ok

src/WireMock.Net.Minimal/ResponseProviders/WebSocketResponseProvider.cs

@@ -48,7 +48,6 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
             {
                 SubProtocol = builder.AcceptProtocol,
                 KeepAliveInterval = builder.KeepAliveIntervalSeconds ?? TimeSpan.FromSeconds(WebSocketConstants.DefaultKeepAliveIntervalSeconds)
-
             };
             var webSocket = await context.WebSockets.AcceptWebSocketAsync(acceptContext).ConfigureAwait(false);
 #else
@@ -56,9 +55,7 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
 #endif
 
             // Get or create registry from options
-            var registry = builder.IsBroadcast
-                ? options.WebSocketRegistries.GetOrAdd(mapping.Guid, _ => new WebSocketConnectionRegistry())
-                : null;
+            var registry = options.WebSocketRegistries.GetOrAdd(mapping.Guid, _ => new WebSocketConnectionRegistry());
 
             // Create WebSocket context
             var wsContext = new WireMockWebSocketContext(
@@ -73,8 +70,8 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
                 guidUtils
             );
 
-            // Add to registry if broadcast is enabled
-            registry?.AddConnection(wsContext);
+            // Add to registry
+            registry.AddConnection(wsContext);
 
             try
             {
@@ -100,7 +97,7 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
             finally
             {
                 // Remove from registry
-                registry?.RemoveConnection(wsContext.ConnectionId);
+                registry.RemoveConnection(wsContext.ConnectionId);
             }
 
             // Return special marker to indicate WebSocket was handled
@@ -213,9 +210,7 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
         }
     }
 
-    private static async Task HandleCustomAsync(
-        WireMockWebSocketContext context,
-        Func<WebSocketMessage, IWebSocketContext, Task> handler)
+    private static async Task HandleCustomAsync(WireMockWebSocketContext context, Func<WebSocketMessage, IWebSocketContext, Task> handler)
     {
         var bufferSize = context.Builder.MaxMessageSize ?? WebSocketConstants.DefaultReceiveBufferSize;
         using var buffer = ArrayPool<byte>.Shared.Lease(bufferSize);
@@ -236,10 +231,7 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
 
                 try
                 {
-                    var result = await context.WebSocket.ReceiveAsync(
-                        new ArraySegment<byte>(buffer),
-                        cts.Token
-                    ).ConfigureAwait(false);
+                    var result = await context.WebSocket.ReceiveAsync(new ArraySegment<byte>(buffer), cts.Token).ConfigureAwait(false);
 
                     if (result.MessageType == WebSocketMessageType.Close)
                     {
@@ -257,10 +249,7 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
 
                         context.LogWebSocketMessage(WebSocketMessageDirection.Receive, result.MessageType, null, receiveActivity);
 
-                        await context.CloseAsync(
-                            WebSocketCloseStatus.NormalClosure,
-                            "Closed by client"
-                        ).ConfigureAwait(false);
+                        await context.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closed by client").ConfigureAwait(false);
                         break;
                     }
 
@@ -331,10 +320,7 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
         }
     }
 
-    private static async Task ForwardMessagesAsync(
-        WireMockWebSocketContext context,
-        ClientWebSocket clientWebSocket,
-        WebSocketMessageDirection direction)
+    private static async Task ForwardMessagesAsync(WireMockWebSocketContext context, ClientWebSocket clientWebSocket, WebSocketMessageDirection direction)
     {
         using var buffer = ArrayPool<byte>.Shared.Lease(WebSocketConstants.ProxyForwardBufferSize);
 

src/WireMock.Net.Minimal/Server/WireMockServer.WebSocket.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System.Net.WebSockets;
 using JetBrains.Annotations;
 using WireMock.WebSockets;
 
