Re: stop trapd serivce on windows timeout?

Hello Huy,

Are you aware that WSACancelBlockingCall() has been removed from Winsock 2,
and that Net-SNMP needs Winsock 2 in order to support IPv6 ? See also
http://msdn.microsoft.com/en-us/library/ms741547%28VS.85%29.aspx. So two
possible solutions are:
* Add a Windows-specific alarm to snmptrapd that is triggered e.g. once per
second. This will limit the timeout argument of select(). See also the
documentation of snmp_alarm_register() on
http://www.net-snmp.org/dev/agent/group__snmp__alarm.html.
* Or, more elegant, use a socket pair to let select() return when a service
stop is requested. A socket pair can be created by calling
create_winpipe_transport() (see also snmplib/winpipe.c). The read end of the
socket pair can be registered for use in the select() call by calling
register_readfd().

Bart.

On Mon, May 24, 2010 at 6:31 AM, Snmp Nmcsnmp <[email protected]> wrote:

> On windows XP service pack 3 it does not seem to stop in a timely manner.
> If I put in the call WSACancelBlockingCall() then it break out fine. I will
> test it on several version of windows and will broadcast what I learn from
> it.
> thanks,
> Huy
>
>  ------------------------------
> *From:* Bart Van Assche <[email protected]>
> *To:* Snmp Nmcsnmp <[email protected]>
> *Cc:* [email protected]
> *Sent:* Sat, May 22, 2010 3:44:07 AM
>
> *Subject:* Re: stop trapd serivce on windows timeout?
>
> Hello Huy,
>
> The Win32 snmptrapd calls closesocket() on the UDP socket(s) owned by
> snmptrapd to make select() stop. While this seems to work with some Windows
> versions (e.g. Windows XP), this is undocumented Winsock behavior. So
> whether or not this works may depend on the Windows version. On which
> Windows version did you observe this behavior ?
>

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