Programming Jabber

The main script

Now that we have the subroutines and callbacks set up, all we need to do is define the Jabber server and room information:

Server   = 'gnu.mine.nu'
Username = 'kassist'
Password = 'pass'
Resource = 'py'

Room     = 'jdev'
ConfServ = 'conference.jabber.org'
Nick     = 'kassist'

The kassist user can be set up simply by using the reguser script presented in Section 7.4:

$ ./reguser gnu.mine.nu username=kassist password=pass
[Attempt] (kassist) Successful registration
$

In the same way as in previous recipes’ scripts, a connection attempt is made, followed by an authentication attempt:

con = jabber.Client(host=Server,debug=0,log=0)
try:
    con.connect()
except IOError, e:
    print "Couldn't connect: %s" % e
    sys.exit(0)
else:
    print "Connected"

if con.auth(Username,Password,Resource):
    print "Logged in as %s to server %s" % ( Username, Server )
else:
    print "Problems authenticating: ", con.lastErr, con.lastErrCode
    sys.exit(1)

Then the message and presence callbacks messageCB() and presenceCB() are defined to the connection object in con:

con.setMessageHandler(messageCB)
con.setPresenceHandler(presenceCB)

After sending initial presence, informing the JSM (and anyone who might be subscribed to kassist’s presence) of the assistant’s availability:

con.send(jabber.Presence())

we also construct—from the Room, ConfServ, and Nick variables—and send the <presence/> element for negotiating entry to the jdev room hosted by the Conferencing component at conference.jabber.org:

roomjid = Room + '@' + ...