我有客户端和服务器端应用程序的项目。当然，他们交换数据。我正在测试大型对象（大约 5 mb）的数据流并遇到一个问题：有时 BinaryFormatter Deserialize() 抛出此异常：
二进制流“0”不包含有效的 BinaryHeader。可能的原因是无效的流或序列化和反序列化之间的对象版本更改。---（不一定是流 '0'，但也可能是其他索引）。我检查了数据的大小（发送端和接收端），它们是相同的，但内容（字节的平均顺序与发送的数据包不同）。代码如下：
public static ICommand Deserialize(byte[] bytes)
{
BinaryFormatter frmt=new BinaryFormatter();
frmt.AssemblyFormat = FormatterAssemblyStyle.Simple;
frmt.Binder=new BindingType();
using (MemoryStream ms = new MemoryStream(bytes))
{
ms.Seek(0, SeekOrigin.Begin);
return (ICommand)frmt.Deserialize(ms);
}
}
private class BindingType:SerializationBinder//for deserializeing object in assembly, different from where serialized
{
public override Type BindToType(string assemblyName, string typeName)
{
Type toDeserialize = null;
String exeAssembly = Assembly.GetExecutingAssembly().FullName;
if (typeName == "Server.ServerPlayer")
typeName = "Command_Entities.Player";
if (typeName == "Server.ServerLobby")
typeName = "Command_Entities.Lobby";
// The following line of code returns the type.
toDeserialize = Type.GetType(String.Format("{0}, {1}",typeName, exeAssembly));//change assembly name and type accordingly to object being deserialized
//to match current assembly name
return toDeserialize;
}
}
这是我的接收逻辑：
private void AsyncReceiveLoop(object obj)
{
byte[] metaData = new byte[4];
byte[] data = null;
int received = 0;
try
{
while (!_stop)
{
_me.Receive(metaData, 0, 4, SocketFlags.None);
_packetSize =Convert.ToInt32( BitConverter.ToUInt32(metaData, 0));
data = CorrectReceiver.Receive(_me, _packetSize).ToArray();
if (_packetSize == data.Length)
{
_mainCallback(data);
}
}
}
catch (SocketException ex)
{
_ecxeptionCallback(ex);
}
}
而这个（正确接收者）：
public static byte[] Receive(Socket soc, int packetSize)
{
NetworkStream ns=new NetworkStream(soc,false);
List<byte> totalBytes=new List<byte>();
int receivedTotal = 0;
byte[] tempBytes=null;
int size = 0;
int received = 0;
int available = 0;
byte[] rec = null;
tempBytes = new byte[packetSize];
while (packetSize > receivedTotal)
{
if (ns.DataAvailable)
{
received=ns.Read(tempBytes, receivedTotal, packetSize-receivedTotal);
if(received==0)
throw new Exception("Connection closed...");//connection closed when 0 bytes received
receivedTotal += received;
}
else{ System.Threading.Thread.Sleep(50);}
}
return tempBytes;
}
您可能会在这里找到一些不必要或愚蠢的解决方案，但是这个问题持续了很长时间，并且我对代码和逻辑进行了许多更改。因此，如果你们中的任何人在这里看到了一些东西，那可能是问题的原因，或者如果有人过去遇到过这个问题，请帮助我找到错误。