Socket send/recv flags

Macros
#define	NRF_MSG_PEEK   0x02
	Return data from the beginning of receive queue without removing data from the input queue.
#define	NRF_MSG_DONTWAIT   0x40
	Enables non-blocking operation for this specific function call.
#define	NRF_MSG_WAITALL   0x100
	Requests that the function blocks read operation until the full amount of data requested has been received.
#define	NRF_MSG_WAITACK   0x200
	Request a blocking send operation until the request is acknowledged.

Detailed Description