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Json.Net throws OutOfMemoryException only in Visual Studio

I have strange behavior that I cannot understand.

I use the WCF service to save files in a specific DB table. The WCF service has a single method that takes a JSON string as a parameter. JSON in this case is a serialized command that contains List<FileData>among other properties. The WCF service deserializes JSON and launches CommandHandlerfor this particular command.

The end user encountered an error when he tried to download a 52 MB file. WCF service returned error 404.

I was able to reproduce this in Visual Studio. After changing the configuration file in accordance with this article , 404 disappeared.

But now a new exception has appeared: although the command has been successfully serialized on the client side, WCF has successfully processed, deserialization throws OutOfMemoryException. This is the top of stacktrace:

in Newtonsoft.Json.JsonTextReader.ReadData (Boolean append, Int32 charsRequired) in Newtonsoft.Json.JsonTextReader.ReadData (Boolean append) in Newtonsoft.Json.JsonTextReader.ReadStringIntoBuffer (Char quote) in Newtonsoft.Json.JsonTextReader.ParseString (Char quote ) in Newtonsoft.Json.JsonTextReader.ParseValue () in Newtonsoft.Json.JsonTextReader.ReadInternal () in Newtonsoft.Json.JsonReader.ReadAsBytesInternal () in Newtonsoft.Json.JsonTextReader.ReadAsByerial.Json.Json.Json.Jonal.Json.Jones.jsinter ReadForType (JsonReader reader, JsonContract contract, Boolean hasConverter)

unittest, . , , , , OutOfMemoryException.

:

    [TestMethod]
    public void LoadBigFile_SerializeDeserialize_DoesntThrowOutOfMemoryException()
    {
        // Arrange
        byte[] bytes = new byte[80000000];
        Random r = new Random(23);
        r.NextBytes(bytes);

        var command = new SomeCommand(new List<FileData>
        {
            new FileData(
                fileFullName: @"D:\SomePdfFile.pdf",
                modifyDate: DateTime.MaxValue,
                data: bytes
                )
        });

        var data = JsonConvert.SerializeObject(command);

        // Act
        var deserializedCommand = 
              JsonConvert.DeserializeObject<SomeCommand>(data);

        // Assert
        Assert.AreEqual(bytes.Length, deserializedCommand.Files.First().Data.Length);
    }

, . !!! OutOfMemoryException!

: OutOfMemoryException Visual Studio, unittest VS - ? , Visual Studio, . , Debug, Release.

:

  • Json.Net 7.0.1
  • Visual Studio 2015, 2
  • WCF IIS Express , IIS
  • Windows 10 64
  • Windows 2008 R2 64
  • .Net Framework 4.5.2
+4
1

OutOfMemoryException unit test, byte[] bytes = new byte[80000000]; byte[] bytes = new byte[52000000]; (2 ). - 32 .

, IIS Express - , 32- .

| | | - | 64- IIS Express

+5

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