Copyright	(c) Moritz Angermann 2014
License	MIT
Maintainer	moritz@lichtzwerge.de
Stability	stable
Portability	portable
Safe Haskell	Safe-Inferred
Language	Haskell2010

Network.Service

Description

A service is an endpoint that can receive and send messages.

Synopsis

Documentation

class ServiceMessage a where Source

Services operate on Messages, the ServiceMessage class abstracts the serialization.

Methods

toBS Source

Arguments

:: a
-> ByteString	serialization to ByteString representation

fromBS Source

Arguments

:: ByteString
-> a	deserialization from ByteString representation

data Service a Source

A Service of a certain Message data.

Constructors

Service
Fields sDone :: IO Bool tells whether the service is done or not. sRecv :: IO a receive a message. sSend :: a -> IO () send a message. sTerm :: IO () terminate the service.

type ServiceHandler a = Service a -> IO () Source

A handler takes a service and returns an IO action. The idea is that a service handler will run a service

a simple echo handler might look like the following:

handler service = do { msg <- sRecv service
                     ; sSend service msg
                     ; isDone <- sDone service
                     ; unless isDone (handler service)
                     }