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annotate limit_conn.t @ 1961:fe6f22da53ec default tip

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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 $content_length variable is used when proxying with fastcgi_pass, grpc_pass, and uwsgi_pass (scgi_pass uses the value calculated based on the actual request body buffers, and therefore works correctly).
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 27 Apr 2024 18:55:50 +0300
parents 196d33c2bb45
children
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1 #!/usr/bin/perl
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2
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3 # (C) Sergey Kandaurov
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4
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5 # limit_req based tests for nginx limit_conn module.
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6
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7 ###############################################################################
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8
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9 use warnings;
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10 use strict;
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11
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12 use Test::More;
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13
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14 BEGIN { use FindBin; chdir($FindBin::Bin); }
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15
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16 use lib 'lib';
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17 use Test::Nginx;
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18
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19 ###############################################################################
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20
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21 select STDERR; $| = 1;
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22 select STDOUT; $| = 1;
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23
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24 my $t = Test::Nginx->new()->has(qw/http proxy limit_conn limit_req/);
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25
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26 $t->write_file_expand('nginx.conf', <<'EOF')->plan(8);
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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 limit_req_zone $binary_remote_addr zone=req:1m rate=30r/m;
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39
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40 limit_conn_zone $binary_remote_addr zone=zone:1m;
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41 limit_conn_zone $binary_remote_addr zone=zone2:1m;
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42 limit_conn_zone $binary_remote_addr zone=custom:1m;
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43
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44 server {
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45 listen 127.0.0.1:8081;
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46 server_name localhost;
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47
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48 location /w {
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49 limit_req zone=req burst=10;
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50 }
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51 }
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52
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53 server {
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54 listen 127.0.0.1:8080;
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55 server_name localhost;
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56
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57 location / {
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58 proxy_pass http://127.0.0.1:8081;
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59 limit_conn zone 1;
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60 }
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61
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62 location /1 {
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63 limit_conn zone 1;
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64 }
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65
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66 location /zone {
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67 limit_conn zone2 1;
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68 }
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70 location /unlim {
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71 limit_conn zone 5;
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72 }
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74 location /custom {
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75 proxy_pass http://127.0.0.1:8081/;
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76 limit_conn_log_level info;
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77 limit_conn_status 501;
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78 limit_conn custom 1;
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79 }
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80 }
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81 }
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82
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83 EOF
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84
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85 $t->run();
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86
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87 ###############################################################################
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88
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89 # charge limit_req
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90
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91 http_get('/w');
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92
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93 # same and other zones in different locations
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94
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95 my $s = http_get('/w', start => 1);
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96 like(http_get('/'), qr/^HTTP\/1.. 503 /, 'rejected');
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97 like(http_get('/1'), qr/^HTTP\/1.. 503 /, 'rejected different location');
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98 unlike(http_get('/zone'), qr/^HTTP\/1.. 503 /, 'passed different zone');
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99
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100 close $s;
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101 unlike(http_get('/1'), qr/^HTTP\/1.. 503 /, 'passed');
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102
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103 # custom error code and log level
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104
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105 $s = http_get('/custom/w', start => 1);
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106 like(http_get('/custom'), qr/^HTTP\/1.. 501 /, 'limit_conn_status');
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107
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108 like($t->read_file('error.log'),
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109 qr/\[info\].*limiting connections by zone "custom"/,
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110 'limit_conn_log_level');
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111
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112 # limited after unlimited
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113
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114 $s = http_get('/w', start => 1);
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115 like(http_get('/unlim'), qr/404 Not Found/, 'unlimited passed');
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116 like(http_get('/'), qr/503 Service/, 'limited rejected');
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117
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118 ###############################################################################