[asterisk-bugs] [JIRA] (ASTERISK-29948) iostream: Infinite TCP timeout writing data

N A (JIRA) noreply at issues.asterisk.org
Thu Mar 3 18:53:07 CST 2022 

N A created ASTERISK-29948:
------------------------------

             Summary: 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


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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