Add code

Endpoint/Status.cs

@@ -0,0 +1,30 @@
+namespace Endpoint
+{
+	/// <summary>
+	/// Status of an endpoint
+	/// </summary>
+	/// <remarks>The <see cref="StatusComparer"/> expects these to be in order of best-to-worst descending.</remarks>
+	public enum Status
+	{
+		/// <summary>
+		/// Service state is unknown - this will occur only before the first poll.
+		/// </summary>
+		Unknown,
+		/// <summary>
+		/// Service is working
+		/// </summary>
+		Up,
+		/// <summary>
+		/// Service can be resolved, but does not respond
+		/// </summary>
+		Timeout,
+		/// <summary>
+		/// Service can not be resolved
+		/// </summary>
+		Unreachable,
+		/// <summary>
+		/// Service is available, but returns an error message
+		/// </summary>
+		Error
+	}
+}