General Socket Options
Level	Option	Description	*	R	W	Value	Type
SOL_SOCKET	SO_ATTACH_FILTER	Attach Filter	?	?	?	Integer	int
SOL_SOCKET	SO_BINDTODEVICE	Bind to Device	?	?	?	String	char*
SOL_SOCKET	SO_BROADCAST	Enable Broadcast	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_BSDCOMPAT	Request BSD bug-for-bug Compatibility	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_DEBUG	Enable Socket Debugging	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_DETACH_FILTER	Detach Filter	?	?	?	Integer	int
SOL_SOCKET	SO_DONTROUTE	Forbid Routing	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_ERROR	Last Error	Y	Y	Y	Integer	int
SOL_SOCKET	SO_KEEPALIVE	Enable Keeping Connection Alive	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_LINGER	Linger Until Data Sent	Y	Y	Y	Linger	struct linger
SOL_SOCKET	SO_NO_CHECK	No Checking	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_OOBINLINE	Place Out-of-Band Inline	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_PASSCRED	Enable Passing User Credentials	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_PEERCRED	Peer Credentials	Y	Y	Y	Credentials	struct ucred
SOL_SOCKET	SO_PRIORITY	Set the queue priority	Y	Y	Y	Integer	int
SOL_SOCKET	SO_RCVBUF	Receive Buffer Size	Y	Y	Y	Integer	int
SOL_SOCKET	SO_RCVLOWAT	Receive Low Water Mark	Y	Y	N	Integer	int
SOL_SOCKET	SO_RCVTIMEO	Receive Timeout	Y	Y	Y	Time	struct timeval
SOL_SOCKET	SO_REUSEADDR	Reuse Address	Y	Y	Y	Boolean	int
SOL_SOCKET	SO_REUSEPORT	Reuse Address (multicasting)	N	-	-	Boolean	int
SOL_SOCKET	SO_SECURITY_AUTHENTICATION	Security Authentication	N	-	-	Integer	int
SOL_SOCKET	SO_SECURITY_ENCRYPTION_NETWORK	Security Encryption Network	N	-	-	Integer	int
SOL_SOCKET	SO_SECURITY_ENCRYPTION_TRANSPORT	Security Encryption Transport	N	-	-	Integer	int
SOL_SOCKET	SO_SNDBUF	Send Buffer Size	Y	Y	Y	Integer	int
SOL_SOCKET	SO_SNDLOWAT	Send Low Water Mark	Y	Y	Y	Integer	int
SOL_SOCKET	SO_SNDTIMEO	Send Timeout	Y	Y	Y	Time	struct timeval
SOL_SOCKET	SO_TYPE	Socket Type	Y	Y	Y	Integer	int