I am making a SOAP call with using a Ruby On Rails gem Savon and when making a request, I get this error message:
Bad Request - Invalid Header
HTTP Error 400. The request has an invalid header name.
It sounds pretty descriptive, but I am still not able to figure out the problem. I also found a few topics here on SO, but none of them has unfortunately helped me.
Here's how I do make the connection:
client = Savon.client(endpoint: wsdl_url,
namespace: '',
env_namespace: :s,
basic_auth: ["username", "password"],
ssl_verify_mode: :none,
log: true,
logger: Rails.logger,
pretty_print_xml: true)
@response = client.call('MyAction',
soap_action: 'url address',
xml: xml_payload,
headers: {
'Content-Type': 'application/soap+xml; charset=utf-8',
})
And here's the generated error from the (terminal) console:
SOAP response (status 400)
<?xml version="1.0"?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<HTML>
<HEAD><TITLE>Bad Request</TITLE>
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"/>
<BODY><h2>Bad Request - Invalid Header</h2>
<hr><p>HTTP Error 400. The request has an invalid header name.</p>
</hr></BODY>
</HEAD>
</HTML>
If I change the header config from this:
@response = client.call('MyAction',
soap_action: 'url address',
xml: xml_payload,
headers: {
'Content-Type': 'application/soap+xml; charset=utf-8',
})
to this:
@response = client.call('MyAction',
soap_action: 'url address',
xml: xml_payload)
The error message says a lot less:
Savon::HTTPError - HTTP error (400):
So the header makes it a bit more descriptive. If I look at the headers generated by Savon, it looks like this:
SOAP request: https://URL_ENDPOINT
Content-Type: application/soap+xml; charset=utf-8, SOAPAction: "http://URL_ENDPOINT/MyAction", Content-Type: text/xml;charset=UTF-8, Content-Length: 2935
What headers are wrong? How do I debug/inspect it here?
I also tried to investigate this issue in Postman and got only this error message:
400 Bad Request - The request cannot be fulfilled due to bad syntax.
I also tried to validate the generated XML data I send to the server - and that's valid (verified on different validators).
How do I solve this problem?
Thank you
