From: Eleanor McHugh <eleanor@...>
Date: 2009-03-12T10:18:00+09:00
Subject: Re: How to write packets on ethernet card..

On 11 Mar 2009, at 12:23, Brian Candler wrote:
> Stalin Thangaraj wrote:
>>          I want to write raw packets over the Ethernet card. I don't
>> how to do it in ruby. If anybody knows help me..
>
> First find out how to do it in C using the Unix sockets API. Suggested
> resource is "Unix Network Programming volume 1" by Richard Stevens,  
> pub
> Addison Wesley. Or you can find existing code which sends raw packets
> and reverse-engineer that. Ask questions on a kernel/networking  
> mailing
> list if you have problems.
>
> Once you know this, you can translate easily to Ruby, since ruby's
> Socket is a thin layer on top of this.
>
> Google "ruby socket" and the first hit is the socket documentation.  
> Also
> look in the sockets documentation at
> http://www.ruby-doc.org/books/ProgrammingRuby (click on "Network and  
> Web
> Libraries")

Follow the link in my sig and you'll find some presentations bursting  
with code for UDP and TCP network comms. These aren't raw packets in  
the fullest sense of the term but depending on your intent they may  
suffice.


Ellie

Eleanor McHugh
Games With Brains
http://slides.games-with-brains.net
----
raise ArgumentError unless @reality.responds_to? :reason