Does anyone plan to develop the feature of openssl' OCSP stapling?

Rob Stradling rob.stradling at
Mon Mar 12 10:12:02 UTC 2012

"As to OCSP, I'm going to implement it in the next 2.0 version."

Igor, is this still your plan?
If so, do you have a (very rough) ETA for nginx v2.0?
(I don't see v2.0 mentioned here:

Or are there any other regular nginx developers who could work on OCSP 

Or is it worth me having a go at writing a patch?


On 16/06/11 16:02, Igor Sysoev wrote:
> On Thu, Jun 16, 2011 at 02:30:55PM +0100, Rob Stradling wrote:
>> On November 25, 2010 04:42AM Weibin Yao wrote:
>>> Hi everyone,
>>> I think the the feature of OCSP stapling[1] is very useful for the
>>> browser blocked by the OCSP request. And the feature has supported since
>>> openssl 0.9.8g. Apache's mod_ssl has also added this patch in the
>>> development branch[2].
>>> Does anyone have the plan to develop this feature?
>> Hi.  The CAs and Browsers represented in the CA/Browser Forum
>> ( are growing increasingly interested in
>> encouraging wider adoption of OCSP Stapling.
>> Since nobody else has replied to this thread, I presume that OCSP Stapling is
>> not currently a priority for the core nginx developers.  So, I've started
>> having a go at writing a patch.  I'm basing it heavily on Dr Steve Henson's
>> OCSP Stapling code that was first included in Apache httpd 2.3.3 [3].  I'd like
>> to ask a few questions before I proceed any further:
>>    1. If I am able to complete my patch, are you likely to review/commit it?
>> Or is OCSP Stapling the sort of feature that you'd prefer to only let a core
>> nginx developer work on?
>>    2. I was under the impression that nginx started life as a fork of Apache
>> httpd, but I don't see any messages along the lines of "This product includes
>> software developed by the Apache Group..." in the source code.  Is nginx 100%
>> *not* a derivative work of Apache httpd?
>>    3. Steve Henson's code is presumably licensed under ASL 2.0 [4], which
>> presumably means that my patch would be classed as a "Derivative Work" subject
>> to various conditions (see the "4. Redistribution" section in ASL 2.0).  Would
>> this prevent you from accepting it?
>> (Since ASL 2.0 says "nothing herein shall supersede or modify the terms of any
>> separate license agreement you may have executed with Licensor regarding such
>> Contributions", perhaps I should ask Steve Henson if he would be willing to
>> contribute the same code to nginx under a different licence).
> nginx is not Apache fork. I know well enough Apache 1.3 and I've got some
> ideas from Apache such as memory pools, configuration methods, processing
> phases, etc., but there is no line of Apache code. As to OCSP, I'm going
> to implement it in the next 2.0 version.

Rob Stradling
Senior Research & Development Scientist
COMODO - Creating Trust Online
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