sap/xi/engine?type=entry what are other parameters

Hello,

Please tell me where can i find the list of parameters for this Engine Service( you can see this engine service in SICF where to see the code)

I am able to connect to ECC system via SOAP receiver using this url via http

i am also able to connect to ECC via https by https://sapq2029.XXX.YYY:443/sap/xi/engine?type=entry 

but i have to use load balancer which is q97web

http://Q97web.XXX.YYY:443/sap/xi/engine?type=entry  works

but https://Q97web.XXX.YYY:443/sap/xi/engine?type=entry  doesnt work can you help me knowing why...?

Things i found

1) The type H RFC Destination Q97_PROXYSERVER is not enabled for Https

2) The Engine service in SICF is not enabled for SSL

3)The java system property for XPIAdapter:xi .isconfigurl is configured for "http" in NWA

also

i am able to access Abap webservices configured in SOAMANAGER of ECC Q97 by WS Receiver adapter by https://q93web.XXX.YYY/sap/bc/srtetc

i think that the Engine service not enabled for SSL might be a reason.

Please help.

Regards

Vinay