12-11-2011
I just ran a special test. I created a simple, single-thread Java app that just opens, closes, reopens, closes, and for a third time reopens and closes one of the ports, all in a single thread in one block of code. The port was able to be reopened. No issues. No "Device busy".
Therefore, two possibilities arise. One, perhaps I was mistaken in saying that I'm sure that my original application was releasing the port completely upon closing it. But I am sure this isn't so. The Java port object has no handle to my app and my app has no handle to the port object. Two, perhaps the thread which opens a port may reopen it, while other threads may not. Indeed, my app, at launch time, opens the ports in one thread which dies after opening them. The thread which closes and reopens them is a different thread. If Solaris disallows this whereas Windows does not, and no configuration change is possible, then I can perhaps redesign my Java code to accommodate Solaris. I will have to verify this with further testing.
If any of you have any insight on this, I will be very grateful.
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LEARN ABOUT OSX
net-server
NET-SERVER(1) User Contributed Perl Documentation NET-SERVER(1)
NAME
net-server - Base Net::Server starting module
SYNOPSIS
net-server [base type] [net server arguments]
net-server PreFork ipv '*'
net-server HTTP
net-server HTTP app foo.cgi
net-server HTTP app foo.cgi app /=bar.cgi
net-server HTTP port 8080 port 8443/ssl ipv '*' server_type PreFork --SSL_key_file=my.key --SSL_cert_file=my.crt access_log_file STDERR
DESCRIPTION
The net-server program gives a simple way to test out code and try port connection parameters. Though the running server can be robust
enough for full tim use, it is anticipated that this binary will just be used for basic testing of net-server ports, acting as a simple
echo server, or for running development scripts as CGI.
OPTIONS
"base type"
The very first argument may be a Net::Server flavor. This is given as shorthand for writing out server_type "ServerFlavor".
Additionally, this allows types such as HTTP and PSGI, which are not true Net::Server base types, to subclass other server types via an
additional server_type argument.
net-server PreFork
net-server HTTP # becomes a HTTP server in the Fork flavor
net-server HTTP server_type PreFork # preforking HTTP server
"port"
Port to bind upon. Default is 80 if running a HTTP server as root, 8080 if running a HTTP server as non-root, or 20203 otherwise.
Multiple value can be given for binding to multiple ports. All of the methods for specifying port attributes enumerated in Net::Server
and Net::Server::Proto are available here.
net-server port 20201
net-server port 20202
net-server port 20203/IPv6
"host"
Host to bind to. Default is *. Will bind to an IPv4 socket if an IPv4 address is given. Will bind to an IPv6 socket if an IPv6
address is given (requires installation of IO::Socket::INET6).
If a hostname is given and "ipv" is still set to 4, an IPv4 socket will be created. If a hostname is given and "ipv" is set to 6, an
IPv6 socket will be created. If a hostname is given and "ipv" is set to * (default), a lookup will be performed and any available IPv4
or IPv6 addresses will be bound. The "ipv" parameter can be set directly, or passed along in the port, or additionally can be passed
as part of the hostname.
net-server host localhost
net-server host localhost/IPv4
There are many more options available. Please see the Net::Server documentation.
AUTHOR
Paul Seamons <paul at seamons.com>
LICENSE
This package may be distributed under the terms of either the
GNU General Public License
or the
Perl Artistic License
perl v5.16.2 2012-06-12 NET-SERVER(1)