Added CallResult.SuccessResult as static object for use instead of new CallResult(null)

CryptoExchange.Net/Clients/RestApiClient.cs

@@ -341,7 +341,7 @@ namespace CryptoExchange.Net.Clients
                 }
             }
 
-            return new CallResult(null);
+            return CallResult.SuccessResult;
         }
 
         /// <summary>

CryptoExchange.Net/Clients/SocketApiClient.cs

@@ -377,7 +377,7 @@ namespace CryptoExchange.Net.Clients
         protected virtual async Task<CallResult> ConnectIfNeededAsync(SocketConnection socket, bool authenticated)
         {
             if (socket.Connected)
-                return new CallResult(null);
+                return CallResult.SuccessResult;
 
             var connectResult = await ConnectSocketAsync(socket).ConfigureAwait(false);
             if (!connectResult)
@@ -387,7 +387,7 @@ namespace CryptoExchange.Net.Clients
                 await Task.Delay(ClientOptions.DelayAfterConnect).ConfigureAwait(false);
 
             if (!authenticated || socket.Authenticated)
-                return new CallResult(null);
+                return CallResult.SuccessResult;
 
             var result = await AuthenticateSocketAsync(socket).ConfigureAwait(false);
             if (!result)
@@ -426,7 +426,7 @@ namespace CryptoExchange.Net.Clients
             }
 
             socket.Authenticated = true;
-            return new CallResult(null);
+            return CallResult.SuccessResult;
         }
 
         /// <summary>
@@ -474,7 +474,7 @@ namespace CryptoExchange.Net.Clients
         /// <returns></returns>
         protected internal virtual Task<CallResult> RevitalizeRequestAsync(Subscription subscription)
         {
-            return Task.FromResult(new CallResult(null));
+            return Task.FromResult(CallResult.SuccessResult);
         }
 
         /// <summary>
@@ -711,7 +711,7 @@ namespace CryptoExchange.Net.Clients
                     return new CallResult(connectResult.Error!);
             }
 
-            return new CallResult(null);
+            return CallResult.SuccessResult;
         }
 
         /// <inheritdoc />

CryptoExchange.Net/Converters/SystemTextJson/SystemTextJsonMessageAccessor.cs

@@ -276,7 +276,7 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
             {
                 _document = await JsonDocument.ParseAsync(_stream ?? stream).ConfigureAwait(false);
                 IsJson = true;
-                return new CallResult(null);
+                return CallResult.SuccessResult;
             }
             catch (Exception ex)
             {
@@ -339,7 +339,7 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
 
                 _document = JsonDocument.Parse(data);
                 IsJson = true;
-                return new CallResult(null);
+                return CallResult.SuccessResult;
             }
             catch (Exception ex)
             {

CryptoExchange.Net/Objects/CallResult.cs

@@ -13,6 +13,11 @@ namespace CryptoExchange.Net.Objects
     /// </summary>
     public class CallResult
     {
+        /// <summary>
+        /// Static success result
+        /// </summary>
+        public static CallResult SuccessResult { get; } = new CallResult(null);
+
         /// <summary>
         /// An error if the call didn't succeed, will always be filled if Success = false
         /// </summary>
@@ -149,7 +154,7 @@ namespace CryptoExchange.Net.Objects
         /// <returns></returns>
         public CallResult AsDataless()
         {
-            return new CallResult(null);
+            return SuccessResult;
         }
 
         /// <summary>

CryptoExchange.Net/RateLimiting/RateLimitGate.cs

@@ -146,7 +146,7 @@ namespace CryptoExchange.Net.RateLimiting
                 }
             }
 
-            return new CallResult(null);
+            return CallResult.SuccessResult;
         }
 
         /// <inheritdoc />

CryptoExchange.Net/Sockets/CryptoExchangeWebSocketClient.cs

@@ -263,7 +263,7 @@ namespace CryptoExchange.Net.Sockets
             }
 
             _logger.SocketConnected(Id, Uri);
-            return new CallResult(null);
+            return CallResult.SuccessResult;
         }
 
         /// <inheritdoc />

CryptoExchange.Net/Sockets/Query.cs

@@ -184,7 +184,7 @@ namespace CryptoExchange.Net.Sockets
         {
             var typedMessage = message.As((TServerResponse)message.Data);
             if (!ValidateMessage(typedMessage))
-                return new CallResult(null);
+                return CallResult.SuccessResult;
 
             CurrentResponses++;
             if (CurrentResponses == RequiredResponses)

CryptoExchange.Net/Sockets/SocketConnection.cs

@@ -856,7 +856,7 @@ namespace CryptoExchange.Net.Sockets
                 if (!_socket.Send(requestId, data, weight))
                     return new CallResult(new WebError("Failed to send message, connection not open"));
 
-                return new CallResult(null);
+                return CallResult.SuccessResult;
             }
             catch(Exception ex)
             {
@@ -879,7 +879,7 @@ namespace CryptoExchange.Net.Sockets
                     // No need to resubscribe anything
                     _logger.NothingToResubscribeCloseConnection(SocketId);
                     _ = _socket.CloseAsync();
-                    return new CallResult(null);
+                    return CallResult.SuccessResult;
                 }
             }
 
@@ -966,7 +966,7 @@ namespace CryptoExchange.Net.Sockets
                 return new CallResult(new WebError("Socket not connected"));
 
             _logger.AllSubscriptionResubscribed(SocketId);
-            return new CallResult(null);
+            return CallResult.SuccessResult;
         }
 
         internal async Task UnsubscribeAsync(Subscription subscription)
@@ -986,7 +986,7 @@ namespace CryptoExchange.Net.Sockets
 
             var subQuery = subscription.GetSubQuery(this);
             if (subQuery == null)
-                return new CallResult(null);
+                return CallResult.SuccessResult;
 
             var result = await SendAndWaitQueryAsync(subQuery).ConfigureAwait(false);
             subscription.HandleSubQueryResponse(subQuery.Response!);

CryptoExchange.Net/Trackers/Klines/KlineTracker.cs

@@ -190,7 +190,7 @@ namespace CryptoExchange.Net.Trackers.Klines
             _updateSubscription.ConnectionRestored += HandleConnectionRestored;
             Status = SyncStatus.Synced;
             _logger.KlineTrackerStarted(SymbolName);
-            return new CallResult(null);
+            return CallResult.SuccessResult;
         }
 
         /// <inheritdoc />

CryptoExchange.Net/Trackers/Trades/TradeTracker.cs

@@ -213,7 +213,7 @@ namespace CryptoExchange.Net.Trackers.Trades
             _updateSubscription.ConnectionRestored += HandleConnectionRestored;
             SetSyncStatus();
             _logger.TradeTrackerStarted(SymbolName);
-            return new CallResult(null);
+            return CallResult.SuccessResult;
         }
 
         /// <inheritdoc />