React Native

Restart/Resume FTP Download

See more FTP Examples

Resume downloading a file from an FTP server. React Native

import { Ftp2 } from '@chilkat/react-native'

async function chilkatExample() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  const ftp = new Ftp2();

  ftp.hostname = 'ftp.example.com';
  ftp.username = 'login';
  ftp.password = 'password';

  // Connect and login to the FTP server.
  try {
    await ftp.connectAsync();
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }

  // Change to the remote directory where the file is located.
  // This step is only necessary if the file is not in the root directory
  // for the FTP account.
  try {
    await ftp.changeRemoteDirAsync('temp');
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }

  // To resume a download, it is assumed that the partial file
  // is already present on the local filesystem.
  // You only need to set the RestartNext property to resume
  // the download.  The Chilkat FTP component sets the resume
  // point by getting the existing size of the target (local) file.
  ftp.restartNext = true;

  const localFilename = 'big.zip';
  const remoteFilename = 'big.zip';

  // Resume downloading...
  try {
    await ftp.getFileAsync(remoteFilename, localFilename);
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }

  await ftp.disconnectAsync();

  console.log('File Downloaded!');
}