From: Axel Etzold <AEtzold@...>
Date: 2007-11-17T01:44:23+09:00
Subject: Re: Questions about TCPSocket


-------- Original-Nachricht --------
> Datum: Sat, 17 Nov 2007 00:05:11 +0900
> Von: "Robert Klemme" <shortcutter@googlemail.com>
> An: ruby-talk@ruby-lang.org
> Betreff: Re: Questions about TCPSocket

> 2007/11/16, Axel Etzold <AEtzold@gmx.de>:
> > Dear all,
> >
> > I am trying to use Ruby bindings of a software that does
> > computations by exchanging messages between competent code.
> > The details are explained here:
> >
> >
> http://www.math.kobe-u.ac.jp/OpenXM/1.2.1/html/OpenXM-en/OpenXM/node5.html
> >
> > This software can be used from the command line and there, it works as
> > expected.
> > Now, I'd like to use it from ruby. There are ruby binding scripts.
> > However, I encounter some problems when initialising
> > TCPSocket - I can't get any connection. Both ruby and OpenXM are
> > installed on the same computer.
> > What could be the problem ?
> 
> Posting an exception with stack trace often goes a long way to help
> people help you.  So I suggest you give that detail.
> 
> Generic answer would be: configuration issue, firewall, network issues...
> 
> Cheers
> 
> robert
> 
> -- 
> use.inject do |as, often| as.you_can - without end


Dear Robert,

thanks for your reply.
I now get

dhcppc0:/usr/local/openxm-head/OpenXM/src/ruby # ruby ox.rb
Connecting to localhost,
Trying to connect to controlport 1200,
Exception: Errno::ECONNREFUSED: Connection refused - connect(2)
        ox.rb:172:in `initialize'
        ox.rb:172:in `new'
        ox.rb:172:in `initialize'
        ox.rb:315:in `new'
        ox.rb:315

I tried to find some help in previous discussions, and was able to
identify some open ports, through which I can communicate.
Is there a way to change what ports are blocked from ruby, as root, on Linux ?

Thank you very much,

Axel
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