I think my problem now is that I'm trying to use akka-http within the 
ActorPublisher. Is there a correct way to create the materializer inside of 
an actor? The behavior I have now is that the entire stream completes after 
I complete the first HttpResponse inside my ActorPublisher like so:
      val source = response.get.entity.dataBytes
      val fut = source.grouped(10000000).runWith(Sink.head)
      fut.onComplete(...)
I'm using grouped to collect a potentially chunked response here. 

I've created a repo 
at https://github.com/jasonmartens/AkkaStreamsChunkedDownloader
Would love to hear any feedback or suggestions that you are willing to 
give. 

Thanks,
Jason


On Monday, June 15, 2015 at 1:51:49 PM UTC-7, Jason Martens wrote:
>
> After some more debugging, it appears that I'm getting a Cancel message 
> before the entire file contents is downloaded. However, I'm not sure why 
> that is. What would cause the stream to be cancelled in this example?
>
> Thanks,
> Jason
>
> On Monday, June 15, 2015 at 9:11:38 AM UTC-7, Jason Martens wrote:
>>
>> Hello,
>>    I'm continuing my attempts to write a robust chunked large file 
>> downloader. I experience frequent timeouts when reading chunks (*cough* S3 
>> *cough*), so my original attempts just using stream elements were failing 
>> due to a single chunk timing out. I now have an ActorPublisher that tracks 
>> all the chunks to be downloaded (assumes the file size is known ahead of 
>> time) and makes sure that each chunk is actually completed. However, after 
>> downloading some number of chunks, the system stalls and I get a lot of 
>> undeliverable message errors. I'm not sure why this is happening, and the 
>> number of chunks completed before the system fails seems random so I'm 
>> guessing I have a race condition somewhere.
>>
>> Here is what I currently have:
>> https://gist.github.com/ed6fd6f8aeabc5846aa2.git
>>
>> If anyone could give me some ideas what to look at, that would be very 
>> helpful.
>>
>> Thanks!
>> Jason
>>
>

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