C# 具有Kerberos身份验证的WCF消息检查器错误
我有一个WCF服务主机和预配置的消息检查器,用于根据XSD模式和总体消息大小验证消息。下面是它的实现C# 具有Kerberos身份验证的WCF消息检查器错误,c#,wcf,C#,Wcf,我有一个WCF服务主机和预配置的消息检查器,用于根据XSD模式和总体消息大小验证消息。下面是它的实现 public class SimpleMessageInspector : IDispatchMessageInspector { private AsyncAPISender _messageSender = new AsyncAPISender(); private ILog logger = LogManager.GetLogger(typeof(SimpleMessage
public class SimpleMessageInspector : IDispatchMessageInspector
{
private AsyncAPISender _messageSender = new AsyncAPISender();
private ILog logger = LogManager.GetLogger(typeof(SimpleMessageInspector));
private readonly XmlSchemaSet _schemas;
// Max packet syze 50 Mb by default
private const int MaxPacketSizeByDefault = 52428800;
//Other methods of IDispatchMessageInspector
public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
{
logger.DebugFormat("Recieved SOAP message: {0}", request);
var mb = request.CreateBufferedCopy(int.MaxValue);
request = mb.CreateMessage();
var copyForValidation = mb.CreateMessage();
var copyForCheckSize = mb.CreateMessage();
ValidateMessage(ref copyForValidation);
CheckMessageSize(mb, ref copyForCheckSize);
return null;
}
void ValidateMessage(ref System.ServiceModel.Channels.Message message)
{
XmlDocument bodyDoc = new XmlDocument();
bodyDoc.Load(message.GetReaderAtBodyContents().ReadSubtree());
XmlReaderSettings settings = new XmlReaderSettings();
settings.Schemas.Add(_schemas);
settings.ValidationType = ValidationType.Schema;
XmlReader r = XmlReader.Create(new XmlNodeReader(bodyDoc), settings);
try
{
while (r.Read()) { }
}
catch (Exception e)
{
throw new ArgumentException("Error on validation by xsd schema", e);
}
}
private void CheckMessageSize(MessageBuffer buffer, ref Message message)
{
int maxPacketSize;
var maxPacketSizeFromConfig = ConfigurationManager.AppSettings["MaxPacketSize"];
if (!Int32.TryParse(maxPacketSizeFromConfig, out maxPacketSize))
{
maxPacketSize = MaxPacketSizeByDefault;
}
if (buffer.BufferSize > maxPacketSize)
{
var messageInfo = GetMessageInfoType(ref message);
if (messageInfo != null)
_messageSender.CreateResultTask(messageInfo, null, "Max message size exceeded", false);
throw new Exception("Max message size exceeded");
}
}
}
当主机接收到消息“我有一个异常”此消息无法支持操作,因为它已被读取“当主机使用Kerberos绑定与basicHttp时,它只会提示一切正常。下面是导致错误的绑定配置
<binding name="customKerberosBinding">
<security authenticationMode="Kerberos" allowInsecureTransport="true" enableUnsecuredResponse="false" requireDerivedKeys="false" protectTokens="false" requireSignatureConfirmation="false" messageSecurityVersion="WSSecurity10WSTrust13WSSecureConversation13WSSecurityPolicy12BasicSecurityProfile10"></security>
<textMessageEncoding messageVersion="Soap11"></textMessageEncoding>
<httpTransport maxReceivedMessageSize="2000000000"></httpTransport>
</binding>
有什么解释为什么只在kerberos绑定和可能的解决方案上发生吗?根据我使用
IDispatchMessageInspector
的经验,您只能读取一次消息。由于您阅读了它,并且它是通过引用传递的,我认为这就是为什么您会得到这个错误。在我的ValidateMessage方法中,在我进行验证之后,我创建了一个消息副本并返回它
object IDispatchMessageInspector.AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel, System.ServiceModel.InstanceContext instanceContext)
{
if (validateRequest)
{
if (!request.IsEmpty && !request.IsFault)
{
request = ValidateRequestMessageBody(request);
channel.Close();
channel.Dispose();
}
}
return null;
}
private Message ValidateRequestMessageBody(System.ServiceModel.Channels.Message message)
{
//do stuff
var reader = XmlReader.Create(memStream, settings);
var newMessage = Message.CreateMessage(reader, int.MaxValue, message.Version);
newMessage.Headers.Clear();
newMessage.Headers.CopyHeadersFrom(message.Headers);
return newMessage;
}
根据我使用
IDispatchMessageInspector
的经验,您只能读取一次消息。由于您阅读了它,并且它是通过引用传递的,我认为这就是为什么您会得到这个错误。在我的ValidateMessage方法中,在我进行验证之后,我创建了一个消息副本并返回它
object IDispatchMessageInspector.AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel, System.ServiceModel.InstanceContext instanceContext)
{
if (validateRequest)
{
if (!request.IsEmpty && !request.IsFault)
{
request = ValidateRequestMessageBody(request);
channel.Close();
channel.Dispose();
}
}
return null;
}
private Message ValidateRequestMessageBody(System.ServiceModel.Channels.Message message)
{
//do stuff
var reader = XmlReader.Create(memStream, settings);
var newMessage = Message.CreateMessage(reader, int.MaxValue, message.Version);
newMessage.Headers.Clear();
newMessage.Headers.CopyHeadersFrom(message.Headers);
return newMessage;
}