WCF 服务（服务器）在一段时间内运行良好，但它意外崩溃并出现异常，此异常记录在AppDomain.CurrentDomain.UnhandledException中：
System.ServiceModel.CommunicationObjectFaultedException: The communication object, System.ServiceModel.Channels.SecurityChannelListener`1+SecurityReplySessionChannel[System.ServiceModel.Channels.IReplySessionChannel], cannot be used for communication because it is in the Faulted state.
at System.ServiceModel.Channels.CommunicationObject.ThrowIfFaulted()
at System.ServiceModel.Channels.SecurityChannelListener`1.ReceiveItemAndVerifySecurityAsyncResult`2.StartInnerReceive()
at System.ServiceModel.Channels.SecurityChannelListener`1.ReceiveItemAndVerifySecurityAsyncResult`2.OnFaultSent()
at System.ServiceModel.Channels.SecurityChannelListener`1.ReceiveItemAndVerifySecurityAsyncResult`2.OnInnerReceiveDone()
at System.ServiceModel.Channels.SecurityChannelListener`1.ReceiveItemAndVerifySecurityAsyncResult`2.StartInnerReceive()
at System.ServiceModel.Channels.SecurityChannelListener`1.ReceiveItemAndVerifySecurityAsyncResult`2.Start()
at System.ServiceModel.Channels.SecurityChannelListener`1.ReceiveRequestAndVerifySecurityAsyncResult.ReceiveMessage(Object state)
at System.Runtime.IOThreadScheduler.ScheduledOverlapped.IOCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Runtime.Fx.IOCompletionThunk.UnhandledExceptionFrame(UInt32 error, UInt32 bytesRead, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
没有xml配置，一切都是在运行时配置的。服务上下文是单一的，并发是多重的。
我们已禁用重放检测。我们的用户在他们的 PC 上设置了错误的日期时间时遇到了很多问题，因此我们被迫“禁用”时间偏差。Net.Tcp 绑定用于通信，我们使用回调。
使用自定义错误处理程序，HandleError 总是返回 false。
当前解决方案：服务设置为崩溃后自动重启，但这并不令人满意。
配置（用值替换常量变量）：
Uri tcpBaseAddress = new Uri(String.Format("net.tcp://localhost:{0}", MyMwcNetworkingConstants.NETWORKING_PORT_MASTER_SERVER_NEW));
// create the net.tcp binding for the service endpoint
NetTcpBinding ntcBinding = new NetTcpBinding();
ntcBinding.Security.Mode = SecurityMode.None;
ntcBinding.MaxBufferPoolSize = 1024*1024;
ntcBinding.MaxBufferSize = 10*1024;
ntcBinding.MaxConnections = 500;
ntcBinding.ListenBacklog = 500;
ntcBinding.MaxReceivedMessageSize = 10*1024;
ntcBinding.ReaderQuotas.MaxArrayLength = 10*1024;
ntcBinding.ReaderQuotas.MaxBytesPerRead = 10*1024;
ntcBinding.SendTimeout = 90s;
ntcBinding.ReceiveTimeout = 90s;
ntcBinding.Security.Mode = SecurityMode.Message;
ntcBinding.Security.Message.ClientCredentialType = MessageCredentialType.UserName;
ntcBinding.Security.Transport.ClientCredentialType = TcpClientCredentialType.None;
ntcBinding.Security.Transport.ProtectionLevel = System.Net.Security.ProtectionLevel.None;
m_host = new System.ServiceModel.ServiceHost(Service, tcpBaseAddress);
m_host.Credentials.UserNameAuthentication.CustomUserNamePasswordValidator = new MyUserValidator();
m_host.Credentials.UserNameAuthentication.UserNamePasswordValidationMode = System.ServiceModel.Security.UserNamePasswordValidationMode.Custom;
m_host.Credentials.ServiceCertificate.Certificate = new System.Security.Cryptography.X509Certificates.X509Certificate2(MyMasterConstants.MASTER_CERTIFICATE, string.Empty);
m_host.Credentials.ClientCertificate.Authentication.CustomCertificateValidator = new MyCertificateValidator(String.Empty);
m_host.Credentials.ClientCertificate.Authentication.CertificateValidationMode = System.ServiceModel.Security.X509CertificateValidationMode.None;
var endpoint = m_host.AddServiceEndpoint(typeof(IMyMasterService), MyCustomBinding.DecorateBinding(ntcBinding, MyMasterConstants.WCF_MAX_CLIENT_COUNT), tcpBaseAddress);
m_host.Open();
这是我的自定义绑定：
public static class MyCustomBinding
{
public static Binding DecorateBinding(Binding binding, int? maxNegotiationCount)
{
CustomBinding customBinding = new CustomBinding(binding);
SymmetricSecurityBindingElement security = customBinding.Elements.Find<SymmetricSecurityBindingElement>();
if (security != null)
{
security.IncludeTimestamp = false;
security.LocalClientSettings.DetectReplays = false;
security.LocalServiceSettings.DetectReplays = false;
security.LocalClientSettings.MaxClockSkew = TimeSpan.MaxValue;
security.LocalServiceSettings.MaxClockSkew = TimeSpan.MaxValue;
security.LocalClientSettings.SessionKeyRenewalInterval = TimeSpan.MaxValue;
security.LocalServiceSettings.SessionKeyRenewalInterval = TimeSpan.FromMilliseconds(Int32.MaxValue);
if (maxNegotiationCount.HasValue)
{
security.LocalServiceSettings.MaxPendingSessions = maxNegotiationCount.Value;
security.LocalServiceSettings.MaxStatefulNegotiations = maxNegotiationCount.Value;
}
// Get the System.ServiceModel.Security.Tokens.SecureConversationSecurityTokenParameters
SecureConversationSecurityTokenParameters secureTokenParams = (SecureConversationSecurityTokenParameters)security.ProtectionTokenParameters;
// From the collection, get the bootstrap element.
SecurityBindingElement bootstrap = secureTokenParams.BootstrapSecurityBindingElement;
// Set the MaxClockSkew on the bootstrap element.
bootstrap.IncludeTimestamp = false;
bootstrap.LocalClientSettings.DetectReplays = false;
bootstrap.LocalServiceSettings.DetectReplays = false;
bootstrap.LocalClientSettings.MaxClockSkew = TimeSpan.MaxValue;
bootstrap.LocalServiceSettings.MaxClockSkew = TimeSpan.MaxValue;
bootstrap.LocalClientSettings.SessionKeyRenewalInterval = TimeSpan.MaxValue;
bootstrap.LocalServiceSettings.SessionKeyRenewalInterval = TimeSpan.FromMilliseconds(Int32.MaxValue);
if (maxNegotiationCount.HasValue)
{
bootstrap.LocalServiceSettings.MaxPendingSessions = maxNegotiationCount.Value;
bootstrap.LocalServiceSettings.MaxStatefulNegotiations = maxNegotiationCount.Value;
}
return customBinding;
}
else
{
return binding;
}
}
public static Binding DecorateBinding(Binding binding)
{
return DecorateBinding(binding, null);
}
}