@@ -32,17 +31,16 @@ public partial class WireMockServer
     /// Close a specific WebSocket connection
     /// </summary>
     [PublicAPI]
-    public async Task CloseWebSocketConnectionAsync(
-        Guid connectionId,
-        WebSocketCloseStatus closeStatus = WebSocketCloseStatus.NormalClosure,
-        string statusDescription = "Closed by server",
-        CancellationToken cancellationToken = default)
+    public async Task AbortWebSocketConnectionAsync(Guid connectionId, string statusDescription = "Closed by server", CancellationToken cancellationToken = default)
     {
         foreach (var registry in _options.WebSocketRegistries.Values)
         {
-            if (registry.TryGetConnection(connectionId, out var connection) && !cancellationToken.IsCancellationRequested)
+            if (registry.TryGetConnection(connectionId, out var connection))
             {
-                await connection.CloseAsync(closeStatus, statusDescription, cancellationToken);
+                connection.Abort(statusDescription);
+                registry.RemoveConnection(connectionId);
+
+                await Task.Delay(100, cancellationToken); // Give the connection some time to close gracefully
                 return;
             }
         }
@@ -52,11 +50,11 @@ public partial class WireMockServer
     /// Broadcast a text message to all WebSocket connections in a specific mapping
     /// </summary>
     [PublicAPI]
-    public async Task BroadcastToWebSocketsAsync(Guid mappingGuid, string text, Guid? excludeConnectionId = null, CancellationToken cancellationToken = default)
+    public async Task BroadcastToWebSocketsAsync(Guid mappingGuid, string text, CancellationToken cancellationToken = default)
     {
         if (_options.WebSocketRegistries.TryGetValue(mappingGuid, out var registry))
         {
-            await registry.BroadcastAsync(text, excludeConnectionId, cancellationToken);
+            await registry.BroadcastAsync(text, null, cancellationToken);
         }
     }
 
@@ -64,11 +62,11 @@ public partial class WireMockServer
     /// Broadcast a text message to all WebSocket connections
     /// </summary>
     [PublicAPI]
-    public async Task BroadcastToAllWebSocketsAsync(string text, Guid? excludeConnectionId = null, CancellationToken cancellationToken = default)
+    public async Task BroadcastToAllWebSocketsAsync(string text, CancellationToken cancellationToken = default)
     {
         foreach (var registry in _options.WebSocketRegistries.Values)
         {
-            await registry.BroadcastAsync(text, excludeConnectionId, cancellationToken);
+            await registry.BroadcastAsync(text, null, cancellationToken);
         }
     }
 
@@ -76,11 +74,11 @@ public partial class WireMockServer
     /// Broadcast a binary message to all WebSocket connections in a specific mapping
     /// </summary>
     [PublicAPI]
-    public async Task BroadcastToWebSocketsAsync(Guid mappingGuid, byte[] bytes, Guid? excludeConnectionId = null, CancellationToken cancellationToken = default)
+    public async Task BroadcastToWebSocketsAsync(Guid mappingGuid, byte[] bytes, CancellationToken cancellationToken = default)
     {
         if (_options.WebSocketRegistries.TryGetValue(mappingGuid, out var registry))
         {
-            await registry.BroadcastAsync(bytes, excludeConnectionId, cancellationToken);
+            await registry.BroadcastAsync(bytes, null, cancellationToken);
         }
     }
 
@@ -88,11 +86,11 @@ public partial class WireMockServer
     /// Broadcast a binary message to all WebSocket connections
     /// </summary>
     [PublicAPI]
-    public async Task BroadcastToAllWebSocketsAsync(byte[] bytes, Guid? excludeConnectionId = null, CancellationToken cancellationToken = default)
+    public async Task BroadcastToAllWebSocketsAsync(byte[] bytes, CancellationToken cancellationToken = default)
     {
         foreach (var registry in _options.WebSocketRegistries.Values)
         {
-            await registry.BroadcastAsync(bytes, excludeConnectionId, cancellationToken);
+            await registry.BroadcastAsync(bytes, null, cancellationToken);
         }
     }
 }

src/WireMock.Net.Minimal/WebSockets/WebSocketBuilder.cs

@@ -13,34 +13,22 @@ internal class WebSocketBuilder(Response response) : IWebSocketBuilder
 {
     private readonly List<(IMatcher matcher, List<WebSocketMessageBuilder> messages)> _conditionalMessages = [];
 
-    /// <inheritdoc />
     public string? AcceptProtocol { get; private set; }
 
-    /// <inheritdoc />
     public bool IsEcho { get; private set; }
 
-    /// <inheritdoc />
-    public bool IsBroadcast { get; private set; }
-
-    /// <inheritdoc />
     public Func<WebSocketMessage, IWebSocketContext, Task>? MessageHandler { get; private set; }
 
-    /// <inheritdoc />
     public ProxyAndRecordSettings? ProxySettings { get; private set; }
 
-    /// <inheritdoc />
     public TimeSpan? CloseTimeout { get; private set; }
 
-    /// <inheritdoc />
     public int? MaxMessageSize { get; private set; }
 
-    /// <inheritdoc />
     public int? ReceiveBufferSize { get; private set; }
 
-    /// <inheritdoc />
     public TimeSpan? KeepAliveIntervalSeconds { get; private set; }
 
