Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Mon, 11 Mar 2013 16:56:56 +0000

> The osi/os/WIN32/osdSock.c file could easily be changed to use getaddrinfo() 
> instead of gethostbyaddr() and getnameinfo() instead of gethostbyname().  Do 
> you know when Microsoft introduced the newer routines?  Would making this 
< change prevent EPICS from running on some older versions of Windows?

According to this document the minimum Windows version is Windows 2000, which I believe means that it won't run on Windows NT, but it will run on XP, Vista, Windows 7 and Windows 8.
http://msdn.microsoft.com/en-us/library/windows/desktop/ms738520(v=vs.85).aspx

I doubt if anyone is running EPICS on NT?

Mark

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Andrew Johnson
Sent: Monday, March 11, 2013 11:45 AM
To: [email protected]
Cc: Eric Norum
Subject: Re: gethostbyname and getaddrinfo - multiple DNS entries for a hostname

Hi,

On 2013-03-11 Eric Norum wrote:
> Right -- we'd have to copy the existing posix/osdSock.c from posix/ to
> RTEMS/ before making the getaddrinfo change to posix/osdSock.c.

This is starting to sound more like a 3.15-level change now, since it's going 
to affect multiple architectures.  I confirmed Michael's observation that 
getaddrinfo() is not provided in RTEMS 4.9.2.

On 2013-03-11 Mark Rivers wrote:
> I checked an getaddrinfo also appears to be present on Windows.  If this
>  adds useful functionality then should it also be changed in the Windows
>  OSI code?

I suspect that unless you're suffering the same issues that Matt reported this 
wouldn't really make any difference.  I don't think it really adds any 
functionality other than apparently checking local host names before or as 
well as the DNS, although on Linux the older APIs are now documented as being 
obsolete.

The osi/os/WIN32/osdSock.c file could easily be changed to use getaddrinfo() 
instead of gethostbyaddr() and getnameinfo() instead of gethostbyname().  Do 
you know when Microsoft introduced the newer routines?  Would making this 
change prevent EPICS from running on some older versions of Windows?

- Andrew
-- 
There is no such thing as a free lunch.  When invited for lunch,
it is best to check if you are there to eat, or to be eaten.
-- Clive Robinson

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System