make the IWebSocketServer interface internal

and IVT for Microsoft.Diagnostics.WebSocketServer that holds the implementation

src/Microsoft.Diagnostics.NETCore.Client/Microsoft.Diagnostics.NETCore.Client.csproj

@@ -32,6 +32,7 @@
     <InternalsVisibleTo Include="dotnet-trace" />
     <InternalsVisibleTo Include="Microsoft.Diagnostics.Monitoring" />
     <InternalsVisibleTo Include="Microsoft.Diagnostics.Monitoring.EventPipe" />
+    <InternalsVisibleTo Include="Microsoft.Diagnostics.WebSocketServer" />
     <!-- Temporary until Diagnostic Apis are finalized-->
     <InternalsVisibleTo Include="Microsoft.Diagnostics.Monitoring.WebApi" />
     <InternalsVisibleTo Include="Microsoft.Diagnostics.NETCore.Client.UnitTests" />

src/Microsoft.Diagnostics.NETCore.Client/WebSocketServer/IWebSocketServer.cs

@@ -12,7 +12,7 @@ namespace Microsoft.Diagnostics.NETCore.Client.WebSocketServer;
 
 // This interface abstracts the web socket server implementation used by dotnet-dsrouter
 // in order to avoid a dependency on ASP.NET in the client library.
-public interface IWebSocketServer
+internal interface IWebSocketServer
 {
     public Task StartServer(Uri uri, CancellationToken cancellationToken);
 

src/Microsoft.Diagnostics.NETCore.Client/WebSocketServer/IWebSocketStreamAdapter.cs

@@ -5,7 +5,7 @@ namespace Microsoft.Diagnostics.NETCore.Client.WebSocketServer;
 
 // The streams returned by IWebSocketServer implement the usual .NET Stream class, but they also
 // expose a way to check if the underlying websocket connection is still open.
-public interface IWebSocketStreamAdapter
+internal interface IWebSocketStreamAdapter
 {
     public bool IsConnected { get; }
 }