-    /// <inheritdoc />
     public IWebSocketBuilder WithAcceptProtocol(string protocol)
     {
         AcceptProtocol = Guard.NotNull(protocol);
@@ -117,12 +105,6 @@ internal class WebSocketBuilder(Response response) : IWebSocketBuilder
         return this;
     }
 
-    public IWebSocketBuilder WithBroadcast()
-    {
-        IsBroadcast = true;
-        return this;
-    }
-
     public IWebSocketBuilder WithProxy(ProxyAndRecordSettings settings)
     {
         ProxySettings = Guard.NotNull(settings);

src/WireMock.Net.Minimal/WebSockets/WebSocketConnectionRegistry.cs

@@ -3,7 +3,6 @@
 using System.Collections.Concurrent;
 using System.Diagnostics.CodeAnalysis;
 using System.Net.WebSockets;
-using static System.Net.Mime.MediaTypeNames;
 
 namespace WireMock.WebSockets;
 
@@ -27,7 +26,7 @@ internal class WebSocketConnectionRegistry
     /// </summary>
     public void RemoveConnection(Guid connectionId)
     {
-        _connections.TryRemove(connectionId, out _);
+        _ = _connections.TryRemove(connectionId, out _);
     }
 
     /// <summary>
@@ -67,6 +66,6 @@ internal class WebSocketConnectionRegistry
     private IEnumerable<WireMockWebSocketContext> Filter(Guid? excludeConnectionId)
     {
         return _connections.Values
-            .Where(c =>c.WebSocket.State == WebSocketState.Open && (!excludeConnectionId.HasValue || c.ConnectionId != excludeConnectionId));
+            .Where(c => c.WebSocket.State == WebSocketState.Open && (!excludeConnectionId.HasValue || c.ConnectionId != excludeConnectionId));
     }
 }

src/WireMock.Net.Minimal/WebSockets/WireMockWebSocketContext.cs

@@ -1,5 +1,6 @@
 // Copyright © WireMock.Net
 
+using System.Buffers;
 using System.Diagnostics;
 using System.Net.WebSockets;
 using System.Text;
@@ -33,7 +34,7 @@ public class WireMockWebSocketContext : IWebSocketContext
     /// <inheritdoc />
     public IMapping Mapping { get; }
 
-    internal WebSocketConnectionRegistry? Registry { get; }
+    internal WebSocketConnectionRegistry Registry { get; }
 
     internal WebSocketBuilder Builder { get; }
 
@@ -49,7 +50,7 @@ public class WireMockWebSocketContext : IWebSocketContext
         WebSocket webSocket,
         IRequestMessage requestMessage,
         IMapping mapping,
-        WebSocketConnectionRegistry? registry,
+        WebSocketConnectionRegistry registry,
         WebSocketBuilder builder,
         IWireMockMiddlewareOptions options,
         IWireMockMiddlewareLogger logger,
@@ -96,29 +97,31 @@ public class WireMockWebSocketContext : IWebSocketContext
     /// <inheritdoc />
     public async Task CloseAsync(WebSocketCloseStatus closeStatus, string statusDescription, CancellationToken cancellationToken = default)
     {
-        await WebSocket.CloseAsync(closeStatus, statusDescription, cancellationToken);
+        await WebSocket.CloseAsync(closeStatus, statusDescription, cancellationToken).ConfigureAwait(false);
 
         LogWebSocketMessage(WebSocketMessageDirection.Send, WebSocketMessageType.Close, $"CloseStatus: {closeStatus}, Description: {statusDescription}", null);
     }
 
+    /// <inheritdoc />
+    public void Abort(string? statusDescription = null)
+    {
+        WebSocket.Abort();
+
+        LogWebSocketMessage(WebSocketMessageDirection.Send, WebSocketMessageType.Close, $"CloseStatus: Abort, Description: {statusDescription}", null);
+    }
+
     /// <inheritdoc />
     public async Task BroadcastAsync(string text, bool excludeSender = false, CancellationToken cancellationToken = default)
     {
-        if (Registry != null)
-        {
-            Guid? excludeConnectionId = excludeSender ? ConnectionId : null;
-            await Registry.BroadcastAsync(text, excludeConnectionId, cancellationToken);
-        }
+        Guid? excludeConnectionId = excludeSender ? ConnectionId : null;
+        await Registry.BroadcastAsync(text, excludeConnectionId, cancellationToken);
     }
 
