Re: Re: [Libevent-users] Assert fail in evhttp_connection_fail_ with req=0x00 on error=EVREQ_HTTP_TIMEOUT at http.c:691

[gerkenjohannes@xxxxxx]

I'm using the "master" from github.

The problem only occurs, when I set a timeout/retry for an https connection(to an server with port 443 closed). The segfault/assert-fail occurs, if I use EVENT_BASE_FLAG_EPOLL_USE_CHANGELIST in combination with the timeouts/retrys.

Testcase:
add the following to sample/https-client.c

struct timeval retry_timeout;
retry_timeout.tv_sec=5;
retry_timeout.tv_usec=0;
evhttp_connection_set_timeout(evcon,15);
evhttp_connection_set_retries(evcon,3);
evhttp_connection_set_initial_retry_tv(evcon,&retry_timeout);

execute: https_client -url https://libevent.org

output:

[warn] Epoll ADD(1) on fd 6 failed.  Old events were 0; read change was 1 (add); write change was 0 (none); close change was 0 (none): Bad file descriptor
[debug] event_add: event: 0x25a5b30 (fd 6),  EV_WRITE  EV_TIMEOUT call 0x7f1942897ae4
[warn] Epoll ADD(4) on fd 6 failed.  Old events were 0; read change was 0 (none); write change was 1 (add); close change was 0 (none): Bad file descriptor
[debug] event_process_active: event_callback 0x25a5c40, closure 3, call 0x7f1941fc8879
some request failed - no idea which one though!
socket error = Bad file descriptor (9)
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Gesendet:ÂDonnerstag, 04. September 2014 um 09:44 Uhr
Von:Â"Azat Khuzhin" <a3at.mail@xxxxxxxxx>
An:Âlibevent-users@xxxxxxxxxxxxx
Cc:Âlibevent-users@xxxxxxxx
Betreff:ÂRe: [Libevent-users] Assert fail in evhttp_connection_fail_ with req=0x00 on error=EVREQ_HTTP_TIMEOUT at http.c:691
On Fri, Aug 29, 2014 at 06:30:26PM +0200, gerkenjohannes@xxxxxx wrote:
> Hi,
>
> when I add new evhttp requests to an running event_loop, I get "epoll ADD: Bad file descriptor" and later "SIGABRT".
> The event_base is running in an seperate worker thread, the main thread is doing the evhttp_make_request.
>
> Output from GDB:
> http://paste.ubuntu.com/8176676/[http://paste.ubuntu.com/8176676/]
>
> Output from GDB with libevent debugging on:
> http://paste.ubuntu.com/8176681/[http://paste.ubuntu.com/8176681/]
>
> I get the assert fail in the folowing 2 cases:
>
> case 1:
> 1. add new requests to the running event_base
>
> case 2:
> 1. call loop_brake from the main thread
> 2. wait for the loop to "brake" in the worker thread
> 3. put the worker thread to sleep
> 4. add new requests
> 5. wake up the worker thread
> 6. run the event_loop
>
> Is this bug in libevent or my code?

Which version of libevent do you have?
Could you produce simple program or regress test for http (inside
libevent), to test it?

>
> Best regards,
> ***********************************************************************
> To unsubscribe, send an e-mail to majordomo@xxxxxxxxxxxxx with
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--
Respectfully
Azat Khuzhin
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