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[SCTP-Discussion] Re: Would you explain sctp socket program


Chronological Thread 
  • From: Thomas Dreibholz <dreibh AT exp-math.uni-essen.de>
  • To: yoonsuk AT ccmc.knu.ac.kr
  • Cc: discussion AT sctp.de
  • Subject: [SCTP-Discussion] Re: Would you explain sctp socket program
  • Date: Mon Apr 22 11:02:00 2002
  • List-id: SCTP Discussions <discussion.sctp.de>
  • Organization: University of Essen, Institute for Experimental Mathematics

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Am Freitag, 19. April 2002 23:33 schrieben Sie:
> Hellow, my name is choi yoonsuk.
> I'm in kyungpook national university of South Korea.
> I've recently studied SCTP.
> I have several questions about your sctp program.
> I installed sctplib-1.0.0-pre17 and tested socket programs.
>
> I used the sctpmultiserver as a server process and
> the sctptftp as a client process. But, it didn't work.
> The error message is "Connecting... failed! ERROR: Unable to connect to
> remote address!" and
client didn't connect and send any message to
> server.
> I debuged it and error is occured in establishing new association in
> /sctplib/socketapi/sctpsocket.cc file.
I can't figure out why it happens.
> Maybe I mistake something.
> Would you explain what happen to me and advise anything?
> Thank you for your time.

There is a bug (receiver window + large fragments) preventing the SFTP
transfer of files longer than about 32K in older versions of the example
programs. The transfer will simply block. The newest version which will be
available within the next few days contains a correction.

To solve the connection failure problem:
- - Have you given the correct address to sctpsftp, including the port number?
Example: 1.2.3.4:sftp or 1.2.3.4:69 (69 = port of SFTP).
- - What are the local adresses of client and server? Check the programs'
output whether or not these values are correctly omitted from the
configuration of your systems. Also try to set them manually using the
- -local=<Address> parameter.


Best regards
- --
=======================================================================
Dipl.-Inform. Thomas Dreibholz

University of Essen, Room ES210
Inst. for Experimental Mathematics Ellernstraße 29
Computer Networking Technology Group D-45326 Essen/Germany
- -----------------------------------------------------------------------
E-Mail:
dreibh AT exp-math.uni-essen.de
Homepage: http://www.exp-math.uni-essen.de/~dreibh
=======================================================================

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