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https://issues.apache.org/jira/browse/FTPSERVER-292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12700120#action_12700120
]
Francis De Brabandere edited comment on FTPSERVER-292 at 4/17/09 3:53 AM:
--------------------------------------------------------------------------
temporary solution: add this code just before starting up your server
{code}
/**
* Throws an exception if we can connect to the port.
* There is a problem on windows that makes two servers can be started
on the same port:
*
http://www.mail-archive.com/[email protected]/msg00749.html
* @throws FtpException
*/
private void checkForOtherServer(final int port) throws FtpException{
Socket sock = null;
try {
sock = new Socket();
sock.bind(null);
sock.connect(new InetSocketAddress("localhost", port),
200);
throw new FtpException("An other server is running on
port "+port);
} catch (UnknownHostException e) {
throw new FtpException(e.getMessage(), e);
} catch (IOException e) {
logger.debug("No other server running.");
} finally {
if(sock != null){
try {
sock.close();
} catch (IOException e) {
logger.warn("Could not close test
socket");
}
}
}
}
was (Author: francisdb):
temporary solution: add this code just before starting up your server
[<pre>
/**
* Throws an exception if we can connect to the port.
* There is a problem on windows that makes two servers can be started
on the same port:
*
http://www.mail-archive.com/[email protected]/msg00749.html
* @throws FtpException
*/
private void checkForOtherServer(final int port) throws FtpException{
Socket sock = null;
try {
sock = new Socket();
sock.bind(null);
sock.connect(new InetSocketAddress("localhost", port),
200);
throw new FtpException("An other server is running on
port "+port);
} catch (UnknownHostException e) {
throw new FtpException(e.getMessage(), e);
} catch (IOException e) {
logger.debug("No other server running.");
} finally {
if(sock != null){
try {
sock.close();
} catch (IOException e) {
logger.warn("Could not close test
socket");
}
}
}
}
</pre>
> Starting two servers on the same port should fail
> -------------------------------------------------
>
> Key: FTPSERVER-292
> URL: https://issues.apache.org/jira/browse/FTPSERVER-292
> Project: FtpServer
> Issue Type: Improvement
> Environment: windows xp
> Reporter: Francis De Brabandere
>
> see this thread:
> http://www.mail-archive.com/[email protected]/msg00749.html
> I start up a ftp server in my unit tests. But I want to make sure
> there is only one instance running on a port, starting a second server
> on the same port should fail (throw an exception).
> Right now the second server starts up without errors but making a
> connection to the port used gives me the first server...
> =quote=
> Windows has a weird (or wrong)
> treatment of SO_REUSEADDR. You can read more about it here:
> http://msdn.microsoft.com/en-us/library/ms740621(VS.85).aspx
> This has been discussed here before, but with no good resolution. One
> possibility is that we could make our use of SO_REUSEADDR
> configurable.
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