Copyright	Will Thompson Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria
Safe Haskell	None
Language	Haskell2010

GI.Gio.Objects.SocketAddressEnumerator

Contents

Exported types
Methods

Description

SocketAddressEnumerator is an enumerator type for SocketAddress instances. It is returned by enumeration functions such as socketConnectableEnumerate, which returns a SocketAddressEnumerator to list all the GSocketAddresses which could be used to connect to that SocketConnectable.

Enumeration is typically a blocking operation, so the asynchronous methods socketAddressEnumeratorNextAsync and socketAddressEnumeratorNextFinish should be used where possible.

Each SocketAddressEnumerator can only be enumerated once. Once socketAddressEnumeratorNext has returned Nothing (and no error), further enumeration with that SocketAddressEnumerator is not possible, and it can be unreffed.

Synopsis

newtype SocketAddressEnumerator = SocketAddressEnumerator (ManagedPtr SocketAddressEnumerator)
class (GObject o, IsDescendantOf SocketAddressEnumerator o) => IsSocketAddressEnumerator o
toSocketAddressEnumerator :: (MonadIO m, IsSocketAddressEnumerator o) => o -> m SocketAddressEnumerator
noSocketAddressEnumerator :: Maybe SocketAddressEnumerator
socketAddressEnumeratorNext :: (HasCallStack, MonadIO m, IsSocketAddressEnumerator a, IsCancellable b) => a -> Maybe b -> m SocketAddress
socketAddressEnumeratorNextAsync :: (HasCallStack, MonadIO m, IsSocketAddressEnumerator a, IsCancellable b) => a -> Maybe b -> Maybe AsyncReadyCallback -> m ()
socketAddressEnumeratorNextFinish :: (HasCallStack, MonadIO m, IsSocketAddressEnumerator a, IsAsyncResult b) => a -> b -> m SocketAddress

Exported types

newtype SocketAddressEnumerator Source #

Memory-managed wrapper type.

Constructors

SocketAddressEnumerator (ManagedPtr SocketAddressEnumerator)

Instances

Instances details

Eq SocketAddressEnumerator Source #
Instance details Defined in GI.Gio.Objects.SocketAddressEnumerator Methods (==) :: SocketAddressEnumerator -> SocketAddressEnumerator -> Bool # (/=) :: SocketAddressEnumerator -> SocketAddressEnumerator -> Bool #
GObject SocketAddressEnumerator Source #
Instance details Defined in GI.Gio.Objects.SocketAddressEnumerator Methods gobjectType :: IO GType #
IsGValue SocketAddressEnumerator Source #	Convert `SocketAddressEnumerator` to and from `GValue` with `toGValue` and `fromGValue`.
Instance details Defined in GI.Gio.Objects.SocketAddressEnumerator Methods toGValue :: SocketAddressEnumerator -> IO GValue # fromGValue :: GValue -> IO SocketAddressEnumerator #
HasParentTypes SocketAddressEnumerator Source #
Instance details Defined in GI.Gio.Objects.SocketAddressEnumerator
type ParentTypes SocketAddressEnumerator Source #
Instance details Defined in GI.Gio.Objects.SocketAddressEnumerator type ParentTypes SocketAddressEnumerator = '[Object]

class (GObject o, IsDescendantOf SocketAddressEnumerator o) => IsSocketAddressEnumerator o Source #

Type class for types which can be safely cast to SocketAddressEnumerator, for instance with toSocketAddressEnumerator.

Instances

Instances details

(GObject o, IsDescendantOf SocketAddressEnumerator o) => IsSocketAddressEnumerator o Source #
Instance details Defined in GI.Gio.Objects.SocketAddressEnumerator

toSocketAddressEnumerator :: (MonadIO m, IsSocketAddressEnumerator o) => o -> m SocketAddressEnumerator Source #

Cast to SocketAddressEnumerator, for types for which this is known to be safe. For general casts, use castTo.

noSocketAddressEnumerator :: Maybe SocketAddressEnumerator Source #

A convenience alias for Nothing :: Maybe SocketAddressEnumerator.

Methods

Overloaded methods

:: (HasCallStack, MonadIO m, IsSocketAddressEnumerator a, IsCancellable b)
=> a	`enumerator`: a `SocketAddressEnumerator`
-> Maybe b	`cancellable`: optional `Cancellable` object, `Nothing` to ignore.
-> m SocketAddress	Returns: a `SocketAddress` (owned by the caller), or `Nothing` on error (in which case *`error` will be set) or if there are no more addresses. (Can throw `GError`)

Retrieves the next SocketAddress from enumerator. Note that this may block for some amount of time. (Eg, a NetworkAddress may need to do a DNS lookup before it can return an address.) Use socketAddressEnumeratorNextAsync if you need to avoid blocking.

If enumerator is expected to yield addresses, but for some reason is unable to (eg, because of a DNS error), then the first call to socketAddressEnumeratorNext will return an appropriate error in *error. However, if the first call to socketAddressEnumeratorNext succeeds, then any further internal errors (other than cancellable being triggered) will be ignored.

nextAsync

socketAddressEnumeratorNextAsync Source #

Arguments

:: (HasCallStack, MonadIO m, IsSocketAddressEnumerator a, IsCancellable b)
=> a	`enumerator`: a `SocketAddressEnumerator`
-> Maybe b	`cancellable`: optional `Cancellable` object, `Nothing` to ignore.
-> Maybe AsyncReadyCallback	`callback`: a `AsyncReadyCallback` to call when the request is satisfied
-> m ()

Asynchronously retrieves the next SocketAddress from enumerator and then calls callback, which must call socketAddressEnumeratorNextFinish to get the result.

It is an error to call this multiple times before the previous callback has finished.

nextFinish

socketAddressEnumeratorNextFinish Source #

Arguments

:: (HasCallStack, MonadIO m, IsSocketAddressEnumerator a, IsAsyncResult b)
=> a	`enumerator`: a `SocketAddressEnumerator`
-> b	`result`: a `AsyncResult`
-> m SocketAddress	Returns: a `SocketAddress` (owned by the caller), or `Nothing` on error (in which case *`error` will be set) or if there are no more addresses. (Can throw `GError`)

Retrieves the result of a completed call to socketAddressEnumeratorNextAsync. See socketAddressEnumeratorNext for more information about error handling.