Authenticate an IMAP SSH Tunnel with a Password

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Demonstrates the Chilkat Imap.SshAuthenticatePw method, which authenticates the SSH tunnel using a username and password. The first argument is the SSH login name and the second is the SSH password. Call SshOpenTunnel first; after SSH authentication succeeds, connect and log in to IMAP.

Background: This is SSH authentication, which is entirely separate from the IMAP login that follows — the SSH credentials belong to the tunnel/jump host, while the IMAP credentials belong to the mail account. Password authentication is the simplest option; use SshAuthenticatePk for key-based authentication, which is generally preferred for automated jobs.

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bool success = false;

//  Demonstrates the Imap.SshAuthenticatePw method, which authenticates the SSH tunnel with a
//  username and password.  The 1st argument is the SSH login name and the 2nd is the SSH
//  password.  Call SshOpenTunnel first.

Chilkat.Imap imap = new Chilkat.Imap();

//  Open the SSH tunnel first.
int sshPort = 22;
success = imap.SshOpenTunnel("ssh.example.com",sshPort);
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

//  The SSH password is not hard-coded in source.  Insert code here to obtain it from an
//  interactive prompt, environment variable, or a secrets vault.
string sshPassword;

//  Authenticate the SSH tunnel (this is SSH authentication, separate from IMAP login).
success = imap.SshAuthenticatePw("sshUser",sshPassword);
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

//  With the SSH tunnel in place, connect and log in to the IMAP server as usual.  The IMAP
//  traffic flows through the tunnel automatically.
imap.Ssl = true;
imap.Port = 993;
success = imap.Connect("imap.example.com");
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

success = imap.Login("user@example.com","myPassword");
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

success = imap.Disconnect();
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}

success = imap.SshCloseTunnel();
if (success == false) {
    Debug.WriteLine(imap.LastErrorText);
    return;
}