def __call__(self, *args, **kwargs):
msg = SoapMessage(self.service.serviceType, self.name)
# see it there is an async flag, defaults to False
async = bool('async' in kwargs and kwargs.pop('async'))
# there may be a starting deferred also; only relevant
# if in async mode
deferred = (async and 'deferred' in kwargs) and kwargs.pop('deferred') or None
# update the message with input argument values
for arg in self.inargs:
val = kwargs.get(arg.name)
if val is None:
raise KeyError('Missing IN argument: %s' % (arg.name, ))
msg.set_arg(arg.name, val)
# send the message
result = self._soap_sender(self.service.device, self.service.controlURL,
msg, async=async, deferred=deferred)
if async:
# assume it's a Deferred
result.addCallback(decode_soap, self.outargs)
return result
else:
return decode_soap(result, self.outargs)
def send_soap_message(url, msg, mpost=False):
"""
Send a SOAP message to the given URL.
The HTTP headers mandated by the UPnP specification are added. Also, if
posting fails with a 405 error, another attempt is made with slightly
different headers and method set to M-POST.
Return a SoapMessage or a SoapError, depending on the outcome of the call.
Raise a urllib2.URLError or a urllib2.HTTPError if something goes wrong.
"""
req = MPOSTRequest(url) if mpost else urllib2.Request(url)
# add headers to the request
req.add_header('CONTENT-TYPE', 'text/xml; charset="utf-8"')
req.add_header('USER-AGENT', 'OS/1.0 UPnP/1.0 airpnp/1.0')
if mpost:
req.add_header('MAN',
'"http://schemas.xmlsoap.org/soap/envelope/"; ns=01')
req.add_header('01-SOAPACTION', msg.get_header())
else:
req.add_header('SOAPACTION', msg.get_header())
# add the SOAP message as data
req.add_data(msg.tostring().encode("utf-8"))
try:
handle = urllib2.urlopen(req)
response = SoapMessage.parse(handle)
except urllib2.HTTPError, err:
if err.code == 405 and not mpost:
log.msg('Got 405 response in response to SOAP message, trying' +
'the M-POST way', ll=2)
return send_soap_message(url, msg, True)
elif err.code == 500:
# SOAP error
response = SoapError.parse(err.read())
else:
log.err(err, 'Failed to send SOAP message')
raise err
