React Native

Get a Remote FTP File's Last-Modified Time by Name

Demonstrates the Chilkat Ftp2.GetLastModifiedTimeByNameStr method, which returns the last-modified time of a named item in the current remote directory as an RFC 822 date-time string. The only argument is the filename.

Background: This queries one item's modification time directly (typically via MDTM) rather than pulling and scanning a whole listing — efficient when you already know the filename and just need its timestamp, for example to decide whether a local copy is stale. The RFC 822 string includes a timezone offset, so the moment is unambiguous.

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React Native

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

async function chilkatExample() {
  // Demonstrates the Ftp2.GetLastModifiedTimeByNameStr method, which returns the last-modified time
  // of a named item in the current remote directory as an RFC 822 date-time string.  The only
  // argument is the filename.

  const ftp = new Ftp2();

  ftp.hostname = 'ftp.example.com';
  ftp.username = 'myFtpLogin';

  // Normally you would not hard-code the password in source.  You should instead obtain it
  // from an interactive prompt, environment variable, or a secrets vault.
  ftp.password = 'myPassword';

  try {
    await ftp.connectAsync();
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }

  try {
    await ftp.changeRemoteDirAsync('public_html');
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }

  let lastModified: string;
  try {
    lastModified = await ftp.getLastModifiedTimeByNameStrAsync('report.pdf');
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }

  console.log(`Last modified: ${lastModified}`);

  try {
    await ftp.disconnectAsync();
  } catch {
    console.log(ftp.lastErrorText);
    return;
  }
}