Open a Custom SSH Channel Type

See more SSH Examples

Demonstrates the Chilkat Ssh.OpenCustomChannel method, which requests a channel whose application-defined type is supplied as the only argument. It returns the channel number, or -1 if the server rejects the channel. The server must implement that channel type.

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    boolean success = false;

    //  Demonstrates the Ssh.OpenCustomChannel method, which requests a custom SSH channel whose
    //  application-defined type is supplied as the only argument.  It returns the channel number,
    //  or -1 if the server rejects the channel.  The server must implement that channel type.

    CkSsh ssh = new CkSsh();

    int sshPort = 22;
    success = ssh.Connect("ssh.example.com",sshPort);
    if (success == false) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    //  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.
    String password = "mySshPassword";

    success = ssh.AuthenticatePw("mySshLogin",password);
    if (success == false) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    //  Request an application-defined channel type.  The server must support it.
    String channelType = "my-custom-channel@example.com";
    int channelNum = ssh.OpenCustomChannel(channelType);
    if (channelNum < 0) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    Log.i(TAG, "Opened custom channel: " + String.valueOf(channelNum));

    //  The channel is used with the normal channel send, receive, EOF, CLOSE, and release methods.

    ssh.Disconnect();

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}