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https://issues.apache.org/jira/browse/HTTPCORE-606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16951167#comment-16951167
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Oleg Kalnichevski commented on HTTPCORE-606:
--------------------------------------------
[~rhashimoto] I am not sure I understand what it is exactly you are trying to
do, given that your {{AsyncEntityProducer}} looks intentionally broken by
always returning zero from {{#available}} method.
One can use logging handlers from the testing module for i/o and protocol event
logging with Log4j2 [1]. One could also build something very similar with any
logging framework of their choice.
Oleg
[1]
https://github.com/apache/httpcomponents-core/tree/master/httpcore5-testing/src/main/java/org/apache/hc/core5/testing/nio
> HTTP2 framing layer error with HttpCore 5.0 server
> --------------------------------------------------
>
> Key: HTTPCORE-606
> URL: https://issues.apache.org/jira/browse/HTTPCORE-606
> Project: HttpComponents HttpCore
> Issue Type: Bug
> Components: HttpCore
> Affects Versions: 5.0-beta9
> Reporter: Roy Hashimoto
> Priority: Major
> Attachments: ConscryptTest.java
>
>
> The attached file implements a simple H2/TLS server that returns a roughly 64
> KB response. Things work fine when HTTP1 is used but with HTTP2 a framing
> layer error is reported.
> Using curl:
> {{$ curl -k https://localhost:8080/}}
> {{curl: (16) Error in the HTTP2 framing layer}}
> Using Chrome:
> {{GET https://localhost:8080/ net::ERR_HTTP2_FRAME_SIZE_ERROR 200}}
> I'm using Conscrypt (org.conscrypt:conscrypt-openjdk-uber:2.2.1) because I
> currently have only Java 8 environments so that's how I enable H2. I don't
> know if the bug is related to the JSSE implementation or not. I did try to
> disable TLS on the server and connect with {{curl --http2}} but that didn't
> work - curl offered to upgrade but the server returned HTTP1 and the error
> doesn't happen with HTTP1.
> The response is big enough that writing the response body data to the
> DataStreamChannel does not consume it all in one call. I believe this might
> be a factor because if I instead dribble the data out with small writes over
> time like this then no error occurs:
> {{private int counter = 0;}}
> {{@Override}}
> {{public void produce(DataStreamChannel channel) throws IOException {}}
> {{ if (counter < 4096) {}}
> {{ ByteBuffer buffer = ByteBuffer.wrap(String.format("%4d:0123456789\n",
> counter).getBytes());}}
> {{ counter++;}}
> {{ channel.write(buffer);}}
> {{ new Thread(() -> {}}
> {{ try {}}
> {{ Thread.sleep(50);}}
> {{ } catch (InterruptedException ignored) {}}
> {{ }}}
> {{ channel.requestOutput();}}
> {{ }).start();}}
> {{ } else {}}
> {{ channel.endStream();}}
> {{ }}}
> {{}}}
> To run the test program you will need to modify the code at the beginning of
> {{main}} to load your own X509 KeyStore. Connect to the server with an
> H2-capable client on port 8080.
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