# Gibberish

A basic module for IM using the Jabber/XMPP protocol with PLT Scheme.

## Protocol Support

Should eventually implement XMPP-Core and XMPP-IM to conform with RFCs 3920 and 3921.  

## example chat client

<code>
(require xmpp)

(define (read-input prompt)
  (display prompt)
  (read-line (current-input-port)))

(define (chat)
  (let ((jid  (read-input "jid: "))
        (pass (read-input "password: "))
        (to   (read-input "chat with: ")))
    (with-xmpp-session jid pass 
                       (set-xmpp-handler 'message print-message)
                       (let loop ()                         
                         (let ((msg (read-line (current-input-port))))
                           (send (message to msg))
                           (loop))))))
</code>


## possiby interesting extensions to implement. 

see http://xmpp.org/extensions/

* XEP-0047: In-Band Bytestreams
* XEP-0066: Out of Band Data
* XEP-0030: Service Discovery
* XEP-0060: Publish-Subscribe
* XEP-0045: Multi-User Chat
* XEP-0149: Time Periods
* XEP-0166: Jingle
* XEP-0174: Serverless Messaging
* XEP-0199: XMPP Ping
* XEP-0224: Attention
* XEP-0077: In-Band Registration