if (port != (in_port_t)20) {
try_socksize(connected_socket, SO_SNDBUF, sendsize);
try_socksize(connected_socket, SO_RCVBUF, recvsize);
if (port != (in_port_t)20) {
try_socksize(connected_socket, SO_SNDBUF, sendsize);
try_socksize(connected_socket, SO_RCVBUF, recvsize);