new file mode 100644
--- /dev/null
+++ b/proxy-chunked.t
@@ -0,0 +1,106 @@
+#!/usr/bin/perl
+
+# (C) Maxim Dounin
+
+# Test for http backend returning response with Transfer-Encoding: chunked.
+
+# Since nginx uses HTTP/1.0 in requests to backend it's backend bug, but we
+# want to handle this gracefully.  And anyway chunked support will be required
+# for HTTP/1.1 backend connections.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More tests => 1;
+
+use IO::Select;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new();
+
+$t->write_file_expand('nginx.conf', <<'EOF');
+
+master_process off;
+daemon         off;
+
+events {
+}
+
+http {
+    access_log    off;
+    root          %%TESTDIR%%;
+
+    client_body_temp_path  %%TESTDIR%%/client_body_temp;
+    fastcgi_temp_path      %%TESTDIR%%/fastcgi_temp;
+    proxy_temp_path        %%TESTDIR%%/proxy_temp;
+
+    server {
+        listen       127.0.0.1:8080;
+        server_name  localhost;
+
+        location / {
+            proxy_pass http://127.0.0.1:8081;
+            proxy_read_timeout 1s;
+        }
+    }
+}
+
+EOF
+
+$t->run_daemon(\&http_chunked_daemon);
+$t->run();
+
+###############################################################################
+
+{
+local $TODO = 'not yet';
+
+like(http_get('/'), qr/\x0d\x0aSEE-THIS$/s, 'chunked');
+}
+
+###############################################################################
+
+sub http_chunked_daemon {
+	my $server = IO::Socket::INET->new(
+		Proto => 'tcp',
+		LocalAddr => '127.0.0.1:8081',
+		Listen => 5,
+		Reuse => 1
+	)
+		or die "Can't create listening socket: $!\n";
+
+	while (my $client = $server->accept()) {
+		$client->autoflush(1);
+
+		while (<$client>) {
+			last if (/^\x0d?\x0a?$/);
+		}
+
+		print $client <<'EOF';
+HTTP/1.1 200 OK
+Connection: close
+Transfer-Encoding: chunked
+
+9
+SEE-THIS
+
+0
+
+EOF
+
+		close $client;
+	}
+}
+
+###############################################################################