From b3a6919ea00f1b93c55ebf426755ee871c88be55 Mon Sep 17 00:00:00 2001
From: Christian Kratky <christian.kratky@googlemail.com>
Date: Sun, 30 Apr 2017 19:32:52 +0200
Subject: [PATCH] Add support for complex device IDs.

---
 MQTTnet.Core/Serializer/DefaultMqttV311PacketSerializer.cs | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/MQTTnet.Core/Serializer/DefaultMqttV311PacketSerializer.cs b/MQTTnet.Core/Serializer/DefaultMqttV311PacketSerializer.cs
index d7a3924..61c6c8e 100644
--- a/MQTTnet.Core/Serializer/DefaultMqttV311PacketSerializer.cs
+++ b/MQTTnet.Core/Serializer/DefaultMqttV311PacketSerializer.cs
@@ -354,11 +354,6 @@ namespace MQTTnet.Core.Serializer
             {
                 throw new MqttProtocolViolationException("CleanSession must be set if ClientId is empty [MQTT-3.1.3-7].");
             }
-
-            if (!string.IsNullOrEmpty(packet.ClientId) && !Regex.IsMatch(packet.ClientId, "^[a-zA-Z0-9]*$"))
-            {
-                throw new MqttProtocolViolationException("ClientId contains invalid characters [MQTT-3.1.3-5].");
-            }
         }
 
         private void ValidatePublishPacket(MqttPublishPacket packet)