Java

Restart/Resume FTP Upload

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Demonstrates how to restart / resume an FTP upload. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Ftp2;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Ftp2 ftp = new Ftp2();

        ftp.setHostname("ftp.example.com");
        ftp.setUsername("login");
        ftp.setPassword("password");

        // Connect and login to the FTP server.
        try {
            ftp.connect();

            // Change to the remote directory where the file will be uploaded.
            ftp.changeRemoteDir("temp");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // In this example, assume that a previous FTP upload failed,
        // and the incomplete file (bigFile.zip) exists on the FTP server.
        // You only need to set the RestartNext property to resume
        // the upload.  When RestartNext is set, the next call
        // to PutFile (or PutFileFromBinaryData, PutFileFromTextData)
        // will automatically resume the upload from the point of failure.
        // (The way it works is that the FTP component sends a "SIZE";
        // command to the FTP server to find out how many bytes of
        // the file already exist on the server.  It then begins
        // uploading from that point.

        // Note: After PutFile is called, the RestartNext property
        // is automatically set to false.
        ftp.setRestartNext(true);

        // Upload a file with restart.
        String localFilename = "bigFile.zip";
        String remoteFilename = "bigFile.zip";

        try {
            ftp.putFile(localFilename, remoteFilename);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        ftp.disconnect();

        System.out.println("File Uploaded!");
    }
}