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From: "Craig A. Berry" <craigberry@nospam.mac.com>
Newsgroups: comp.os.vms
Subject: Re: Apache + mod_php performance
Date: Wed, 2 Oct 2024 17:14:49 -0500
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On 10/2/24 2:38 PM, Dan Cross wrote:

> There's some chatter that suggests Unix domain sockets were
> added in OpenVMS 8.4, in 2010: 14 years ago:
> https://de.openvms.org/TUD2011/Unix_Portability_Updates_and_Open_Source.pdf
> 
> I haven't checked myself; even if the basic Unix domain sockets
> mechanism was added for IPC, it's not clear if the access rights
> transfer functionality was also implemented.

Last I heard the domain sockets were just an emulation, implemented in
terms of loopback AF_INET sockets.  The most annoying limitation of the
implementation that I remember was that you had to define logical names
in the system table to tell it what ports to use:

$ define/system TCPIP$AF_UNIX_MIN_PORT 1000
$ define/system TCPIP$AF_UNIX_MAX_PORT 5000


SCM_RIGHTS _is_ defined in socket.h, but that may not mean much.