Added optional delay after socket connection, added callback when reconnected socket to revitalize original request, fixed proxy setting socket

CryptoExchange.Net/Clients/BaseSocketClient.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text;
 using System.Threading.Tasks;
 using CryptoExchange.Net.Authentication;
 using CryptoExchange.Net.Interfaces;
@@ -101,16 +102,10 @@ namespace CryptoExchange.Net
         /// </summary>
         public string GetSubscriptionsState()
         {
-            //var sb = new StringBuilder();
-            //sb.AppendLine($"{socketConnections.Count} connections, {CurrentSubscriptions} subscriptions, kbps: {IncomingKbps}");
-            //foreach(var connection in socketConnections)
-            //{
-            //    sb.AppendLine($"  Connection {connection.Key}: {connection.Value.SubscriptionCount} subscriptions, status: {connection.Value.Status}, authenticated: {connection.Value.Authenticated}, kbps: {connection.Value.IncomingKbps}");
-            //    foreach (var subscription in connection.Value.Subscriptions)
-            //        sb.AppendLine($"    Subscription {subscription.Id}, authenticated: {subscription.Authenticated}, confirmed: {subscription.Confirmed}");
-            //}
-            //return sb.ToString();
-            return "";
+            var result = new StringBuilder();
+            foreach(var client in ApiClients.OfType<SocketApiClient>())            
+                result.AppendLine(client.GetSubscriptionsState());            
+            return result.ToString();
         }
     }
 }

CryptoExchange.Net/Clients/SocketApiClient.cs

@@ -378,6 +378,9 @@ namespace CryptoExchange.Net
             if (!connectResult)
                 return new CallResult<bool>(connectResult.Error!);
 
+            if (Options.DelayAfterConnect != TimeSpan.Zero)
+                await Task.Delay(Options.DelayAfterConnect).ConfigureAwait(false);
+
             if (!authenticated || socket.Authenticated)
                 return new CallResult<bool>(true);
 
@@ -541,6 +544,16 @@ namespace CryptoExchange.Net
             return Task.FromResult<Uri?>(connection.ConnectionUri);
         }
 
+        /// <summary>
+        /// Update the original request to send when the connection is restored after disconnecting. Can be used to update an authentication token for example.
+        /// </summary>
+        /// <param name="request">The original request</param>
+        /// <returns></returns>
+        public virtual Task<CallResult<object>> RevitalizeRequestAsync(object request)
+        {
+            return Task.FromResult(new CallResult<object>(request));
+        }
+
         /// <summary>
         /// Gets a connection for a new subscription or query. Can be an existing if there are open position or a new one.
         /// </summary>