Moved some more settings to the connection interface

AMWD.Protocols.Modbus.Common/Contracts/IModbusConnection.cs

@@ -25,6 +25,21 @@ namespace AMWD.Protocols.Modbus.Common.Contracts
 		/// </remarks>
 		TimeSpan IdleTimeout { get; set; }
 
+		/// <summary>
+		/// Gets or sets the maximum time until the connect attempt is given up.
+		/// </summary>
+		TimeSpan ConnectTimeout { get; set; }
+
+		/// <summary>
+		/// Gets or sets the receive time out value of the connection.
+		/// </summary>
+		TimeSpan ReadTimeout { get; set; }
+
+		/// <summary>
+		/// Gets or sets the send time out value of the connection.
+		/// </summary>
+		TimeSpan WriteTimeout { get; set; }
+
 		/// <summary>
 		/// Invokes a Modbus request.
 		/// </summary>

AMWD.Protocols.Modbus.Common/Utils/RequestQueueItem.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace AMWD.Protocols.Modbus.Common.Utils
+{
+	internal class RequestQueueItem
+	{
+		public byte[] Request { get; set; }
+
+		public Func<IReadOnlyList<byte>, bool> ValidateResponseComplete { get; set; }
+
+		public TaskCompletionSource<IReadOnlyList<byte>> TaskCompletionSource { get; set; }
+
+		public CancellationTokenSource CancellationTokenSource { get; set; }
+
+		public CancellationTokenRegistration CancellationTokenRegistration { get; set; }
+	}
+}