How to remove "SOAPAction" HTTP header from Savon request - ruby

Question

How would I remove the HTTP headers from a Savon request for example
client.request 'v5:ProcessShipments' do
client.http.headers["SOAPAction"] = "example_post"
end
This would generate
DEBUG -- : SOAPAction: example_post
And the server would respond
Server did not recognize the value of HTTP Header SOAPAction: example_post.
However I dont want to have any SOAPAction(s)
I have tried to clear the variable and delete it. I search for a while and couldn't find anything so I hope this hasn't been asked before.
Thanks in advance.
If I dont override it then by default Savon will use the client.request 'v5:ProcessShipments', which is also incorrect.

Answer 1

Here is a quote from savon documentation for the future references:
SOAPAction is an HTTP header information required by legacy services.
If present, the header value must have double quotes surrounding the
URI-reference (SOAP 1.1. spec, section 6.1.1).
By reading savon source code I figured out that Savon::Client#request method sets "SOAPAction" header automatically before it yields a block. I tried to delete SOAPAction header and it worked:
require 'savon'
client = Savon::Client.new do
wsdl.document = "test.wsdl"
end
client.request :wsdl, "sayHello" do
http.headers.delete("SOAPAction")
end
Here is the request it generates:
SOAP request: http://www.examples.com/SayHello/
DEBUG -- : Content-Type: text/xml;charset=UTF-8, Content-Length: 332
DEBUG -- :
<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:wsdl="http://www.examples.com/wsdl/HelloService.wsdl"
xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
<env:Body>
<wsdl:sayHello></wsdl:sayHello>
</env:Body>
</env:Envelope>
As you can see there is no SOAPAction HTTP header.
HTH