SoapMessage Class

Reference

Definition

Namespace:: System.Web.Services.Protocols

Assembly:: System.Web.Services.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Represents the data in a SOAP request or SOAP response at a specific SoapMessageStage.

public ref class SoapMessage abstract

public abstract class SoapMessage

type SoapMessage = class

Public MustInherit Class SoapMessage

Inheritance: Object
SoapMessage

Derived: System.Web.Services.Protocols.SoapClientMessage

System.Web.Services.Protocols.SoapServerMessage

Examples

// Process the SOAP message received and write to log file.
virtual void ProcessMessage( SoapMessage^ message ) override
{
   switch ( message->Stage )
   {
      case SoapMessageStage::BeforeSerialize:
         WriteOutputBeforeSerialize( message );
         break;
      case SoapMessageStage::AfterSerialize:
         WriteOutputAfterSerialize( message );
         break;
      case SoapMessageStage::BeforeDeserialize:
         WriteInputBeforeDeserialize( message );
         break;
      case SoapMessageStage::AfterDeserialize:
         WriteInputAfterDeserialize( message );
         break;
      default:
         throw gcnew Exception( "invalid stage" );
   }
}

// Write the contents of the outgoing SOAP message to the log file.
void WriteOutputBeforeSerialize( SoapMessage^ message )
{
   FileStream^ myFileStream =
      gcnew FileStream( filename, FileMode::Append, FileAccess::Write );
   StreamWriter^ myStreamWriter = gcnew StreamWriter( myFileStream );
   myStreamWriter->WriteLine( "================================== Request at {0}",
      DateTime::Now );
   
   myStreamWriter->WriteLine(
      "The method that has been invoked is: " );
   myStreamWriter->WriteLine( "\t{0}", message->MethodInfo );

   myStreamWriter->WriteLine( "The contents of the SOAPAction HTTP header is:" );
   myStreamWriter->WriteLine( "\t{0}", message->Action );

   myStreamWriter->WriteLine( "The contents of HTTP Content-type header is:" );
   myStreamWriter->WriteLine( "\t{0}", message->ContentType );

   if ( message->OneWay )
   {
      myStreamWriter->WriteLine(
         "The method invoked on the client shall not wait"
         + " till the server finishes" );
   }
   else
   {
      myStreamWriter->WriteLine(
         "The method invoked on the client shall wait"
         + " till the server finishes" );
   }

   myStreamWriter->WriteLine(
      "The site where the XML Web service is available is:" );
   myStreamWriter->WriteLine( "\t{0}", message->Url );

   myStreamWriter->WriteLine( "The values of the in parameters are:" );
   myStreamWriter->WriteLine(
      "Value of first in parameter: {0}", message->GetInParameterValue( 0 ) );
   myStreamWriter->WriteLine(
      "Value of second in parameter: {0}", message->GetInParameterValue( 1 ) );

   myStreamWriter->WriteLine();
   myStreamWriter->Flush();
   myStreamWriter->Close();
   myFileStream->Close();
}

// Write the contents of the incoming SOAP message to the log file.
void WriteInputAfterDeserialize( SoapMessage^ message )
{
   FileStream^ myFileStream =
      gcnew FileStream( filename, FileMode::Append, FileAccess::Write );
   StreamWriter^ myStreamWriter = gcnew StreamWriter( myFileStream );
   myStreamWriter->WriteLine();
   
   myStreamWriter->WriteLine( "The values of the out parameter are:" );
   myStreamWriter->WriteLine(
      "The value of the out parameter is: {0}", message->GetOutParameterValue( 0 ) );

   myStreamWriter->WriteLine( "The values of the return parameter are:" );
   myStreamWriter->WriteLine(
      "The value of the return parameter is: {0}", message->GetReturnValue() );

   myStreamWriter->Flush();
   myStreamWriter->Close();
   myFileStream->Close();
}

// Process the SOAP message received and write to log file.
public override void ProcessMessage(SoapMessage message)
{
   switch (message.Stage)
   {
      case SoapMessageStage.BeforeSerialize:
         WriteOutputBeforeSerialize(message);
         break;
      case SoapMessageStage.AfterSerialize:
         WriteOutputAfterSerialize(message);
         break;
      case SoapMessageStage.BeforeDeserialize:
         WriteInputBeforeDeserialize(message);
         break;
      case SoapMessageStage.AfterDeserialize:
         WriteInputAfterDeserialize(message);
         break;
      default:
         throw new Exception("invalid stage");
   }
}

