Creating a Request Handler

HydraExpress Components : Web Service Development Guide : PART IV Extending your Applications : SOAP Message Handlers : Creating Your Own Handlers : Write the Handler Implementation : Creating a Request Handler

First, we'll create a request handler to handle requests for both the client and the server. A request handler processes the message body itself.

This example uses rwsf::CallInfo’s isClient() method (Response Handlers) to determine whether the request is client or server-based, and then either adds the SOAP header, or gets its value. Here is the included class SoapSecurityHandler.

#include <rwsf/webservice/MessageHandler.h>

class SoapSecurityHandler: public rwsf::MessageHandlerImp { //1

public:

virtual void invoke(rwsf::CallInfo& callInfo)

{

// is this the client?

if(callInfo.isClient()) { //2

callInfo.addRequestSoapHeader(

rwsf::XmlName("Security"), "SomeSecurityData");

}

else { //3

std::string value = callInfo.getRequestSoapHeaderValue(

rwsf::XmlName("Security"));

// add the value back to the response headers

callInfo.addResponseSoapHeader(

rwsf::XmlName("SecurityResponse"), value + ": From Server");

}

};

//1 Derives from rwsf::MessageHandlerImp.

//2 If isClient is true, this is the client and not the server. If it’s the client, let’s add a request SOAP header containing security data.

//3 Or, if this is the server, get the client’s SOAP header and add it to the response header.