     /// <inheritdoc />
     public async Task BroadcastAsync(byte[] bytes, bool excludeSender = false, CancellationToken cancellationToken = default)
     {
-        if (Registry != null)
-        {
-            Guid? excludeConnectionId = excludeSender ? ConnectionId : null;
-            await Registry.BroadcastAsync(bytes, excludeConnectionId, cancellationToken);
-        }
+        Guid? excludeConnectionId = excludeSender ? ConnectionId : null;
+        await Registry.BroadcastAsync(bytes, excludeConnectionId, cancellationToken);
     }
 
     internal void LogWebSocketMessage(

src/WireMock.Net.Shared/WebSockets/IWebSocketBuilder.cs

@@ -64,12 +64,6 @@ public interface IWebSocketBuilder
     [PublicAPI]
     IWebSocketBuilder WithMessageHandler(Func<WebSocketMessage, IWebSocketContext, Task> handler);
 
-    /// <summary>
-    /// Enable broadcast mode for this mapping
-    /// </summary>
-    [PublicAPI]
-    IWebSocketBuilder WithBroadcast();
-
     /// <summary>
     /// Proxy to another WebSocket server
     /// </summary>

src/WireMock.Net.Shared/WebSockets/IWebSocketContext.cs

@@ -50,6 +50,11 @@ public interface IWebSocketContext
     /// </summary>
     Task CloseAsync(WebSocketCloseStatus closeStatus, string statusDescription, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// Abort the WebSocket connection to immediately close the connection without waiting for the close handshake
+    /// </summary>
+    void Abort(string? statusDescription = null);
+
     /// <summary>
     /// Broadcast text message to all connections in this mapping
     /// </summary>

test/WireMock.Net.Tests/WebSockets/WebSocketIntegrationTests.cs

@@ -400,29 +400,29 @@ public class WebSocketIntegrationTests(ITestOutputHelper output, ITestContextAcc
 
                             if (text.StartsWith("/help"))
                             {
-                                await context.SendAsync("Available commands: /help, /time, /echo <text>, /upper <text>, /reverse <text>");
+                                await context.SendAsync("Available commands: /help, /time, /echo <text>, /upper <text>, /reverse <text>", _ct);
                             }
                             else if (text.StartsWith("/time"))
                             {
-                                await context.SendAsync($"Server time: {DateTime.UtcNow:yyyy-MM-dd HH:mm:ss} UTC");
+                                await context.SendAsync($"Server time: {DateTime.UtcNow:yyyy-MM-dd HH:mm:ss} UTC", _ct);
                             }
                             else if (text.StartsWith("/echo "))
                             {
-                                await context.SendAsync(text.Substring(6));
+                                await context.SendAsync(text.Substring(6), _ct);
                             }
                             else if (text.StartsWith("/upper "))
                             {
-                                await context.SendAsync(text.Substring(7).ToUpper());
+                                await context.SendAsync(text.Substring(7).ToUpper(), _ct);
                             }
                             else if (text.StartsWith("/reverse "))
                             {
                                 var toReverse = text.Substring(9);
                                 var reversed = new string(toReverse.Reverse().ToArray());
-                                await context.SendAsync(reversed);
+                                await context.SendAsync(reversed, _ct);
                             }
                             else if (text.StartsWith("/close"))
                             {
-                                await context.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closing connection");
+                                await context.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closing connection", _ct);
