Added small performance improvements in SystemTextJsonMessageAccessor

2026-08-11 16:32:57 +00:00 · 2024-07-16 15:54:11 +02:00
parent a85bfb4432
commit 02432e5109
1 changed files with 10 additions and 0 deletions
@@ -242,6 +242,7 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
        {
            _stream?.Dispose();
            _stream = null;
+            _document?.Dispose();
            _document = null;
        }

@@ -261,6 +262,14 @@ namespace CryptoExchange.Net.Converters.SystemTextJson

            try
            {
+                var firstByte = data.Span[0];
+                if (firstByte != 0x7b && firstByte != 0x5b)
+                {
+                    // Value doesn't start with `{` or `[`, prevent deserialization attempt as it's slow
+                    IsJson = false;
+                    return new CallResult(new ServerError("Not a json value"));
+                }
+
                _document = JsonDocument.Parse(data);
                IsJson = true;
                return new CallResult(null);
@@ -289,6 +298,7 @@ namespace CryptoExchange.Net.Converters.SystemTextJson
        public override void Clear()
        {
            _bytes = null;
+            _document?.Dispose();
            _document = null;
        }
    }