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Hi Ilknur,

see my comments in-line.

Best regards
Michael

On Mar 29, 2005, at 0:55 Uhr, Ilknur Aydin wrote:

Hi Michael,

I have not used the developer version of Andreas, so I might not be right
here:
- test_tool might not be the program you want to use. Use combined_server
or echo_server as a server and terminal as a client.

yes, as "root" , I first I ran "sctpd" and then echo_server and terminal. And these programs worked together this way. But if I run them as a user w/o root previliges they can not start I get the error:

Connect failed: Permission denied
sctp_initLibrary(): Unknown error in Adaptation-module (maybe IPC file /tmp/s.sct not removed).

Hmm. You should not need to run the sctp programs with root privileges, only
the sctpd needs them.

I check the source code for echo_server and terminal programs, they both include sctp_wrapper.h instead of ua.h. As far as I understand this means the programs do not connect to the sctpd but instead try opening sockets themselves using SCTP_xxx library calls.

I do not know. One could do it by just linking the programs against a different
lib then the sctplib. Let us call it the sctpdlib. This lib would provide the
same API as the sctplib and therefore even sctp_wrapper.[ch] could be used.
Please note that sctp_wrapper.[ch] just wraps the sctp_* functions and does
some simple error handling for the examples programs.

how do I make user programs run as un-previleged users and connect/use sctpd library calls?

I would guess that you link against a different library, but Andreas knows...

Another question: in case I am OK to run programs as root and use sctplib functions as in sample programs echo_server, terminal, will there be any crucial problems in operating programs with sctplib ??

You have to disable OOTB handling.

- do not rely (too much) on documentation. Use the source code of the
implementation and of the examples to see how things work. Sometimes
you have the time to update the code but you forgot / have not the time
to update the documentation.

ok..

- regarding the link to get the version: it might be right, it is not
'officially released/tested/supported'. Possibly Andreas has continued
to develop it...

Since the version run on Linux only and I currently do not have the time
to port it to BSD, you have to ask Andreas for support. Or is anyone else
jumping in?

I need to run linux kernel 2.4.40, not BSD.

I'm not using Linux, so you can not get support from me. To run it on
Mac OS X, basically, I have to port it to it, which means port it
to BSDland.

But yes, I will ask Andreas for support questions then. Should I continue posting such emails to the discussion list as well ??


Thanks,
ilknur

On Mar 28, 2005, at 19:29 Uhr, Ilknur Aydin wrote:

Hi,
ooops! later, I noticed that there is sctplib/sctp/asconf.c and .h files. Also, in echo_server.c file there are "path_added", "asconf_succeded" type of states in networkStatusChangeNotif() and hence add-ip is supported.
I run "echo_server" and "terminal" programs locally
./echo_server -V -s 127.0.0.1
./terminal -d 127.0.0.1 -r 7 -V -l 10002
and activated/de-activated eth0 and saw PATH ADDED/DELETED and ASCONF SUCCEEDED statements :).
but the questions 1 and 2 below still exist.
regards,
ilknur
On Mon, 28 Mar 2005, Ilknur Aydin wrote:

Hello:
I need to run sctplib1.3.1 with add-ip support.
I checked announce AT sctp.de list archives, saw the announcement message
http://www.sctp.de/pipermail/announce/2004-August/000042.html
and hence downloaded sctplib1.3.1 from the link
http://www.exp-math.uni-essen.de/~ajung/src/sctplib-1.3.1.tar.gz
I un-tar sctplib1.3.1 and followed the instructions in README and README.sctpd and used commands:
./configure
make
make install
to built sctplib1.3.1 and then I started "sctpd" with root permissions.
I ran one of the sample programs "daytime_server" as server UA and "test_tool" with a script as the client UA (User Application) on the same machine. It seems they worked together.
BUT I start checking the documents under sctplib/manual/ directory. In the manual sctpdlib-doc.pdf titled "SCTP daemons' User Application Guidelines: using the sctpdlib" it says a UA should include "sctpdlib/ua.h" and mentions a directory "sctpd_programs" (for sample programs that uses sctpd). However, I could not find where is ua.h and sctd_programs directory.
Also, I checked the programs under sctplib/programs, they do not include ua.h and they use SCTP library calls (for instance SCTP_initLibrary()) instead of sctpd function calls (sctpd_initLibrary()).
Also, I could not find signs in the source files, sample programs, or documents that add-ip is suported in this snapshot and if so how I could use it.
So,
(1) I am wondering if the link above is the correct place to get sctplib1.3.1 ? May be it is but I did not built it correctly that is why I do not have ua.h and sctpd_programs ?? (BTW, I built sctplib1.3.1 under linux kernel 2.4.20.)
(2) Or may be the documentation coming with this release is not consistent ? But then how to make sure that programs really use/communicate sctp library via sctpd central daemon ?
thanks & regards,
ilknur

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• [SCTP-Discussion] Re: sctplib-1.3.1 and add-ip, Michael Tuexen, 03/29/2005
  • Message not available
    • [SCTP-Discussion] Re: sctplib-1.3.1 and add-ip, Michael Tuexen, 03/29/2005
      • [SCTP-Discussion] Re: sctplib-1.3.1 and add-ip, Ilknur Aydin, 03/30/2005
        • [SCTP-Discussion] Re: sctplib-1.3.1 and add-ip, Michael Tuexen, 03/30/2005
  • <Possible follow-up(s)>
  • [SCTP-Discussion] Re: sctplib-1.3.1 and add-ip, Ilknur Aydin, 03/31/2005

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