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annotate proxy_cache_error.t @ 1266:b17f27fa9081

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Tests: tests for "header already sent" alerts on backend errors.
author Maxim Dounin <mdounin@mdounin.ru>
date Fri, 05 Jan 2018 08:27:26 +0300
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children f94e79aad895
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1266
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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 cache, "header already sent" alerts on backend errors,
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6 # http://mailman.nginx.org/pipermail/nginx-devel/2018-January/010737.html.
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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 cache/)->plan(1)
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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 proxy_cache_path %%TESTDIR%%/cache levels=1:2
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39 keys_zone=NAME:1m;
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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 proxy_cache NAME;
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48
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49 proxy_read_timeout 100ms;
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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 127.0.0.1:8081;
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55 server_name localhost;
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56
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57 location / {
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58 limit_rate 512;
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59 expires 1m;
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60 }
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61 }
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62 }
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63
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64 EOF
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65
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66 $t->write_file('big.html', 'x' x 1024);
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67
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68 $t->run();
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69
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70 ###############################################################################
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71
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72 # make a HEAD request; as cache is enabled, nginx convert HEAD to GET
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73 # and will set u->pipe->downstream_error to suppress sending the response
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74 # body to the client
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75
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76 like(http_head('/big.html'), qr/200 OK/, 'head request');
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77
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78 # once proxy_read_timeout expires, nginx will call
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79 # ngx_http_finalize_upstream_request() with u->pipe->downstream_error set
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80 # and rc = NGX_HTTP_GATEWAY_TIMEOUT; after revision ad3f342f14ba046c this
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81 # will result in ngx_http_finalize_request(NGX_HTTP_GATEWAY_TIMEOUT),
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82 # leading to an attempt to return additional error response and
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83 # the "header already sent" alert
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84
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85 $t->todo_alerts();
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86
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87 ###############################################################################