def doconnect(self):
""" connect to the server. """
target = None
port = None
try:
dns = getdns()
import dns.resolver
except: pass
else:
try:
xmpp_srv = "_xmpp-client._tcp.%s" % (self.cfg.server or self.cfg.host)
answers = dns.resolver.query(xmpp_srv, dns.rdatatype.SRV)
except ImportError:
loging.warn("resolver is not available.")
except (dns.resolver.NXDOMAIN, dns.resolver.NoAnswer):
logging.info("no appropriate SRV record found.")
else:
addresses = {}
intmax = 0
for answer in answers:
try:
intmax += answer.priority
addresses[intmax] = (answer.target.to_text()[:-1], answer.port)
except Exception, ex: logging.debug("%s - skipping %s: %s" % (self.cfg.name, str(answer), str(ex)))
priorities = [x for x in addresses.keys()]
priorities.sort()
picked = random.randint(0, intmax)
for priority in priorities:
if picked <= priority:
target = addresses[priority]
break
if not target or self.cfg.noresolver: target = (self.cfg.server or self.cfg.host, self.cfg.port)
logging.debug("%s - TARGET is %s" % (self.cfg.name, target))
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.setblocking(0)
self.sock.settimeout(30)
logging.warn("connecting to %s (%s)" % (target, self.cfg.name))
self.sock.connect(target)
self.target = target
logging.warn("connected! trying to login as %s (%s)" % (self.cfg.user, self.cfg.name))
return True