ProxyPass to a HTTPS URL or Proxy Requests Via RewriteRule to a HTTPS URL Fail with HTTP 502 on Windows Environments

(Doc ID 1198264.1)

Last updated on FEBRUARY 16, 2017

Applies to:

Oracle HTTP Server - Version to [Release AS10gR2 to AS10gR3]
Microsoft Windows (32-bit)
Checked for relevance on 03-Jan-2014


In an HTTP Server of an  Application Server environment on Windows 2003, using a RewriteRule or ProxyPass to proxy requests to the WebCache/OHS HTTPS port fails with a NZ 29024 error and the request is not possible.

This is an example of the configuration which can fail:

RewriteRule ^/myapplication/$ https://myremotehost:port/app1[L,P]


ProxyPass /myapplication https://myremotehost:port/app1
ProxyPassReverse /myapplication https://myremotehost:port/app1

This is an excerpt from the <ORACLE_HOME>\Apache\Apache\logs\error_log file:

[Wed Jan 13 10:45:08 2010] [error] mod_ossl: SSL call to NZ function nzos_Handshake failed with error 29024
[Wed Jan 13 10:45:08 2010] [error] mod_ossl: Invalid X509 certificate chain [Hint: the client probably doesn't provide a valid client certificate]
[Wed Jan 13 10:45:08 2010] [error] mod_ossl: SSL proxy connect failed!

If the RewriteRule is not proxied (i.e. the RewriteRule has not the [P] flag) and has the redirect [R] flag is used instead the request is proxied fine.

The problem can be reproduced on Application Server 10.1.2 and 10.1.3 but just on Microsoft Windows platforms.


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