new file mode 100644
--- /dev/null
+++ b/proxy_ssi_body.t
@@ -0,0 +1,89 @@
+#!/usr/bin/perl
+
+# (C) Sergey Kandaurov
+# (C) Nginx, Inc.
+
+# Test for proxied subrequest with request body in file.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+use Socket qw/ CRLF /;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/http proxy ssi/)->plan(1);
+
+$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 / {
+        }
+
+        location /proxy {
+            proxy_pass http://127.0.0.1:8080/;
+            client_body_in_file_only on;
+            ssi on;
+        }
+    }
+}
+
+EOF
+
+$t->write_file('ssi.html', 'X<!--# include virtual="test.html" -->X');
+$t->write_file('test.html', 'YY');
+
+$t->run();
+
+###############################################################################
+
+# Request body cache file is released once a response is got.
+# If later a subrequest tries to use body, it fails.
+
+TODO: {
+local $TODO = 'prematurely pruned';
+
+like(http_get_body('/proxy/ssi.html', "1234567890"), qr/^XYYX$/m,
+	'body in file in proxied subrequest');
+
+}
+
+###############################################################################
+
+sub http_get_body {
+	my ($url, $body, %extra) = @_;
+
+	my $p = "GET $url HTTP/1.0" . CRLF
+		. "Host: localhost" . CRLF
+		. "Content-Length: " . (length $body) . CRLF . CRLF
+		. $body;
+
+	return http($p, %extra);
+}
+
+###############################################################################