Send a multicast immediate request to a specific topic

C# |
public void send( string topic, LBMRequest lbmreq, int flags )

- topic (String)
- Topic name to send message to or null for non-topic
- lbmreq (LBMRequest)
- LBMRequest object
- flags (Int32)
- Flags indicating various conditions

Possible OR'd set of flag value include:
SRC_NONBLOCK, SRC_BLOCK, and MSG_FLUSH
Warning: It is not safe to call this method from a context thread callback.