Struct gio::SocketClient

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pub struct SocketClient { /* private fields */ }
Expand description

SocketClient is a lightweight high-level utility class for connecting to a network host using a connection oriented socket type.

You create a SocketClient object, set any options you want, and then call a sync or async connect operation, which returns a SocketConnection subclass on success.

The type of the SocketConnection object returned depends on the type of the underlying socket that is in use. For instance, for a TCP/IP connection it will be a TcpConnection.

As SocketClient is a lightweight object, you don’t need to cache it. You can just create a new one any time you need one.

Properties

enable-proxy

Readable | Writeable | Construct

family

Readable | Writeable | Construct

local-address

Readable | Writeable | Construct

protocol

Readable | Writeable | Construct

proxy-resolver

The proxy resolver to use

Readable | Writeable | Construct

timeout

Readable | Writeable | Construct

tls

Readable | Writeable | Construct

tls-validation-flags

The TLS validation flags used when creating TLS connections. The default value is TlsCertificateFlags::VALIDATE_ALL.

GLib guarantees that if certificate verification fails, at least one flag will be set, but it does not guarantee that all possible flags will be set. Accordingly, you may not safely decide to ignore any particular type of error. For example, it would be incorrect to mask TlsCertificateFlags::EXPIRED if you want to allow expired certificates, because this could potentially be the only error flag set even if other problems exist with the certificate. Therefore, there is no safe way to use this property. This is not a horrible problem, though, because you should not be attempting to ignore validation errors anyway. If you really must ignore TLS certificate errors, connect to the event signal, wait for it to be emitted with SocketClientEvent::TlsHandshaking, and use that to connect to accept-certificate.

Readable | Writeable | Construct

type

Readable | Writeable | Construct

Signals

event

Emitted when client’s activity on connectable changes state. Among other things, this can be used to provide progress information about a network connection in the UI. The meanings of the different event values are as follows:

Each event except SocketClientEvent::Complete may be emitted multiple times (or not at all) for a given connectable (in particular, if client ends up attempting to connect to more than one address). However, if client emits the event signal at all for a given connectable, then it will always emit it with SocketClientEvent::Complete when it is done.

Note that there may be additional SocketClientEvent values in the future; unrecognized event values should be ignored.

Implements

SocketClientExt, glib::ObjectExt

Implementations§

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impl SocketClient

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pub const NONE: Option<&'static SocketClient> = None

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pub fn new() -> SocketClient

Creates a new SocketClient with the default options.

Returns

a SocketClient. Free the returned object with g_object_unref().

Trait Implementations§

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impl Clone for SocketClient

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SocketClient

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for SocketClient

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Display for SocketClient

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl HasParamSpec for SocketClient

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type ParamSpec = ParamSpecObject

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type SetValue = SocketClient

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, SocketClient>

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for SocketClient

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fn hash<H>(&self, state: &mut H)
where H: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for SocketClient

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fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl ParentClassIs for SocketClient

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impl<OT: ObjectType> PartialEq<OT> for SocketClient

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fn eq(&self, other: &OT) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<OT: ObjectType> PartialOrd<OT> for SocketClient

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fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl StaticType for SocketClient

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for SocketClient

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Cast for T
where T: ObjectType,

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fn upcast<T>(self) -> T
where T: ObjectType, Self: IsA<T>,

Upcasts an object to a superclass or interface T. Read more
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where T: ObjectType, Self: IsA<T>,

Upcasts an object to a reference of its superclass or interface T. Read more
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where T: ObjectType, Self: MayDowncastTo<T>,

Tries to downcast to a subclass or interface implementor T. Read more
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where T: ObjectType, Self: MayDowncastTo<T>,

Tries to downcast to a reference of its subclass or interface implementor T. Read more
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where T: ObjectType,

Tries to cast to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while upcast will do many checks at compile-time already. downcast will perform the same checks at runtime as dynamic_cast, but will also ensure some amount of compile-time safety. Read more
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where T: ObjectType,

Tries to cast to reference to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more
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unsafe fn unsafe_cast<T>(self) -> T
where T: ObjectType,

Casts to T unconditionally. Read more
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unsafe fn unsafe_cast_ref<T>(&self) -> &T
where T: ObjectType,

