Oracle HTTP Server SSL Renegotiation Does Not Work When Using the POST Method (Doc ID 435553.1)

Last updated on APRIL 13, 2016

Applies to:

Oracle HTTP Server - Version: 1.0.2 to 11.1.1.0.0 - Release: 9iAS to Oracle11g
Information in this document applies to any platform.

Symptoms

Oracle HTTP Server is SSL enabled and all accesses to the site are via HTTPS. The objective is to configure certain URIs to require SSL Client Authentication e.g

<Location /sslclient>
SSLVerifyClient require
</Location>

When anyone accesses "/sslclient", HTTP Server asks the browser to authenticate with a client certificate
Accessing "/ssclient" with a GET request causes no problem
Accessing "/ssclient" with a POST request returns a "HTTP-405 Method Not Supported" response to the browser
The $ORACLE_HOME/Apache/Apache/logs/error_log and ssl_engine_log shows

[error] mod_ossl: SSL Re-negotiation in conjunction with POST method not supported!
[error] mod_ossl: SSL Re-negotiation in conjunction with POST method not supported!

If you are using Oracle HTTP Server (Apache 2.x) you could see a more ambiguous error message e.g

Sun Jan 10 13:22:55 2010] [info] Inter-Process Session Cache: request=GET status=FOUND id=3E47E774F9926421D04D0D639D3B70AE (session reuse)
[Sun Jan 10 13:22:55 2010] [info] Initial (No.1) HTTPS request received for child 4 (server ias.server:443)
[Sun Jan 10 13:22:55 2010] [info] Requesting connection re-negotiation
[Sun Jan 10 13:22:55 2010] [debug] ssl_engine_kernel.c(826): Changed client verification type will force renegotiation
[Sun Jan 10 13:22:58 2010] [error] SSL re-negotiation failed, nzos_Handshake returned 28861
[Sun Jan 10 13:22:58 2010] [error] NZ Library Error: Unknown error

Cause

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