Continue SSH Keyboard-Interactive Authentication

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Demonstrates the Chilkat Ssh.ContinueKeyboardAuth method, which submits a response to a keyboard-interactive prompt. The only argument is the response text; for a request containing multiple prompts, an XML response is supplied instead. It returns XML indicating the next prompt or the final result.

Background: This is the second half of the keyboard-interactive exchange started by StartKeyboardAuth. A server may issue several rounds of prompts, so a robust client loops: submit answers, read the returned XML, and continue until authentication succeeds or fails. Prompt responses are typically secrets, so obtain them from interactive input rather than embedding them in code.

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bool success = false;

//  Demonstrates the Ssh.ContinueKeyboardAuth method, which submits a response to a
//  keyboard-interactive prompt.  The only argument is the response.  For multiple prompts, an
//  XML response is supplied instead.

Chilkat.Ssh ssh = new Chilkat.Ssh();

//  Connect to the SSH server.  Port 22 is the usual SSH port.
int sshPort = 22;
success = ssh.Connect("ssh.example.com",sshPort);
if (success == false) {
    Debug.WriteLine(ssh.LastErrorText);
    return;
}

//  Begin keyboard-interactive authentication to receive the server's prompt(s).
string infoRequestXml = ssh.StartKeyboardAuth("mySshLogin");
if (ssh.LastMethodSuccess == false) {
    Debug.WriteLine(ssh.LastErrorText);
    return;
}

//  Normally you would not hard-code the response (typically the password) in source.  You
//  should instead obtain it from an interactive prompt.
string response = "mySshPassword";

//  Submit the response.  The returned XML indicates the next prompt or the final result.
string result = ssh.ContinueKeyboardAuth(response);
if (ssh.LastMethodSuccess == false) {
    Debug.WriteLine(ssh.LastErrorText);
    return;
}

Debug.WriteLine(result);

ssh.Disconnect();