poi519 / nan-xmpp

A PLT scheme module for the XMPP or Jabber protocol

XMPP

A production module for IM using the Jabber/XMPP protocol with Racket.

Protocol Support

Should eventually implement XMPP-Core and XMPP-IM to conform with RFCs 3920 and 3921. Progress toward supporting the full protocol is currently documented in the file xmpp.rkt

Installation

(require (planet marune/nan-xmpp))

Session

Sending

Response Handlers

Example Chat Client

#lang racket/base
(require  "../nan-xmpp/main.rkt"
          racket/match)

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

(define jid (read-input "jid: "))
(define password (read-input "password: "))
(define to (read-input "chat to: "))

(define conn (new-connection (jid-host jid)))
(open-session conn jid password)

(define (handler sz)
  (match sz
    ((list 'message _ ...) (print-message sz))
    ((list 'presence _ ...) (print-presence sz))
    (_ 'do-nothing)))

(xmpp-set-handler conn handler)

(let message-loop () 
  (define txt (read-line))
  (unless (string=? txt "/exit")
    (xmpp-send conn (message #:to to #:body txt))                      
    (message-loop)))

(kill-connection! conn)

possibly 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 (IN PROGRESS)
• XEP-0149: Time Periods
• XEP-0166: Jingle
• XEP-0174: Serverless Messaging
• XEP-0199: XMPP Ping
• XEP-0224: Attention
• XEP-0077: In-Band Registration