[Info-vax] New OpenSSL update from HP

[David Froble]

Simon Clubley wrote:
> On 2015-06-15, David Froble <davef at tsoft-inc.com> wrote:
>> Ok, I've never written a web server, yet.  If I was to do so, I'd 
>> seriously look at detached processes rather than sub-processes.  Why? 
>> Because once you assign the worker process a task, perhaps you'd want it 
>> to complete, regardless of whatever the web server does.
>>
> 
> What happens if you need to shutdown/restart the web server and need
> to _guarantee_ that all related processes have terminated as part of
> of the shutdown process ?
> 
> Simon.
> 

Couple of issues there.

First, a worker process lifetime should be measured in fractions of a 
second, or a couple seconds at most.

The listener could keep track of the PIDs that it created, and a 
shutdown command could terminate them in the chosen manner.

That said, it's been my impression that web server transactions are 
stateless, (if I understand that term), and usually occur in a rather 
short time period, such as a fraction of a second.  Do you have examples 
of when a worker process would remain active for an extended period of 
time?  I'm curious.

All that written, while I've been implementing web services, I have 
little experience with web servers.