日期:2014-05-18  浏览次数:20870 次

.net remoting: No message was deserialized prior to calling the DispatchChannelS
Server对象
C# code
public class Server : MarshalByRefObject
{
    public string Name { get; private set; }

    public Server()
    { Name = "aaa"; }
}



服务器程序
C# code
static void Main(string[] args)
{
    //发布服务
    BinaryServerFormatterSinkProvider serverProv = new BinaryServerFormatterSinkProvider();
    serverProv.TypeFilterLevel = System.Runtime.Serialization.Formatters.TypeFilterLevel.Full;
    BinaryClientFormatterSinkProvider clientProv = new BinaryClientFormatterSinkProvider();
    IDictionary props = new Hashtable();
    props["port"] = 17017;

    var channel = new HttpChannel(props, clientProv, serverProv);

    ChannelServices.RegisterChannel(channel, false);
    RemotingConfiguration.RegisterWellKnownServiceType(typeof(Server), "server", WellKnownObjectMode.Singleton);

    Console.WriteLine("服务已开启");
    Console.ReadLine();
}


客户端程序
C# code
static void Main(string[] args)
{
    var server = (Server)Activator.GetObject(typeof(Server),
        string.Format("http://localhost:{0}/{1}", 17017,"server"));

        var dict = System.Runtime.Remoting.Channels.ChannelServices.GetChannelSinkProperties(server);
        dict["timeout"] = 50000;

    Console.WriteLine(server.Name);
    Console.ReadLine();
}


没有app.config文件。


现在我用的的是HTTP channel。先运行服务器程序,再运行客户端程序,客户端会在Console.WriteLine(server.Name)时出错。异常消息是

System.ArgumentNullException: ?????? DispatchChannelSink ???????????????????????????????????????
?????????: requestMsg
  ??? System.Runtime.Remoting.Channels.DispatchChannelSink.ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, Stream requestStream, IMessage& responseMsg, ITransportHeaders& responseHeaders, Stream& responseStream)
  ??? System.Runtime.Remoting.Channels.BinaryServerFormatterSink.ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, Stream requestStream, IMessage& responseMsg, ITransportHeaders& responseHeaders, Stream& responseStream)
  ??? System.Runtime.Remoting.Channels.Http.HttpServerTransportSink.ServiceRequest(Object state)
  ??? System.Runtime.Remoting.Channels.SocketHandler.ProcessRequestNow()


经我猜测,应该是No message was deserialized prior to calling the DispatchChannelSink. Parameter name: requestMsg。

如果改为tcp channel,即

var channel = new HttpChannel(props, clientProv, serverProv);改为TcpChannel

string.Format("http://localhost:{0}/{1}", 17017,"server"));改为tcp://

这样就不会出异常了。

但是如果用TCP,超时设置就无效。尽管http://msdn.microsoft.com/zh-cn/library/bb397839.aspx说tcp是支持timeout的,但我测试不出来。要造成超时,可以把localhost改成任意一个ip。

 
具体用TCP还是HTTP我无所谓。现在的问题是,TCP超时设置无效;HTTP有ArgumentNullException的问题。另外我不是本机通讯,所以不考虑ipx。

求各位大大帮我解决任何一个问题。。

------解决方案--------------------
HttpChannel与BinaryClientFormatterSinkProvider冲突,所以乱码了。

TcpChannel配BinaryClientFormatterSinkProvider或HttpChannel配Soap。