view gzip_flush.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 882267679006
children
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#!/usr/bin/perl

# (C) Maxim Dounin

# Tests for gzip filter module.

###############################################################################

use warnings;
use strict;

use Test::More;

BEGIN { use FindBin; chdir($FindBin::Bin); }

use lib 'lib';
use Test::Nginx qw/ :DEFAULT :gzip /;

###############################################################################

select STDERR; $| = 1;
select STDOUT; $| = 1;

my $t = Test::Nginx->new()->has(qw/http gzip perl/)->plan(2)
	->write_file_expand('nginx.conf', <<'EOF');

%%TEST_GLOBALS%%

daemon off;

events {
}

http {
    %%TEST_GLOBALS_HTTP%%

    server {
        listen       127.0.0.1:8080;
        server_name  localhost;

        gzip on;
        gzip_min_length 0;

        location / {
            perl 'sub {
                my $r = shift;
                $r->send_http_header("text/html");
                return OK if $r->header_only;
                $r->print("DA");
                $r->flush();
                $r->flush();
                $r->print("TA");
                return OK;
            }';
        }
    }
}

EOF

$t->run();

###############################################################################

like(http_get('/'), qr/DATA/, 'request with flush');

# gzip filter wasn't able to handle empty flush buffers, see
# http://nginx.org/pipermail/nginx/2010-November/023693.html

http_gzip_like(http_gzip_request('/'), qr/DATA/, 'gzip request with flush');

###############################################################################