切换为固定32之后,挑战失败
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16-09-2019 - |
题
我有一个用于正在开发的通信库的测试套件 protobuf-net
运行还可以。所有测试通过。但是,如果我将前缀从base128更改为固定32,则选择性序列化失败。
我从 TryDeserializeWithLengthPrefix
功能是:
System.ArgumentNullException was caught
Message="Value cannot be null.\r\nParameter name: type"
Source="protobuf-net"
ParamName="type"
如果我简单地将prefixStyle.base128序列化和绝对序列化消息时,一切都可以正常工作。
有人知道会发生什么吗?
解决方案
hohum,是的,看起来像一个错误(现在记录了);可重复的示例下面。我会看看是否可以在火车上(不久)修复它。对不起。
using System;
using System.IO;
using ProtoBuf;
[ProtoContract]
public class Strange // test entity
{
[ProtoMember(1)]
public string Foo { get; set; } // test prop
[ProtoMember(2)]
public int Bar { get; set; } // test prop
static void Main() {
var original = new Strange { Foo = "abc", Bar = 123 };
// serialize and deserialize with base-128
using (MemoryStream ms = new MemoryStream()) {
Serializer.SerializeWithLengthPrefix(ms, original, PrefixStyle.Base128,1);
ms.Position = 0;
object obj;
Serializer.NonGeneric.TryDeserializeWithLengthPrefix(ms,
PrefixStyle.Base128, i => typeof(Strange),out obj);
var clone = (Strange)obj;
Console.WriteLine("Foo via Base128: " + clone.Foo); // works fine
Console.WriteLine("Bar via Base128: " + clone.Bar);
}
// serialize and deserialize with fixed-32
using (MemoryStream ms = new MemoryStream())
{
Serializer.SerializeWithLengthPrefix(ms, original, PrefixStyle.Fixed32,1);
ms.Position = 0;
object obj;
// BOOM here; oh how embarrassing
Serializer.NonGeneric.TryDeserializeWithLengthPrefix(ms,
PrefixStyle.Fixed32, i => typeof(Strange), out obj);
var clone = (Strange)obj;
Console.WriteLine("Foo via Fixed32: " + clone.Foo);
Console.WriteLine("Bar via Fixed32: " + clone.Bar);
}
}
}
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