From 9cfda0c070b24850aea05b35516d236cb44d5249 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Thu, 17 Dec 2015 18:04:16 +0900
Subject: [PATCH] Update doc

---
 lib/nghttp2_session.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/nghttp2_session.c b/lib/nghttp2_session.c
index 94b18d41..43474b96 100644
--- a/lib/nghttp2_session.c
+++ b/lib/nghttp2_session.c
@@ -3633,6 +3633,8 @@ static int session_process_headers_frame(nghttp2_session *session) {
       return nghttp2_session_on_response_headers_received(session, frame,
                                                           stream);
     }
+    /* This handles the case when server received HEADERS for stream
+       in reserved stream from client.  That is protocol error. */
     frame->headers.cat = NGHTTP2_HCAT_HEADERS;
     return nghttp2_session_on_headers_received(session, frame, stream);
   }