monit over apache reverse proxy and remote proxy to ssl destination host

Question

I need to setup monit to communicate over a proxy to a mmonit host with ssl:

mmonit => http://mmonit.com/

monit => http://mmonit.com/monit/

• the mmonit host only accepts https requests with HTTP basic authentication
• monit can not natively use proxying (only via apache reverse proxy)
• the remote proxy uses authentication "Proxy-Authorization"

monit -> local reverse proxy (apache) -> remote proxy with auth -> mmonit[https]

this config is working now (without https/SSL):

## Monit Config
# mmonit authentication (will be bypassed as HTTP Header "Authorization" by the proxy...)
set mmonit http://user:password@localhost:8080/    

## Apache VHost Config
<VirtualHost localhost:8080>
  ServerName www.example.org

  ProxyRemote * http://proxy.example.org:80
  ProxyPass / http://mmonit.example.org:80/collector/
  ProxyPassReverse / http://mmonit.example.org:80/collector/

  # Proxy authentication string base64 encoded
  RequestHeader set Proxy-Authorization "Basic dXNlcjpwYXNzd29yZA==" 
</VirtualHost>

 

this config is NOT working (with https/SSL):

## Monit Config
# mmonit authentication (will be bypassed as HTTP Header "Authorization" by the proxy...)
set mmonit https://user:password@localhost:443/    

## Apache VHost Config
<VirtualHost localhost:443>
  ServerName www.example.org

  SSLProxyEngine On

  ProxyRemote * http://proxy.example.org:80
  ProxyPass / https://mmonit.example.org:443/collector/
  ProxyPassReverse / https://mmonit.example.org:443/collector/

  # Proxy authentication string base64 encoded
  RequestHeader set Proxy-Authorization "Basic dXNlcjpwYXNzd29yZA==" 
</VirtualHost>

there is no problem by using wget to access https links with the remote proxy, even if the remote proxy doesn't use https => proxy.example.org:80 [http]

how can I get this with https/SSL to work? =/