proxy_next_upstream_tries.t

#!/usr/bin/perl

# (C) Sergey Kandaurov
# (C) Nginx, Inc.

# Tests for http proxy module, proxy_next_upstream_tries
# and proxy_next_upstream_timeout directives.

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

use warnings;
use strict;

use Test::More;

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

use lib 'lib';
use Test::Nginx;

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

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

my $t = Test::Nginx->new()->has(qw/http proxy rewrite/);

$t->write_file_expand('nginx.conf', <<'EOF');

%%TEST_GLOBALS%%

daemon off;

events {
}

http {
    %%TEST_GLOBALS_HTTP%%

    upstream u {
        server 127.0.0.1:8081;
        server 127.0.0.1:8081;
        server 127.0.0.1:8081;
    }

    upstream u2 {
        server 127.0.0.1:8081;
        server 127.0.0.1:8081 backup;
        server 127.0.0.1:8081 backup;
    }

    upstream u3 {
        server 127.0.0.1:8082;
        server 127.0.0.1:8082;
        server 127.0.0.1:8082;
    }

    upstream u4 {
        server 127.0.0.1:8082;
        server 127.0.0.1:8082 backup;
        server 127.0.0.1:8082 backup;
    }

    server {
        listen       127.0.0.1:8080;
        server_name  localhost;

        proxy_next_upstream http_404;
        proxy_intercept_errors on;
        error_page 404 /404;

        location /tries {
            proxy_pass http://u;
            proxy_next_upstream_tries 2;
        }

        location /tries/backup {
            proxy_pass http://u2;
            proxy_next_upstream_tries 2;
        }

        location /timeout {
            proxy_pass http://u3;
            proxy_next_upstream_timeout 1500ms;
        }

        location /timeout/backup {
            proxy_pass http://u4;
            proxy_next_upstream_timeout 1500ms;
        }

        location /404 {
            return 200 x${upstream_status}x;
        }
    }
}

EOF

$t->run_daemon(\&http_daemon, 8081);
$t->run_daemon(\&http_daemon, 8082);
$t->try_run('no proxy_next_upstream_tries')->plan(4);

$t->waitforsocket('127.0.0.1:8081');
$t->waitforsocket('127.0.0.1:8082');

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

like(http_get('/tries'), qr/x404, 404x/, 'tries');
like(http_get('/tries/backup'), qr/x404, 404x/, 'tries backup');

# two tries fit into 1.5s

like(http_get('/timeout'), qr/x404, 404x/, 'timeout');
like(http_get('/timeout/backup'), qr/x404, 404x/, 'timeout backup');

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

sub http_daemon {
	my ($port) = @_;

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

	local $SIG{PIPE} = 'IGNORE';

	while (my $client = $server->accept()) {
		$client->autoflush(1);

		my $headers = '';

		while (<$client>) {
			$headers .= $_;
			last if (/^\x0d?\x0a?$/);
		}

		next if $headers eq '';

		if ($port == 8082) {
			Test::Nginx::log_core('||', "$port: sleep(1)");
			select undef, undef, undef, 1;
		}

		Test::Nginx::log_core('||', "$port: response, 404");
		print $client <<EOF;
HTTP/1.1 404 Not Found
Connection: close

EOF

	} continue {
		close $client;
	}
}

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