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Repo info
    @zzm6368217 you find it on github?
    Hi, I am Lay Patel. I am a junior(3rd year) majoring in computer Science with a minor in Security and Risk Analysis, and pursuing my bachelors's degree from The Pennsylvania State University. I am interested in working with with you as a part of GSoC. I have experience in network technology. In my networking class, I designed a network architecture for a society, in a team driven environment. I have experience in python, java , C and other object oriented programming languages. I am ready to learn any new technology skills. I am interested in "Implement native event loop telemetry " project. What are the further instructions for me?
    Lakindu Akash
    Hi, I'm a final year student of BSc(Hons) in Computer Science at the University of Colombo. I would like to participate in GSoC. I read the Idealist and I would like to get help to continue with it. I'm doing research on web service architecture performance with Ballerina language which is built with Netty also.
    I have some basic knowledge of netty and I have some good skills in coding.
    Thank you. :)
    Lakindu Akash
    I'm interested in Implement native event loop telemetry and Add io_uring based transport
    Hi, I want to log http request was closed by client(maybe client set timeout), how to set log config in appplication.yam?
    Shahnawaz Shaikh
    hello everyone I am shahnawaz a 2nd year student at HMRITM in Indrarastha University, I want to contribute for Implement event loop telemetry. help to get started
    Piyush Goyal
    Hi everyone
    I am Piyush Goyal a Btech Computer Science student currently studying in Indian Institute of Technology (IIT) Mandi.
    I was going through the project list of Netty and wanted to work on Project 2 :"Regression testsuite"
    I m familiar with java/c/c++/jni and even python. I am familiar with the docker as well. I will write a proposal soon. But wanted to discuss more about the project with you first. Can you kindly summarise what the project is all about
    Francesco Nigro
    Hi, go and write a proposal on https://github.com/netty/netty/issues (see the others re GSoC there to understand how/why)
    Hi Guys
    I'm facing this weird exception netty/netty#10168
    any help on this?
    Dario Abdulrehman
    Is the "Netty in Action" book still relevant, or very outdated?
    @dabd It still valid
    Dario Abdulrehman
    @hepin1989 thanks, I started reading the docs, and may refer to the book.
    @dabd I translated the Chinese version, the book itself is pretty good.
    Dario Abdulrehman
    cool, how come after so many years the book is still relevant?
    @dabd Because netty is well designed . but it doesnot cover the http2
    Dario Abdulrehman
    yep, I read about its excellent package structure
    Hello everyone.i meet a problem today,when i run my app in local,it run good.But when it run in production,it throw a exception like "unexpected message type:PooledUnsafeDirectByteBuf" in customer. Can someone tell me what it is problem?Thanks.
    Jelmer Kuperus
    I am stuck with netty version 4.0.33.Final but i'd like to use netty-handler-proxy which does not seem to be available for this old version of netty, is a newer version compatible with this, or am i out of luck

    Maybe you can help me with one problem...
    My app accumulates a lot of io.netty.util.Recycler.DefaultHandle objects in the heap. And general RAM consumption never decrease until some stop the world GC pause.
    Can you guess am I doing something wrong?

    heap: https://paste.pics/149dfc12708ebfe917297c91e9f6f861
    ram consumption: https://paste.pics/1664079267b8160f5c82b69e35e5ee7c

    and actually the same goes to io.netty.buffer.PooledUnsafeDirectByteBuf.... I don't understand why do I have so many such objects. I always create them using PooledByteBufAllocator.DEFAULT.directBuffer() and always release them asap. The only thing that comes to my mind is that I create ByteBuf in one thread and after that pass it to another and only after that I pass it to the netty channel...
    Christophe Bornet

    Hi, I have a small question. If I do

    ByteBuffer buffer = ByteBuffer.allocate(10);
    ByteBuf byteBuf = Unpooled.wrappedBuffer(buffer);

    Is there a possibility of the buffer being GC'd while being used by the async function ?

