¿Por qué obtengo un error/tiempo de espera de conexión cuando uso python para conectarme con Microsoft CRM?

Question

Cuando trato de conectarme a un servicio web de MS CRM usando suds/python-ntlm, recibo un tiempo de espera de solicitudes. Sin embargo, el código que estoy intentando reemplazar, que llama a la aplicación de línea de comandos cURL para hacer la misma llamada, tiene éxito.

Claramente, algo es diferente en la forma en que cURL está enviando los datos del comando, pero me condenaré si sé cuál es la diferencia. A continuación se encuentran los detalles completos de las diversas llamadas. ¿Alguien tiene algún consejo?

Aquí está el código que realiza la solicitud, seguido de la salida. El código de comando cURL está debajo de eso, y su respuesta sigue. Las host, los usuarios y las contraseñas se han cambiado para proteger a los inocentes, por supuesto.

wsdl_url = 'https://client.service.host/MSCrmServices/2007/MetadataService.asmx?WSDL' 
username = r'domain\user.name' 
password = 'userpass' 

from suds.transport.https import WindowsHttpAuthenticated 
from suds.client import Client 

import logging 
logging.basicConfig(level=logging.INFO) 
logging.getLogger('suds.client').setLevel(logging.DEBUG) 
logging.getLogger('suds.transport').setLevel(logging.DEBUG) 

ntlmTransport = WindowsHttpAuthenticated(username=username, password=password) 
metadata_client = Client(wsdl_url, transport=ntlmTransport) 

request = metadata_client.factory.create('RetrieveAttributeRequest') 
request.MetadataId = '00000000-0000-0000-0000-000000000000' 
request.EntityLogicalName = 'opportunity' 
request.LogicalName = 'new_typeofcontact' 
request.RetrieveAsIfPublished = 'false' 

attr = metadata_client.service.Execute(request) 
print attr 

Aquí está la salida:

DEBUG:suds.client:sending to (http://client.service.host/MSCrmServices/2007/MetadataService.asmx) 
message: 
<SOAP-ENV:Envelope xmlns:ns0="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://schemas.microsoft.com/crm/2007/WebServices" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"> 
    <SOAP-ENV:Header/> 
    <ns0:Body> 
     <ns1:Execute> 
     <ns1:Request xsi:type="ns1:RetrieveAttributeRequest"> 
      <ns1:MetadataId>00000000-0000-0000-0000-000000000000</ns1:MetadataId> 
      <ns1:EntityLogicalName>opportunity</ns1:EntityLogicalName> 
      <ns1:LogicalName>new_typeofcontact</ns1:LogicalName> 
      <ns1:RetrieveAsIfPublished>false</ns1:RetrieveAsIfPublished> 
     </ns1:Request> 
     </ns1:Execute> 
    </ns0:Body> 
</SOAP-ENV:Envelope> 
DEBUG:suds.client:headers = {'SOAPAction': u'"http://schemas.microsoft.com/crm/2007/WebServices/Execute"', 'Content-Type': 'text/xml'} 
DEBUG:suds.transport.http:sending: 
URL:http://client.service.host/MSCrmServices/2007/MetadataService.asmx 
HEADERS: {'SOAPAction': u'"http://schemas.microsoft.com/crm/2007/WebServices/Execute"', 'Content-Type': 'text/xml', 'Content-type': 'text/xml', 'Soapaction': u'"http://schemas.microsoft.com/crm/2007/WebServices/Execute"'} 
MESSAGE: 
<SOAP-ENV:Envelope xmlns:ns0="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://schemas.microsoft.com/crm/2007/WebServices" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"> 
    <SOAP-ENV:Header/> 
    <ns0:Body> 
     <ns1:Execute> 
     <ns1:Request xsi:type="ns1:RetrieveAttributeRequest"> 
      <ns1:MetadataId>00000000-0000-0000-0000-000000000000</ns1:MetadataId> 
      <ns1:EntityLogicalName>opportunity</ns1:EntityLogicalName> 
      <ns1:LogicalName>new_typeofcontact</ns1:LogicalName> 
      <ns1:RetrieveAsIfPublished>false</ns1:RetrieveAsIfPublished> 
     </ns1:Request> 
     </ns1:Execute> 
    </ns0:Body> 
</SOAP-ENV:Envelope> 
ERROR: An unexpected error occurred while tokenizing input 
The following traceback may be corrupted or invalid 
The error message is: ('EOF in multi-line statement', (16, 0)) 

