Implementation of the basic functionallity

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

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace AMWD.Protocols.Modbus.Common.Contracts
+{
+	/// <summary>
+	/// Represents a Modbus connection.
+	/// </summary>
+	public interface IModbusConnection : IDisposable
+	{
+		/// <summary>
+		/// The connection type name.
+		/// </summary>
+		string Name { get; }
+
+		/// <summary>
+		/// Gets a value indicating whether the connection is open.
+		/// </summary>
+		bool IsConnected { get; }
+
+		/// <summary>
+		/// Opens the connection to the remote device.
+		/// </summary>
+		/// <param name="cancellationToken">A cancellation token used to propagate notification that this operation should be canceled.</param>
+		/// <returns>An awaitable <see cref="Task"/>.</returns>
+		Task ConnectAsync(CancellationToken cancellationToken = default);
+
+		/// <summary>
+		/// Closes the connection to the remote device.
+		/// </summary>
+		/// <param name="cancellationToken">A cancellation token used to propagate notification that this operation should be canceled.</param>
+		/// <returns>An awaitable <see cref="Task"/>.</returns>
+		Task DisconnectAsync(CancellationToken cancellationToken = default);
+
+		/// <summary>
+		/// Invokes a Modbus request.
+		/// </summary>
+		/// <param name="request">The Modbus request serialized in bytes.</param>
+		/// <param name="validateResponseComplete">A function to validate whether the response is complete.</param>
+		/// <param name="cancellationToken">A cancellation token used to propagate notification that this operation should be canceled.</param>
+		/// <returns>A list of <see cref="byte"/>s containing the response.</returns>
+		Task<IReadOnlyList<byte>> InvokeAsync(IReadOnlyList<byte> request, Func<IReadOnlyList<byte>, bool> validateResponseComplete, CancellationToken cancellationToken = default);
+	}
+}