// Write the contents of the outgoing SOAP message to the log file.
public void WriteOutputBeforeSerialize(SoapMessage message)
{
   FileStream myFileStream =
      new FileStream(filename, FileMode.Append, FileAccess.Write);
   StreamWriter myStreamWriter = new StreamWriter(myFileStream);
   myStreamWriter.WriteLine("================================== Request at "
      + DateTime.Now);
   myStreamWriter.WriteLine("The method that has been invoked is: ");
   myStreamWriter.WriteLine("\t" + message.MethodInfo);
   myStreamWriter.WriteLine(
      "The contents of the SOAPAction HTTP header is:");
   myStreamWriter.WriteLine("\t" + message.Action);
   myStreamWriter.WriteLine("The contents of HTTP Content-type header is:");
   myStreamWriter.WriteLine("\t" + message.ContentType);
   if(message.OneWay)
      myStreamWriter.WriteLine(
         "The method invoked on the client shall not wait"
         + " till the server finishes");
   else
      myStreamWriter.WriteLine(
         "The method invoked on the client shall wait"
         + " till the server finishes");
   myStreamWriter.WriteLine(
      "The site where the XML Web service is available is:");
   myStreamWriter.WriteLine("\t" + message.Url);
   myStreamWriter.WriteLine("The values of the in parameters are:");
   myStreamWriter.WriteLine("Value of first in parameter: {0}",
      message.GetInParameterValue(0));
   myStreamWriter.WriteLine("Value of second in parameter: {0}",
      message.GetInParameterValue(1));
   myStreamWriter.WriteLine();
   myStreamWriter.Flush();
   myStreamWriter.Close();
   myFileStream.Close();
}

// Write the contents of the incoming SOAP message to the log file.
public void WriteInputAfterDeserialize(SoapMessage message)
{
   FileStream myFileStream =
      new FileStream(filename, FileMode.Append, FileAccess.Write);
   StreamWriter myStreamWriter = new StreamWriter(myFileStream);
   myStreamWriter.WriteLine();
   myStreamWriter.WriteLine("The values of the out parameter are:");
   myStreamWriter.WriteLine("The value of the out parameter is: {0}",
      message.GetOutParameterValue(0));
   myStreamWriter.WriteLine("The values of the return parameter are:");
   myStreamWriter.WriteLine("The value of the return parameter is: {0}",
      message.GetReturnValue());
   myStreamWriter.Flush();
   myStreamWriter.Close();
   myFileStream.Close();
}

' Process the SOAP message received and write to log file.
Public Overrides Sub ProcessMessage(message As SoapMessage)
   Select Case message.Stage
      Case SoapMessageStage.BeforeSerialize
         WriteOutputBeforeSerialize(message)
      Case SoapMessageStage.AfterSerialize
         WriteOutputAfterSerialize(message)
      Case SoapMessageStage.BeforeDeserialize
         WriteInputBeforeDeserialize(message)
      Case SoapMessageStage.AfterDeserialize
         WriteInputAfterDeserialize(message)
      Case Else
            Throw New Exception("invalid stage")
   End Select
End Sub

