func newPassiveSocket(logger *ftpLogger, passiveOpts *PassiveOpts, tlsConfig *tls.Config) (*ftpPassiveSocket, error) {
socket := &ftpPassiveSocket{
listener: nil,
listenerMutex: &sync.RWMutex{},
conn: nil,
connMutex: &sync.RWMutex{},
closed: false,
closedMutex: &sync.RWMutex{},
connected: goevent.NewEvent(),
host: "",
port: 0,
logger: logger,
passiveOpts: passiveOpts,
tlsConfig: tlsConfig,
}
listener, err := socket.createListener()
if err != nil {
return nil, fmt.Errorf("newPassiveSocket socket could not be created: %s", err)
}
socket.listener = listener
go socket.acceptConnection()
return socket, nil
}
func newActiveSocket(host string, port int, logger *ftpLogger) (*ftpActiveSocket, error) {
connectTo := buildTcpString(host, port)
logger.Print("Opening active data connection to " + connectTo)
raddr, err := net.ResolveTCPAddr("tcp", connectTo)
if err != nil {
logger.Print(err)
return nil, err
}
tcpConn, err := net.DialTCP("tcp", nil, raddr)
if err != nil {
logger.Print(err)
return nil, err
}
socket := new(ftpActiveSocket)
socket.conn = tcpConn
socket.host = host
socket.port = port
socket.logger = logger
socket.connected = goevent.NewEvent()
socket.connected.Set()
return socket, nil
}