From bb8e45383e9619ddf3de8fc63974ca8ebdbc3da5 Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Thu, 17 Mar 2022 08:38:00 -0400
Subject: [PATCH] Update README

---
 README.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/README.md b/README.md
index 6fff449..3d6e55f 100644
--- a/README.md
+++ b/README.md
@@ -183,6 +183,15 @@ The followings are built-in mappings:
 | webm       | video/webm                  | zip        | application/zip             |
 | mp3        | audio/mp3                   | wasm       | application/wasm            |
 
+### File request handler
+
+```cpp
+// The handler is called right before the response is sent to a client
+svr.set_file_request_handler([](const Request &req, Response &res) {
+  ...
+});
+```
+
 NOTE: These static file server methods are not thread-safe.
 
 ### Logging