From bfa94d35d536edb1afa51d08e549a929c38f3dd7 Mon Sep 17 00:00:00 2001
From: Dirk Baeumer <dirkb@microsoft.com>
Date: Tue, 7 Mar 2017 11:55:26 +0100
Subject: [PATCH] FIxes #196: No way to respond to malformed message

---
 protocol.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/protocol.md b/protocol.md
index e65cb0b..0d47104 100644
--- a/protocol.md
+++ b/protocol.md
@@ -165,7 +165,7 @@ interface ResponseMessage extends Message {
 	/**
 	 * The request id.
 	 */
-	id: number | string;
+	id: number | string | null;
 
 	/**
 	 * The result of a request. This can be omitted in