Headers corrupted when authenticating with HTTP basic authentication on a protected application
We have a IIS 8.5 (Windows Server 2012R2) ASP.NET application running behind LemonLDAP 1.9.0 configured as reverse proxy running on Ubuntu 12.04 and Apache 2.2. Logging into the app using basic authentication header, created by LemonLDAP, works perfectly. Only every POST request being sent by the client results in a HTTP 411 error, indicating the Content-Length header is missing. Everything works fine when disabling the LemonLDAP Handler. Disabling chunked-responses on Apache did not help either. IIS reports :
POST requests report missing Content-Length header (HTTP 411)
This seems to be a major issue in LemonLDAP Handler. We tested with version 1.4, which did not seem to have this issue. Please help! Thanks in advance & best regards, Barry Luijten