[Mono-list] Unable to use raw sockets...

[Giuseppe Greco]

Hi all,

I'm unable to use raw sockets with Mono. I've
written a small sniffer for test purposes,
and I always get the following error message:

  Unhandled Exception: System.Net.Sockets.SocketException:
  Network subsystem is down in (unmanaged)
  /usr/local/lib/libmono.so.0(mono_raise_exception+0x1b) [0xc0b817]
  in (unmanaged) /usr/local/lib/libmono.so.0 [0xc2683d]
  in <0x00054> System.Net.Sockets.Socket:.ctor
    (System.Net.Sockets.AddressFamily,System.Net.Sockets.SocketType,
      System.Net.Sockets.ProtocolType)

The code fragment that causes the exception above is

    Socket socket = new Socket(
      AddressFamily.InterNetwork,
      SocketType.Raw, // doesn't work!!!
      ProtocolType.IP);

Attached to this you will find a tarball that contains the
full source code... just build and try it as superuser!

Note that the attached code works fine on M$ Windows.

Any idea? Are raw sockets already supported by Mono?

Thanks,
j3d

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Giuseppe Greco

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socket.tar.gz
Description: application/compressed-tar