[
https://issues.apache.org/jira/browse/PROTON-2931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18080916#comment-18080916
]
ASF GitHub Bot commented on PROTON-2931:
----------------------------------------
cliffjansen commented on code in PR #444:
URL: https://github.com/apache/qpid-proton/pull/444#discussion_r3242487640
##########
c/src/proactor/epoll.c:
##########
@@ -1464,6 +1469,7 @@ static void connection_lookup_done_lh(pconnection_t *pc,
struct addrinfo *ai, in
static void connection_done_cb(void *user_data, struct addrinfo *ai, int
gai_error) {
pconnection_t *pc = (pconnection_t *)user_data;
lock(&pc->task.mutex);
+ pc->name_lookup_pending = false;
Review Comment:
done
> Epoll proactor has race conditions with the async c-ares name resolver library
> ------------------------------------------------------------------------------
>
> Key: PROTON-2931
> URL: https://issues.apache.org/jira/browse/PROTON-2931
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-c
> Affects Versions: proton-c-0.41.0
> Reporter: Clifford Jansen
> Assignee: Clifford Jansen
> Priority: Blocker
>
> If the c-ares callback is very quick, the pn_raw_connection_t can sometimes
> fail to schedule itself and hang while still in the connecting phase. This
> can be easily reproduced with a ulimit for open files of 1024 or less and the
> following reproducer.
> https://github.com/fgiorgetti/router-locust
> Conversely, if the callback is extremely slow, the connection can wind up and
> free resources before the callback tries to reference through an invalid
> pointer. The connection should remember if a callback is pending and defer
> any cleanup until this concludes. This applies to raw and AMQP connections.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
