From 07cde7c6def6eeed0174b270229e7d5175673d87 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Sun, 26 Feb 2017 13:23:31 +0100
Subject: Unknown HTTP/2 frames are ignored

---
 src/cow_http2.erl | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/cow_http2.erl b/src/cow_http2.erl
index 91e6985..460e6f1 100644
--- a/src/cow_http2.erl
+++ b/src/cow_http2.erl
@@ -251,6 +251,11 @@ parse(<< _:24, 9:8, _:9, 0:31, _/bits >>) ->
 parse(<< Len:24, 9:8, _:5, FlagEndHeaders:1, _:3, StreamID:31, HeaderBlockFragment:Len/binary, Rest/bits >>) ->
 	{ok, {continuation, StreamID, parse_head_fin(FlagEndHeaders), HeaderBlockFragment}, Rest};
 %%
+%% Unknown frames are ignored.
+%%
+parse(<< Len:24, Type:8, _:40, _:Len/binary, Rest/bits >>) when Type > 9 ->
+	{ignore, Rest};
+%%
 %% Incomplete frames.
 %%
 parse(_) ->
-- 
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