React Native

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. React Native

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

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

  const sftp = new SFtp();

  // 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.
  const hostname = 'sftp.example.com';
  const port = 22;
  try {
    await sftp.connectAsync(hostname, port);
  } catch {
    console.log(sftp.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 {
    await sftp.authenticatePwAsync('myLogin', 'myPassword');
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  // After authenticating, the SFTP subsystem must be initialized:
  try {
    await sftp.initializeSftpAsync();
  } catch {
    console.log(sftp.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. 
  let handle: string;
  try {
    handle = await sftp.openFileAsync('myTest.txt', 'writeOnly', 'createTruncate');
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  // Write some text to the file:
  try {
    await sftp.writeFileTextAsync(handle, 'ansi', 'abcdefghijklmnopqrstuvwxyz');
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  try {
    await sftp.writeFileTextAsync(handle, 'ansi', '1234567890');
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  try {
    await sftp.writeFileTextAsync(handle, 'ansi', 'ABCDEFGHIJKLMNOPQRSTUVWXYZ');
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  // Close the file.
  try {
    await sftp.closeHandleAsync(handle);
  } catch {
    console.log(sftp.lastErrorText);
    return;
  }

  console.log('Success.');
}