ERL-1325: Warning message when 'socket' sender is made to exit

[OTP-Maintainer]

Original reporter: essen
Affected version: OTP-23.0
Component: kernel
Migrated from: https://bugs.erlang.org/browse/ERL-1325

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The following snippet:
{code:java}
Pid = spawn(fun() -> {ok, S} = socket:open(inet, dgram, udp), [socket:sendto(S, <<0:8000>>, #{family => inet, port => 12345, addr => {232,0,1,1}}) || _ <- lists:seq(1,10000)] end), timer:sleep(100), exit(Pid, shutdown).
{code}
Produces the following message:
{code:java}
=WARNING MSG==== 04-Aug-2020::13:42:45.551079 ===
esock_stop_handle_current {-1}: Failed sending abort (closed) message to current writer <0.98.0>
{code}
The snippet is sending data over a multicast IP address but this is mostly to make sure it goes through the router as the message is probably related to the sender exiting while waiting for the reply inside socket:sendto.

I suppose this is a debug printout, especially since I can't seem to find it in my Common Test logs, only on the console. But it would be great to not have that printed in this scenario.

[OTP-Maintainer]

raimo said:

The intricate interactions between different parts of the NIF code have been reworked regarding socket stop, for the master branch.  I tried to reproduce this on master, but could not.

Can you reproduce this on master?

[OTP-Maintainer]

essen said:

Problem doesn't occur anymore with current master.