Hi Thomas, There is a recipe for chunking up bytestrings in the stream docs http://doc.akka.io/docs/akka-stream-and-http-experimental/1.0-M2/scala/stream-cookbook.html#Chunking_up_a_stream_of_ByteStrings_into_limited_size_ByteStrings
Maybe you could use that as a starting point to chunk up the bytestring into the header bytestring and payload bytestring. B/ On 26 January 2015 at 12:09:57, Thomas Zimmer ([email protected]) wrote: Hi, i have a question regarding TCP Streams and request strategies. Lets say i have a TCPStream build upon the ReactiveStream Framework. I have a Subscriber to consume the incoming data as a Sink using the ActorSubscriber. Now my problem is that i have a binary network protocol that looks like this: <protocol> = <header><body> <header> = LengthField (4 bytes), Type(4 bytes), .... <body> = Length and content is dynamic So my approach was creating a own request - strategy like this: class IncomingDataActor extends ActorSubscriber with RequestStrategy { val HEADER_SIZE: Int = 8 var expectedBodyLength: Int = 0 override def requestDemand(remainingRequested : scala.Int) : Int = { if (parsingBody) { expectedBodyLength } else { HEADER_SIZE } } override def receive: Actor.Receive = { case OnNext(data: ByteString) => expectedBodyLength = readHeaderSize(data) parsingBody = true context.become(parseBody, false) } def parseBody: Actor.Receive = { case OnNext(data: ByteString) => parseBodyAndProcessData(); parsingBody = false context.unbecome() } } The problem that i receive all available data in the "non parse body" state. Is there a way to deal with that or do i have to implement some "buffer" mechanism on my own? Regards, Thomas -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout. -- Björn Antonsson Typesafe – Reactive Apps on the JVM twitter: @bantonsson -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
