Added Converters/Formatters for Serialization of Json/MessagePack

AMWD.Common/Converters/IPAddressConverter.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+
+namespace Newtonsoft.Json
+{
+	/// <summary>
+	/// Converts an <see cref="IPAddress"/> from and to JSON.
+	/// </summary>
+	[System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage]
+	public class IPAddressConverter : JsonConverter
+	{
+		/// <summary>
+		/// List of known types to use this converver.
+		/// </summary>
+		public static readonly Type[] KnownTypes = new[]
+		{
+			typeof(IPAddress),
+			typeof(IPAddress[]),
+			typeof(List<IPAddress>),
+			typeof(IEnumerable<IPAddress>)
+		};
+
+		/// <inheritdoc/>
+		public override bool CanConvert(Type objectType)
+		{
+			return KnownTypes.Contains(objectType);
+		}
+
+		/// <inheritdoc/>
+		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+		{
+			if (reader.Value == null)
+				return null;
+
+			string str = (string)reader.Value;
+
+			if (typeof(IPAddress) == objectType)
+				return IPAddress.Parse(str);
+
+			var ips = str.Split(';').Select(s => IPAddress.Parse(s));
+
+			if (typeof(IPAddress[]) == objectType)
+				return ips.ToArray();
+
+			if (typeof(List<IPAddress>) == objectType)
+				return ips.ToList();
+
+			return ips;
+		}
+
+		/// <inheritdoc/>
+		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+		{
+			string str = null;
+			if (value == null)
+			{
+				writer.WriteValue(str);
+				return;
+			}
+
+			if (value is IPAddress addr)
+				str = addr.ToString();
+
+			if (value is IPAddress[] addrArray)
+				str = string.Join(";", addrArray.Select(ip => ip.ToString()));
+
+			if (value is List<IPAddress> addrList)
+				str = string.Join(";", addrList.Select(ip => ip.ToString()));
+
+			if (value is List<IPAddress> addrEnum)
+				str = string.Join(";", addrEnum.Select(ip => ip.ToString()));
+
+			writer.WriteValue(str);
+		}
+	}
+}