sharelin onPacketPI

void PacketHandler::onPacketPI(const g2::Packet& pk, ip::Endpoint ep, ip::protocol::Type proto)
{
    verb2::g2 << "Got ping from " << ep << std::endl;
    g2::Reader r(pk);

    bool bUdp = false;
    bool bRelay = false;
    ip::Endpoint to;

    while (r.next())
    {
        if(r.type() == g2::UDP)
        {
            g2::Reader rudp(r.child(), g2::Reader::payload);
            to.address = rudp.pod<uint32>();
            to.port = rudp.pod<uint16>();
            if( !to.empty() )
            {
                bUdp = true;
            }
        }
        else if (r.type() == g2::RELAY)
        {
            bRelay = true;
        }
    }

    if(!bUdp && !bRelay)
    {
        // Direct Ping
        g2::Packet po;
        g2::Writer w(po);

        w.Begin( g2::PO );
        w.Close( g2::PO );

        manager_.transceiver()->send(ep, po);
    }

    if(bUdp && !bRelay)
    {
        // /PI/UDP
        // TODO: Relay UDP pings if neighbour is G2 HUB
    }

    if(bUdp && bRelay)
    {
        g2::Packet po;
        g2::Writer w(po);

        w.Begin( g2::PO );
            w.Begin( g2::RELAY );
            w.Close( g2::RELAY );
        w.Close( g2::PO );

        manager_.transceiver()->send(to, po);
    }
}