Tests: socket leaks with zero available bytes (ticket #2367).

Author: pluknet

Diff for: proxy_available.t

@@ -0,0 +1,137 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Tests for http proxy module with available bytes counting.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+use IO::Select;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx qw/ :DEFAULT http_end /;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/http proxy/)->plan(2);
+
+$t->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;
+
+        location /buffered {
+            proxy_pass http://127.0.0.1:8081;
+            proxy_buffer_size 512;
+        }
+
+        location /unbuffered {
+            proxy_pass http://127.0.0.1:8082;
+            proxy_buffer_size 512;
+            proxy_buffering off;
+        }
+    }
+}
+
+EOF
+
+$t->run_daemon(\&http_daemon, port(8081));
+$t->run_daemon(\&http_daemon, port(8082));
+$t->run();
+
+$t->waitforsocket('127.0.0.1:' . port(8081));
+$t->waitforsocket('127.0.0.1:' . port(8082));
+
+###############################################################################
+
+# ticket #2367: socket leaks with EPOLLRDHUP
+# due to missing rev->ready reset on rev->available == 0
+#
+# to reproduce leaks, the first part of the response should fit proxy buffer
+
+my $s = http_get('/buffered', start => 1);
+IO::Select->new($s)->can_read(3);
+
+$t->reload();
+
+TODO: {
+local $TODO = 'not yet' if $^O eq 'linux' and !$t->has_version('1.23.1');
+
+like(http_end($s), qr/AND-THIS/, 'zero available - buffered');
+
+}
+
+$s = http_get('/unbuffered', start => 1);
+IO::Select->new($s)->can_read(3);
+
+$t->stop();
+
+like(http_end($s), qr/AND-THIS/, 'zero available - unbuffered');
+
+$t->todo_alerts() if $^O eq 'linux' and !$t->has_version('1.23.1');
+
+###############################################################################
+
+sub http_daemon {
+	my ($port) = @_;
+
+	my $server = IO::Socket::INET->new(
+		Proto => 'tcp',
+		LocalHost => "127.0.0.1:$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 = '';
+		my $uri = '';
+
+		while (<$client>) {
+			$headers .= $_;
+			last if (/^\x0d?\x0a?$/);
+		}
+
+		next if $headers eq '';
+
+		my $r = <<EOF;
+HTTP/1.1 200 OK
+Connection: close
+
+EOF
+
+		$r = $r . 'x' x (512 - length($r));
+		print $client $r;
+
+		select undef, undef, undef, 1.1;
+		print $client 'AND-THIS';
+	}
+}
+
+###############################################################################