Implement SocketNodeInstance

src/Microsoft.AspNetCore.NodeServices/HostingModels/PhysicalConnections/StreamConnection.cs

@@ -0,0 +1,26 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+
+namespace Microsoft.AspNetCore.NodeServices.HostingModels.PhysicalConnections
+{
+    internal abstract class StreamConnection : IDisposable
+    {
+        public abstract Task<Stream> Open(string address);
+        public abstract void Dispose();
+
+        public static StreamConnection Create()
+        {
+            var useNamedPipes = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+            if (useNamedPipes)
+            {
+                return new NamedPipeConnection();
+            }
+            else
+            {
+                return new UnixDomainSocketConnection();
+            }
+        }
+    }
+}