Re: Nsock unconnected sockets

[Kris Katterjohn <katterjohn () gmail com>]

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On 10/09/2010 06:25 PM, David Fifield wrote:
> On Tue, Oct 05, 2010 at 04:37:54PM -0700, David Fifield wrote:
> > On Mon, Oct 04, 2010 at 11:01:50PM -0500, Kris Katterjohn wrote:
> > > On 10/04/2010 10:18 PM, David Fifield wrote:
> > > > Another thing to consider is that at least one function, bind, needs to
> > > > be called before the socket is connected.
> > >
> > > Sorry, but I'm not sure how this would be an issue.
> > >
> > > new_socket("tcp")
> > > bind("192.168.10.69", 31337)
> > > connect("192.168.10.1", 80)
> > >
> > > and
> > >
> > > new_socket("udp")
> > > bind("192.168.10.69", 31337)
> > > sendto("192.168.10.1", 53, "stuff")
> > >
> > > How would these not work?  I suspect something may have to be moved around,
> > > but are these really not possible?
> >
> > You're right, this is a better interface. I'll see what's needed to make
> > it work.
>
> This is what I've implemented now. new_socket works the way it always
> has, except that you can optionally declare a protocol and address
> family.
>
> s = nmap.new_socket("udp")
>
> The iod isn't created at this point. The address family and protocol are
> just cached for later. You can connect it as before. If you try to do an
> operation such as a send or receive without first connecting, an iod is
> created on demand using the information you provided to new_socket.
>
> s:bind(nil, 888)
> s:receive()
> s:sendto("1.2.3.4", 888, data)
>
> If you connect with a different protocol, it overrides whatever you set
> earlier. The third argument to connect is optional if it's what you
> already set in new_socket.

Cool.  I've been gone all weekend, but now at first consideration this sounds
good.  Thanks for looking into my suggestions.

> David Fifield

Cheers,
Kris Katterjohn

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