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Questions tagged [netty4]

44 questions
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how to use DynamicAddressConnectHandler in netty?

I would like to build a TCP server based on Netty and configure the host and port dynamically. How do I achieve this? It seems like an abstract class, I tried to extend it. But I have no no idea how to implement a dynamic address below is my code…
Peng
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Can I change Netty pipeline by events?

My app should do the next: Send a POST request to server to get the token. Connect to the websocket using this token in the headers while handshake. Short question: To activate WebSocketClientProtocolHandler I have to fire event…
Анатолий Сивенко
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Netty 4 - Copy specific nr of bytes from ByteBuf into Native ByteBuffer

I've been implementing Netty 4 on my app and I've ran into a limitation which I would like to optimize. I'm using NioSocketChannel where when I receive data, the final object it needs to end up into is a Direct ByteBuffer Native,created as…
Ralms
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Replacement for netty SimpleChannelUpstreamHandler from netty 3 to 4.1

We are upgrading from netty 3 to 4.1 and have lot of code which uses SimpleChannelUpstreamHandler. What is the replacement for this class and its method messageReceived? below is code snippet. public class IcapClientHandler extends…
Bharat Bhansali
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Netty, how to safely manipulate data from different ChannelHandlers?

I have a NioEventLoopGroup and a HashMap. Can I safely read from one ChannelHandler this collection and simultaneously change it from another?
Mike Waters
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How to release Pooled direct ByteBuf in netty when written after by ChannelHandlerContext?

In my c/s project, c/s need to exchange fixed-size message with netty. I use pooled direct buffer to buffer message. Code just like below: public void channelRead(ChannelHandlerContext ctx, Object msg) { ByteBuf in = (ByteBuf) msg; try { …
shanfeng
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How can I measure the time netty 4.1 needs to send some data?

I have a workload where I have a server and a client, both under my control. They communicate via a TCP connection using Netty 4.1. The state diagram looks like this: Server Client params = f(); --> …
le_me
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No buffer space available (maximum connections reached?) issue when triggering external Rest API using Camel and netty-http

I am using Camel and netty-http to consume the external rest api's of azure. I have configured camel-cron to run my api 3 hours once, which will trigger azure api to pull all the builds and then for each of the build it will trigger subsequent azure…
Vijaya
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How to parallelize processing of partially ordered messages?

My Netty based app ingests hundreds of thousands of messages per second from a single TCP connection processes those messages in a couple of inbound handlers sends processing results somewhere downstream Currently, all this is running on thread,…
Evgeniy Berezovsky
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Apache Camel TCP client communicate to a server

I am new to apache camel. What I am trying to do is I have exposed and Rest api to get data. From that I need to communicate to an existing TCP server(Simple java server application) to retrieve data and send back to a client. What I have picked is…
Pubudu Ranathunga
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Deadlock while closing Netty channel

I'm working on an application that uses Netty to send/receive RTP traffic. During a load test, we noticed that our single work thread ran into a deadlock while attempting to wait for Netty to close a channel. Context: There is a shared…
schneida
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Constructing HTTP Chunks from ByteBuf in Netty 4

I have a Netty 3 codebase with an HTTP Message decoder which extends ReplayingDecoder, and I need to migrate code which analyzes the chunks of the message, which means I need to get the chunks. protected Object decode(ChannelHandlerContext ctx,…
patrickjp93
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Adding latency in Netty Server

What is the best way to add latency to a Netty Server for testing? If a simple Thread.sleep(n) is added before the writeAndFlush(), the handler doesn’t become free to process the next request until the writeAndFlush() is executed, which is necessary…
Alarka Sanyal
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Determine which TLS version was negotiated by client to a Netty server, with SniHandler

I am current working on a Netty server with SniHandler in the pipeline. I would like to log the negotiated TLS version in session, but I cannot find this information in SniHandler or SniHandler.SslContext. I was trying to access the SslHandler from…
Harry
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Netty multiple protocols on the same port?

I would need to implement a HTTP server where a certain URI allows upgrading to a WebSocket connection. The standard WebSocket handler class is…
eof
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