unix_recv (FUN)¶

FUNCTION unix_recv : INT

receive a message from a unix domain socket see manpage recv

Returnvalue: returns the number of bytes received, or -1 if an error occurred. In the event of an error, errno is set to indicate the error.

Internally, this function calls recv(), which returns of type ssize_t. This might be different to the return value of the IEC function unix_recv, which is INT. Calling with length >= INT Max can lead to invalid return values of this function.

InOut:

Scope	Name	Type
Return	unix_recv	INT
Input	sockfd	INT
	buf	POINTER TO BYTE
	len	ULINT
	flags	INT