Move SocketFactory to Jellyfin.Networking

src/Jellyfin.Networking/Udp/SocketFactory.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Net;
+using System.Net.Sockets;
+using MediaBrowser.Model.Net;
+
+namespace Jellyfin.Networking.Udp
+{
+    /// <summary>
+    /// Factory class to create different kinds of sockets.
+    /// </summary>
+    public class SocketFactory : ISocketFactory
+    {
+        /// <inheritdoc />
+        public Socket CreateUdpBroadcastSocket(int localPort)
+        {
+            if (localPort < 0)
+            {
+                throw new ArgumentException("localPort cannot be less than zero.", nameof(localPort));
+            }
+
+            var socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
+            try
+            {
+                socket.EnableBroadcast = true;
+                socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
+                socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
+                socket.Bind(new IPEndPoint(IPAddress.Any, localPort));
+
+                return socket;
+            }
+            catch
+            {
+                socket.Dispose();
+
+                throw;
+            }
+        }
+    }
+}