                             }
                         }
                     })
@@ -800,8 +800,7 @@ public class WebSocketIntegrationTests(ITestOutputHelper output, ITestContextAcc
             )
             .RespondWith(Response.Create()
                 .WithWebSocket(ws => ws
-                    .WithCloseTimeout(TimeSpan.FromSeconds(10))
-                    .WithBroadcast()
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
                     .WithMessageHandler(async (message, context) =>
                     {
                         if (message.MessageType == WebSocketMessageType.Text)
@@ -885,8 +884,7 @@ public class WebSocketIntegrationTests(ITestOutputHelper output, ITestContextAcc
             )
             .RespondWith(Response.Create()
                 .WithWebSocket(ws => ws
-                    .WithCloseTimeout(TimeSpan.FromSeconds(10))
-                    .WithBroadcast()
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
                     .WithMessageHandler(async (message, context) =>
                     {
                         if (message.MessageType == WebSocketMessageType.Text && message.Text == "register")
@@ -962,8 +960,7 @@ public class WebSocketIntegrationTests(ITestOutputHelper output, ITestContextAcc
             )
             .RespondWith(Response.Create()
                 .WithWebSocket(ws => ws
-                    .WithBroadcast()
-                    .WithCloseTimeout(TimeSpan.FromSeconds(10))
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
                     .WithMessageHandler(async (message, context) =>
                     {
                         if (message.MessageType == WebSocketMessageType.Text)
@@ -1020,8 +1017,7 @@ public class WebSocketIntegrationTests(ITestOutputHelper output, ITestContextAcc
             )
             .RespondWith(Response.Create()
                 .WithWebSocket(ws => ws
-                    .WithBroadcast()
-                    .WithCloseTimeout(TimeSpan.FromSeconds(10))
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
                     .WithMessageHandler(async (message, context) =>
                     {
                         if (message.MessageType == WebSocketMessageType.Text)
@@ -1087,8 +1083,7 @@ public class WebSocketIntegrationTests(ITestOutputHelper output, ITestContextAcc
             )
             .RespondWith(Response.Create()
                 .WithWebSocket(ws => ws
-                    .WithCloseTimeout(TimeSpan.FromSeconds(10))
-                    .WithBroadcast()
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
                     .WithMessageHandler(async (message, context) =>
                     {
                         if (message.MessageType == WebSocketMessageType.Text)
@@ -1135,8 +1130,7 @@ public class WebSocketIntegrationTests(ITestOutputHelper output, ITestContextAcc
             )
             .RespondWith(Response.Create()
                 .WithWebSocket(ws => ws
-                    .WithCloseTimeout(TimeSpan.FromSeconds(10))
-                    .WithBroadcast()
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
                     .WithMessageHandler(async (message, context) =>
                     {
                         if (message.MessageType == WebSocketMessageType.Text)
@@ -1188,8 +1182,7 @@ public class WebSocketIntegrationTests(ITestOutputHelper output, ITestContextAcc
             )
             .RespondWith(Response.Create()
                 .WithWebSocket(ws => ws
-                    .WithCloseTimeout(TimeSpan.FromSeconds(10))
-                    .WithBroadcast()
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
                     .WithMessageHandler(async (message, context) =>
                     {
                         if (message.MessageType == WebSocketMessageType.Text)

