It is my experience that SSL termination at a reverse proxy/load balancer is still fine in 8.52 for online use, but not for Integration Broker SSL secure services. For example, PeopleSoft Test Framework uses SSL encrypted web services. Integration Broker verifies that the incoming request is SSL. If it is NOT, then it throws an error and stops processing. Online usage, however (/psp/, /psc/, and /cs/) have all been fine for me with SSL termination at the reverse proxy/load balancer (httpd).
Be sure to enable 'WebLogic Plugin Enabled' parameter (this is necessary for WebLogic 10.3.4 and higher). Do this as follows:
a. Log into WebLogic console (using url http://machine-name:port#/console/)
b. Click 'Lock & Edit' button on top left page
c. From left menu, choose Environment -> Servers
d. Click the 'PIA' hyperlink on right menu.
e. Go to tab 'Configuration' and sub-tab 'General'
f. At bottom of page, click the 'Advanced' hyperlink
g. Check box next to 'WebLogic Plug-In Enabled
h. Save change
i. Click 'Activate Changes' button on top left page