The long-term credential mechanism relies on a long-term credential, in the form of a username and password that are shared between client and server. The credential is considered long-term since it is assumed that it is provisioned for a user and remains in effect until the user is no longer a subscriber of the system or until it is changed.
You can configure the Long-term credentials in the sgcWebSockets STUN client using the following code.
oSTUN := TsgcSTUNClient.Create(nil);
oSTUN.Host := 'stun.sgcwebsockets.com';
oSTUN.Port := 3478;
oSTUN.STUNOptions.Authentication.Credentials := stauLongTermCredential;
oSTUN.STUNOptions.Authentication.Username := 'user_name';
oSTUN.STUNOptions.Authentication.Password := 'secret';
oSTUN.SendRequest;
If server requires long-term credentials and the credentials sent by the client are wrong, the will receive a 401 Unauthorized error as a response in the OnSTUNResponseError event.