Mono HttpWebRequest发布数据不完整

Question

我将数据从MonoTouch客户端发布到我的Asp.Net MVC控制器。但是，有时我会出现以下错误：

   System.ArgumentException: Unterminated string passed in. (49152):
    .....LONG JSON STRING WHICH IS MISSING THE END **" }** and possible other characters.
     at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeString()
       at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)
       at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeDictionary(Int32 depth)
       at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)
       at System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer)
       at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)
       at System.Web.Mvc.JsonValueProviderFactory.GetValueProvider(ControllerContext controllerContext)
       at System.Web.Mvc.ValueProviderFactoryCollection.<>c__DisplayClassc.<GetValueProvider>b__7(ValueProviderFactory factory)
       at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
       at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
       at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
       at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
       at System.Web.Mvc.ValueProviderFactoryCollection.GetValueProvider(ControllerContext controllerContext)
       at System.Web.Mvc.ControllerBase.get_ValueProvider()
       at System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor)
       at System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
       at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)

我想知道是否有任何情况下Mono中的HttpWebRequest对象会切断请求daya而不是全部发布？

Mono中的代码是HttpRequest.BeginGetResponse（），这是一个异步操作。