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Keepalive: do not reject connections with ready flag set. Instead, call read event handler explicitly to test if there are actually any unexpected data. This fixes unbuffered proxy connections not being cached with epoll and rtsig event methods.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 08 Sep 2011 17:12:07 +0400
parents 52ca695446d3
children
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#!/usr/bin/perl

# (C) Maxim Dounin

# Tests for proxy with keepalive.

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

use warnings;
use strict;

use Test::More;
use IO::Socket::INET;
use Socket qw/ CRLF /;

use Test::Nginx;

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

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

my $t = Test::Nginx->new()->has(qw/http proxy ssi rewrite/)
	->write_file_expand('nginx.conf', <<'EOF');

%%TEST_GLOBALS%%

daemon off;

events {
}

http {
    %%TEST_GLOBALS_HTTP%%

    upstream backend {
        server 127.0.0.1:8081;
        keepalive 1;
    }

    server {
        listen       127.0.0.1:8080;
        server_name  localhost;

        proxy_read_timeout 2s;
        proxy_http_version 1.1;
        proxy_set_header Connection "";

        location / {
            proxy_pass http://backend;
        }

        location /unbuffered/ {
            proxy_pass http://backend;
            proxy_buffering off;
        }

        location /inmemory/ {
            ssi on;
            rewrite ^ /ssi.html break;
        }
    }
}

EOF

$t->write_file('ssi.html',
	'<!--#include virtual="/include$request_uri" set="x" -->' .
	'set: <!--#echo var="x" -->');

$t->run_daemon(\&http_daemon);

eval {
	open OLDERR, ">&", \*STDERR; close STDERR;
	$t->run();
	open STDERR, ">&", \*OLDERR;
};
plan(skip_all => 'no keepalive patches') if $@;

$t->plan(50);

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

# There are 3 mostly independend modes of upstream operation:
#
# 1. Buffered, i.e. normal mode with "proxy_buffering on;"
# 2. Unbuffered, i.e. "proxy_buffering off;".
# 3. In memory, i.e. ssi <!--#include ... set -->
#
# These all should be tested.

my ($r, $n);

# buffered

like($r = http_get('/buffered/length1'), qr/SEE-THIS/, 'buffered');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/buffered/length2'), qr/X-Connection: $n.*SEE/ms, 'buffered 2');

like($r = http_get('/buffered/chunked1'), qr/SEE-THIS/, 'buffered chunked');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/buffered/chunked2'), qr/X-Connection: $n/,
	'buffered chunked 2');

like($r = http_get('/buffered/complex1'), qr/(0123456789){100}/,
	'buffered complex chunked');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/buffered/complex2'), qr/X-Connection: $n/,
	'buffered complex chunked 2');

like($r = http_get('/buffered/chunk01'), qr/200 OK/, 'buffered 0 chunk');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/buffered/chunk02'), qr/X-Connection: $n/, 'buffered 0 chunk 2');

like($r = http_head('/buffered/length/head1'), qr/(?!SEE-THIS)/,
	'buffered head');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_head('/buffered/length/head2'), qr/X-Connection: $n/,
	'buffered head 2');

like($r = http_get('/buffered/empty1'), qr/200 OK/, 'buffered empty');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/buffered/empty2'), qr/X-Connection: $n/, 'buffered empty 2');

like($r = http_get('/buffered/304nolen1'), qr/304 Not/, 'buffered 304');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/buffered/304nolen2'), qr/X-Connection: $n/, 'buffered 304 2');

like($r = http_get('/buffered/304len1'), qr/304 Not/,
	'buffered 304 with length');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/buffered/304len2'), qr/X-Connection: $n/,
	'buffered 304 with length 2');

# unbuffered

like($r = http_get('/unbuffered/length1'), qr/SEE-THIS/, 'unbuffered');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/unbuffered/length2'), qr/X-Connection: $n/, 'unbuffered 2');

like($r = http_get('/unbuffered/chunked1'), qr/SEE-THIS/, 'unbuffered chunked');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/unbuffered/chunked2'), qr/X-Connection: $n/,
	'unbuffered chunked 2');

like($r = http_get('/unbuffered/complex1'), qr/(0123456789){100}/,
	'unbuffered complex chunked');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/unbuffered/complex2'), qr/X-Connection: $n/,
	'unbuffered complex chunked 2');

like($r = http_get('/unbuffered/chunk01'), qr/200 OK/, 'unbuffered 0 chunk');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/unbuffered/chunk02'), qr/X-Connection: $n/,
	'unbuffered 0 chunk 2');

like($r = http_get('/unbuffered/empty1'), qr/200 OK/, 'unbuffered empty');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/unbuffered/empty2'), qr/X-Connection: $n/,
	'unbuffered empty 2');

like($r = http_head('/unbuffered/length/head1'), qr/(?!SEE-THIS)/,
	'unbuffered head');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_head('/unbuffered/length/head2'), qr/X-Connection: $n/,
	'unbuffered head 2');

like($r = http_get('/unbuffered/304nolen1'), qr/304 Not/, 'unbuffered 304');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/unbuffered/304nolen2'), qr/X-Connection: $n/,
	'unbuffered 304 2');

like($r = http_get('/unbuffered/304len1'), qr/304 Not/,
	'unbuffered 304 with length');
$r =~ m/X-Connection: (\d+)/; $n = $1;
like(http_get('/unbuffered/304len2'), qr/X-Connection: $n/,
	'unbuffered 304 with length 2');

