SIP SIMPLE Client SDK

== Sample Code ==

This sample code implements a minimalist VoIP client. After [wiki:SipInstallation installing the SDK], copy and paste this code into your Python interpreter to run it.

{{{
from threading import Event

from application.notification import NotificationCenter

from sipsimple.core import SIPURI, ToHeader

from sipsimple.account import AccountManager
from sipsimple.application import SIPApplication
from sipsimple.storage import FileStorage
from sipsimple.lookup import DNSLookup, DNSLookupError
from sipsimple.session import Session
from sipsimple.streams import AudioStream
from sipsimple.threading.green import run_in_green_thread

class SimpleCallApplication(SIPApplication):
def __init__(self):
SIPApplication.__init__(self)
self.ended = Event()
self.callee = None
self.session = None
notification_center = NotificationCenter()
notification_center.add_observer(self)

def call(self, callee):
self.callee = callee
self.start(FileStorage('config'))

@run_in_green_thread
def _NH_SIPApplicationDidStart(self, notification):
self.callee = ToHeader(SIPURI.parse(self.callee))
try:
routes = DNSLookup().lookup_sip_proxy(self.callee.uri, ['udp']).wait()
except DNSLookupError, e:
print 'DNS lookup failed: %s' % str(e)
else:
account = AccountManager().default_account
self.session = Session(account)
self.session.connect(self.callee, routes, [AudioStream(account)])

def _NH_SIPSessionGotRingIndication(self, notification):
print 'Ringing!'

def _NH_SIPSessionDidStart(self, notification):
audio_stream = notification.data.streams[0]
print 'Audio session established using "%s" codec at %sHz' % (audio_stream.codec, audio_stream.sample_rate) 'Session started!'

def _NH_SIPSessionDidFail(self, notification):
print 'Failed to connect'
self.stop()

def _NH_SIPSessionDidEnd(self, notification):
print 'Session ended'
self.stop()

def _NH_SIPApplicationDidEnd(self, notification):
self.ended.set()

# place an audio call to the specified URI
application = SimpleCallApplication()
target_uri="sip:3333@sip2sip.info" application.call("sip:3333@ag-projects.com")
application.call(target_uri)
print "Placing call to %s, call, press Enter to quit the program" % target_uri
raw_input()
application.session.end()
application.ended.wait()
}}}