Question

我有一个自托管WCF服务的应用程序（允许其他应用程序试用该应用程序）。

该服务在我们所有的测试计算机（Windows 7，Windows XP）上运行良好，但我们的一位客户（在Windows XP上）刚刚打电话给我们报告了发布时的异常。

通过我们的软件跟踪，我们发现了以下内容：

似乎当我们进行ServiceHost.Open调用时，我们会遇到以下异常：

System.Net.Sockets.SocketException (0x80004005): The requested address is not valid in its context
   at System.Net.Sockets.Socket.DoBind(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.Sockets.Socket.Bind(EndPoint localEP)
   at System.ServiceModel.Channels.UdpUtility.BindSocket(Socket socket, IPEndPoint localEndpoint)
   at System.ServiceModel.Channels.UdpUtility.CreateListenSocket(IPAddress ipAddress, Int32& port, Int32 receiveBufferSize, Int32 timeToLive, Int32 interfaceIndex, Boolean allowMulticastLoopback, Boolean isLoopbackAdapter)
   at System.ServiceModel.Channels.UdpChannelListener.InitSockets(Boolean updateListenPort)
   at System.ServiceModel.Channels.UdpChannelListener..ctor(IUdpTransportSettings settings, BindingContext context)
   at System.ServiceModel.Channels.UdpTransportBindingElement.BuildChannelListener[TChannel](BindingContext context)
   at System.ServiceModel.Channels.BindingContext.BuildInnerChannelListener[TChannel]()
   at System.ServiceModel.Channels.MessageEncodingBindingElement.InternalBuildChannelListener[TChannel](BindingContext context)
   at System.ServiceModel.Channels.TextMessageEncodingBindingElement.BuildChannelListener[TChannel](BindingContext context)
   at System.ServiceModel.Channels.BindingContext.BuildInnerChannelListener[TChannel]()
   at System.ServiceModel.Channels.Binding.BuildChannelListener[TChannel](Uri listenUriBaseAddress, String listenUriRelativeAddress, ListenUriMode listenUriMode, BindingParameterCollection parameters)
   at System.ServiceModel.Description.DispatcherBuilder.MaybeCreateListener(Boolean actuallyCreate, Type[] supportedChannels, Binding binding, BindingParameterCollection parameters, Uri listenUriBaseAddress, String listenUriRelativeAddress, ListenUriMode listenUriMode, ServiceThrottle throttle, IChannelListener& result, Boolean supportContextSession)
   at System.ServiceModel.Description.DispatcherBuilder.BuildChannelListener(StuffPerListenUriInfo stuff, ServiceHostBase serviceHost, Uri listenUri, ListenUriMode listenUriMode, Boolean supportContextSession, IChannelListener& result)
   at System.ServiceModel.Description.DispatcherBuilder.InitializeServiceHost(ServiceDescription description, ServiceHostBase serviceHost)
   at System.ServiceModel.ServiceHostBase.InitializeRuntime()
   at System.ServiceModel.ServiceHostBase.OnBeginOpen()
   at System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

我看了一下这个错误，看起来它可能与提供的错误IP有关。

首先，以下是我们如何创建服务：

m_host = new ServiceHost(m_ourServiceInstance);
NetNamedPipeBinding namedPipeBinding = new NetNamedPipeBinding(NetNamedPipeSecurityMode.None);
namedPipeBinding.Security.Transport.ProtectionLevel = ProtectionLevel.EncryptAndSign;
SetBindingDefaultTimeouts(namedPipeBinding);
String url = String.Format("net.pipe://localhost/ServiceName_{0}", Process.GetCurrentProcess().Id);
m_host.AddServiceEndpoint(typeof(IOurServiceType), namedPipeBinding, url);
m_host.Description.Behaviors.Add(new ServiceDiscoveryBehavior());
m_host.AddServiceEndpoint(new UdpDiscoveryEndpoint());
m_host.Open();//Crash on this line !!!

对我来说有几个谜团：

为什么这会为本地NamedPipe使用套接字？
这里不同的电脑之间可以有什么变化？除了进程ID我没看到？
我可以做些什么来调查更多？我在这里有点迷失。

非常感谢

Answer 1

为什么这会将socket用于本地NamedPipe？

因为你在这里有UdpDiscoveryEndpoint：

m_host.AddServiceEndpoint(new UdpDiscoveryEndpoint());

这里的不同电脑之间可以有什么变化？除了进程ID我没看到？

尝试以其访问权限禁止的方式访问套接字。
您已经拥有相同的合格地址（可能来自之前的流程未正确处理它的非托管资源。或者尚未关闭）了解更多信息：MSDN

使用命名管道启动服务主机时出现异常

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