How can I populate header values in SOAP document?

Hi all,

Got a question about the Ruby SOAP library. I’ve generated a proxy
using the SOAP::WSDLDriverFactory as follows:

ws =
SOAP::WSDLDriverFactory.new(‘http://foo.com/foo.wsdl’).create_rpc_driver

I can see that this generates methods for each defined operation, and I
use them thusly:

ws.WSGetResults(:maxRecords => 1, …)

The method and parameters are translated to the appropriate XML in the
SOAP message body. However, some operations require a ‘User’ and
‘Password’ to be in the message header. I’ve looked through the
documentation and mailing lists with no luck. How can one achieve this?

My code is listed below.

Thanks!

Brian H.

---- soaptest.rb ----
require ‘soap/wsdlDriver’
require ‘date’

ws =
SOAP::WSDLDriverFactory.new(‘http://foo.com/foo.wsdl’).create_rpc_driver
ws.generate_explicit_type = true
r = ws.WSHeartbeat({}) # Works because it doesn’t require authentication
r = g.WSGetXmlResults(:recordId => 123, :recordLimit => 200) # Doesn’t
work

---- Example SOAP request, according to vendor ----

<?xml version="1.0" encoding="utf-8"?>

<soap:Envelope xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance
xmlns:xsd=“http://www.w3.org/2001/XMLSchema
xmlns:soap=“http://schemas.xmlsoap.org/soap/envelope/”>
soap:Header


string
string

</soap:Header>
soap:Body

int
int

</soap:Body>
</soap:Envelope>


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On Fri, 27 Oct 2006, Jeremy H. wrote:

jeremy: it’s nice to see you’re not programming python for a living
anymore!

:wink:

-a

I’m not sure if it can be done dynamically, but you can create a
ClientSimpleHeader which hooks into the inbound and outbound stream.
I’ve only hooked into the outbound and it looked something like the code
below.

The code is untested and extrapolated from my case to yours, so take the
general idea and see where it gets you.

And if you didn’t know, driver.wiredump_dev is your friend.

Good Luck.

enjoy,

-jeremy

----- customer_header.rb -----
require ‘soap/header/simplehandler’
require ‘stringio’

class CustomSimpleHeader < SOAP::Header::SimpleHandler
# encapsulate outbound only headers, this is set once and never
# touched again.
#
def initialize(itemname,namespace,childdata)
super(XSD::QName.new(namespace,name))

    case childdate
    # other classes if you want
    # Or do something with XML::Mappging
    when Hash
        xml = StringIO.new
        childdata.each_pair do |key,value|
            xml.puts("<#{key}>#{value}</#{key}>")
        end
        @item = xml.string
    else
        @item = childdata.to_s
    end
end

def on_simple_outbound
    @item if @item
end

def on_simple_inbound
end

end

---- possible soaptest.rb -----
require ‘customer_header’

assuming this works with a dynamic proxy

ws =
SOAP::WSDLDriverFactor.new(“http://foo.com/foo.wsdl”).create_rpc_driver
ws.wiredump_dev = STDERR
ws.generate_explicit_type = true
user = “my user”
password = “my password”
ws.headerhandler << CustomSimpleHeader.new(“WSAuthHeader”,
{ “User” => user,
“Password” => password })


Jeremy H. [email protected]

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