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 ?
Thank you very much,
Best regards,
Axel
require "socket"
<snip>
</snip>
class OXSession
def initialize(host = "localhost",
controlport = rand(20000)+1024,
dataport = controlport+1,
byteorder = 0) @serial = 0
begin
printf("Connecting to %s, \n", host)
printf("Trying to connect to controlport %d, \n", controlport) @controlp = TCPSocket.new(host, controlport)
sleep 2
printf("Trying to connect to dataport %d, \n", dataport) @datap = TCPSocket.new(host, dataport)
sleep 2
rescue
p 'could not connect'
end
# byte oder negotiation @byteorder = decide_byte_order(byteorder)
end
attr_accessor :controlp, :datap
def decide_byte_order(b_or_l)
if b_or_l == 0 @controlp.read(1) @datap.read(1) @controlp.flush @datap.flush @controlp.write(0) @datap.write(0)
return 0
end
end
end
<snip>
···
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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 ?
--
use.inject do |as, often| as.you_can - without end
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
> 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:
>
> Communication model of OpenXM
>
> 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 ?
Either there is nothing listening on that port or the firewall of your
or the target machine blocks the connection. If you are on Linux you
can most likely check with iptables or ip6tables. Chances are that
there is also a GUI tool for that.
> 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:
> >
> >
> Communication model of OpenXM
> >
> > 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 ?
--
use.inject do |as, often| as.you_can - without end