public void sendAPDU(Address recipient, OctetString link, IAPDU apdu, bool broadcast)
{
ByteStream queue = new ByteStream();
// BACnet virtual link layer detail
// BACnet/IP
queue.WriteByte(0x81);
// Original-Unicast-NPDU, or Original-Broadcast-NPDU
queue.WriteByte((byte)(broadcast ? 0xb : 0xa));
// NPCI
ByteStream apduStream = new ByteStream();
writeNpci(apduStream, recipient, link, apdu);
// APDU
apdu.write(apduStream);
// Length
queue.WriteShort((ushort)(queue.Position + apduStream.Length + 2));
// Combine the queues
queue.Write(apduStream);
IPEndPoint isa;
if (recipient.IsGlobal)
{
isa = LocalBroadcastAddress.MacAddress.InetSocketAddress;
}
else if (link != null)
{
isa = link.InetSocketAddress;
}
else
{
isa = recipient.MacAddress.InetSocketAddress;
}
this.link.SendPacket(isa, queue.ReadToEnd());
}
protected void writeNpci(ByteStream queue, Address recipient, OctetString link, IAPDU apdu)
{
NPDU.NPDU npci;
if (recipient.IsGlobal)
{
npci = new NPDU.NPDU((Address)null);
}
else if (isLocal(recipient))
{
if (link != null)
{
throw new System.Exception("Invalid arguments: link service address provided for a local recipient");
}
npci = new NPDU.NPDU(null, null, apdu.expectsReply);
}
else
{
if (link == null)
{
throw new System.Exception(
"Invalid arguments: link service address not provided for a remote recipient");
}
npci = new NPDU.NPDU(recipient, null, apdu.expectsReply);
}
npci.write(queue);
}
