GLOBALS%%
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29
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30 daemon off;
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31
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32 events {
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33 }
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34
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35 http {
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36 %%TEST_GLOBALS_HTTP%%
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37
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38 log_format u $uri:$upstream_response_length:$upstream_bytes_received:
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39 $upstream_bytes_sent:$upstream_http_x_len;
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40
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41 server {
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42 listen 127.0.0.1:8080;
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43 server_name localhost;
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44
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45 location / {
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46 proxy_pass http://127.0.0.1:8081;
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47 access_log %%TESTDIR%%/test.log u;
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48 }
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49 }
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50 }
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51
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52 EOF
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53
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54 $t->run_daemon(\&http_daemon, port(8081));
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55 $t->run();
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56
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57 $t->waitforsocket('127.0.0.1:' . port(8081));
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58
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59 ###############################################################################
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60
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61 my $r;
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62
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63 my ($l1) = ($r = http_get('/')) =~ /X-Len: (\d+)/;
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64 like($r, qr/SEE-THIS/, 'proxy request');
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65
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66 my ($l2) = ($r = http_get('/multi')) =~ /X-Len: (\d+)/;
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67 like($r, qr/AND-THIS/, 'proxy request with multiple packets');
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68
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69 $t->stop();
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70
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71 my $f = $t->read_file('test.log');
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72 Test::Nginx::log_core('||', $f);
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73
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74 like($f, qr!^/:23:68:$l1:$l1!m, 'log - response length');
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75 like($f, qr!^/multi:32:77:$l2:$l2!m, 'log - response length - multi packets');
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76
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77 ###############################################################################
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78
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79 sub http_daemon {
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80 my ($port) = @_;
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81 my $server = IO::Socket::INET->new(
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82 Proto => 'tcp',
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83 LocalHost => '127.0.0.1',
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84 LocalPort => $port,
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85 Listen => 5,
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86 Reuse => 1
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87 )
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88 or die "Can't create listening socket: $!\n";
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89
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90 local $SIG{PIPE} = 'IGNORE';
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91
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92 while (my $client = $server->accept()) {
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93 $client->autoflush(1);
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94
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95 my $headers = '';
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96 my $uri = '';
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97
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98 while (<$client>) {
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99 $headers .= $_;
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100 last if (/^\x0d?\x0a?$/);
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101 }
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102
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103 $uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;
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104 my $len = length($headers);
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105
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106 if ($uri eq '/') {
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107 print $client <<"EOF";
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108 HTTP/1.1 200 OK
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109 Connection: close
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110 X-Len: $len
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111
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112 EOF
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113 print $client "TEST-OK-IF-YOU-SEE-THIS"
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114 unless $headers =~ /^HEAD/i;
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115
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116 } elsif ($uri eq '/multi') {
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117
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118 print $client <<"EOF";
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119 HTTP/1.1 200 OK
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120 Connection: close
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121 X-Len: $len
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122
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123 TEST-OK-IF-YOU-SEE-THIS
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124 EOF
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125
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126 select undef, undef, undef, 0.1;
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127 print $client 'AND-THIS';
520
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128 }
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129
1419
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130 close $client;
520
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131 }
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132 }
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133
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134 ###############################################################################