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content-class:	urn:content-classes:message
Subject:	RE: Raw Socket support using Cygwin.
MIME-Version:	1.0
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Date:	Fri, 23 Mar 2001 12:08:43 +1100
Message-ID:	<EA18B9FA0FE4194AA2B4CDB91F73C0EF02E294@itdomain002.itdomain.net.au>
Thread-Topic:	Raw Socket support using Cygwin.
Thread-Index:	AcCzNLmWb6XCK3qBQfygxAw1UqdU1wAAJXhw
From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	"Prabhune, Abhijeet" <APrabhun AT ciena DOT com>, <cygwin AT cygwin DOT com>
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id UAA17415

 
 

> -----Original Message-----
> From: Prabhune, Abhijeet [mailto:APrabhun AT ciena DOT com]
> Sent: Friday, March 23, 2001 12:07 PM
> To: 'cygwin-apps AT cygwin DOT com'
> Cc: 'cygwin-developers AT cygwin DOT com'
> Subject: Raw Socket support using Cygwin.
> 
> 
> Hi,
> I am developing a program which requires Raw Ip Sockets on 
> Windows NT 4.0
> I know that Winsock2 provided by Microsoft does not provide 
> this support.
> Also Cygwin library is built on top of Winsock, so it 
> probably does not
> provide this? 

Correct

>However I see that Cygwin has tweaked certain 
> parts to provide
> more complete unix like functionality e.g. select() call.
> Hence the question, does Cygwin support raw ip socket option? 
> Looking at the
> code I have (version 1.1.8) I don't think so? Has anyone 
> tried to use this?

Possibly, but without cygwin support they won't get very far.

> Has anyone contributed to cygwin for raw ip socket support? 
> Is it possible
> to incorporate this?
> If yes can someone give me some pointers to start tweaking 
> cygwin so as to
> get raw Ip support from NT, maybe by directly accessing IP 
> interface of NT.
> 
> Thanks,
> Abhijeet.
> 

This would be an excellent contribution to make to cygwin...

Your best bet is to look at libnet for win32, which can insert arbitrary
packets. I think it uses an intermediary network driver to achieve this.
What would be really neat would be if interfaces to that driver were
added to cygwin1.dll. 

Rob

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