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annotate limit_conn_dry_run.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 $content_length variable is used when proxying with fastcgi_pass, grpc_pass, and uwsgi_pass (scgi_pass uses the value calculated based on the actual request body buffers, and therefore works correctly).
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 27 Apr 2024 18:55:50 +0300
parents 5ac6efbe5552
children
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1 #!/usr/bin/perl
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2
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3 # (C) Sergey Kandaurov
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4 # (C) Nginx, Inc.
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5
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6 # Tests for limit_conn_dry_run directive, limit_conn_status variable.
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7
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8 ###############################################################################
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9
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10 use warnings;
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11 use strict;
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12
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13 use Test::More;
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14
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15 BEGIN { use FindBin; chdir($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 limit_conn limit_req/);
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26
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27 $t->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 limit_req_zone $binary_remote_addr zone=req:1m rate=30r/m;
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40 limit_conn_zone $binary_remote_addr zone=zone:1m;
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41
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42 log_format test $uri:$limit_conn_status;
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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 add_header X-Status $limit_conn_status always;
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58 access_log %%TESTDIR%%/test.log test;
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59
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60 location /reject {
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61 proxy_pass http://127.0.0.1:8081/w;
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62 limit_conn zone 1;
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63 }
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64
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65 location /dry {
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66 limit_conn zone 1;
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67 limit_conn_dry_run on;
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68 }
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69
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70 location / { }
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71 }
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72 }
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73
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74 EOF
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75
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76 $t->write_file('w', '');
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77 $t->run()->plan(6);
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78
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79 ###############################################################################
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80
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81 like(http_get('/reject'), qr/ 200 .*PASSED/s, 'passed');
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82
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83 my $s = http_get('/reject', start => 1);
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84 like(http_get('/reject'), qr/ 503 .*REJECTED(?!_)/s, 'rejected');
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85 like(http_get('/dry'), qr/ 404 .*REJECTED_DRY_RUN/s, 'rejected dry run');
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86 unlike(http_get('/'), qr/X-Status/, 'no limit');
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87
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88 close $s;
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89
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90 $t->stop();
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91
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92 like($t->read_file('error.log'), qr/limiting connections, dry/, 'log dry run');
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93 like($t->read_file('test.log'), qr|^/:-|m, 'log not found');
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94
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95 ###############################################################################