JavaScript

Limit FTP DownloadTree by Modification Date

Demonstrates the Chilkat Ftp2.SetOldestDateStr method, which sets the oldest remote modification time eligible for DownloadTree. The only argument is an RFC 822 date-time string; files older than it are skipped. It is a void method.

Background: This is a date filter for the recursive download: set a cutoff and DownloadTree pulls only files modified on or after it, ignoring everything older. It is ideal for fetching just recent activity — new logs, today's uploads — from a directory that also holds a large archive you do not want to re-download. The RFC 822 string carries a timezone so the cutoff is unambiguous.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

JavaScript

var success = false;

//  Demonstrates the Ftp2.SetOldestDateStr method, which sets the oldest remote modification time
//  eligible for DownloadTree.  The only argument is an RFC 822 date-time string.  It is a void
//  method.

var ftp = new CkFtp2();

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";

success = ftp.Connect();
if (success == false) {
    console.log(ftp.LastErrorText);
    return;
}

success = ftp.ChangeRemoteDir("public_html");
if (success == false) {
    console.log(ftp.LastErrorText);
    return;
}

//  Only files modified on or after this date will be considered by DownloadTree.  Files older
//  than this are skipped.
ftp.SetOldestDateStr("Wed, 01 Jul 2026 00:00:00 -0000");

//  Download only the recently-modified files in the remote tree.
success = ftp.DownloadTree("qa_output/recent");
if (success == false) {
    console.log(ftp.LastErrorText);
    return;
}

console.log("Downloaded recently modified files.");

success = ftp.Disconnect();
if (success == false) {
    console.log(ftp.LastErrorText);
    return;
}