    Norman Maurer
    @cbornet nope
    Josef Grieb
    Hi which cpu architectures are supported for netty on linux? arm and x86?
    Norman Maurer
    aarch64 and x86 for the native transports
    for non native transports whatever is supported by java
    Josef Grieb
    does anyone have any idea how to debug java jni? I have tried some gdb java jni tutorial/examples but it didn't work
    Josef Grieb
    here is finally my io_uring draft netty/netty#10356 I would appreciate feedback :)
    Francesco Nigro
    @1Jo1 Try attach to the java process (using the pid of jps) by using CLion!
    Can anyone please help me with this ? netty/netty#10350
    Josef Grieb
    @franz1981 thanks it worked :)
    Josef Grieb
    is there 32 bit support for epoll?
    Willi Schönborn
    I'm using the LengthFieldPrepender but afterwards I have another custom encoder that adds a leading magic byte and a trailing checksum byte. The problem that I have is that the LengthFieldPrepender emits two events and that produces incorrect messages being written. How can I prevent that?
    Violeta Georgieva
    I want to support HTTP/2 with TLSv1.2 and TLSv1.3. The specified Http2SecurityUtil.CIPHERS in Netty examples (https://github.com/netty/netty/blob/28e1fbd366602d8f4b50921afb2c9d5e41b94a2d/example/src/main/java/io/netty/example/http2/helloworld/server/Http2Server.java#L60) are TLSv1.2 specific (https://tools.ietf.org/html/rfc7540#section-9.2.2) and not supported by TLSv1.3. As a result when client with TLSv1.3 connects to my server, the handshake fails due to missing TLSv1.3 ciphers. How can I use the JDK TLSv1.3 ciphers in combination with Http2SecurityUtil.CIPHERS?
    javax.net.ssl|DEBUG|1F|nioEventLoopGroup-3-2|2020-07-29 13:46:24.700 EEST|HandshakeContext.java:298|Ignore unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 for TLS13
    javax.net.ssl|DEBUG|1F|nioEventLoopGroup-3-2|2020-07-29 13:46:24.700 EEST|HandshakeContext.java:298|Ignore unsupported cipher suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 for TLS13
    javax.net.ssl|DEBUG|1F|nioEventLoopGroup-3-2|2020-07-29 13:46:24.700 EEST|HandshakeContext.java:298|Ignore unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 for TLS13
    javax.net.ssl|DEBUG|1F|nioEventLoopGroup-3-2|2020-07-29 13:46:24.700 EEST|HandshakeContext.java:298|Ignore unsupported cipher suite: TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 for TLS13
    javax.net.ssl|DEBUG|1F|nioEventLoopGroup-3-2|2020-07-29 13:46:24.700 EEST|HandshakeContext.java:298|Ignore unsupported cipher suite: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 for TLS13
    javax.net.ssl|DEBUG|1F|nioEventLoopGroup-3-2|2020-07-29 13:46:24.700 EEST|HandshakeContext.java:298|Ignore unsupported cipher suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 for TLS13
    javax.net.ssl|DEBUG|1F|nioEventLoopGroup-3-2|2020-07-29 13:46:24.700 EEST|HandshakeContext.java:305|No available cipher suite for TLS13
    Violeta Georgieva
    @normanmaurer Can you help with the above ^^^ ?
    Hi everyone! I'm using http client from reactor-netty and I wonder about one edge case. So I'm making http request for a large file. In the middle of the request network interface is lost. I expect to get socket exception but instead it's stuck forever. I see that I'm waiting on blocking parameterless select() call in NioEventLoop.select(). I can of course cancel the request from some watcher thread but I wonder if it can be handled in lower level. Could you please advise?
    Prashant Singh
    Hey I'm Prashant Singh
    {Ritualistic Continuous Programmer}{Monomaniacal Mad} {Quick Learner} {Idiosyncratic} {Tenacious} {Forthright} {Leadership Quality} {prashreyant}
    I 'm a student of R.E.I Intermediate College
    My Hobbies are: Programming, Brain Storming, Gaming, Travelling....
    My Handles:
    Linkedin :- https://www.linkedin.com/in/prashant-singh-b9a9001b1
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    Harsh Maheshwari
    Hi Folks, My team is using Netty webserver (Along with Spring WebFlux) for the current project. I am trying to understand how this work. Is there any diagram which explains me about its internal component? I have the following question related to this:
    1. How many requests a Netty Web server can accept? Can we cap on this?
    Harsh Maheshwari
    Any help for this ^^
    francis lee
    you can test it
    Andrey Mizurov

    Any help for this ^^

    Hi try asking you question in https://gitter.im/reactor/reactor-netty, because WebFlux not use Netty directly.

    Atul Gupta
    i am trying to set the MDC context to netty pipeline
    can anyone please help
    Andrey Mizurov
    @atulmgupta could you please share more info

    Hey it seems that there isn't that much but I am currently working on a basic Chat Client.
    This been said I am unsure about the architecture.
    As I am planning to have multiple chat rooms.
    So the flow would be like this:

    • User creates chat room with a certain name
    • Other users can search for this name and see the chatroom
    • Users can join the chatroom and will receive messages posted in it.

    My idea was to create a ChatRoom object with a ChannelGroup in it.
    When the user enters the chatroom his channel will be added to the channel group inside this ChatRoom.
    When a user sends a message the message will contain a charroom_id so that I can forward it to the correct room.

    As the user can only connect to one chatroom at a time I was wondering if there would be a nice way of automaticly forwarding the messages to the correct room ?

    Currently I am doing a lookup and then invoke the message handler in the correct chatroom. But I am not sure if I should create an own set in the pipeline for this or what the best practise way would be.

    Regards Artur

    Hi, quick question. I'm using Spring Boot Web Client with Netty. I'm doing a multipart post with 2 text fields and one binary field. The call works with RestTemplate and Postman. I noted that, when I use postman I have: