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https://issues.apache.org/jira/browse/DIRMINA-1172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17723102#comment-17723102
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Alexander B edited comment on DIRMINA-1172 at 6/20/23 6:58 PM:
---------------------------------------------------------------

Hi [~elecharny], did you already had the time to take a look deeper to the 
problem? 


was (Author: abuechel):
Hi, did you already had the time to take a look deeper to the problem?

> Multiple DatagramAcceptors and the creation of a session object
> ---------------------------------------------------------------
>
>                 Key: DIRMINA-1172
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-1172
>             Project: MINA
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.1.5
>            Reporter: Alexander B
>            Priority: Major
>         Attachments: UDPTest4.java
>
>
> Hello,
> I am using two independently created NioDatagramAcceptors, which are created 
> by the following code :
> {code:java}
> AbstractIoService inputSource = new NioDatagramAcceptor();
> ((NioDatagramAcceptor) inputSource).getSessionConfig().setReuseAddress(true);
> DefaultIoFilterChainBuilder filterChainBuilderUDP = 
> ((NioDatagramAcceptor)inputSource).getFilterChain();
> filterChainBuilderUDP.addLast("logger", new LoggingFilter());
> ((NioDatagramAcceptor) 
> inputSource).getSessionConfig().setIdleTime(IdleStatus.READER_IDLE, 
> getIdleTimeout());
> ((NioDatagramAcceptor) inputSource).setHandler(this);
> try {
>       ((NioDatagramAcceptor)inputSource).bind(new InetSocketAddress(port));
> } catch (IOException e) {
>       log.error("Failed to connect {}", e);
> }
> {code}
> One Acceptor is listening on port 9800, the other one on 9801. If I now send 
> UDP packages (from a external application) to both ports (independently). It 
> seems, that both UDP port are "connected" to the same session.
> Information: The external app is sending:
> Message "TEST_1 <timestamp>" just to port 9800
> Message "TEST_2 <timestamp>" just to port 9801
> The overwritten method messageReceived will give the following output:
> {code:java}
> public void messageReceived(IoSession session, Object message) throws 
> Exception {
>       String msgStr = message.toString();
>       log.info("SessionId:" + session.getId() + " " + msgStr);
> }
> {code}
> 2023-04-19_11:47:35.035 [NioDatagramAcceptor-2] INFO - SessionId:1 TEST_1 
> 1681904855701
> 2023-04-19_11:47:35.035 [NioDatagramAcceptor-3] INFO - SessionId:1 TEST_2 
> 1681904855701
> So, both messages (for port 9800 and port 9801) are received by SessionId1. 
> If I do exactly the same with `NioSocketConnector`, I can see two different 
> sessions, such that both messages are handled independently:
> 2023-04-19_11:44:35.725 [NioProcessor-11] INFO - SessionId:1 TEST_1 
> 1681904875701
> 2023-04-19_11:44:37.754 [NioProcessor-15] INFO - SessionId:2 TEST_2 
> 1681904875701
> Is there anything I did not mention in the context of UDP/DatagramAcceptor? 
> Or is there any setting, such that DatagramAcceptors can create/handle their 
> own session objects?



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