test/WireMock.Net.Tests/WebSockets/WireMockServerWebSocketIntegrationTests.cs

@@ -0,0 +1,571 @@
+// Copyright © WireMock.Net
+
+using System.Net.WebSockets;
+using AwesomeAssertions;
+using WireMock.Net.Xunit;
+using WireMock.RequestBuilders;
+using WireMock.ResponseBuilders;
+using WireMock.Server;
+using WireMock.Settings;
+
+namespace WireMock.Net.Tests.WebSockets;
+
+public class WireMockServerWebSocketIntegrationTests(ITestOutputHelper output, ITestContextAccessor testContext)
+{
+    private readonly CancellationToken _ct = testContext.Current.CancellationToken;
+
+    [Fact]
+    public async Task GetWebSocketConnections_Should_Return_All_Active_Connections()
+    {
+        // Arrange
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/test")
+                .WithWebSocketUpgrade()
+            )
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithEcho()
+                )
+            );
+
+        using var client1 = new ClientWebSocket();
+        using var client2 = new ClientWebSocket();
+        using var client3 = new ClientWebSocket();
+
+        var uri = new Uri($"{server.Url}/ws/test");
+
+        // Act
+        await client1.ConnectAsync(uri, _ct);
+        await client2.ConnectAsync(uri, _ct);
+        await client3.ConnectAsync(uri, _ct);
+
+        // Assert
+        var connections = server.GetWebSocketConnections();
+        connections.Should().HaveCount(3);
+        connections.Should().AllSatisfy(c => c.Should().NotBeNull());
+
+        await client1.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+        await client2.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+        await client3.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+
+        await Task.Delay(300, _ct);
+    }
+
+    [Fact]
+    public async Task GetWebSocketConnections_Should_Return_Empty_When_No_Connections()
+    {
+        // Arrange
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/test")
+                .WithWebSocketUpgrade()
+            )
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithEcho()
+                )
+            );
+
+        // Act
+        var connections = server.GetWebSocketConnections();
+
+        // Assert
+        connections.Should().BeEmpty();
+    }
+
+    [Fact]
+    public async Task GetWebSocketConnections_Should_Return_Connections_For_Specific_Mapping()
+    {
+        // Arrange
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        var mapping1Guid = Guid.NewGuid();
+        var mapping2Guid = Guid.NewGuid();
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/echo1")
+                .WithWebSocketUpgrade()
+            )
+            .WithGuid(mapping1Guid)
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithEcho()
+                )
+            );
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/echo2")
+                .WithWebSocketUpgrade()
+            )
+            .WithGuid(mapping2Guid)
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithEcho()
+                )
+            );
+
+        using var client1 = new ClientWebSocket();
+        using var client2 = new ClientWebSocket();
+        using var client3 = new ClientWebSocket();
+
+        var uri1 = new Uri($"{server.Url}/ws/echo1");
+        var uri2 = new Uri($"{server.Url}/ws/echo2");
+
+        // Act
+        await client1.ConnectAsync(uri1, _ct);
+        await client2.ConnectAsync(uri1, _ct);
+        await client3.ConnectAsync(uri2, _ct);
+
+        // Assert
+        var allConnections = server.GetWebSocketConnections();
+        allConnections.Should().HaveCount(3);
+
+        var mapping1Connections = server.GetWebSocketConnections(mapping1Guid);
+        mapping1Connections.Should().HaveCount(2);
+
+        var mapping2Connections = server.GetWebSocketConnections(mapping2Guid);
+        mapping2Connections.Should().HaveCount(1);
+
+        await client1.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+        await client2.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+        await client3.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+
+        await Task.Delay(300, _ct);
+    }
+
+    [Fact]
+    public async Task AbortWebSocketConnectionAsync_Should_Close_Specific_Connection()
+    {
+        // Arrange
+        var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/test")
+                .WithWebSocketUpgrade()
+            )
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(30))
+                    .WithEcho()
+                )
+            );
+
+        using var client1 = new ClientWebSocket();
+        using var client2 = new ClientWebSocket();
+
+        var uri = new Uri($"{server.Url}/ws/test");
+
+        await client1.ConnectAsync(uri, _ct);
+        await client2.ConnectAsync(uri, _ct);
+
+        var connections = server.GetWebSocketConnections();
+        connections.Should().HaveCount(2);
+
+        var connectionIdToAbort = connections.First().ConnectionId;
+
+        // Act
+        await server.AbortWebSocketConnectionAsync(connectionIdToAbort, "Abort by test", _ct);
+
+        // Assert
+        var remainingConnections = server.GetWebSocketConnections();
+        remainingConnections.Should().HaveCount(1);
+        var remainingConnection = remainingConnections.First();
+        remainingConnection.ConnectionId.Should().NotBe(connectionIdToAbort);
+
+        await Task.Delay(200, _ct);
+    }
+
+    [Fact]
+    public async Task BroadcastToWebSocketsAsync_Should_Broadcast_Text_To_Specific_Mapping()
+    {
+        // Arrange
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        var broadcastMessage = "Server broadcast message";
+        var mappingGuid = Guid.NewGuid();
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/broadcast")
+                .WithWebSocketUpgrade()
+            )
+            .WithGuid(mappingGuid)
