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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPASYNC-85) ZeroCopyConsumer Hangs on SSL Download
Date Wed, 26 Nov 2014 09:24:13 GMT

    [ https://issues.apache.org/jira/browse/HTTPASYNC-85?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14225948#comment-14225948

Oleg Kalnichevski commented on HTTPASYNC-85:

Problems that I am unable to reproduce locally are generally have low likelihood of being
resolved. So, a test app that could be used to reproduce the issue outside of your environment
would be really nice.

Could you also please do these things for me?
(1) Upgrade HttpCore dependency to version 4.3.3. HttpAsyncClient 4.0.2 ships with HttpCore
(2) After upgrade could you please try to reproduce the issue with wire / context logging
on [1]?
(3) Attach the log file to this issue.


[1] http://hc.apache.org/httpcomponents-client-4.3.x/logging.html

> ZeroCopyConsumer Hangs on SSL Download
> --------------------------------------
>                 Key: HTTPASYNC-85
>                 URL: https://issues.apache.org/jira/browse/HTTPASYNC-85
>             Project: HttpComponents HttpAsyncClient
>          Issue Type: Bug
>    Affects Versions: 4.0.2
>         Environment: 2.6.18-398.el5 #1 SMP Tue Aug 12 06:26:17 EDT 2014 x86_64 GNU/Linux
> Red Hat Enterprise Linux Server release 5.11 (Tikanga)
> java version "1.7.0_55"
> Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
> Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)
>            Reporter: Charles Barber
>         Attachments: DemoSSLHang.zip
> When using the ZeroCopyConsumer class, but only when the target server is accessed over
TLS, certain requests will result in it hanging indefinitely (until the other side resets
the connection or the client times out), or for a couple minutes and then continue.
> This happens consistently against a .Net server in one of our partner's environments.
I've also seen it when accessing a WebLogic 11g server, but with that, it will resume on its
own after a couple minutes. I cannot reproduce it with a Jetty server.
> If I set up stunnel to do the TLS, and run exactly the same requests over plain text
HTTP, we experience no issues. This is in fact our production workaround.
> Also, using the basic in-memory consumer (over TLS) works fine. I also wrote a simple
async consumer that reads from the decoder to an array-based byte buffer and then writes to
a file, and that works fine.
> Interestingly, I have another custom async consumer that we use for streaming back out
to the original client, while HTTP Async Client is running in a servlet 3.1 container, and
that hangs just like the ZeroCopyConsumer does (but again, no issue over plain text HTTP).
> I'll attach a client that can reproduce the error; unfortunately I can't provide the
servers in question.

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