Get the SSH Server's Authentication Methods

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Demonstrates the Chilkat Ssh.GetAuthMethods method, which queries a connected but unauthenticated SSH server for the authentication methods it advertises. It takes no arguments and returns a lowercase, comma-separated list such as publickey,password,keyboard-interactive. Call it after Connect and before authenticating.

Background: Knowing what the server accepts lets a client choose the right authentication path — for example, falling back to keyboard-interactive when password auth is not offered. Note the documented connection side effect: querying methods advances the SSH authentication state, so call it at the correct point in the sequence.

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bool success = false;

//  Demonstrates the Ssh.GetAuthMethods method, which queries a connected but unauthenticated SSH
//  server for the authentication methods it advertises.  It takes no arguments and returns a
//  lowercase, comma-separated list such as "publickey,password,keyboard-interactive".

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;
}

//  Query the advertised authentication methods.  Call after Connect, before authenticating.
string methods = ssh.GetAuthMethods();
if (ssh.LastMethodSuccess == false) {
    Debug.WriteLine(ssh.LastErrorText);
    return;
}

Debug.WriteLine("Server auth methods: " + methods);

ssh.Disconnect();