ECP SP returns no xml but text/html

[Nate Klingenstein]

Tim,

SAMLtest, at least, does complain about receiving either:

shibd_warn.log.9:2018-12-17 15:29:37 WARN OpenSAML.MessageDecoder.SAML2ECP [737] [default]: ignoring incorrect content type (text/xml)
shibd_warn.log.9:2018-11-03 19:57:48 WARN OpenSAML.MessageDecoder.SAML2ECP [474] [default]: ignoring incorrect content type (application/x-www-form-urlencoded)

People are creative:

shibd_warn.log.1:2019-07-11 06:17:31 WARN OpenSAML.MessageDecoder.SAML2ECP [6530] [default]: ignoring incorrect content type ()
shibd_warn.log.9:2018-11-03 19:55:35 WARN OpenSAML.MessageDecoder.SAML2ECP [473] [default]: ignoring incorrect content type (multipart/form-data; boundary=----WebKitFormBoundaryckt4kT6hnpz7M0wZ)
shibd_warn.log.4:2019-01-09 21:59:56 WARN Shibboleth.SessionInitiator.SAML2 [266] [default]: unable to locate metadata for provider (https://redacted.com:443/am/Consumer/ECP/)

The default that comes out of the Shibboleth IdP is:

Content-Type: text/xml;charset=UTF-8

You might try that.

Take care,
Nate.