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
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