--------------------------------------------------------------------------- 
URLError         Traceback (most recent call last) 

/Users/crose/projects/2366/crm/<ipython console> in <module>() 

/var/folders/nb/nbJAzxR1HbOppPcs6xO+dE+++TY/-Tmp-/python-67186icm.py in <module>() 
    19 request.LogicalName = 'new_typeofcontact' 
    20 request.RetrieveAsIfPublished = 'false' 
    21 
---> 22 attr = metadata_client.service.Execute(request) 
    23 print attr 

/Users/crose/virtualenv/advanis/lib/python2.6/site-packages/suds/client.pyc in __call__(self, *args, **kwargs) 
    537     return (500, e) 
    538   else: 
--> 539    return client.invoke(args, kwargs) 
    540   
    541  def faults(self): 

/Users/crose/virtualenv/advanis/lib/python2.6/site-packages/suds/client.pyc in invoke(self, args, kwargs) 
    596     self.method.name, timer) 
    597   timer.start() 
--> 598   result = self.send(msg) 
    599   timer.stop() 
    600   metrics.log.debug(

/Users/crose/virtualenv/advanis/lib/python2.6/site-packages/suds/client.pyc in send(self, msg) 
    621    request = Request(location, str(msg)) 
    622    request.headers = self.headers() 
--> 623    reply = transport.send(request) 
    624    if retxml: 
    625     result = reply.message 

/Users/crose/virtualenv/advanis/lib/python2.6/site-packages/suds/transport/https.pyc in send(self, request) 
    62  def send(self, request): 
    63   self.addcredentials(request) 
---> 64   return HttpTransport.send(self, request) 
    65  
    66  def addcredentials(self, request): 

/Users/crose/virtualenv/advanis/lib/python2.6/site-packages/suds/transport/http.pyc in send(self, request) 
    75    request.headers.update(u2request.headers) 
    76    log.debug('sending:\n%s', request) 
---> 77    fp = self.u2open(u2request) 
    78    self.getcookies(fp, u2request) 
    79    result = Reply(200, fp.headers.dict, fp.read()) 

/Users/crose/virtualenv/advanis/lib/python2.6/site-packages/suds/transport/http.pyc in u2open(self, u2request) 
    116    return url.open(u2request) 
    117   else: 
--> 118    return url.open(u2request, timeout=tm) 
    119    
    120  def u2opener(self): 

/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.pyc in open(self, fullurl, data, timeout) 
    381    req = meth(req) 
    382 
--> 383   response = self._open(req, data) 
    384 
    385   # post-process response 

/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.pyc in _open(self, req, data) 
    399   protocol = req.get_type() 
    400   result = self._call_chain(self.handle_open, protocol, protocol + 
--> 401         '_open', req) 
    402   if result: 
    403    return result 

/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.pyc in _call_chain(self, chain, kind, meth_name, *args) 
    359    func = getattr(handler, meth_name) 
    360 
--> 361    result = func(*args) 
    362    if result is not None: 
    363     return result 

/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.pyc in http_open(self, req) 
    1128 
    1129  def http_open(self, req): 
-> 1130   return self.do_open(httplib.HTTPConnection, req) 
    1131 
    1132  http_request = AbstractHTTPHandler.do_request_ 

/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.pyc in do_open(self, http_class, req) 
    1103    r = h.getresponse() 
    1104   except socket.error, err: # XXX what error? 
-> 1105    raise URLError(err) 
    1106 
    1107   # Pick apart the HTTPResponse object to get the addinfourl 

