Returns the local address and port number for an async-io-state that has a socket.
async-io-state-address async-io-state => address, port
An integer or an ipv6-address object.
async-io-state-address returns the local address and port number for async-io-state if it has a socket (currently all states).
address is the local host address of the socket in the state.
port is the local port number of the socket in the state.
LispWorks User Guide and Reference Manual - 13 Feb 2015