gistfile1.diff

diff --git a/lib/handler/file.c b/lib/handler/file.c
index 88af84b..f490b87 100644
--- a/lib/handler/file.c
+++ b/lib/handler/file.c
@@ -350,6 +350,11 @@ Opened:
     /* obtain mime type */
     mime_type = h2o_mimemap_get_type(self->mimemap, h2o_get_filext(rpath, rpath_len));
 
+    if (h2o_memis(req->path.base, req->path.len, H2O_STRLIT("/"))) {
+        h2o_vector_reserve(&req->pool, (h2o_vector_t *)&req->http2_push_urls, sizeof(req->http2_push_urls.entries[0]), req->http2_push_urls.size + 1);
+        req->http2_push_urls.entries[req->http2_push_urls.size++] = (h2o_iovec_t){H2O_STRLIT("https://kazuhooku.com:18081/assets/css/main.css")};
+    }
+
     /* return file */
     do_send_file(generator, req, 200, "OK", mime_type, is_get);
     return 0;