How to create soap header with Python suds library

问题:

I need to call a SOAP service with a message like this:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:sub="https://secure.xpslogic.com/service/wijnen/sub">
   <soapenv:Header>
      <sub:auth>
         <token>?</token>
         <!--Optional:-->
         <user_id>?</user_id>
         <!--Optional:-->
         <user_token>?</user_token>
      </sub:auth>
   </soapenv:Header>
   <soapenv:Body>
      <sub:customer_logos_pull>
         <!--Optional:-->
         <language>?</language>
         <!--Optional:-->
         <limit>?</limit>
         <!--Optional:-->
         <options_utc>?</options_utc>
      </sub:customer_logos_pull>
   </soapenv:Body>
</soapenv:Envelope>

I've got some php example code, which sets the headers as follows (and which works perfectly well):

auth = array(); $auth['token'] = 'xxx'; if ($auth) { // add auth header $this->clients[$module]->__setSoapHeaders( new SoapHeader( $namespace, 'auth', $auth ) ); }

I now construct the (empty) body and the header as follows with the Python suds lib:

from suds.client import Client
from suds import WebFault

client = Client(url='https://example.com/sub.wsdl')

auth = client.factory.create('auth')
auth.token = 'xxx'
client.set_options(soapheaders=auth)

customerLogosPull = client.factory.create('customer_logos_pull')
result = client.service.customer_logos_pull(customerLogosPull)

but this gives me a not well-formed (invalid token) message. When turning on logging I find this to be the message:

DEBUG:suds.mx.core:processing:
(Content){
   tag = "auth"
   value =
      (auth){
         token = "xxx"
         user_id = None
         user_token = None
      }
   type = <Element:0x10ff8c950 name="auth">
   <Complex:0x10ff8cbd0>
      <Sequence:0x10ff8cc50>
         <Element:0x10ff8cd10 name="token" type="(u'string', u'http://www.w3.org/2001/XMLSchema')" />
         <Element:0x10ff8cd50 name="user_id" type="(u'string', u'http://www.w3.org/2001/XMLSchema')" />
         <Element:0x10ff8cd90 name="user_token" type="(u'string', u'http://www.w3.org/2001/XMLSchema')" />
      </Sequence>
   </Complex>
</Element>
 }

It looks pretty fine by me, but it also gives a not well-formed (invalid token). seeing that the suds docs has 3 examples on how to pass in soap headers, I tried the other two as well:

>>> token = client.factory.create('auth.token')
>>> token.set(TOKEN)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: token instance has no attribute 'set'

and

>>> client.set_options(soapheaders={'auth': {'token': 'xxx'}})
>>> customerLogosPull = client.factory.create('customer_logos_pull')
>>> result = client.service.customer_logos_pull(customerLogosPull)

which gives this content in the logs, and still a not well-formed (invalid token):

(Content){
   tag = "auth"
   value =
      {
         token = "xxx"
      }
   type = <Element:0x106049290 name="auth">
   <Complex:0x106049510>
      <Sequence:0x106049590>
         <Element:0x106049650 name="token" type="(u'string', u'http://www.w3.org/2001/XMLSchema')" />
         <Element:0x106049690 name="user_id" type="(u'string', u'http://www.w3.org/2001/XMLSchema')" />
         <Element:0x1060496d0 name="user_token" type="(u'string', u'http://www.w3.org/2001/XMLSchema')" />
      </Sequence>
   </Complex>
</Element>
 }

Does anybody know how I can correctly set the token in the header using Python? All tips are welcome!

回答1:

I got my soap Headers working as below:

from suds.sax.element import Element
ssnp = Element("xsi:SessionHeader").append(Element('xsi:sessionId').setText("xxxxxxx"))
client.set_options(soapheaders=ssnp)

corresponding to soap Headers shown below in soap request xml

<SOAP-ENV:Header>
  <xsi:SessionHeader>
     <xsi:sessionId>xxxxxxx</xsi:sessionId>
  </xsi:SessionHeader>
</SOAP-ENV:Header>

We can see what request was sent using print client.last_sent()