use streams

MQTTnet.Core/Channel/IMqttCommunicationChannel.cs

@@ -1,6 +1,6 @@
 using System.Threading.Tasks;
 using MQTTnet.Core.Client;
-using System;
+using System.IO;
 
 namespace MQTTnet.Core.Channel
 {
@@ -9,14 +9,7 @@ namespace MQTTnet.Core.Channel
         Task ConnectAsync(MqttClientOptions options);
 
         Task DisconnectAsync();
-
-        Task WriteAsync(byte[] buffer);
-
-        /// <summary>
-        /// get the currently available number of bytes without reading them
-        /// </summary>
-        int Peek();
-
-        Task<ArraySegment<byte>> ReadAsync(int length, byte[] buffer);
+        
+        Stream Stream { get; }
     }
 }