WebApi Wrapped JavaScriptSerializer Formatter

TypedJsonMediaTypeFormatter

public class TypedJsonMediaTypeFormatter : MediaTypeFormatter
{        
    private static readonly JavaScriptSerializer Serializer = new JavaScriptSerializer();
    
    public TypedJsonMediaTypeFormatter(MediaTypeHeaderValue mediaType)
    {        
        SupportedMediaTypes.Clear();
        SupportedMediaTypes.Add(mediaType);
    }

    ...

    public override Task<object> ReadFromStreamAsync(Type type, Stream readStream, System.Net.Http.HttpContent content, IFormatterLogger formatterLogger)
    {
        var task = Task<object>.Factory.StartNew(() =>
        {
            var sr = new StreamReader(readStream);
            var jreader = new JsonTextReader(sr);
            object val = Serializer.Deserialize(jreader.Value.ToString(), type);
            return val;
        });

        return task;
    }

    public override Task WriteToStreamAsync(Type type, object value, Stream writeStream, System.Net.Http.HttpContent content, System.Net.TransportContext transportContext)
    {
        var task = Task.Factory.StartNew(() =>
        {
            string json = Serializer.Serialize(value);
            byte[] buf = System.Text.Encoding.Default.GetBytes(json);
            writeStream.Write(buf, 0, buf.Length);
            writeStream.Flush();
        });

        return task;
    }
}