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Last active August 29, 2015 14:23
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Long Polling
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readme.md

HTTP Long Polling with NanoHTTPD

HTTP Long Polling Sequence Diagram

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longpolling.uml
@startuml
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Client -> Server: HTTP Get << Long Lived>>
activate Client
activate Server
Server -> Server: serve()
activate Server
Server -> BlockingQueue: poll(timeout, timeUnit)
activate BlockingQueue
BlockingQueue -> BlockingQueue: << Timeout >>
activate BlockingQueue
BlockingQueue --> Server: null
deactivate BlockingQueue
deactivate BlockingQueue
deactivate Server
Server --> Client: 408 Request Timeout
deactivate Server
Client -> Server: HTTP Get << Long Lived>>
activate Server
Server -> Server: serve()
activate Server
Server -> BlockingQueue: poll(timeout, timeUnit)
activate BlockingQueue
EventManager -> BlockingQueue: put(event)
activate BlockingQueue
BlockingQueue --> EventManager
deactivate BlockingQueue
BlockingQueue --> Server: return event
deactivate BlockingQueue
deactivate Server
Server --> Client: 200 OK event
deactivate Server
deactivate Client
@enduml
@luctrudeau
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According to https://tools.ietf.org/html/rfc6202#section-5.5, the timeout should return a 408

@luctrudeau
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After timeout, no exception are thrown, Poll returns null

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