pSOSystem System Calls - Read

getsockopt pNA+ System Calls
Socket Level Options
level must be set to SOL_SOCKET for socket level operations. The optname value
can be one of the following:
SO_BROADCAST Allows broadcast datagrams on a socket.
SO_DONTROUTE Indicates that the outgoing messages should not be routed.
Packets directed to unconnected networks are dropped.
SO_ERROR Returns the pending error and clears the error status.
SO_KEEPALIVE Keeps the connection alive by periodically transmitting a
packet over socket s.
SO_LINGER Controls the action taken when unsent messages are queued
on a socket and a close() is executed. If the socket is a
stream socket and SO_LINGER is set (l_onoff set to 1), the
calling task blocks until it can transmit the data or until a
timeout period expires. If SO_LINGER is disabled (l_onoff
set to 0), the socket is deleted immediately. SO_LINGER uses
the linger structure, which is defined as follows:
struct linger {
int l_onoff; /* on/off option */
int l_linger; /* linger time in secs.*/
}
This structure cannot be packed.
SO_OOBINLINE Requests that out-of-band data go into the normal data input
queue as received; it then is accessible with recv()
calls without the MSG_OOB flag.
SO_RCVBUF Adjusts the normal buffer size allocated for a socket input
buffer.
SO_REUSEADDR Indicates that local addresses can be reused in a bind()
call.
SO_REUSEPORT Indicates that local addresses can be reused in a bind()
call. For more information, see section 4.4.3 of the Network
Programming chapter in pSOSystem System Concepts.
SO_SNDBUF Adjusts the normal buffer size allocated for a socket output
buffer.
SO_TYPE Returns the type of socket.
4-18 pSOSystem System Calls