https://bz.apache.org/bugzilla/show_bug.cgi?id=62626

--- Comment #3 from Christopher Schultz <ch...@christopherschultz.net> ---
(In reply to jan.pfeifer from comment #2)
> It happens several times a day or even several times a hour.

At least it's reproducible, even if you can't guarantee a trigger.

> After latest crash i have found this (only relevant log output before crash):
> 
> Caused by: java.io.IOException: Unexpected error [120,001] writing data to
> the APR/native socket [975,220,944] with wrapper
> [org.apache.tomcat.util.net.AprEndpoint$AprSocketWrapper@1ce3e909:975220944].

That error code [120001] is:

   APR_UTIL_START_STATUS  (100000)
+     APR_OS_START_ERROR  ( 20000)
+        (os error code)  (     1)

The OS error code is, unhelpfully, "Operation not permitted", at least on *NIX.
I'm not sure how that maps to Windows, which usually has error codes with
negative values.

Are you maybe trying to write-back to a socket which should be closed?

Is this NIO+OpenSSL or APR+OpenSSL? I'm guessing APR+OpenSSL. Are you able to
try using NIO+JSSE or NIO+OpenSSL?

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