I have a CentOS box running Apache 2.2.3 and compression is working fine on HTTP connections, with the relevant information being logged to a separate deflate log. However, no information is being logged for HTTPS connections. I believe this is because the compression is being negotiated at the SSL layer but I'm not completely certain.
Compression over HTTPS has been tested and verified using information from this site, so I know it's working. Of course that test doesn't really tell me anything useful about how well compression is working or for which browsers. As the site in question has no static content it's not easily tested without using a browser, so just faking user agent strings won't help much.
Is there a way I can get information about compression logged for HTTPS connections?