Casts to &T unconditionally. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for T

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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where T: Into<Value>,

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impl<U> IsSubclassableExt for U

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impl<T> ObjectExt for T
where T: ObjectType,

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fn is<U>(&self) -> bool
where U: StaticType,

Returns true if the object is an instance of (can be cast to) T.
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fn type_(&self) -> Type

Returns the type of the object.
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fn object_class(&self) -> &Class<Object>

Returns the ObjectClass of the object. Read more
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fn class(&self) -> &Class<T>
where T: IsClass,

Returns the class of the object.
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fn class_of<U>(&self) -> Option<&Class<U>>
where U: IsClass,

Returns the class of the object in the given type T. Read more
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fn interface<U>(&self) -> Option<InterfaceRef<'_, U>>
where U: IsInterface,

Returns the interface T of the object. Read more
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fn set_property(&self, property_name: &str, value: impl Into<Value>)

Sets the property property_name of the object to value value. Read more
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fn set_property_from_value(&self, property_name: &str, value: &Value)

Sets the property property_name of the object to value value. Read more
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fn set_properties(&self, property_values: &[(&str, &dyn ToValue)])

Sets multiple properties of the object at once. Read more
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fn set_properties_from_value(&self, property_values: &[(&str, Value)])

Sets multiple properties of the object at once. Read more
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fn property<V>(&self, property_name: &str) -> V
where V: for<'b> FromValue<'b> + 'static,

Gets the property property_name of the object and cast it to the type V. Read more
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fn property_value(&self, property_name: &str) -> Value

Gets the property property_name of the object. Read more
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fn has_property(&self, property_name: &str, type_: Option<Type>) -> bool

Check if the object has a property property_name of the given type_. Read more
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Get the type of the property property_name of this object. Read more
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fn find_property(&self, property_name: &str) -> Option<ParamSpec>

Get the ParamSpec of the property property_name of this object.
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fn list_properties(&self) -> PtrSlice<ParamSpec>

Return all ParamSpec of the properties of this object.
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fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

Freeze all property notifications until the return guard object is dropped. Read more
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unsafe fn set_qdata<QD>(&self, key: Quark, value: QD)
where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>>
where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD>
where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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unsafe fn set_data<QD>(&self, key: &str, value: QD)
where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>>
where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD>
where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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fn block_signal(&self, handler_id: &SignalHandlerId)

Block a given signal handler. Read more
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fn unblock_signal(&self, handler_id: &SignalHandlerId)

Unblock a given signal handler.
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fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)

Stop emission of the currently emitted signal.
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fn stop_signal_emission_by_name(&self, signal_name: &str)

Stop emission of the currently emitted signal by the (possibly detailed) signal name.
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fn connect<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_name on this object. Read more
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fn connect_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_id on this object. Read more
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fn connect_local<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + 'static,

Connect to the signal signal_name on this object. Read more
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fn connect_local_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + 'static,

Connect to the signal signal_id on this object. Read more
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unsafe fn connect_unsafe<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_name on this object. Read more
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unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_id on this object. Read more
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fn connect_closure( &self, signal_name: &str, after: bool, closure: RustClosure ) -> SignalHandlerId

Connect a closure to the signal signal_name on this object. Read more
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fn connect_closure_id( &self, signal_id: SignalId, details: Option<Quark>, after: bool, closure: RustClosure ) -> SignalHandlerId

Connect a closure to the signal signal_id on this object. Read more
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fn watch_closure(&self, closure: &impl AsRef<Closure>)

Limits the lifetime of closure to the lifetime of the object. When the object’s reference count drops to zero, the closure will be invalidated. An invalidated closure will ignore any calls to invoke_with_values, or invoke when using Rust closures.
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fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> R

Emit signal by signal id. Read more
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fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>

Same as Self::emit but takes Value for the arguments.
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fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> R

Emit signal by its name. Read more
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fn emit_by_name_with_values( &self, signal_name: &str, args: &[Value] ) -> Option<Value>

Emit signal by its name. Read more
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fn emit_by_name_with_details<R>( &self, signal_name: &str, details: Quark, args: &[&dyn ToValue] ) -> R

