Example usage for org.apache.commons.net.ftp FTPCmd EPRT

Introduction

In this page you can find the example usage for org.apache.commons.net.ftp FTPCmd EPRT.

Prototype

FTPCmd EPRT

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Usage

From source file:com.atomicleopard.thundr.ftp.commons.FTP.java

/***
 * A convenience method to send the FTP EPRT command to the server,
 * receive the reply, and return the reply code.
 *
 * Examples://from www. j a  va  2 s  .c  o  m
 * <code>
 * <ul>
 * <li>EPRT |1|132.235.1.2|6275|</li>
 * <li>EPRT |2|1080::8:800:200C:417A|5282|</li>
 * </ul>
 * </code>
 * <p>
 * @see "http://www.faqs.org/rfcs/rfc2428.html"
 *
 * @param host  The host owning the port.
 * @param port  The new port.
 * @return The reply code received from the server.
 * @exception FTPConnectionClosedException
 *      If the FTP server prematurely closes the connection as a result
 *      of the client being idle or some other reason causing the server
 *      to send FTP reply code 421.  This exception may be caught either
 *      as an IOException or independently as itself.
 * @exception IOException  If an I/O error occurs while either sending the
 *      command or receiving the server reply.
 * @since 2.2
 ***/
public int eprt(InetAddress host, int port) throws IOException {
    int num;
    StringBuilder info = new StringBuilder();
    String h;

    // If IPv6, trim the zone index
    h = host.getHostAddress();
    num = h.indexOf("%");
    if (num > 0) {
        h = h.substring(0, num);
    }

    info.append("|");

    if (host instanceof Inet4Address) {
        info.append("1");
    } else if (host instanceof Inet6Address) {
        info.append("2");
    }
    info.append("|");
    info.append(h);
    info.append("|");
    info.append(port);
    info.append("|");

    return sendCommand(FTPCmd.EPRT, info.toString());
}

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