Dart

SFTP Write Text File

See more SFTP Examples

Demonstrates how to create a new text file on the remote SSH server, append text by calling WriteFileText one or more times, and then close the file. 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();

  // Set some timeouts, in milliseconds:
  sftp.connectTimeoutMs = 5000;
  sftp.idleTimeoutMs = 15000;

  // Connect to the SSH server.  
  // The standard SSH port = 22
  // The hostname may be a hostname or IP address.
  final hostname = 'sftp.example.com';
  final port = 22;
  try {
    sftp.connect(hostname, port);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Authenticate with the SSH server.  Chilkat SFTP supports
  // both password-based authenication as well as public-key
  // authentication.  This example uses password authenication.
  try {
    sftp.authenticatePw('myLogin', 'myPassword');
  } 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;
  }

  // Open a file on the server for writing.
  // "createTruncate" means that a new file is created; if the file already exists, it is opened and truncated. 
  final String handle;
  try {
    handle = sftp.openFile('myTest.txt', 'writeOnly', 'createTruncate');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Write some text to the file:
  try {
    sftp.writeFileText(handle, 'ansi', 'abcdefghijklmnopqrstuvwxyz');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  try {
    sftp.writeFileText(handle, 'ansi', '1234567890');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  try {
    sftp.writeFileText(handle, 'ansi', 'ABCDEFGHIJKLMNOPQRSTUVWXYZ');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Close the file.
  try {
    sftp.closeHandle(handle);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Success.');
}