Re: Doubt about Syncronization of GPS SPECTRACOM(2)

Rick Jones wrote:
Windows doesn't support it until Vista (but then I'm only adding
transport support for IPv6 for Windows now)! And you will see this with
older platforms. We had to emulate getaddrinfo() for older platforms.

Sounds like stuffing those checks into the emulation of getaddrinfo()
and then supporting AI_ADDRINFO to the main code would be a good thing -
that way when someone uses the ntp code as an example they will be
seeing goodness :)

You're right about that except that the getaddrinfo() emulation code
will never support IPv6. getaddrinfo() was designed to support both IPv4
and IPv6 but if you don't have the function in your library on your
system it's reasonable to only assume IPv4. If you look carefully, it
basically translates into a gethostbyname() wich can only handle IPv4
anyway. So why bother?

On the other hand adding it into the code to force the real code to
check if possible would be useful since people have systems set up that
can support IPv6 but didn't set up the infrastructure on the machine so
there are no IPv6 interface addresses but it can retrieve an IPv6
address as a result of the lookup.


Are you looking at doing performance testing for NTP like you've done
for BIND?

Hadn't really thought about it - didn't think that NTP had performance
issues. I suppose if folks think it important something could be added
to netperf4 (which I cannot recall if it uses AI_ADDRCONFIG or not :)


I know of no performance issues with NTP even when I try and bang it
hard for testing purposes.

http://www.netperf.org/svn/netperf4/trunk

althought there is also the place where I'm trying to "GObjectify" things:

http://www.netperf.org/svn/netperf4/branches/gobject_migration

rick jones
BTW, since I'm not subscribed to questions@xxxxxxxxxxxxxxxxx those folks
only see stuff in the replies :)


We have a two-way gateway between questions and cptn so everyone sees
everything...

Danny
_______________________________________________
questions mailing list
questions@xxxxxxxxxxxxxxxxx
https://lists.ntp.isc.org/mailman/listinfo/questions

.

Relevant Pages

  • Re: ntpd IPv6 support on Windows?
    ... with this since we need to support people without IPv6 support and don't ... including support for the Windows 2000 IPv6 ... Quoting from their getaddrinfo documentation at ...
    (comp.protocols.time.ntp)
  • Re: ntpd IPv6 support on Windows?
    ... with this since we need to support people without IPv6 support and don't ... including support for the Windows 2000 IPv6 ... Quoting from their getaddrinfo documentation at ...
    (comp.protocols.time.ntp)
  • Re: ntpd IPv6 support on Windows?
    ... with this since we need to support people without IPv6 support and don't ... including support for the Windows 2000 IPv6 ... Quoting from their getaddrinfo documentation at ...
    (comp.protocols.time.ntp)
  • Re: Doubt about Syncronization of GPS SPECTRACOM(2)
    ... I lit up a couple of Vistae here and they immediately found each other with IPv6. ... transport support for IPv6 for Windows now)! ... We had to emulate getaddrinfo() for older platforms. ... getaddrinfowas designed to support both IPv4 ...
    (comp.protocols.time.ntp)
  • Re: PLUS FEATURE SET.
    ... BGP ... BGP 4 Multipath Support ... IPv6 Access Services: AAA Support for Cisco VSA IPv6 Attributes ... OSPF ABR type 3 LSA Filtering ...
    (comp.dcom.sys.cisco)