taglinefilesource code
keepopen535net/inet/sock.csk->keepopen = 1;
keepopen537net/inet/sock.csk->keepopen = 0;
keepopen618net/inet/sock.cval = sk->keepopen;
keepopen821net/inet/sock.csk->keepopen = 0;
keepopen79net/inet/sock.hkeepopen,
keepopen737net/inet/tcp.cif(sk->keepopen)
keepopen853net/inet/tcp.cif (sk->keepopen) 
keepopen2046net/inet/tcp.csk->keepopen = 1;
keepopen2314net/inet/tcp.cif (sk->keepopen) {
keepopen2553net/inet/tcp.csk->state != TCP_TIME_WAIT && !sk->keepopen) {
keepopen2557net/inet/tcp.cif (sk->keepopen)
keepopen2562net/inet/tcp.cif (sk->state != (unsigned char) sk->keepopen) {
keepopen112net/inet/timer.celse if (sk->keepopen)