diff --git a/CryptoExchange.Net/Testing/SocketSubscriptionValidator.cs b/CryptoExchange.Net/Testing/SocketSubscriptionValidator.cs
index de9f628..3549c2b 100644
--- a/CryptoExchange.Net/Testing/SocketSubscriptionValidator.cs
+++ b/CryptoExchange.Net/Testing/SocketSubscriptionValidator.cs
@@ -8,6 +8,7 @@ using System.Diagnostics;
 using System.IO;
 using System.Text;
 using System.Text.Json;
+using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -39,6 +40,135 @@ namespace CryptoExchange.Net.Testing
             _nestedPropertyForCompare = nestedPropertyForCompare;
         }
 
+        public async Task ValidateConcurrentAsync<TUpdate>(
+            Func<TClient, Action<DataEvent<TUpdate>>, Task<CallResult<UpdateSubscription>>> methodInvoke1,
+            Func<TClient, Action<DataEvent<TUpdate>>, Task<CallResult<UpdateSubscription>>> methodInvoke2,
+            string name)
+        {
+            var path = Directory.GetParent(Environment.CurrentDirectory)!.Parent!.Parent!.FullName;
+            FileStream file1;
+            try
+            {
+                file1 = File.OpenRead(Path.Combine(path, _folder, $"{name}.txt"));
+            }
+            catch (FileNotFoundException)
+            {
+                throw new Exception("Response file not found");
+            }
+
+            var buffer1 = new byte[file1.Length];
+            await file1.ReadAsync(buffer1, 0, (int)file1.Length).ConfigureAwait(false);
+            file1.Close();
+
+            var data1 = Encoding.UTF8.GetString(buffer1);
+            using var reader1 = new StringReader(data1);
+
+            var socket = TestHelpers.ConfigureSocketClient(_client, _baseAddress);
+
+            string? lastMessage1 = null;
+            string? lastMessage2 = null;
+            bool turn = false;
+            socket.OnMessageSend += (x) =>
+            {
+                if (turn)
+                    lastMessage1 = x;
+                else
+                    lastMessage2 = x;
+
+                turn = !turn;
+            };
+
+            int updates1 = 0;
+            int updates2 = 0;
+            Task<CallResult<UpdateSubscription>> task1;
+            Task<CallResult<UpdateSubscription>> task2;
+            // Invoke subscription method
+            try
+            {
+                task1 = methodInvoke1(_client, x => { updates1++; });
+                task2 = methodInvoke2(_client, x => { updates2++; });
+            }
+            catch (Exception)
+            {
+                throw;
+            }
+
+            string? message1 = null;
+            string? message2 = null;
+
+            while (true)
+            {
+                var line1 = reader1.ReadLine();
+                if (line1 == null)
+                    break;
+
+                if (line1.StartsWith(">"))
+                {
+                    // Expect a message from client to server
+                    if (line1[1] == '1')
+                        message1 = line1.Substring(3);
+                    else
+                        message2 = line1.Substring(3);
+
+                    await Task.Delay(100).ConfigureAwait(false);
+                }
+                else if (line1.StartsWith("<"))
+                {
+                    var line = line1.Substring(3);
+                    var matches = Regex.Matches(line, "(\\|.+\\|)");
+                    if (matches.Count > 0)
+                    {
+                        var match = matches[0];
+                        var prevMessage = line1[1] == '1' ? lastMessage1 : lastMessage2;
+                        var json = JsonDocument.Parse(prevMessage);
+                        var propName = match.Value.Substring(1, match.Value.Length - 2);
+                        var split = propName.Split('.');
+                        var jsonProp = json.RootElement;
+                        foreach (var x in split)                        
+                            jsonProp = jsonProp.GetProperty(x);                        
+
+                        var value = jsonProp.ValueKind == JsonValueKind.String ? jsonProp.GetString() : jsonProp.GetInt32().ToString();
+                        line = line.Replace(match.Value, value);
+                    }
+
+                    socket.InvokeMessage(line);
+                }
+                else if (line1.StartsWith("="))
+                {
+                    var line = line1.Substring(3);
+                    var matches = Regex.Matches(line, "(\\|.+\\|)");
+                    if (matches.Count > 0)
+                    {
+                        var match = matches[0];
+                        var prevMessage = line1[1] == '1' ? lastMessage1 : lastMessage2;
+                        var json = JsonDocument.Parse(prevMessage);
+                        var propName = match.Value.Substring(1, match.Value.Length - 2);
+                        var split = propName.Split('.');
+                        var jsonProp = json.RootElement;
+                        foreach (var x in split)
+                            jsonProp = jsonProp.GetProperty(x);
+
+                        var value = jsonProp.ValueKind == JsonValueKind.String ? jsonProp.GetString() : jsonProp.GetInt32().ToString();
+                        line = line.Replace(match.Value, value);
+                    }
+
+                    socket.InvokeMessage(line);
+                }
+            }
+
+            var res = await Task.WhenAll(task1, task2).ConfigureAwait(false);
+            if (!res[0])
+                throw new Exception("Subscribe failed: " + res[0].Error!.ToString());
+            if (!res[1])
+                throw new Exception("Subscribe failed: " + res[1].Error!.ToString());
+
+            if (updates1 != 1 || updates2 != 1)
+                throw new Exception($"Expected 1 update for both subscriptions, instead got {updates1} and {updates2}");
+
+            //await _client.UnsubscribeAllAsync().ConfigureAwait(false);
+        }
+
+
         /// <summary>
         /// Validate a subscription
         /// </summary>