Description of problem: In commit 90b5ee52536c573227464260feb109fdb5b8a685 we filter only "good" headers. That was because wsgi bloat headers with a lot of garbage. But currently we only allow X-*, 'content-length', 'user-agent', 'content-type', 'range'. We should definitely allow other headers (like Last-Modified, If-Range...). In other words we should allow all headers from rfc2616. http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
Mass-aligning under space12, so that we don't lose track of this bugzilla. This however does not mean that we plan (will be able to) address this bug in Spacewalk 1.2.
Mass-moving to space13.
fixed in commit 4aca0eaac4c36bc18c4a2c3c6755b5fa8def388c
Moving ON_QA ...
This bug has been fixed in Spacewalk 1.3.