[英].net remoting when passing an entity framework generated object
我对.net远程处理有问题(是的,这是我第一次尝试使用它,所以很抱歉,如果这是一个简单的解决方案,它是一个愚蠢的问题),我已经搜索了两天,可以吗?找不到解决我问题的方法,因此,如果我以某种方式错过答案,我会向您道歉。
我正在使用以下代码构建服务器/客户端系统:
服务器:
public Server() {
DbConnector db = new DbConnector();
BinaryServerFormatterSinkProvider provider = new BinaryServerFormatterSinkProvider();
provider.TypeFilterLevel = TypeFilterLevel.Full;
IDictionary props = new Hashtable();
props["port"] = DbConnector.PORT;
TcpChannel channel = new TcpChannel(props, null, provider);
ChannelServices.RegisterChannel(channel, true);
RemotingConfiguration.RegisterWellKnownServiceType(
typeof(DbConnector), "test",
WellKnownObjectMode.SingleCall);
}
客户:
public Form1() {
InitializeComponent();
BinaryServerFormatterSinkProvider provider = new BinaryServerFormatterSinkProvider();
provider.TypeFilterLevel = TypeFilterLevel.Full;
IDictionary props = new Hashtable();
props["port"] = 0;
props["ip"] = DbConnector.IP;
TcpChannel channel = new TcpChannel(props, null, provider);
ChannelServices.RegisterChannel(channel, true);
db = (DbConnector)Activator.GetObject(typeof(DbConnector), "tcp://188.x.x.x/test");
InitRest();
}
每当我在本地尝试使用本地主机(同时使用localhost IP和WAN IP)时,一切都可以正常工作,但是一旦在单独的计算机上尝试,客户端就会抛出异常。
{System.Net.Sockets.SocketException (0x80004005): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.0.100:9090
Server stack trace:
ved System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
ved System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
ved System.Runtime.Remoting.Channels.RemoteConnection.CreateNewSocket(EndPoint ipEndPoint)
ved System.Runtime.Remoting.Channels.RemoteConnection.CreateNewSocket()
ved System.Runtime.Remoting.Channels.RemoteConnection.GetSocket()
ved System.Runtime.Remoting.Channels.SocketCache.GetSocket(String machinePortAndSid, Boolean openNew)
ved System.Runtime.Remoting.Channels.Tcp.TcpClientTransportSink.SendRequestWithRetry(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream)
ved System.Runtime.Remoting.Channels.Tcp.TcpClientTransportSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, ITransportHeaders& responseHeaders, Stream& responseStream)
ved System.Runtime.Remoting.Channels.BinaryClientFormatterSink.SyncProcessMessage(IMessage msg)
Exception rethrown at [0]:
ved ECTunes.Database_Reader.Form1.InitRest() i d:\Dropbox\visual studio 2012\Projects\ECTunes\Database Communicator v0.2\Database Reader\Form1.cs:linje 69
ved ECTunes.Database_Reader.Form1..ctor() i d:\Dropbox\visual studio 2012\Projects\ECTunes\Database Communicator v0.2\Database Reader\Form1.cs:linje 56
ved ECTunes.Database_Reader.Program.Main() i d:\Dropbox\visual studio 2012\Projects\ECTunes\Database Communicator v0.2\Database Reader\Program.cs:linje 16
ved System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
ved System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
ved Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
ved System.Threading.ThreadHelper.ThreadStart_Context(Object state)
ved System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
ved System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
ved System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
ved System.Threading.ThreadHelper.ThreadStart()}
每当调用DbConnector的构造函数时,我都会打印出文本,我可以看到客户端与服务器联系,但我对此感到困惑。
经过更多测试后,问题似乎不在于连接本身,而是当我调用一个函数时,该函数从系统的实体框架部分返回一个生成代码的对象。 我已经用[Serializable]和:MarshalByRefObject修改了类,如下所示:
//------------------------------------------------------------------------------
// <auto-generated>
// This code was generated from a template.
//
// Manual changes to this file may cause unexpected behavior in your application.
// Manual changes to this file will be overwritten if the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
namespace Database
{
using System;
using System.Collections.Generic;
[Serializable]
public partial class customer: MarshalByRefObject
{
public customer()
{
this.car = new HashSet<car>();
}
public int customerId { get; set; }
public string name { get; set; }
public virtual ICollection<car> car { get; set; }
}
}
但是,当客户端程序调用返回“客户”对象的函数并尝试访问该对象时,客户端会抛出上述异常。
我的猜测是,由于该类是从MarshalByRefObject派生的,因此回调部分实在令人费解。
我也尝试将特定端口用于客户端通道,但无济于事。
我希望有人对此有一个解决方案,最后可能只是我缺少关键部分。
我想我找到了,这要感谢您提供的样品!
ChannelServices.RegisterChannel(channel, true);
将sureSecurity设置为false
ChannelServices.RegisterChannel(channel, false);
我确实通过为对象创建包装类并将其用于传输来解决此问题。 还有更多工作,但是可以。 显然,您不应该能够通过这些渠道发送实体框架生成的对象。
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