Re: synchronous versus asynchronous

There is an example async app on the net-snmp page.

http://net-snmp.sourceforge.net/tuto...yncapp/asyncap
p.c

I used this code to figure out how to perform
asynchronous sends in my own project.

Mathew Bielejeski
http://www.neon.com

Message: 1
Date: Tue, 14 Nov 2006 21:11:48 +0100
From: Alef Veld <alef@xs4all.nl>
Subject: Re: synchronous versus asynchronous
To: Steve Friedl <steve@unixwiz.net>
Cc: net-snmp-coders@lists.sourceforge.net
Message-ID: <FD505C79-8F7D-4EF7-8D88-A2A6DACE3219@xs4all.nl>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

So basically if i understand correctly async is using select with
nonblocking sockets and a large set of file descriptors? I assume you
use that since you stated that net-snmp is not thread-safe. And in
addition you just send a whole bunch of udp sendto's in a event loop?

that's really something i would like to have. basically i want to
write a function that does async snmp and in that same function it
calculates the netblock it needs to snmp to by supplying a net/prefix
as argument.

However, i feel really stupid when looking at the net-snmp library or
even example code. It seems bloody complicated :-). I'm now using a
modified version of the sync demo app to use with snmpv1 (Seems to
work for snmpv2 to?) but as stated before, it sucks up cpu bigtime if
it finds a host who it cannot connect to.

Greets, and thanks,
Alef
On Nov 14, 2006, at 7:53 PM, Steve Friedl wrote:




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