Emit signal by its name with details. Read more
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fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by its name with details. Read more
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fn emit_with_details<R>( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> R

Emit signal by signal id with details. Read more
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fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by signal id with details. Read more
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fn disconnect(&self, handler_id: SignalHandlerId)

Disconnect a previously connected signal handler.
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fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + Send + Sync + 'static,

Connect to the notify signal of the object. Read more
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fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + 'static,

Connect to the notify signal of the object. Read more
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unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerId
where F: Fn(&T, &ParamSpec),

Connect to the notify signal of the object. Read more
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fn notify(&self, property_name: &str)

Notify that the given property has changed its value. Read more
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fn notify_by_pspec(&self, pspec: &ParamSpec)

Notify that the given property has changed its value. Read more
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fn downgrade(&self) -> WeakRef<T>

Downgrade this object to a weak reference.
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fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>
where F: FnOnce() + Send + 'static,

Add a callback to be notified when the Object is disposed.
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fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>
where F: FnOnce() + 'static,

Add a callback to be notified when the Object is disposed. Read more
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fn bind_property<'f, 't, O, 'a>( &'a self, source_property: &'a str, target: &'a O, target_property: &'a str ) -> BindingBuilder<'a, 'f, 't>
where O: ObjectType,

Bind property source_property on this object to the target_property on the target object. Read more
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fn ref_count(&self) -> u32

Returns the strong reference count of this object.
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unsafe fn run_dispose(&self)

Runs the dispose mechanism of the object. Read more
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impl<T> Property for T
where T: HasParamSpec,

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type Value = T

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impl<T> PropertyGet for T
where T: HasParamSpec,

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type Value = T

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fn get<R, F>(&self, f: F) -> R
where F: Fn(&<T as PropertyGet>::Value) -> R,

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impl<O> SocketClientExt for O
where O: IsA<SocketClient>,

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fn add_application_proxy(&self, protocol: &str)

Enable proxy protocols to be handled by the application. When the indicated proxy protocol is returned by the ProxyResolver, SocketClient will consider this protocol as supported but will not try to find a Proxy instance to handle handshaking. The application must check for this case by calling SocketConnectionExt::remote_address() on the returned SocketConnection, and seeing if it’s a ProxyAddress of the appropriate type, to determine whether or not it needs to handle the proxy handshaking itself. Read more
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fn connect( &self, connectable: &impl IsA<SocketConnectable>, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<SocketConnection, Error>

Tries to resolve the connectable and make a network connection to it. Read more
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fn connect_async<P: FnOnce(Result<SocketConnection, Error>) + 'static>( &self, connectable: &impl IsA<SocketConnectable>, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

This is the asynchronous version of connect(). Read more
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fn connect_future( &self, connectable: &(impl IsA<SocketConnectable> + Clone + 'static) ) -> Pin<Box_<dyn Future<Output = Result<SocketConnection, Error>> + 'static>>

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fn connect_to_host( &self, host_and_port: &str, default_port: u16, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<SocketConnection, Error>

This is a helper function for connect(). Read more
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fn connect_to_host_async<P: FnOnce(Result<SocketConnection, Error>) + 'static>( &self, host_and_port: &str, default_port: u16, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

This is the asynchronous version of connect_to_host(). Read more
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fn connect_to_host_future( &self, host_and_port: &str, default_port: u16 ) -> Pin<Box_<dyn Future<Output = Result<SocketConnection, Error>> + 'static>>

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fn connect_to_service( &self, domain: &str, service: &str, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<SocketConnection, Error>

Attempts to create a TCP connection to a service. Read more
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fn connect_to_service_async<P: FnOnce(Result<SocketConnection, Error>) + 'static>( &self, domain: &str, service: &str, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

This is the asynchronous version of connect_to_service(). Read more
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fn connect_to_service_future( &self, domain: &str, service: &str ) -> Pin<Box_<dyn Future<Output = Result<SocketConnection, Error>> + 'static>>

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fn connect_to_uri( &self, uri: &str, default_port: u16, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<SocketConnection, Error>

