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Subject: Re: Http2UpgradeHandler error
Reply-To: Tomcat Users List <users@tomcat.apache.org>
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 <44b91193-7e5d-c695-fdfb-4c8fea8af578@apache.org>
To: Tomcat Users List <users@tomcat.apache.org>
From: Mark Thomas <markt@apache.org>
Message-ID: <17771d9b-d315-d545-e44e-6693cd35dd48@apache.org>
Date: Tue, 21 Jun 2016 14:01:14 +0100
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archived-at: Tue, 21 Jun 2016 13:01:21 -0000

On 21/06/2016 13:43, Mark Thomas wrote:

> I'll take a look at the code and see if I can figure out how this is
> happening. Are you able to build 8.5.x from source to test any changes I
> might make?

I have a theory which can be proved/disproved with some extra logging.

First, please add the following line to logging.properties and then restart.
org.apache.tomcat.util.net.AprEndpoint.level = FINE

Re-create the problem and then look for the following in the logs. Where
you see {n} in the message below, it will be replaced by some value.

An APR general error was returned by the SSL read operation on
APR/native socket [{0}] with wrapper [{1}]. It will be treated as EAGAIN
and the socket returned to the poller.


Do you see messages like this in the logs?

Mark

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