<nSocket>
This is a numeric socket descriptor identifying a socket.
Function SocketCatMark() Professional
Determines whether or not all out-of-band data is read.
Syntax
SocketCatMark( <nSocket> ) --> lYesNoParameters
Return
The function returns .T. (true) when there is no out-of-band data waiting to be read, otherwise .F. (false) is returned.
Description
Out-of-band data may be transmitted separately from regular data packets. If the function returns .T. (true), the next call to SocketRecv() or SocketRecvFrom() performed on the socket will retrieve some or all of the data marked as "out-of-band".
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