From: Konrad Meyer <konrad@...>
Date: 2007-08-11T08:02:48+09:00
Subject: Re: ARP Ping and ICMP in Ruby?

--nextPart2506670.Lt7uc5MZgO
Content-Type: text/plain;
  charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

On Friday 10 August 2007 03:20:19 pm Klodus Klodus wrote:
> Ruby Rubyruby wrote:
> > What would I have to do in order to be able to send an ARP Ping or a
> > regular ICMP_ECHO_REQUEST in Ruby?  Is it possible?
>=20
> require 'ping'
>=20
> Ping.pingecho('example.com')

Unfortunately, this isn't a 'ICMP_ECHO_REQUEST', it's an attempt to connect
to the remote machine on the 'echo' port. If the connection is refused or
allowed, pingecho() returns true. If it times out, or otherwise errors,
it returns false. Either way, it's not ICMP if you *need* ICMP.

> or
>=20
> system('ping -c1 www.example.com')

Shelling out to a ping command is probably a bad idea for portability
reasons.

If a TCP connection test works for you then go with the stdlib Ping library.
If it doesn't, you might look into RubyInline or writing a simple C
extension for basic ICMP requests.

Cheers!
=2D-=20
Konrad Meyer <konrad@tylerc.org> http://konrad.sobertillnoon.com/

--nextPart2506670.Lt7uc5MZgO
Content-Type: application/pgp-signature; name=signature.asc 
Content-Description: This is a digitally signed message part.

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)

iD8DBQBGvO6UCHB0oCiR2cwRApTYAJ9vgCas3q2oE3hLiI0Efk8wEeCmHwCgua9h
MVkR6DS9m47oB53mCkSqrUg=
=ffS7
-----END PGP SIGNATURE-----

--nextPart2506670.Lt7uc5MZgO--