def handle_error(fail):
if fail.check(error.Error):
err = fail.value
status = int(err.status)
if not mpost and status == http.NOT_ALLOWED:
# new attempt
# don't pass the deferred here, because we're already
# within the callback/errback chain
return send_soap_message_deferred(url, msg, mpost=True)
elif status == http.INTERNAL_SERVER_ERROR:
# return to the callback chain
return SoapError.parse(err.response)
log.err(fail, "Failed to send SOAP message to %s" % (url, ))
fail.raiseException()
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
