uasstatetrying.cxx

SIP（Session Initiation Protocol）是由IETF定义

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
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 *    distribution.
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 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
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static const char* const UasStateTrying_cxx_Version =
    "$Id: UasStateTrying.cxx,v 1.6 2002/11/12 20:25:13 veer Exp $";

#include "UasStateTrying.hxx"
#include "UaStateFactory.hxx"
#include "BasicAgent.hxx"
#include "StatusMsg.hxx"
#include "SipCommand.hxx"

using Vocal::UA::UasStateTrying;

using namespace Vocal;

void 
UasStateTrying::recvRequest(UaBase& agent, Sptr<SipMsg> msg)
                 throw (CInvalidStateException&)
{
    cpLog(LOG_DEBUG, "UasStateTrying::recvRequest");
    if((msg->getType() == SIP_CANCEL) ||
       (msg->getType() == SIP_BYE))
    {
        //Send 200 
        //Sptr<StatusMsg> status =
         agent.sendReplyForRequest(msg, 200);
	//agent.setResponse(status); // VEER
        if(msg->getType() == SIP_CANCEL)
        {
            agent.sendReplyForRequest(agent.getRequest(), 487);
            if(agent.getControllerAgent())
                agent.getControllerAgent()->doCancel();
        }
        //Notify CC
        if(agent.getControllerAgent())
        {
            agent.getControllerAgent()->receivedRequest(agent, msg);
        }
        changeState(agent, UaStateFactory::instance().getState(U_STATE_FAILURE));
    }
    else if(msg->getType() == SIP_INVITE)
    {
        changeState(agent, UaStateFactory::instance().getState(U_STATE_S_TRYING));
    }
}

void 
UasStateTrying::sendStatus(UaBase& agent, Sptr<SipMsg> msg)
                 throw (CInvalidStateException&)
{
    Sptr<StatusMsg> statusMsg;
    statusMsg.dynamicCast(msg);
    assert(statusMsg != 0);
    int statusCode = statusMsg->getStatusLine().getStatusCode();
    //Only handle status code 18x, 2xx and above
    if(statusCode == 100)
    {
        //Do nothing
        return;
    }


    if((statusCode >= 180) && (statusCode < 200))
    {
        //Send status message
        agent.sendReplyForRequest(agent.getRequest(), statusCode);
        //Transit to ringing
        changeState(agent, UaStateFactory::instance().getState(U_STATE_RINGING));
    }
    else if(statusCode > 200)
    {
        //Send status message
        agent.sendReplyForRequest(agent.getRequest(), statusCode);
        //Transit to Failure
        changeState(agent, UaStateFactory::instance().getState(U_STATE_FAILURE));
    }
    else if(statusCode == 200)
    {
        //Send status message
        ///Manipulate SDP data
        Sptr<SipSdp> sipSdp;
        sipSdp.dynamicCast(msg->getContentData(0));

        Sptr<SipCommand> sipCmd;
        sipCmd.dynamicCast(agent.getRequest());
        assert(sipCmd != 0);
        Sptr<StatusMsg> sendSMsg = new StatusMsg(*sipCmd, statusCode);
        sendSMsg->setNumContentData(0);
        if(sipSdp != 0)
        {
            sendSMsg->setContentData(sipSdp.getPtr());
            agent.setLocalSdp(sipSdp);
        }
        //// Find a nice way to do it
        Sptr<BaseUrl> bUrl = sipCmd->getTo().getUrl();
        Sptr<SipUrl> mUrl;
        mUrl.dynamicCast(bUrl);
        assert(mUrl != 0);

        mUrl->setHost(theSystem.gethostAddress());
        mUrl->setPort(Data(UaBase::mySipPort));

        SipContact me;
        me.setUrl(mUrl);
        sendSMsg->setNumContact( 0 );
        sendSMsg->setContact( me );

        cpLog(LOG_DEBUG, "(%s) sending status %s", className().c_str(), sendSMsg->encode().logData());
        agent.getSipTransceiver()->sendReply(sendSMsg);
	agent.setResponse(sendSMsg);
        if(agent.getControllerAgent()) agent.getControllerAgent()->inCall();
        agent.setCallLegState(C_LIVE);
        //Transit to ringing
        changeState(agent, UaStateFactory::instance().getState(U_STATE_INCALL));
    }
}