Re: Questions about Gnat.sockets and raw socket

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On Thu, 23 Apr 2015 08:41:50 -0700 (PDT), loïc maury wrote:

> Le jeudi 23 avril 2015 14:52:45 UTC+2, loïc maury a écrit :
>> Le jeudi 23 avril 2015 14:19:04 UTC+2, Dmitry A. Kazakov a écrit :
>>> On Thu, 23 Apr 2015 02:21:00 -0700 (PDT), loďc maury wrote:
>>> 
>>> > For a personal project, I want to create a packet analyzer.
>>> > Can I use Gnat.socket, for raw socket programming ? it is not clear
>>> > for me, and unfortunately I didn't found any answers in the ada groups.
>>> > 
>>> > I will use it under Windows.
>>> 
>>> The short answer is no, it would not go.
>>> 
>>> Windows does not support raw sockets (naturally GNAT.Sockets does not do
>>> either). Under Windows you will need a so-called NDIS driver to handle
>>> packets away of the network stack, and Ada bindings to.
>>> 
>>> I can recommend an inexpensive NDIS driver we are successfully using under
>>> Windows:
>>> 
>>>    http://www.rawether.net
>>> 
>>> We also have Windows bindings to it, but they are proprietary.
>>> 
>>> P.S. Under Linux you would use raw sockets. GNAT.Sockets does not support
>>> them, but it is relatively simple to adapt.
>>> 
>> Maybe NDIS open source project exist, I will try to find one.
>> 
> Maybe I found a solution, with Winpcap, I can create a binding for this
> library.

Winpcap is not free, only its run-time is. But you will also need the SDK,
which is five times as expensive as rawether, last time we checked.

If you have much spare time and a MSDN subscription (1K per annual) you can
take a sample NDIS from Windows DDK and use it as a starting point. 

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de