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithMessageHandler(async (message, context) =>
+                    {
+                        if (message.MessageType == WebSocketMessageType.Text)
+                        {
+                            var text = message.Text ?? string.Empty;
+                            if (text.StartsWith("ready"))
+                            {
+                                await context.SendAsync("ready!");
+                            }
+                        }
+                    })
+                )
+            );
+
+        using var client1 = new ClientWebSocket();
+        using var client2 = new ClientWebSocket();
+
+        var uri = new Uri($"{server.Url}/ws/broadcast");
+
+        await client1.ConnectAsync(uri, _ct);
+        await client2.ConnectAsync(uri, _ct);
+
+        // Signal ready
+        await client1.SendAsync("ready", cancellationToken: _ct);
+        await client2.SendAsync("ready", cancellationToken: _ct);
+
+        var text1 = await client1.ReceiveAsTextAsync(cancellationToken: _ct);
+        var text2 = await client2.ReceiveAsTextAsync(cancellationToken: _ct);
+
+        text1.Should().Be("ready!");
+        text2.Should().Be("ready!");
+
+        // Act
+        await server.BroadcastToWebSocketsAsync(mappingGuid, broadcastMessage, cancellationToken: _ct);
+
+        // Assert
+        var received1 = await client1.ReceiveAsTextAsync(cancellationToken: _ct);
+        var received2 = await client2.ReceiveAsTextAsync(cancellationToken: _ct);
+
+        received1.Should().Be(broadcastMessage);
+        received2.Should().Be(broadcastMessage);
+
+        await client1.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+        await client2.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+
+        await Task.Delay(200, _ct);
+    }
+
+    [Fact]
+    public async Task BroadcastToWebSocketsAsync_Should_Broadcast_Binary_To_Specific_Mapping()
+    {
+        // Arrange
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        var broadcastData = new byte[] { 0x01, 0x02, 0x03, 0x04 };
+        var mappingGuid = Guid.NewGuid();
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/broadcast-binary")
+                .WithWebSocketUpgrade()
+            )
+            .WithGuid(mappingGuid)
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithMessageHandler(async (message, context) =>
+                    {
+                        if (message.MessageType == WebSocketMessageType.Text)
+                        {
+                            var text = message.Text ?? string.Empty;
+                            if (text.StartsWith("ready"))
+                            {
+                                await context.SendAsync("ready!");
+                            }
+                        }
+                    })
+                )
+            );
+
+        using var client1 = new ClientWebSocket();
+        using var client2 = new ClientWebSocket();
+
+        var uri = new Uri($"{server.Url}/ws/broadcast-binary");
+
+        await client1.ConnectAsync(uri, _ct);
+        await client2.ConnectAsync(uri, _ct);
+
+        // Signal ready
+        await client1.SendAsync("ready", cancellationToken: _ct);
+        await client2.SendAsync("ready", cancellationToken: _ct);
+
+        var text1 = await client1.ReceiveAsTextAsync(cancellationToken: _ct);
+        var text2 = await client2.ReceiveAsTextAsync(cancellationToken: _ct);
+
+        text1.Should().Be("ready!");
+        text2.Should().Be("ready!");
+
+        // Act
+        await server.BroadcastToWebSocketsAsync(mappingGuid, broadcastData, cancellationToken: _ct);
+
+        // Assert
+        var received1 = await client1.ReceiveAsBytesAsync(cancellationToken: _ct);
+        var received2 = await client2.ReceiveAsBytesAsync(cancellationToken: _ct);
+
+        received1.Should().BeEquivalentTo(broadcastData);
+        received2.Should().BeEquivalentTo(broadcastData);
+
+        await client1.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+        await client2.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+
+        await Task.Delay(200, _ct);
+    }
+
+    [Fact]
+    public async Task BroadcastToAllWebSocketsAsync_Should_Broadcast_Text_To_All_Mappings()
+    {
+        // Arrange
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        var broadcastMessage = "Broadcast to all mappings";
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/mapping1")
+                .WithWebSocketUpgrade()
+            )
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithMessageHandler(async (message, context) =>
+                    {
+                        if (message.MessageType == WebSocketMessageType.Text)
+                        {
+                            var text = message.Text ?? string.Empty;
+                            if (text.StartsWith("ready"))
+                            {
+                                await context.SendAsync("ready!");
+                            }
+                        }
+                    })
+                )
+            );
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/mapping2")
+                .WithWebSocketUpgrade()
+            )
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithMessageHandler(async (message, context) =>
+                    {
+                        if (message.MessageType == WebSocketMessageType.Text)
+                        {
+                            var text = message.Text ?? string.Empty;
+                            if (text.StartsWith("ready"))
+                            {
+                                await context.SendAsync("ready!");
+                            }
+                        }
+                    })
+                )
+            );
+
