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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0003376||Doomseeker||[All Projects] Bug||public||2018-02-18 18:44||2018-10-27 22:53|
|Target Version||1.2||Fixed in Version||1.2|
|Summary||0003376: Domain names look ups get the process stuck when quitting during look up.|
|Description||Domain names look ups get the process stuck when quitting during look up.|
We already have a workaround for this, but a workaround is a workaround and it doesn't solve the same problem when caused by QAbstractSocket::connectToHost().
The proper solution for this is to "delete QApplication" before returning from main().
|Steps To Reproduce||1. Reverse commithttps://bitbucket.org/Doomseeker/doomseeker/commits/fb1f296bfbcffe767f3c4e6bda16ff9c5f0c6b95 [^]|
2. Look up a domain name that will take long to resolve. Non-existent domain name like "lolcathost" is good for this.
3. During look up, quit Doomseeker.
4. Notice that the process never ends.
|Additional Information||Minimal example with explanation when "stuck" happens can be found here:https://bitbucket.org/zalewa/dotfiles/src/5c2545284971ae6924fd42466041e37d8913336b/dev/qt/hostlookup/?at=default [^]|
See comment in main.cpp, main() function, line 83.
Two changes, second is indirectly dependent on the first:
1. "delete QApplication instance" added in this commit:https://bitbucket.org/Doomseeker/doomseeker/commits/3cabc2fba79f3f787e6e46f4c3fdb612b50eb1d5 [^]
2. LookupHost workaround removed and replaced with proper QHostInfo::lookupHost() here:https://bitbucket.org/Doomseeker/doomseeker/commits/75080a1a29cb749489dabcbe1ad89a4148d20fce [^]
Program should be now tested for any case where the process gets stuck running forever on quit.
|Not sure if related, but something like described is still experienced on OpenBSD 6.4-current. Needs testing (especially on that operating system), for sure.|
edited on: 2018-09-29 16:10
Could this also be related to 0003494?
This was an hang on exit, I'm not sure how that's related to no traffic being sent?
In any case you an disable the hostname lookups in the options.
|Probably still needs to be reviewed/tested why OpenBSD 6.4-current hangs on exit in a virtual machine, but not for intox8907 on bare metal (assumed).|
Since OpenBSD has some other weird networking problems with Qt5 and Doomseeker and intox8907 couldn't reproduce the issue, and I can't reproduce the issue in this ticket with Qt 5.11 on Debian GNU/Linux, I guess this is resolved.
I agree the patches by Zalewa are correct.
This issue is already marked as resolved.
If you feel that is not the case, please reopen it and explain why.
|Supporters:||No one explicitly supports this issue yet.|
|Opponents:||No one explicitly opposes this issue yet.|
|2018-02-18 18:44||Zalewa||New Issue|
|2018-02-18 18:44||Zalewa||Relationship added||related to 0003287|
|2018-02-18 18:44||Zalewa||Assigned To||=> Zalewa|
|2018-02-18 18:44||Zalewa||Status||new => assigned|
|2018-02-18 19:05||Zalewa||Note Added: 0019072|
|2018-02-18 19:05||Zalewa||Status||assigned => needs testing|
|2018-09-29 15:14||WubTheCaptain||Target Version||=> 1.2|
|2018-09-29 15:15||WubTheCaptain||Note Added: 0019822|
|2018-09-29 16:10||WubTheCaptain||Note Added: 0019830|
|2018-09-29 16:10||WubTheCaptain||Note Edited: 0019830||View Revisions|
|2018-10-01 03:37||WubTheCaptain||Status||needs testing => feedback|
|2018-10-01 04:13||Blzut3||Note Added: 0019851|
|2018-10-02 05:47||WubTheCaptain||Note Added: 0019880|
|2018-10-02 05:47||WubTheCaptain||Status||feedback => needs review|
|2018-10-02 19:26||Zalewa||Assigned To||Zalewa =>|
|2018-10-09 10:36||WubTheCaptain||Note Added: 0020051|
|2018-10-09 10:36||WubTheCaptain||Status||needs review => resolved|
|2018-10-09 10:36||WubTheCaptain||Fixed in Version||=> 1.2|
|2018-10-09 10:36||WubTheCaptain||Resolution||open => fixed|
|2018-10-09 10:36||WubTheCaptain||Assigned To||=> Zalewa|
|2018-10-27 22:53||WubTheCaptain||Status||resolved => closed|
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