It looks correct to me, what is it that makes you think it is not the
server closing the connection as the exception says?


-- 
Johan
Akka Team

On Thu, Jan 26, 2017 at 3:20 PM, Maksym Besida <maks.bes...@gmail.com>
wrote:

> Based on this paragraph
> <http://doc.akka.io/docs/akka/2.4.16/scala/stream/stream-cookbook.html#Balancing_jobs_to_a_fixed_pool_of_workers>
>  I've
> implemented a balancer for tcp outgoing requests.
>
> def outGoing(host: String, port: Int) = 
> Tcp().outgoingConnection(InetSocketAddress.createUnresolved(host, port), 
> halfClose = true)
>
>
> def balancer(endpoints: Seq[(String, Int)]): Flow[ByteString, ByteString, 
> NotUsed] = {
>   Flow.fromGraph(GraphDSL.create(){ implicit b =>
>     import GraphDSL.Implicits._
>     val balancer = b.add(Balance[ByteString](endpoints.length, 
> waitForAllDownstreams = true))
>     val merge = b.add(Merge[ByteString](endpoints.length))
>
>     endpoints.foreach { case(host, port) =>
>       balancer ~> outGoing(host, port).async ~> merge
>     }
>
>     FlowShape(balancer.in, merge.out)
>   })
> }
>
>
> I use it as follows
>
> source.via(balancer(Seq(("localhost", 22002), ("localhost", 
> 22002)))).runWith(Sink.ignore)
>
>
> I'm not interseted in result so I run it with Sink.ignore. I open 2 tcp
> connections to the same destination host for the test purpose(in reality it
> will go to different hosts)
>
> When I produce a lot of elments in my source I eventually(not after first
> message) get next error and stream fails
> akka.stream.StreamTcpException: The connection closed with error: An
> existing connection was forcibly closed by the remote host
>
> Can anybody suggest what is wrong with the example?
>
> --
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-- 
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>>>>>>>>>>      Check the FAQ: 
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>>      Search the archives: https://groups.google.com/group/akka-user
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