no worries, this is a good question. It depends a bit on what kind of logic
you want to trigger. If you just want to do something, you can use
`mapMaterializedValue` to do something with the `OutgoingConnection` object
before materialization is complete.
If you want to prepend some bytes to be output to the connection, you can
do it like this:
.prepend(Source.single(ByteString("hello connection"))) // or any other
More complex behavior can be built e.g. by wrapping the complete connection
flow with a custom GraphStage that would be able to receive all kinds of
On Thursday, September 15, 2016 at 12:32:02 PM UTC+2, Yaroslav Klymko wrote:
> Either my question is silly or there is no easy answer.
> On Saturday, September 10, 2016 at 3:57:33 PM UTC+3, Yaroslav Klymko wrote:
>> Hi guys,
>> I'm trying to figure out on how to trigger some logic at the moment TCP
>> connection established, and preferably *before traffic goes*
>> Initial code looks like this:
>> Tcp(system).outgoingConnection(???, ???).join(flow).runWith(source, sink)
>> As far as I can see I need to access Future[OutgoingConnection]
>> val outgoingConnection: Flow[ByteString, ByteString,
>> Future[OutgoingConnection]] = Tcp(system).outgoingConnection(???, ???)
>> So far I came to:
>> val (_, connected: Future[Tcp.OutgoingConnection], _) =
>> Question 1: how to guarantee my code performed before first ByteString
>> Question 2: is there better solution
>> Question 3: how to prepend connection as first event in the flow of
>> ByteStrings ?
>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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