On 21.07.12 15:58, Wang Ye wrote:
Hi, everyone!
I am currently configuring my IM server with Vysper. I did everything based on
the documentation. And it worked fine for me. However I have a question about
user authentication.
I implemented the interface UserAuthentication but in the method:
boolean verifyCredentials(String username, String passwordCleartext, Object
credentials);
There is three parameters, the first two are easy to understand as we always
type in username and password to login. But I can not get clear what the third
one, credentials, a java object is used for. I logged it in my
verifyCredentials implementation but it seems to be null (and always null) when
I logged in with the Messages App in OS X. Since I am new to XMPP Protocol, I
have no idea what the object credentials is. So can anyone explain this? Thanks
in advance.
XMPP supports different authentication methods, via SASL (there should
be plenty of resources on the internet regarding SASL, it is
standardized by the IETF). Some of these methods might differ from
simply requiring username/password. To support a wide range of SASL
methods, a third parameter was added.
Vysper currently implements SASL ANONYMOUS and SASL PLAIN, both not
requiring the third parameter.
Bernd
