Till Toenshoff created MESOS-9911:
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Summary: SSL socket error logging can be improved.
Key: MESOS-9911
URL: https://issues.apache.org/jira/browse/MESOS-9911
Project: Mesos
Issue Type: Bug
Affects Versions: 1.9.0
Reporter: Till Toenshoff
While debugging some unrelated linkage problem, I noticed the following error
output;
{noformat}
16:19:25 I0728 16:19:25.323794 26188 libevent_ssl_socket.cpp:1244] Socket
error: error:00000005:lib(0):func(0):DH lib
{noformat}
The error message appears not very helpful and that we can improve on.
When receiving a libevent openssl-error, we do not check the error code but
pass it on to openssl for retrieving an error string -- this is not ideal
considering that openssl does signal more;
The error code 5, which actually means {{SSL_ERROR_SYSCALL}} does hint that we
should now check {{errno}} for more information on the problem. We should only
ever invoke openssl's error string generator when we did receive a
{{SSL_ERROR_SSL}}.
Also see
http://openssl.6102.n7.nabble.com/SSL-read-return-1-error-00000005-lib-0-func-0-DH-lib-tp27612p27613.html
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