From b7210d6d1ab48c859c7dde0fd9290dae010ddd15 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Tue, 18 Apr 2017 16:33:41 +0200
Subject: Get rid of stray messages when killing HTTP/2 request processes

---
 src/cowboy_http2.erl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cowboy_http2.erl b/src/cowboy_http2.erl
index d93a6cd..a280c5f 100644
--- a/src/cowboy_http2.erl
+++ b/src/cowboy_http2.erl
@@ -693,6 +693,9 @@ stream_call_terminate(StreamID, Reason, StreamState) ->
 stream_terminate_children([], _, Acc) ->
 	Acc;
 stream_terminate_children([{Pid, StreamID}|Tail], StreamID, Acc) ->
+	%% We unlink and flush the mailbox to avoid receiving a stray message.
+	unlink(Pid),
+	receive {'EXIT', Pid, _} -> ok after 0 -> ok end,
 	exit(Pid, kill),
 	stream_terminate_children(Tail, StreamID, Acc);
 stream_terminate_children([Child|Tail], StreamID, Acc) ->
-- 
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