`SysSockGetRecvSizeUdp` (FUN)

FUNCTION SysSockGetRecvSizeUdp : __XINT

Check actual received data on the UDP socket.

InOut:

Scope	Name	Type	Comment
Return	`SysSockGetRecvSizeUdp`	`__XINT`	Number of bytes actual available in the socket
Input	`hSocketUdp`	`RTS_IEC_HANDLE`	Handle to the UDP socket
	`diTimeout`	`DINT`	Timeout to wait for received data. -1 = Infinite wait 0 = no wait
	`pResult`	POINTER TO RTS_IEC_RESULT	Pointer to runtime system error code (see CmpErrors.library)

SysSockGetRecvSizeUdp (FUN)