200ackuas.cxx

SIP（Session Initiation Protocol）是由IETF定义

/*
 * VOCAL is licensed under the Vovida Software License, Version 1.0
 * See the LICENSE AND COPYRIGHT section at the end of this file.
 */

static const char* const Ack200UAS_cxx_Version =
    "$Id: 200AckUAS.cxx,v 1.1.2.3 2003/02/20 18:37:20 chok Exp $";

#include "SipTransceiverFilter.hxx"
#include "InviteMsg.hxx"
#include "AckMsg.hxx"
#include "StatusMsg.hxx"
#include "SipSdp.hxx"
#include "Sptr.hxx"

using namespace Vocal;
using namespace Vocal::SDP;

/*
 *  This is the UAS side of a INVITE-200-ACK test.
 *  It receives an INVITE and then sends a 200 OK response.
 *  When it receives the ACK, it stops the retransmission
 *  of 200.
 *
 *  The UAC side is in 200AckUAC.cxx.
 */

int
main( int argc, char** argv )
{
    if( argc <= 1 )
    {
        cerr << endl << "Error: Missing local SIP port argument" << endl;
        cerr << "Usage: " << argv[0] << " <UAS_SIP_port>" << endl << endl;
        return -1;
    }
    cpLogSetPriority( LOG_DEBUG_STACK );
    // cpLogSetPriority( LOG_NOTICE );

    SipTransceiverFilter sipStack( argv[0], strtol( argv[1], NULL, 10 ) );

    Sptr < SipMsgQueue > mq = sipStack.receive();
    assert( mq != 0 );

    Sptr < InviteMsg > invite;
    invite.dynamicCast( mq->back() );

    if (invite == 0)
    {
        cerr << "Not an INVITE!" << endl;
        return -1;
    }

    cout << "Received INVITE" << endl;

    // Respond with the 200
    StatusMsg inviteOk( *invite, 200 );

    inviteOk.setNumContact( 0 );   // Clear UAC contact

    Sptr <SipUrl> myUrl = new SipUrl();
    myUrl->setUserValue( Data("UAS") );
    myUrl->setHost( Data("127.0.0.1") );
    myUrl->setPort( argv[1] );

    SipContact me;
    me.setUrl( myUrl );
    inviteOk.setContact( me );

    Sptr<SipContentData> contData = invite->getContentData( 0 );
    Sptr<SipSdp> remoteSdp;
    remoteSdp.dynamicCast( contData );
    if( remoteSdp != 0 )
    {
        cout << "Change RTP port" << endl;
        SipSdp localSdp;
        localSdp.setSdpDescriptor( remoteSdp->getSdpDescriptor() );
        localSdp.setRtpPort( 23456 );
        inviteOk.setContentData( &localSdp, 0 );
    }

    cout << "Send 200" << endl;
    sipStack.sendReply( inviteOk );

    mq = sipStack.receive();

    assert( mq != 0 );

    if( mq->back()->getType() != SIP_ACK )
    {
        cerr << "Not an ACK!" << endl;
        return -1;
    }

    cout << "Received ACK" << endl;

    // TODO: Stop retransmission of 200

    cout << "Test Completed, sleep for 5 seconds" << endl;
    sleep( 5 );

    return 0;
}

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