import com.sun.corba.se.spi.servicecontext.ORBVersionServiceContext; //导入依赖的package包/类
protected void addServiceContexts(CorbaMessageMediator messageMediator)
{
    ORB orb = (ORB)messageMediator.getBroker();
    CorbaConnection c = (CorbaConnection) messageMediator.getConnection();
    GIOPVersion giopVersion = messageMediator.getGIOPVersion();

    ServiceContexts contexts = messageMediator.getRequestServiceContexts();

    addCodeSetServiceContext(c, contexts, giopVersion);

    // Add the RMI-IIOP max stream format version
    // service context to every request.  Once we have GIOP 1.3,
    // we could skip it since we now support version 2, but
    // probably safer to always send it.
    contexts.put(MaxStreamFormatVersionServiceContext.singleton);

    // ORBVersion servicecontext needs to be sent
    ORBVersionServiceContext ovsc = new ORBVersionServiceContext(
                    ORBVersionFactory.getORBVersion() ) ;
    contexts.put( ovsc ) ;

    // NOTE : We only want to send the runtime context the first time
    if ((c != null) && !c.isPostInitialContexts()) {
        // Do not do c.setPostInitialContexts() here.
        // If a client interceptor send_request does a ForwardRequest
        // which ends up using the same connection then the service
        // context would not be sent.
        SendingContextServiceContext scsc =
            new SendingContextServiceContext( orb.getFVDCodeBaseIOR() ) ; //d11638
        contexts.put( scsc ) ;
    }
}
 

import com.sun.corba.se.spi.servicecontext.ORBVersionServiceContext; //导入依赖的package包/类
private void initServiceContextRegistry( ORB orb )
{
    ServiceContextRegistry scr = orb.getServiceContextRegistry() ;

    scr.register( UEInfoServiceContext.class ) ;
    scr.register( CodeSetServiceContext.class ) ;
    scr.register( SendingContextServiceContext.class ) ;
    scr.register( ORBVersionServiceContext.class ) ;
    scr.register( MaxStreamFormatVersionServiceContext.class ) ;
}
 

import com.sun.corba.se.spi.servicecontext.ORBVersionServiceContext; //导入依赖的package包/类
protected void consumeServiceContexts(ORB orb,
                                    CorbaMessageMediator messageMediator)
{
    ServiceContexts ctxts = messageMediator.getReplyServiceContexts();
    ServiceContext sc ;
    ORBUtilSystemException wrapper = ORBUtilSystemException.get( orb,
            CORBALogDomains.RPC_PROTOCOL ) ;

    if (ctxts == null) {
        return; // no service context available, return gracefully.
    }

    sc = ctxts.get( SendingContextServiceContext.SERVICE_CONTEXT_ID ) ;

    if (sc != null) {
        SendingContextServiceContext scsc =
            (SendingContextServiceContext)sc ;
        IOR ior = scsc.getIOR() ;

        try {
            // set the codebase returned by the server
            if (messageMediator.getConnection() != null) {
                ((CorbaConnection)messageMediator.getConnection()).setCodeBaseIOR(ior);
            }
        } catch (ThreadDeath td) {
            throw td ;
        } catch (Throwable t) {
            throw wrapper.badStringifiedIor( t ) ;
        }
    }

    // see if the version subcontract is present, if yes, then set
    // the ORBversion
    sc = ctxts.get( ORBVersionServiceContext.SERVICE_CONTEXT_ID ) ;

    if (sc != null) {
        ORBVersionServiceContext ovsc =
           (ORBVersionServiceContext) sc;

        ORBVersion version = ovsc.getVersion();
        orb.setORBVersion( version ) ;
    }

    getExceptionDetailMessage(messageMediator, wrapper);
}
 

import com.sun.corba.se.spi.servicecontext.ORBVersionServiceContext; //导入依赖的package包/类
protected ServiceContexts getServiceContextsForReply(
    CorbaMessageMediator messageMediator, ServiceContexts contexts)
{
    CorbaConnection c = (CorbaConnection) messageMediator.getConnection();

    if (((ORB)messageMediator.getBroker()).subcontractDebugFlag) {
        dprint(".getServiceContextsForReply: "
               + opAndId(messageMediator)
               + ": " + c);
    }

    if (contexts == null) {
        contexts = new ServiceContexts(((ORB)messageMediator.getBroker()));
    }

    // NOTE : We only want to send the runtime context the first time

    if (c != null && !c.isPostInitialContexts()) {
        c.setPostInitialContexts();
        SendingContextServiceContext scsc =
            new SendingContextServiceContext(
                ((ORB)messageMediator.getBroker()).getFVDCodeBaseIOR()) ;

        if (contexts.get( scsc.getId() ) != null)
            throw wrapper.duplicateSendingContextServiceContext() ;

        contexts.put( scsc ) ;

        if ( ((ORB)messageMediator.getBroker()).subcontractDebugFlag)
            dprint(".getServiceContextsForReply: "
                   + opAndId(messageMediator)
                   + ": added SendingContextServiceContext" ) ;
    }

    // send ORBVersion servicecontext as part of the Reply

    ORBVersionServiceContext ovsc
        = new ORBVersionServiceContext(ORBVersionFactory.getORBVersion());

    if (contexts.get( ovsc.getId() ) != null)
        throw wrapper.duplicateOrbVersionServiceContext() ;

    contexts.put( ovsc ) ;

    if ( ((ORB)messageMediator.getBroker()).subcontractDebugFlag)
        dprint(".getServiceContextsForReply: "
               + opAndId(messageMediator)
               + ": added ORB version service context");

    return contexts;
}