I have a legacy application which is reached on tcp port 7000.
The connection is normally handled by inetd launching a shellscript with all the right arguments to start this app.
And I thought an easy way to test different arguments without inflicting production use would be to simply write a perl script doing:

1. use IPC::Open2
2. start the app with open2(), thereby grabbing its STDIN/STDOUT
3. communicating with the app through the handles I got from open2

Well, I was overly optimistic. It seems it can not be accomplished that way. My perl script just hangs on, waiting...

The applications is using 0x0D as input (and output) record separator. So I have changed $/ to that. I have also asked for autoflush:
select $writer;
$|++;
But no.

For what it is worth: When I try connecting through a ssh connection I can communicate with the application. I am on Solaris 10, if that matters.

Am I missing something obvious?
Or should this commanl line connection be done in a different way?
Or is it not even possible?

Thanks in advance for your insights,
/L

In reply to Networking without a network by Anonymous Monk

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