' Write the contents of the outgoing SOAP message to the log file.
Public Sub WriteOutputBeforeSerialize(message As SoapMessage)
   Dim myFileStream As New FileStream( _
      filename, FileMode.Append, FileAccess.Write)
   Dim myStreamWriter As New StreamWriter(myFileStream)
   myStreamWriter.WriteLine( _
      "================================== Request at " & _
      DateTime.Now)
   myStreamWriter.WriteLine("The method that has been invoked is: ")
   myStreamWriter.WriteLine(ControlChars.Tab & message.MethodInfo.ToString())
   myStreamWriter.WriteLine("The contents of the SOAPAction HTTP header is:")
   myStreamWriter.WriteLine(ControlChars.Tab & message.Action)
   myStreamWriter.WriteLine("The contents of HTTP Content-type header is:")
   myStreamWriter.WriteLine(ControlChars.Tab & message.ContentType)
   If message.OneWay Then
      myStreamWriter.WriteLine( _
         "The method invoked on the client shall not wait" & _
         " till the server finishes")
   Else
      myStreamWriter.WriteLine( _
         "The method invoked on the client shall wait" & _
         " till the server finishes")
   End If
   myStreamWriter.WriteLine( _
      "The site where the XML Web service is available is: ")
   myStreamWriter.WriteLine(ControlChars.Tab & message.Url)
   myStreamWriter.WriteLine("The values of the in parameters are:")
   myStreamWriter.WriteLine("Value of first in parameter: {0}", _
      message.GetInParameterValue(0))
   myStreamWriter.WriteLine("Value of second in parameter: {0}", _
      message.GetInParameterValue(1))
   myStreamWriter.WriteLine()
   myStreamWriter.Flush()
   myStreamWriter.Close()
   myFileStream.Close()
End Sub

' Write the contents of the incoming SOAP message to the log file.
Public Sub WriteInputAfterDeserialize(message As SoapMessage)
   Dim myFileStream As _
      New FileStream(filename, FileMode.Append, FileAccess.Write)
   Dim myStreamWriter As New StreamWriter(myFileStream)
   myStreamWriter.WriteLine()
   myStreamWriter.WriteLine("The values of the out parameter are:")
   myStreamWriter.WriteLine("The value of the out parameter is: {0}", _
      message.GetOutParameterValue(0))
   myStreamWriter.WriteLine("The values of the return parameter are:")
   myStreamWriter.WriteLine("The value of the return parameter is: {0}", _
      message.GetReturnValue())
   myStreamWriter.Flush()
   myStreamWriter.Close()
   myFileStream.Close()
End Sub

Remarks

The primary use of the SoapMessage class is for SOAP extensions, representing the data in a SOAP request or SOAP response. When the ProcessMessage method is called, a SoapExtension receives a SoapMessage at each SoapMessageStage. It is up to the particular SOAP extension to choose how to process the SoapMessage. Common SOAP extensions include encryption and compression.

SOAP extensions can be applied to either or both an XML Web service method created using ASP.NET or an XML Web service client. When a SOAP extension is applied to an XML Web service method, the ProcessMessage method receives an instance of SoapServerMessage, which derives from SoapMessage. Likewise, when a SOAP extension is applied to an XML Web service client, ProcessMessage receives an instance of SoapClientMessage.

Properties

Action	When overridden in a derived class, gets the SOAPAction HTTP request header field for the SOAP request or SOAP response.
ContentEncoding	Gets or sets the contents of the `Content-Encoding` HTTP header.
ContentType	Gets or sets the HTTP `Content-Type` of the SOAP request or SOAP response.
Exception	Gets the SoapException from the call to the XML Web service method.
Headers	A collection of the SOAP headers applied to the current SOAP request or SOAP response.
MethodInfo	When overridden in a derived class, gets a representation of the method prototype for the XML Web service method for which the SOAP request is intended.
OneWay	Gets a value indicating the OneWay property of either the SoapDocumentMethodAttribute or the SoapRpcMethodAttribute attribute applied to the XML Web service method.
SoapVersion	Gets the version of the SOAP protocol used to communicate with the XML Web service.
Stage	Gets the SoapMessageStage of the SoapMessage.
Stream	Gets the data representing the SOAP request or SOAP response in the form of a Stream.
Url	When overridden in a derived class, gets the base URL of the XML Web service.

Methods

EnsureInStage()	When overridden in a derived class, asserts that the current SoapMessageStage is a stage where in parameters are available.
EnsureOutStage()	When overridden in a derived class, asserts that the current SoapMessageStage stage is a stage where out parameters are available.
EnsureStage(SoapMessageStage)	Ensures that the SoapMessageStage of the call to the XML Web service method is the stage or stages passed in. If the current processing stage is not one of the stages passed in, an exception is thrown.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetInParameterValue(Int32)	Gets the parameter passed into the XML Web service method at the specified index.
GetOutParameterValue(Int32)	Gets the out parameter passed into the XML Web service method at the specified index.
GetReturnValue()	Gets the return value of an XML Web service method.
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Applies to