+        using var client1 = new ClientWebSocket();
+        using var client2 = new ClientWebSocket();
+
+        var uri1 = new Uri($"{server.Url}/ws/mapping1");
+        var uri2 = new Uri($"{server.Url}/ws/mapping2");
+
+        await client1.ConnectAsync(uri1, _ct);
+        await client2.ConnectAsync(uri2, _ct);
+
+        // Signal ready
+        await client1.SendAsync("ready", cancellationToken: _ct);
+        await client2.SendAsync("ready", cancellationToken: _ct);
+
+        var text1 = await client1.ReceiveAsTextAsync(cancellationToken: _ct);
+        var text2 = await client2.ReceiveAsTextAsync(cancellationToken: _ct);
+
+        text1.Should().Be("ready!");
+        text2.Should().Be("ready!");
+
+        // Act
+        await server.BroadcastToAllWebSocketsAsync(broadcastMessage, cancellationToken: _ct);
+
+        // Assert - both clients from different mappings should receive the broadcast
+        var received1 = await client1.ReceiveAsTextAsync(cancellationToken: _ct);
+        var received2 = await client2.ReceiveAsTextAsync(cancellationToken: _ct);
+
+        received1.Should().Be(broadcastMessage);
+        received2.Should().Be(broadcastMessage);
+
+        await client1.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+        await client2.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+
+        await Task.Delay(200, _ct);
+    }
+
+    [Fact]
+    public async Task BroadcastToAllWebSocketsAsync_Should_Broadcast_Binary_To_All_Mappings()
+    {
+        // Arrange
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        var broadcastData = new byte[] { 0xAA, 0xBB, 0xCC };
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/mapping1")
+                .WithWebSocketUpgrade()
+            )
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithMessageHandler(async (message, context) =>
+                    {
+                        if (message.MessageType == WebSocketMessageType.Text)
+                        {
+                            var text = message.Text ?? string.Empty;
+                            if (text.StartsWith("ready"))
+                            {
+                                await context.SendAsync("ready!");
+                            }
+                        }
+                    })
+                )
+            );
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/mapping2")
+                .WithWebSocketUpgrade()
+            )
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithMessageHandler(async (message, context) =>
+                    {
+                        if (message.MessageType == WebSocketMessageType.Text)
+                        {
+                            var text = message.Text ?? string.Empty;
+                            if (text.StartsWith("ready"))
+                            {
+                                await context.SendAsync("ready!");
+                            }
+                        }
+                    })
+                )
+            );
+
+        using var client1 = new ClientWebSocket();
+        using var client2 = new ClientWebSocket();
+
+        var uri1 = new Uri($"{server.Url}/ws/mapping1");
+        var uri2 = new Uri($"{server.Url}/ws/mapping2");
+
+        await client1.ConnectAsync(uri1, _ct);
+        await client2.ConnectAsync(uri2, _ct);
+
+        // Signal ready
+        await client1.SendAsync("ready", cancellationToken: _ct);
+        await client2.SendAsync("ready", cancellationToken: _ct);
+
+        var text1 = await client1.ReceiveAsTextAsync(cancellationToken: _ct);
+        var text2 = await client2.ReceiveAsTextAsync(cancellationToken: _ct);
+
+        text1.Should().Be("ready!");
+        text2.Should().Be("ready!");
+
+        // Act
+        await server.BroadcastToAllWebSocketsAsync(broadcastData, cancellationToken: _ct);
+
+        // Assert
+        var received1 = await client1.ReceiveAsBytesAsync(cancellationToken: _ct);
+        var received2 = await client2.ReceiveAsBytesAsync(cancellationToken: _ct);
+
+        received1.Should().BeEquivalentTo(broadcastData);
+        received2.Should().BeEquivalentTo(broadcastData);
+
+        await client1.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+        await client2.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+
+        await Task.Delay(200, _ct);
+    }
+
+    [Fact]
+    public async Task GetWebSocketConnections_Should_Update_After_Client_Disconnect()
+    {
+        // Arrange
+        using var server = WireMockServer.Start(new WireMockServerSettings
+        {
+            Logger = new TestOutputHelperWireMockLogger(output),
+            Urls = ["ws://localhost:0"]
+        });
+
+        server
+            .Given(Request.Create()
+                .WithPath("/ws/test")
+                .WithWebSocketUpgrade()
+            )
+            .RespondWith(Response.Create()
+                .WithWebSocket(ws => ws
+                    .WithCloseTimeout(TimeSpan.FromSeconds(5))
+                    .WithEcho()
+                )
+            );
+
+        using var client1 = new ClientWebSocket();
+        using var client2 = new ClientWebSocket();
+
+        var uri = new Uri($"{server.Url}/ws/test");
+
+        await client1.ConnectAsync(uri, _ct);
+        await client2.ConnectAsync(uri, _ct);
+
+        var initialConnections = server.GetWebSocketConnections();
+        initialConnections.Should().HaveCount(2);
+
+        // Act
+        await client1.CloseAsync(WebSocketCloseStatus.NormalClosure, "Disconnect", _ct);
+        await Task.Delay(100, _ct);
+
+        // Assert
+        var remainingConnections = server.GetWebSocketConnections();
+        remainingConnections.Should().HaveCount(1);
+
+        await client2.CloseAsync(WebSocketCloseStatus.NormalClosure, "Test complete", _ct);
+
+        await Task.Delay(200, _ct);
+    }
+}