Safe Haskell	None
Language	Haskell98

Snap.Http.Server.Config

Description

This module exports the Config datatype, which you can use to configure the Snap HTTP server.

Synopsis

Documentation

data Config m a Source

A record type which represents partial configurations (for httpServe) by wrapping all of its fields in a Maybe. Values of this type are usually constructed via its Monoid instance by doing something like:

setPort 1234 mempty

Any fields which are unspecified in the Config passed to httpServe (and this is the norm) are filled in with default values from defaultConfig.

Instances

Show (Config m a)
Monoid (Config m a)
Typeable ((* -> ) -> -> *) Config

data ConfigLog Source

Data type representing the configuration of a logging target

Constructors

ConfigNoLog	no logging
ConfigFileLog FilePath	log to text file
ConfigIoLog (ByteString -> IO ())	log custom IO handler

Instances

Show ConfigLog

emptyConfig :: Config m a Source

Returns a completely empty Config. Equivalent to mempty from Config's Monoid instance.

defaultConfig :: MonadSnap m => Config m a Source

These are the default values for the options

commandLineConfig Source

Arguments

:: MonadSnap m
=> Config m a	default configuration. This is combined with `defaultConfig` to obtain default values to use if the given parameter is specified on the command line. Usually it is fine to use `emptyConfig` here.
-> IO (Config m a)

Returns a Config obtained from parsing command-line options, using the default Snap OptDescr set.

On Unix systems, the locale is read from the LANG environment variable.

extendedCommandLineConfig Source

Arguments

:: MonadSnap m
=> [OptDescr (Maybe (Config m a))]	User options.
-> (a -> a -> a)	State for multiple invoked user command-line options will be combined using this function.
-> Config m a	default configuration. This is combined with Snap's `defaultConfig` to obtain default values to use if the given parameter is specified on the command line. Usually it is fine to use `emptyConfig` here.
-> IO (Config m a)

Returns a Config obtained from parsing command-line options, using the default Snap OptDescr set as well as a list of user OptDescrs. User OptDescrs use the "other" field (accessible using getOther and setOther) to store additional command-line option state. These are combined using a user-defined combining function.

On Unix systems, the locale is read from the LANG environment variable.

completeConfig :: MonadSnap m => Config m a -> IO (Config m a) Source

optDescrs Source

Arguments

:: MonadSnap m
=> Config m a	the configuration defaults.
-> [OptDescr (Maybe (Config m a))]

Returns a description of the snap command line options suitable for use with System.Console.GetOpt.

fmapOpt :: (a -> b) -> OptDescr a -> OptDescr b Source

getAccessLog :: Config m a -> Maybe ConfigLog Source

Path to the access log

getBind :: Config m a -> Maybe ByteString Source

Returns the address to bind to (for http)

getCompression :: Config m a -> Maybe Bool Source

If set and set to True, compression is turned on when applicable

getDefaultTimeout :: Config m a -> Maybe Int Source

getErrorHandler :: Config m a -> Maybe (SomeException -> m ()) Source

A MonadSnap action to handle 500 errors

getErrorLog :: Config m a -> Maybe ConfigLog Source

Path to the error log

getHostname :: Config m a -> Maybe ByteString Source

The hostname of the HTTP server. This field has the same format as an HTTP Host header; if a Host header came in with the request, we use that, otherwise we default to this value specified in the configuration.

getLocale :: Config m a -> Maybe String Source

Gets the locale to use. Locales are used on Unix only, to set the LANG/LC_ALL/etc. environment variable. For instance if you set the locale to "en_US", we'll set the relevant environment variables to "en_US.UTF-8".

getOther :: Config m a -> Maybe a Source

getPort :: Config m a -> Maybe Int Source

Returns the port to listen on (for http)

getProxyType :: Config m a -> Maybe ProxyType Source

getSSLBind :: Config m a -> Maybe ByteString Source

Returns the address to bind to (for https)

getSSLCert :: Config m a -> Maybe FilePath Source

Path to the SSL certificate file

getSSLKey :: Config m a -> Maybe FilePath Source

Path to the SSL key file

getSSLChainCert :: Config m a -> Maybe Bool Source

Path to the SSL certificate file

getSSLPort :: Config m a -> Maybe Int Source

Returns the port to listen on (for https)

getVerbose :: Config m a -> Maybe Bool Source

Whether to write server status updates to stderr

getStartupHook :: Config m a -> Maybe (StartupInfo m a -> IO ()) Source

A startup hook is run after the server initializes but before user request processing begins. The server passes, through a StartupInfo object, the startup hook a list of the sockets it is listening on and the final Config object completed after command-line processing.

setAccessLog :: ConfigLog -> Config m a -> Config m a Source

setBind :: ByteString -> Config m a -> Config m a Source

setCompression :: Bool -> Config m a -> Config m a Source

setDefaultTimeout :: Int -> Config m a -> Config m a Source

setErrorHandler :: (SomeException -> m ()) -> Config m a -> Config m a Source

setErrorLog :: ConfigLog -> Config m a -> Config m a Source

setHostname :: ByteString -> Config m a -> Config m a Source

setLocale :: String -> Config m a -> Config m a Source

setOther :: a -> Config m a -> Config m a Source

setPort :: Int -> Config m a -> Config m a Source

setProxyType :: ProxyType -> Config m a -> Config m a Source

setSSLBind :: ByteString -> Config m a -> Config m a Source