Modulewai-extra-3.1.18Haskell2010

Network.Wai.EventSource

A WAI adapter to the HTML5 Server-Sent Events API.

If running through a proxy like Nginx you might need to add the headers:

[ ("X-Accel-Buffering", "no"), ("Cache-Control", "no-cache")]

There is a small example using these functions in the example directory.

1 type
3 values

Packagewai-extra-3.1.18
Exports4
LanguageHaskell2010
LicenceMIT
SourceEventSource.hs

datadata ServerEvent

Type representing a communication over an event stream. This can be an actual event, a comment, a modification to the retry timer, or a special "close" event indicating the server should close the connection.

Constructors

ServerEvent
- eventName :: Maybe Builder
- eventId :: Maybe Builder
- eventData :: [Builder]
CommentEvent
- eventComment :: Builder
RetryEvent
- eventRetry :: Int
CloseEvent

valueeventSourceAppChan :: Chan ServerEvent -> Application

Make a new WAI EventSource application reading events from the given channel.

valueeventSourceAppIO :: IO ServerEvent -> Application

Make a new WAI EventSource application reading events from the given IO action.

valueeventStreamAppRaw

:: (ServerEvent -> IO ()) -> IO () -> IO ()
-> Application

Make a new WAI EventSource application with a handler that emits events.