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Top Forums Shell Programming and Scripting Is my Socket Free or Listening Post 302971981 by mohtashims on Wednesday 27th of April 2016 06:02:49 PM
Old 04-27-2016
Is my Socket Free or Listening

Hi,

Code:
bash-3.2$ uname -a
Linux mymac 2.6.18-409.el5 #1 SMP Fri Feb 12 06:37:28 EST 2016 x86_64 x86_64 x86_64 GNU/Linux

bash-3.2$ telnet 10.12.228.40 13900
Trying 10.12.228.40...
telnet: connect to address 10.12.228.40: Connection refused
bash-3.2$ telnet 10.12.228.40 23900
Trying 10.12.228.40...
Connected to 10.12.228.40.
Escape character is '^]'.
Connection closed by foreign host.

bash-3.2$ telnet 10.12.228.40 24000
Trying 10.12.228.40...
telnet: connect to address 10.12.228.40: Connection refused

This makes me believe 10.12.228.40 24000 is free for use.

But when i start a process on that socket 10.12.228.40 24000 it fails saying
Code:
The address 10.12.228.40 might be incorrect or another process is using port 24000: java.net.BindException: Cannot assign requested address

Please explain.

Last edited by Corona688; 04-27-2016 at 07:14 PM..
 

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Regexp::Common::URI::telnet(3pm)			User Contributed Perl Documentation			  Regexp::Common::URI::telnet(3pm)

NAME
Regexp::Common::URI::telnet -- Returns a pattern for telnet URIs. SYNOPSIS
use Regexp::Common qw /URI/; while (<>) { /$RE{URI}{telnet}/ and print "Contains a telnet URI. "; } DESCRIPTION
$RE{URI}{telnet} Returns a pattern that matches telnet URIs, as defined by RFC 1738. Telnet URIs have the form: "telnet:" "//" [ user [ ":" password ] "@" ] host [ ":" port ] [ "/" ] Under "{-keep}", the following are returned: $1 The complete URI. $2 The scheme. $3 The username:password combo, or just the username if there is no password. $4 The username, if given. $5 The password, if given. $6 The host:port combo, or just the host if there's no port. $7 The host. $8 The port, if given. $9 The trailing slash, if any. REFERENCES
[RFC 1738] Berners-Lee, Tim, Masinter, L., McCahill, M.: Uniform Resource Locators (URL). December 1994. SEE ALSO
Regexp::Common::URI for other supported URIs. AUTHOR
Damian Conway (damian@conway.org) MAINTAINANCE
This package is maintained by Abigail (regexp-common@abigail.be). BUGS AND IRRITATIONS
Bound to be plenty. LICENSE and COPYRIGHT This software is Copyright (c) 2001 - 2009, Damian Conway and Abigail. This module is free software, and maybe used under any of the following licenses: 1) The Perl Artistic License. See the file COPYRIGHT.AL. 2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2. 3) The BSD Licence. See the file COPYRIGHT.BSD. 4) The MIT Licence. See the file COPYRIGHT.MIT. perl v5.14.2 2010-02-23 Regexp::Common::URI::telnet(3pm)
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