Re: UDP Broadcast self send
Re: UDP Broadcast self send
- Subject: Re: UDP Broadcast self send
- From: Eli Green <email@hidden>
- Date: Thu, 11 Sep 2003 14:43:24 -0400
>
Hmm,
>
one more of these reasons why I never digged down the ISO Networking
>
Pyramid.. (Yes, the 256 was to avoid trouble in case of ..)
>
>
Afai-know it behaved correct to me.
>
While the machine can resolve the 127 Address before the Ethernet
>
interface (it does not get down to the wires at all); The machine has to
>
try to send on the 255 Address, which will fail if there is no cable in
>
the ethernet port, which results in a no send cause of missing wires to
>
go.
>
>
I dont remember off my haed if it worked then, but what I remember is
>
that in my App which UDP B'casts also the sendto() failed if the stated
>
IP in the sockaddr was invalid (also the 255 which bounced at the
>
ethernet port with no wire in it).
>
I assumed that it does not work cause the port or mach itself was
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intelligent enough to fail if there is /no/ other IP device on the cable
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or no cable at all. Even if you could go and say that a B'cast has no
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transaction completition in any way - but that does not cut off errs
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before the wires.
>
>
rgds, Hado
>
>
Anyhow, with BSD finally I was able to write all the stuff I still don't
>
get in OT...
I have no idea what I've done, but it appears to be working now. The problem
I'm having now is trying to run the app in MacOS 9 gives me an error when I
try to create an endpoint.
After this line:
bcast = OTOpenEndpointInContext(otcfg, 0, &bcast_info, &err, otcxt);
err is set to -3201, which is either kENOENTErr (No such file or directory -
unlikely) or kOTNotFoundErr (OT generic not found error); neither of these
help me very much. Has anybody seen this before? I was able to create an
Endpoint for listening to the right port, so I don't understand why it would
fail the second time. Do I need to clone my configuration every time, or can
I keep using the same one?
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