This is a helper function for connect(). Read more
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fn connect_to_uri_async<P: FnOnce(Result<SocketConnection, Error>) + 'static>( &self, uri: &str, default_port: u16, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

This is the asynchronous version of connect_to_uri(). Read more
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fn connect_to_uri_future( &self, uri: &str, default_port: u16 ) -> Pin<Box_<dyn Future<Output = Result<SocketConnection, Error>> + 'static>>

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fn enables_proxy(&self) -> bool

Gets the proxy enable state; see set_enable_proxy() Read more
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fn family(&self) -> SocketFamily

Gets the socket family of the socket client. Read more
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fn local_address(&self) -> Option<SocketAddress>

Gets the local address of the socket client. Read more
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fn protocol(&self) -> SocketProtocol

Gets the protocol name type of the socket client. Read more
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fn proxy_resolver(&self) -> ProxyResolver

Gets the ProxyResolver being used by self. Normally, this will be the resolver returned by ProxyResolver::default(), but you can override it with set_proxy_resolver(). Read more
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fn socket_type(&self) -> SocketType

Gets the socket type of the socket client. Read more
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fn timeout(&self) -> u32

Gets the I/O timeout time for sockets created by self. Read more
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fn is_tls(&self) -> bool

Gets whether self creates TLS connections. See set_tls() for details. Read more
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fn tls_validation_flags(&self) -> TlsCertificateFlags

👎Deprecated: Since 2.72
Gets the TLS validation flags used creating TLS connections via self. Read more
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fn set_enable_proxy(&self, enable: bool)

Sets whether or not self attempts to make connections via a proxy server. When enabled (the default), SocketClient will use a ProxyResolver to determine if a proxy protocol such as SOCKS is needed, and automatically do the necessary proxy negotiation. Read more
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fn set_family(&self, family: SocketFamily)

Sets the socket family of the socket client. If this is set to something other than SocketFamily::Invalid then the sockets created by this object will be of the specified family. Read more
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fn set_local_address(&self, address: Option<&impl IsA<SocketAddress>>)

Sets the local address of the socket client. The sockets created by this object will bound to the specified address (if not None) before connecting. Read more
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fn set_protocol(&self, protocol: SocketProtocol)

Sets the protocol of the socket client. The sockets created by this object will use of the specified protocol. Read more
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fn set_proxy_resolver(&self, proxy_resolver: Option<&impl IsA<ProxyResolver>>)

Overrides the ProxyResolver used by self. You can call this if you want to use specific proxies, rather than using the system default proxy settings. Read more
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fn set_socket_type(&self, type_: SocketType)

Sets the socket type of the socket client. The sockets created by this object will be of the specified type. Read more
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fn set_timeout(&self, timeout: u32)

Sets the I/O timeout for sockets created by self. timeout is a time in seconds, or 0 for no timeout (the default). Read more
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fn set_tls(&self, tls: bool)

Sets whether self creates TLS (aka SSL) connections. If tls is true, self will wrap its connections in a TlsClientConnection and perform a TLS handshake when connecting. Read more
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fn set_tls_validation_flags(&self, flags: TlsCertificateFlags)

👎Deprecated: Since 2.72
Sets the TLS validation flags used when creating TLS connections via self. The default value is TlsCertificateFlags::VALIDATE_ALL. Read more
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fn type_(&self) -> SocketType

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fn set_type(&self, type_: SocketType)

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fn connect_event<F: Fn(&Self, SocketClientEvent, &SocketConnectable, Option<&IOStream>) + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when client’s activity on connectable changes state. Among other things, this can be used to provide progress information about a network connection in the UI. The meanings of the different event values are as follows: Read more
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fn connect_enable_proxy_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_family_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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fn connect_local_address_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_protocol_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_proxy_resolver_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_timeout_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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fn connect_tls_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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fn connect_tls_validation_flags_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

👎Deprecated: Since 2.72
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fn connect_type_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

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impl<T> StaticTypeExt for T
where T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T> TransparentType for T

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for T
where T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<'a, T, C, E> FromValueOptional<'a> for T
where T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + 'static,

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impl<Super, Sub> MayDowncastTo<Sub> for Super
where Super: IsA<Super>, Sub: IsA<Super>,