Dart

AWS Transfer for SFTP (Amazon S3)

See more SFTP Examples

Once you've setup your AWS Transfer for SFTP in the AWS Console, interacting with it is no different than any other SSH/SFTP server. AWS will provide a private key in PEM format. It is used for authentication (instead of a password). Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final sftp = CkSFtp();

  // Connect to the AWS SFTP server.
  // Change the domain to your value.
  final domain = 's-123456df999999fab.server.transfer.eu-west-2.amazonaws.com';
  final port = 22;
  try {
    sftp.connect(domain, port);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Load your AWS SFTP private key PEM file..
  final sshKey = CkSshKey();
  final String keyText;
  try {
    keyText = sshKey.loadText('qa_data/pem/s3_sftp_privateKey.pem');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  try {
    sshKey.fromOpenSshPrivateKey(keyText);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Authenticate with the SSH server using the private key.
  try {
    sftp.authenticatePk('myUsername', sshKey);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // After authenticating, the SFTP subsystem must be initialized:
  try {
    sftp.initializeSftp();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Upload from the local file to the SSH server.
  // Important -- the remote filepath is the 1st argument,
  // the local filepath is the 2nd argument;
  final remoteFilePath = 'hamlet.xml';
  final localFilePath = 'c:/temp/hamlet.xml';

  try {
    sftp.uploadFileByName(remoteFilePath, localFilePath);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Success.');
}