[openbeosnetteam] Re: Network stack question

  • From: Ivo Vachkov <ivo@xxxxxxxxxxx>
  • To: openbeosnetteam@xxxxxxxxxxxxx
  • Date: Wed, 27 Jun 2007 16:07:53 +0300

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Hugo Santos wrote:
> Hello Ivo,
>
> May i ask how you are planning on separating ICMP? Although ICMP

I actually hope not to separate ICMP code.

> sits on top of IP, it is an IPv4 specific control procotol. What i

Hmm, I'd say ICMP sits beside IP. It controls IP and TCP/UDP at the
same time.

> think would be interesting would be to define a set of standard
> error messages to propagate down the stack so IP would reply with
> an ICMP error to the source. For instance, "Port unreachable" to be
> used by UDP.

Where do you plan to define these messages (I mean where would you
want to implement them) ? At TCP/UDP ? I think it is most logical to
implement that kind of messages at ICMP and call whenever we need one
from other layers (TCP/UDP/IP).

> Hugo
>

/ipv
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