The XML Message Validation check examines requests that contain XML messages to ensure that they are valid.If a request contains an invalid XML message, the application firewall blocks the request.That is, it must chain to a trusted root certificate authority. If not, the HTTP layer raises a Web Exception with the message "The remote server returned an error: (403) Forbidden." WCF surfaces this exception as a Message Security Exception. Offline; When using SSL over TCP or (SOAP) message security, service certificates are validated according to the Certificate Validation Mode property value of the X509Service Certificate Authentication class. Certificate Validation Mode= X509Certificate Validation Mode. When using Secure Sockets Layer (SSL) over TCP or message (SOAP) security, client certificates are validated according to the Certificate Validation Mode property value of the X509Client Certificate Authentication class. Certificate Validation Mode= X509Certificate Validation Mode. The property is set to one of the X509Certificate Validation Mode values.
Unlike using a schema for validation, a custom validator requires you to write your own custom validation code.
The following steps show you how to perform message validation using schemas: allows you to inspect and validate incoming or outgoing message parameters. IParameter Inspector interface and inserting it into the client or service run time.
You can inspect or modify the incoming or outgoing messages for a single operation on a WCF client object or WCF service by implementing the System. When performing schema validation, you will validate before deserialization because you are validating on the message itself.
Message validation allows the creation of validation logic inside the schemas, thereby providing more flexibility and reducing development time.
Schema validation occurs before serialization or encryption of the message.