NBS.TCP_ReadBuffer (FB)

Like ⇘ NBS.TCP_Read this function block of the ⇘ CAA_NetBaseServices.library serves to read data from the previously established connection given in hConnection. As long as xEnable is TRUE, the handle of the connection is valid. The function block returns the handle of the buffer containing the data. If xReady is TRUE, data has been read successfully and the handle of the buffer is valid. The buffer is passed on and not copied like at NBS.TCP_Read.

Input:

xEnable	BOOL	see: ⇘ “CAA 指南”
hConnection	CAA.HANDLE	Handle of the connection

Output:

xDone	BOOL	see: ⇘ “CAA 指南”
xBusy	BOOL	see: ⇘ “CAA 指南”
xError	BOOL	see: ⇘ “CAA 指南”
eError	NBS.ERROR	Error id
xReady	BOOL	TRUE: Data received – Handle of buffer is valid FALSE: No data received – Handle of buffer is invalid
hBuffer	CAA.HANDLE	Handle of the buffer