JavaScript Requires Chilkat v11.0.0+

FTP Connect, Examine Server Certificate, and then Authenticate

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Demonstrates how to connect to an FTP server, examine the server's SSL/TLS certificate, and then, if it meets the application's security requirements, proceed to authenticate. JavaScript

var success = false;

//  This example assumes Chilkat Ftp2 to have been previously unlocked.
//  See Unlock Ftp2 for sample code.

var ftp = new CkFtp2();

ftp.Hostname = "www.authtls-ftps-server.com";
ftp.Username = "FTP_LOGIN";
ftp.Password = "FTP_PASSWORD";
ftp.AuthTls = true;
ftp.Port = 21;

//  Connect to the FTP server using explicit TLS (AUTH TLS).
success = ftp.ConnectOnly();
if (success == false) {
    console.log(ftp.LastErrorText);
    return;
}

//  Get the FTP server's certificate.
var serverCert = new CkCert();
success = ftp.GetServerCert(serverCert);
if (success == false) {
    console.log(ftp.LastErrorText);
    return;
}

//  Now that we have the certificate, we can check it in any way we desire.
//  (See the online reference documentation for the certificate object's methods
//  and properties)...

//  Assuming the certificate is OK, proceed to authenticate with the FTP server.
success = ftp.LoginAfterConnectOnly();
if (success == false) {
    console.log(ftp.LastErrorText);
    return;
}

//  Proceed with uploading/download files, etc...
//  

ftp.Disconnect();
console.log("Success.");