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hi,

I do not quite understand the output from David's mail, as the daemon in
this case does not seem to be sctpd, but sctpDeamon. I am not too sure which
daemon is this (if there is more than one), but the output from starting
that daemon is also unfamiliar to me.

That said, i would like to make a note that the developers of the the daemon
(sctpd) and its test programs in the sctplib have not tested them against
IPv6. Also, like what Michael said, there is no flow control in the IPC
between the daemon and the apps using it.

Besides the lack of flow control, the daemon has other missing features. One
would be that it does not do fragmentation and reassembly. The size of each
message sent should be 1400 (assuming MTU of 1500) bytes or less.

The original intention of the daemon was to allow multiple application to
make use of the sctplib on the same machine. So, running apps against a
remote daemon have not been tested.

hopes this helps.
wc


-----Original Message-----
From: Michael Tuexen
[mailto:Michael.Tuexen AT micmac.franken.de]
Sent: Samstag, 2. Februar 2002 21:05
To:
discussion AT sctp.de
Subject: Re: [SCTP-Discussion] SCTP daemon and sctp_test_app don't
connect remotely


Dear David,

I think the the sctpdlib is written in a way that te sctp_daemon runs
locally.
It 'replaces' a kernel implementation, which would run locally. So why do
you want to run it remotely?

Neverless, it should technically be possible to run the daemon remotely,
the
communication uses UDP. But it doesn't have flow control and that stuff.
Some comments from the sctpd developers?

Best regards
Michael

On Friday, February 1, 2002, at 10:35 PM, David Gordon (LMC) wrote:

> Hi,
>
> If I start SCTP daemon on a remote machine and try to connect with
> sctp_test_app, I'll get the output below. I noticed that if another SCTP
> daemon is running locally, sctp_test_app will automatically connect to
> it
> with source address 127.0.0.1.
>
> Is there a way I can test a remote SCTP connection with the example
> tools
> provided in the distribution?
>
> Thank you,
>
> David Gordon
> Ericsson Research
>
>
> Remote daemon
> -------------
> [root@sauternes linux]# ./sctpDeamon
> Added 3 extra for v6 total now 6
> Deamon finds 4 networks that it will work on
> IPv6 Address: fec0::1:250:b7ff:fe14:3617:0 scope:0
> IPv6 Address: fe80::250:b7ff:fe14:3617:0 scope:0
> IPv4 Address: 127.0.0.1:0
> IPv4 Address: 142.133.73.99:0
>
>
> Client
> ------
> [root@gaillac linux]# ./sctp_test_app -h 142.133.73.99
> My port is 32929
> Added 3 extra for v6 total now 6
> in to register with deamon
> No deamon, or deamon not responding!
> [root@gaillac linux]# ./sctp_test_app -6 fec0::1:250:b7ff:fe14:3617
> My port is 32929
> Added 3 extra for v6 total now 6
> in to register with deamon
> No deamon, or deamon not responding!
>
>
> If local SCTP daemon also, client connects
> ------------------------------------------
> [root@gaillac linux]# ./sctpDeamon
> Added 3 extra for v6 total now 6
> Deamon finds 4 networks that it will work on
> IPv6 Address: fec0::1:250:b7ff:fe14:35be:0 scope:0
> IPv6 Address: fe80::250:b7ff:fe14:35be:0 scope:0
> IPv4 Address: 127.0.0.1:0
> IPv4 Address: 142.133.73.103:0
> Got a register from IPv4 Address: 127.0.0.1:32930
>
>
> [root@gaillac linux]# ./sctp_test_app -h 142.133.73.99
> My port is 32931
> Added 3 extra for v6 total now 6
> in to register with deamon
> Got the response!!!
> Register fd[0]=3 of 1 event:1
> Routing adptor set to (0)|3
>>>> quit
>>>> Closing the fd 3
> [root@gaillac linux]#
>
>
>
>
> _______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion
>
>
Michael.Tuexen AT micmac.franken.de

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• RE: [SCTP-Discussion] SCTP daemon and sctp_test_app don't connect remotely, Sim Woon Chiat ICM CA MS MI E7 Extern, 02/04/2002
  • <Possible follow-up(s)>
  • RE: [SCTP-Discussion] SCTP daemon and sctp_test_app don't connect remotely, David Gordon (LMC), 02/06/2002

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