[
https://issues.apache.org/jira/browse/DIRMINA-1169?focusedWorklogId=861856&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-861856
]
ASF GitHub Bot logged work on DIRMINA-1169:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 20/May/23 04:42
Start Date: 20/May/23 04:42
Worklog Time Spent: 10m
Work Description: elecharny commented on PR #35:
URL: https://github.com/apache/mina/pull/35#issuecomment-1555522769
Merged in 2.2.X
Issue Time Tracking
-------------------
Worklog Id: (was: 861856)
Time Spent: 1h 10m (was: 1h)
> BindException on Java >= 11 due to race condition in AbstractPollingIoAcceptor
> ------------------------------------------------------------------------------
>
> Key: DIRMINA-1169
> URL: https://issues.apache.org/jira/browse/DIRMINA-1169
> Project: MINA
> Issue Type: Bug
> Affects Versions: 2.0.23, 2.1.6, 2.2.1
> Reporter: Thomas Wolf
> Priority: Major
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> See also SSHD-1256.
> The main acceptor loop does basically (somewhat simplified):
> {code:java}
> while (selectable) {
> registerHandles(); // Process registration queue: add new sockets (from
> bind()) to the selector with OP_ACCEPT, fulfills their open futures
> int selected = select();
> if (/* nothing to do */) {
> break; // and end the thread; higher layers will create a new one if
> needed
> }
> if (selected > 0) {
> processHandles(selectedHandles()); // Handle and hand off new connections
> }
> unregisterHandles(); // Process cancel queue: cancel SelectionKey, close
> ServerSocketChannel, fulfill the cancel future
> }
> {code}
> With Java 11, unbinding a {{ServerSocketChannel}} changed:
> * [JDK-8214430|https://bugs.openjdk.org/browse/JDK-8214430]
> * [Java 11 Release
> Notes|https://www.oracle.com/java/technologies/javase/11-relnote-issues.html#JDK-8198562]
> Essentially the unbind gives up the socket only at the next {{select()}}
> call. This causes two problems in Apache MINA's acceptor:
> * The unbind future is set "done" before the socket is actually released.
> * If a new binding for one of the unbound sockets is registered before that
> {{select()}} has been done, {{registerHandles()}} gets a {{BindException}}
> ("address already in use").
> So for Java >= 11, the code must ensure that there is a {{select()}} between
> processing unbindings and processing new bindings, and the unbind futures
> must be set "done" only after that {{select()}}.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@mina.apache.org
For additional commands, e-mail: dev-h...@mina.apache.org
