Add Connected event and default to break state

UIX/Microsoft/Iris/Debug/Data/InterpreterCommand.cs

@@ -2,7 +2,7 @@
 
 public enum InterpreterCommand : byte
 {
-    Continue,
     Break,
+    Continue,
     Step,
 }

UIX/Microsoft/Iris/Debug/IDebuggerClient.cs

@@ -3,15 +3,8 @@ using System;
 
 namespace Microsoft.Iris.Debug;
 
-public interface IDebuggerClient
+public interface IDebuggerClient : IDebuggerState
 {
-    /// <summary>
-    /// The URI the client is connected to.
-    /// </summary>
-    Uri ConnectionUri { get; }
-
-    InterpreterCommand DebuggerCommand { get; set; }
-
     event Action<InterpreterCommand> InterpreterStateChanged;
 
     /// <summary>

UIX/Microsoft/Iris/Debug/IDebuggerServer.cs

@@ -2,10 +2,8 @@
 
 namespace Microsoft.Iris.Debug;
 
-internal interface IDebuggerServer
+internal interface IDebuggerServer : IDebuggerState
 {
-    InterpreterCommand DebuggerCommand { get; set; }
-
     /// <summary>
     /// Logs the context, opcode, and operands of an instruction
     /// decoded by <c>Microsoft.Iris.Markup.Interpreter</c>.

UIX/Microsoft/Iris/Debug/IDebuggerState.cs

@@ -0,0 +1,19 @@
+using Microsoft.Iris.Debug.Data;
+using System;
+
+namespace Microsoft.Iris.Debug;
+
+public interface IDebuggerState
+{
+    /// <summary>
+    /// The URI the client is connected to.
+    /// </summary>
+    public Uri ConnectionUri { get; }
+
+    InterpreterCommand DebuggerCommand { get; set; }
+
+    /// <summary>
+    /// Fired when a connection is established.
+    /// </summary>
+    public event Action<IDebuggerState, object> Connected;
+}

UIX/Microsoft/Iris/Debug/SystemNet/NetDebuggerClient.cs

@@ -12,7 +12,7 @@ public class NetDebuggerClient : IDebuggerClient, IDisposable
     private readonly Socket _socket;
     private readonly ConcurrentQueue<byte[]> _outQueue = new();
     private readonly IFormatter _formatter;
-    private InterpreterCommand _uibCommand = InterpreterCommand.Continue;
+    private InterpreterCommand _uibCommand;
 
     public Uri ConnectionUri { get; }
 
@@ -31,6 +31,7 @@ public class NetDebuggerClient : IDebuggerClient, IDisposable
     public event EventHandler<InterpreterEntry> InterpreterExecute;
     public event Action<string> DispatcherStep;
     public event Action<InterpreterCommand> InterpreterStateChanged;
+    public event Action<IDebuggerState, object> Connected;
 
     public NetDebuggerClient(string connectionUri) : this(connectionUri is null ? null : new Uri(connectionUri))
     {
@@ -127,6 +128,8 @@ public class NetDebuggerClient : IDebuggerClient, IDisposable
             catch { }
         }
 
+        Connected?.Invoke(this, _socket);
+
         System.Threading.Thread receiveThread = new(MessageReceiveLoop) { IsBackground = true };
         System.Threading.Thread sendThread = new(MessageSendLoop) { IsBackground = true };
         receiveThread.Start();

UIX/Microsoft/Iris/Debug/SystemNet/NetDebuggerServer.cs

@@ -15,7 +15,9 @@ internal class NetDebuggerServer : IDebuggerServer, IDisposable
     private readonly IFormatter _formatter;
     private Socket _socket;
     private bool _disposed = false;
-    private InterpreterCommand _uibCommand = InterpreterCommand.Continue;
+    private InterpreterCommand _uibCommand;
+
+    public event Action<IDebuggerState, object> Connected;
 
     public Uri ConnectionUri { get; }
 
@@ -130,6 +132,7 @@ internal class NetDebuggerServer : IDebuggerServer, IDisposable
             if (_disposed) return;
 
         _socket = _listener.AcceptSocket();
+        Connected?.Invoke(this, _socket);
 
         System.Threading.Thread receiveThread = new(MessageReceiveLoop) { IsBackground = true };
         System.Threading.Thread sendThread = new(MessageSendLoop) { IsBackground = true };