# in memory

like($r = http_get('/inmemory/length1'), qr/SEE-THIS/, 'inmemory');
$r =~ m/SEE-THIS(\d+)/; $n = $1;
like(http_get('/inmemory/length2'), qr/SEE-THIS$n/, 'inmemory 2');

like($r = http_get('/inmemory/empty1'), qr/200 OK/, 'inmemory empty');
$r =~ m/SEE-THIS(\d+)/; $n = $1;
like(http_get('/inmemory/empty2'), qr/200 OK/, 'inmemory empty 2');

like($r = http_get('/inmemory/chunked1'), qr/SEE-THIS/, 'inmemory chunked');
$r =~ m/SEE-THIS(\d+)/; $n = $1;
like(http_get('/inmemory/chunked2'), qr/SEE-THIS$n/, 'inmemory chunked 2');

like($r = http_get('/inmemory/complex1'), qr/(0123456789){100}/,
	'inmemory complex chunked');
$r =~ m/SEE-THIS(\d+)/; $n = $1;
like(http_get('/inmemory/complex2'), qr/SEE-THIS$n/,
	'inmemory complex chunked 2');

like(http_get('/inmemory/chunk01'), qr/set: $/, 'inmemory 0 chunk');
like(http_get('/inmemory/chunk02'), qr/set: $/, 'inmemory 0 chunk 2');

# closed connection tests

like(http_get('/buffered/closed1'), qr/200 OK/, 'buffered closed 1');
like(http_get('/buffered/closed2'), qr/200 OK/, 'buffered closed 2');
like(http_get('/unbuffered/closed1'), qr/200 OK/, 'unbuffered closed 1');
like(http_get('/unbuffered/closed2'), qr/200 OK/, 'unbuffered closed 2');
like(http_get('/inmemory/closed1'), qr/200 OK/, 'inmemory closed 1');
like(http_get('/inmemory/closed2'), qr/200 OK/, 'inmemory closed 2');

# check for errors, shouldn't be any

like(`grep -F '[alert]' ${\($t->testdir())}/error.log`, qr/^$/s, 'no alerts');
like(`grep -F '[error]' ${\($t->testdir())}/error.log`, qr/^$/s, 'no errors');

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

sub http_daemon {
	my $server = IO::Socket::INET->new(
        	Proto => 'tcp',
		LocalHost => '127.0.0.1:8081',
        	Listen => 5,
        	Reuse => 1
	)
        	or die "Can't create listening socket: $!\n";

	my $ccount = 0;
        my $rcount = 0;

	# dumb server which is able to keep connections alive

	while (my $client = $server->accept()) {
		Test::Nginx::log_core('||', "connection from " . $client->peerhost());
        	$client->autoflush(1);
		$ccount++;

		while (1) {
			my $headers = '';
			my $uri = '';

        		while (<$client>) {
				Test::Nginx::log_core('||', $_);
				$headers .= $_;
                		last if (/^\x0d?\x0a?$/);
        		}

			last if $headers eq '';
			$rcount++;

			$uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;

			if ($uri =~ m/length/) {
				print $client
					"HTTP/1.1 200 OK" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF .
					"Content-Length: 26" . CRLF . CRLF;
				print $client "TEST-OK-IF-YOU-SEE-THIS" .
					sprintf("%03d", $ccount)
					unless $headers =~ /^HEAD/i;

                        } elsif ($uri =~ m/empty/) {
				print $client
					"HTTP/1.1 200 OK" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF .
					"Content-Length: 0" . CRLF . CRLF;

                        } elsif ($uri =~ m/304nolen/) {
				print $client
					"HTTP/1.1 304 Not Modified" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF . CRLF;

                        } elsif ($uri =~ m/304len/) {
				print $client
					"HTTP/1.1 304 Not Modified" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF .
					"Content-Length: 100" . CRLF . CRLF;

			} elsif ($uri =~ m/chunked/) {
				print $client
					"HTTP/1.1 200 OK" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF .
					"Transfer-Encoding: chunked" . CRLF .
					CRLF;
				print $client
					"1a" . CRLF .
					"TEST-OK-IF-YOU-SEE-THIS" .
					sprintf("%03d", $ccount) . CRLF .
					"0" . CRLF . CRLF
					unless $headers =~ /^HEAD/i;

			} elsif ($uri =~ m/complex/) {
				print $client
					"HTTP/1.1 200 OK" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF .
					"Transfer-Encoding: chunked" . CRLF .
					CRLF;

				if ($headers !~ /^HEAD/i) {
					for my $n (1..100) {
						print $client
							"a" . CRLF .
							"0123456789" . CRLF;
						select undef, undef, undef, 0.01
							if $n % 50 == 0;
					}
					print $client
						"1a" . CRLF .
						"TEST-OK-IF-YOU-SEE-THIS" .
						sprintf("%03d", $ccount) .
						CRLF .
						"0" . CRLF;
					select undef, undef, undef, 0.05;
					print $client CRLF;
				}

                        } elsif ($uri =~ m/chunk0/) {
				print $client
					"HTTP/1.1 200 OK" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF .
					"Transfer-Encoding: chunked" . CRLF .
					CRLF;
				print $client
					"0" . CRLF . CRLF
					unless $headers =~ /^HEAD/i;

			} elsif ($uri =~ m/closed/) {
				print $client
					"HTTP/1.1 200 OK" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF .
					"Connection: close" . CRLF .
					"Content-Length: 12" . CRLF . CRLF .
					"0123456789" . CRLF;
				last;

			} else {
        			print $client
					"HTTP/1.1 404 Not Found" . CRLF .
					"X-Request: $rcount" . CRLF .
					"X-Connection: $ccount" . CRLF .
					"Connection: close" . CRLF . CRLF .
					"Oops, '$uri' not found" . CRLF;
				last;
			}
		}

        	close $client;
	}
}

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