opfarendbusy.cxx

SIP（Session Initiation Protocol）是由IETF定义

/* ====================================================================
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static const char* const OpFarEndBusy_cxx_Version =
    "$Id: OpFarEndBusy.cxx,v 1.17 2002/11/09 02:13:07 derekm Exp $";


#include "global.h"
#include <SipEvent.hxx>

#include "OpFarEndBusy.hxx"
#include "UaStateMachine.hxx"
#include "UaCallInfo.hxx"
#include "UaDevice.hxx"

///
using namespace Vocal;


OpFarEndBusy::OpFarEndBusy()
{}


OpFarEndBusy::~OpFarEndBusy()
{}


///

const char* const
OpFarEndBusy::name() const
{
    return "OpFarEndBusy";
}


///
const Sptr < State >
OpFarEndBusy::process( const Sptr < SipProxyEvent > event )
{
    cpLog( LOG_DEBUG, "OpFarEndBusy operation" );

    Sptr < SipEvent > sipEvent;
    sipEvent.dynamicCast( event );
    if ( sipEvent == 0 )
    {
        return 0;
    }
    Sptr < SipMsg > sipMsg = sipEvent->getSipMsg();
    assert( sipMsg != 0 );

    Sptr < StatusMsg > msg;
    msg.dynamicCast( sipMsg );
    if ( msg == 0 )
    {
        return 0;
    }

    Sptr < UaCallInfo > call;
    call.dynamicCast( event->getCallInfo() );
    assert( call != 0 );

    int status;
    int best = 1000;
    bool haveBusy = false;

    Sptr < Contact > contact;
    Sptr < ContactList > contacts = call->getContactList();
    ContactList::iterator iter = contacts->begin();
    while ( iter != contacts->end() )
    {
        contact = (*iter);
        assert( contact != 0 );
        status = contact->getStatus();

        if ( status < best )
        {
            best = status;
            cpLog( LOG_DEBUG, "best == %d", best );
        }
        if ( status == 486 )
        {
            haveBusy = true;
            cpLog( LOG_DEBUG, "status == %d", status );
        }
        iter++;
    }
    if ( best >= 300 && haveBusy )
    {

        UaDevice::instance()->releaseRtpPort();

        cpLog( LOG_DEBUG, "condition: if( best >= 300 && haveBusy ) VALID" );
        Sptr < UaStateMachine > stateMachine;
        stateMachine.dynamicCast( event->getCallInfo()->getFeature() );
        assert( stateMachine != 0 );

        cpLog( LOG_DEBUG, "returning StateBusy");
        return stateMachine->findState( "StateBusy" );
    }
    return 0;
}