WP_Filesystem_ftpsockets::connect()

	public function connect() {
		if ( ! $this->ftp )
			return false;

		$this->ftp->setTimeout(FS_CONNECT_TIMEOUT);

		if ( ! $this->ftp->SetServer( $this->options['hostname'], $this->options['port'] ) ) {
			$this->errors->add( 'connect',
				/* translators: %s: hostname:port */
				sprintf( __( 'Failed to connect to FTP Server %s' ),
					$this->options['hostname'] . ':' . $this->options['port']
				)
			);
			return false;
		}

		if ( ! $this->ftp->connect() ) {
			$this->errors->add( 'connect',
				/* translators: %s: hostname:port */
				sprintf( __( 'Failed to connect to FTP Server %s' ),
					$this->options['hostname'] . ':' . $this->options['port']
				)
			);
			return false;
		}

		if ( ! $this->ftp->login( $this->options['username'], $this->options['password'] ) ) {
			$this->errors->add( 'auth',
				/* translators: %s: username */
				sprintf( __( 'Username/Password incorrect for %s' ),
					$this->options['username']
				)
			);
			return false;
		}

		$this->ftp->SetType( FTP_BINARY );
		$this->ftp->Passive( true );
		$this->ftp->setTimeout( FS_TIMEOUT );
		return true;
	}