SOAP request works with SoapUI but not with Savon, how to debug?

Question

I tested a SOAP API in SoapUI and it worked just fine.

I then implemented the same request in my Rails 5 app using Savon. It worked for a few weeks and then stopped working. SoapUI still works so the API provider of course tells me that the error is in my app.

The error I get is very generic:

404 not found
The requested URL was not found on this server.

1. It worked in my app
2. Now it does not work anymore in my app
3. In SoapUI the request works

I tried adding log_level: :debug to my client but do not get any more details.

client = Savon.client(wsdl: 'URL')
response = client.call(:action, message: {})

Any ideas on how to start debugging this?

Answer 1

Write a Ruby script outside of RoR then more people might be able to help. I for myself have no idea how Rails works but I certainly know a bit of Ruby :-).

Answer 2

I was able to solve the problem. I don't know if that's a Savon Bug, but Savon extracted a wrong Endpoint URL from the WSDL, whereas SoapUI extracted the correct Endpoint URL.

Now I am overwriting the URL with the correct one:

client.wsdl.endpoint = URI.parse ENDPOINT_URL

and it works again.