URLError: <urlopen error [Errno 60] Operation timed out> 

El comando curl es:

/opt/local/bin/curl --ntlm -u "domain\user.name:userpass" -k -d @- -A "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; InfoPath.1)" -H "Connection: Keep-Alive" -H "Content-Type: text/xml; charset=utf-8" -H "SOAPAction: http://schemas.microsoft.com/crm/2007/WebServices/Execute" https://client.service.host/MSCrmServices/2007/MetadataService.asmx 

Los datos que se canaliza a ese comando curl:

 <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" 
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
      <soap:Header> 
       <CrmAuthenticationToken xmlns="http://schemas.microsoft.com/crm/2007/WebServices"> 
        <AuthenticationType xmlns="http://schemas.microsoft.com/crm/2007/CoreTypes">0</AuthenticationType> 
        <CrmTicket xmlns="http://schemas.microsoft.com/crm/2007/CoreTypes"></CrmTicket> 
        <OrganizationName xmlns="http://schemas.microsoft.com/crm/2007/CoreTypes">CMIFS</OrganizationName> 
        <CallerId xmlns="http://schemas.microsoft.com/crm/2007/CoreTypes">00000000-0000-0000-0000-000000000000</CallerId> 
       </CrmAuthenticationToken> 
      </soap:Header> 


     <soap:Body> 
      <Execute xmlns="http://schemas.microsoft.com/crm/2007/WebServices"> 
       <Request xsi:type="RetrieveAttributeRequest"> 
        <MetadataId>00000000-0000-0000-0000-000000000000</MetadataId> 
        <EntityLogicalName>opportunity</EntityLogicalName> 
        <LogicalName>new_typeofcontact</LogicalName> 
        <RetrieveAsIfPublished>false</RetrieveAsIfPublished> 
       </Request> 
      </Execute> 
     </soap:Body> 


     </soap:Envelope> 

Aquí está la respuesta :

<?xml version="1.0" encoding="utf-8"?> 
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
       xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <soap:Body> 
    <ExecuteResponse 
    xmlns="http://schemas.microsoft.com/crm/2007/WebServices"> 
     <Response xsi:type="RetrieveAttributeResponse"> 
     <AttributeMetadata xsi:type="PicklistAttributeMetadata"> 
      <MetadataId>101346cf-a6af-4eb4-a4bf-9c3c6bbd6582</MetadataId> 
      <SchemaName>New_TypeofContact</SchemaName> 
      <LogicalName>new_typeofcontact</LogicalName> 
      <EntityLogicalName>opportunity</EntityLogicalName> 
      <AttributeType> 
      <Value>Picklist</Value> 
      </AttributeType> 
      <!-- stuff here --> 
     </AttributeMetadata> 
     </Response> 
    </ExecuteResponse> 
    </soap:Body> 
</soap:Envelope> 

Answer 1

Parece que puede tener un problema con la ubicación en el WSDL. Si marca la salida de depuración cuando se dice que está enviando:

DEBUG:suds.transport.http:sending: 
URL:http://client.service.host/MSCrmServices/2007/MetadataService.asmx 

Tenga en cuenta que la URL es http, y que no vibra con la conexión inicial, que era https.

intente modificar la creación de instancias de su cliente mediante la adición de un argumento ubicación para forzarlo a utilizar https, así:

svc_url = 'https://client.service.host/MSCrmServices/2007/MetadataService.asmx' 
metadata_client = Client(wsdl_url, transport=ntlmTransport, location=svc_url) 

(Tenga en cuenta que la URL del servicio debe ser la misma de que la URL de WSDL menos el ?WSDL)

Answer 2

svc_url = 'https://client.service.host/MSCrmServices/2007/MetadataService.asmx' 
metadata_client = Client(wsdl_url, transport=ntlmTransport, location=svc_url, cache=None) 

Añadiendo cache=None en realidad hacer el truco.