[Imap-protocol] example of authentication PLAIN with imap?

[Bill Janssen]

> Good luck!

> 

> Proper understanding of how all this works requires carefully going 

> through RFC 3501 section 6.2.2, and all of RFC 4422 and RFC 4616.



>From 6.2.2 of 3501:


      A server challenge consists of a 
      command continuation request response with the "+" token followed 
      by a BASE64 encoded string.  The client response consists of a 
      single line consisting of a BASE64 encoded string.  If the client 
      wishes to cancel an authentication exchange, it issues a line 
      consisting of a single "*".  If the server receives such a 
      response, it MUST reject the AUTHENTICATE command by sending a 
      tagged BAD response. 

So I believe that a plain authentication challenge should look something
like this (for valid account with username "janssen", password "foo"):

C: 4 authenticate plain\r\n
S: +\r\n
C: AGphbnNzZW4AZm9v\r\n
S: 4 OK authenticate\r\n

D'accord?

But what I see (from Thunderbird) is

C: 4 authenticate plain\r\n
S: +\r\n
C: AGphbnNzZW4AZm9v

so my server never knows when to stop waiting for the client to send
more data...

Bill