[asterisk-bugs] [JIRA] (ASTERISK-29948) iostream: Infinite TCP timeout writing data
N A (JIRA)
noreply at issues.asterisk.org
Mon Apr 25 17:10:40 CDT 2022
[ https://issues.asterisk.org/jira/browse/ASTERISK-29948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=258881#comment-258881 ]
N A edited comment on ASTERISK-29948 at 4/25/22 5:09 PM:
---------------------------------------------------------
Sorry for the delay on this one.
Backtrace attached.
After I fire up an improperly terminated expect script series, it only takes a few minutes to get this issue going.
Once present, the issue persists until Asterisk is restarted.
If I do a ps -aux and grep for the PHP scripts that are invoking the AMI connections, I see that indeed there are several scripts running.
This is the output of "manager show connected":
flash is a script that should run 24/7 via supervisorctl to process AMI events via callback functions.
The recentchange connections are all the problematic ones. If they don't terminate cleanly, then this causes TCP in Asterisk to completely blow up.
So, external AMI connections can bring an Asterisk system to its knees (as far as TCP is concerned) whenever they want.
{noformat}
voip*CLI> manager show connected
Username IP Address Start Elapsed FileDes HttpCnt Read Write
flash 127.0.0.1 1650906039 18386 31 0 263426 04099
recentchange 127.0.0.1 1650922165 2260 370 0 2147483647 2147483647
recentchange 127.0.0.1 1650923797 628 244 0 2147483647 2147483647
recentchange 127.0.0.1 1650924347 78 22 0 2147483647 2147483647
recentchange 127.0.0.1 1650924353 72 27 0 2147483647 2147483647
recentchange 127.0.0.1 1650924353 72 85 0 2147483647 2147483647
recentchange 127.0.0.1 1650924356 69 238 0 2147483647 2147483647
recentchange 127.0.0.1 1650924358 67 242 0 2147483647 2147483647
recentchange 127.0.0.1 1650924358 67 243 0 2147483647 2147483647
recentchange 127.0.0.1 1650924374 51 277 0 2147483647 2147483647
recentchange 127.0.0.1 1650924380 45 294 0 2147483647 2147483647
recentchange 127.0.0.1 1650924411 14 293 0 2147483647 2147483647
12 users connected.
{noformat}
was (Author: interlinked):
Sorry for the delay on this one.
Backtrace attached.
After I fire up an improperly terminated expect script series, it only takes a few minutes to get this issue going.
Once present, the issue persists until Asterisk is restarted.
If I do a ps -aux and grep for the PHP scripts that are invoking the AMI connections, I see that indeed there are several scripts running.
This is the output of "manager show connected":
{noformat}
voip*CLI> manager show connected
Username IP Address Start Elapsed FileDes HttpCnt Read Write
flash 127.0.0.1 1650906039 18386 31 0 263426 04099
recentchange 127.0.0.1 1650922165 2260 370 0 2147483647 2147483647
recentchange 127.0.0.1 1650923797 628 244 0 2147483647 2147483647
recentchange 127.0.0.1 1650924347 78 22 0 2147483647 2147483647
recentchange 127.0.0.1 1650924353 72 27 0 2147483647 2147483647
recentchange 127.0.0.1 1650924353 72 85 0 2147483647 2147483647
recentchange 127.0.0.1 1650924356 69 238 0 2147483647 2147483647
recentchange 127.0.0.1 1650924358 67 242 0 2147483647 2147483647
recentchange 127.0.0.1 1650924358 67 243 0 2147483647 2147483647
recentchange 127.0.0.1 1650924374 51 277 0 2147483647 2147483647
recentchange 127.0.0.1 1650924380 45 294 0 2147483647 2147483647
recentchange 127.0.0.1 1650924411 14 293 0 2147483647 2147483647
12 users connected.
{noformat}
> iostream: Infinite TCP timeout writing data
> -------------------------------------------
>
> Key: ASTERISK-29948
> URL: https://issues.asterisk.org/jira/browse/ASTERISK-29948
> Project: Asterisk
> Issue Type: Bug
> Security Level: None
> Components: Core/General, Core/Netsock
> Affects Versions: 18.9.0
> Reporter: N A
> Attachments: ctbtpry4gq.txt
>
>
> I've noticed that my calls to open a new AMI connection can get blocked and hang forever.
> Whenever this happens, if I do "core set debug 1", I can see that there seems to be an infinite loop of TCP failures:
> {noformat}
> [2022-03-04 00:48:00] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[1328]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[991]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[2345]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[1672]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[32735]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[474]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[2017]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[32410]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[2345]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[32735]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[991]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[1672]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[474]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[2017]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[1328]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[32410]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[32735]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[991]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[1672]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[474]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[2017]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[2345]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[1328]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:00] DEBUG[32410]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:01] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30181]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28196]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26872]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27008]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29701]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26256]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[26079]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27154]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[29234]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[30691]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27061]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[31373]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27662]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[28753]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> [2022-03-04 00:48:02] DEBUG[27092]: iostream.c:484 ast_iostream_write: TCP timeout writing data
> {noformat}
> The only fix I've come up with is to completely restart Asterisk.
> It does not matter if there are any calls; this happens even on a system idle of calls.
> In this last particular case, these TCP warnings came back less than an hour after Asterisk had been running.
> While these are not warnings, it does mean something is wrong in this case as there are hundreds of each of these *per second*, and AMI is blocked forever for new connections (and possibly existing ones too).
> Seems like Asterisk can get into a funny state where TCP has broken down and then the system is basically unusable for AMI until it is restarted.
> However, no obvious impact to call process or anything like that - this seems to only break, as the errors suggest, TCP connections like AMI.
--
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