Struct gio::SocketClient

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

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

You create a GSocketClient 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 GSocketClient 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

Enable proxy support.

Readable | Writeable | Construct

§family

The address family to use for socket construction.

Readable | Writeable | Construct

§local-address

The local address constructed sockets will be bound to.

Readable | Writeable | Construct

§protocol

The protocol to use for socket construction, or 0 for default.

Readable | Writeable | Construct

§proxy-resolver

The proxy resolver to use

Readable | Writeable | Construct

§timeout

The I/O timeout for sockets, in seconds, or 0 for none.

Readable | Writeable | Construct

§tls

Whether to create TLS connections.

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 #GSocketClient::event signal, wait for it to be emitted with SocketClientEvent::TlsHandshaking, and use that to connect to #GTlsConnection::accept-certificate.

Readable | Writeable | Construct

§type

The type to use for socket construction.

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:

  • SocketClientEvent::Resolving: @client is about to look up @connectable in DNS. @connection will be None.

  • SocketClientEvent::Resolved: @client has successfully resolved @connectable in DNS. @connection will be None.

  • SocketClientEvent::Connecting: @client is about to make a connection to a remote host; either a proxy server or the destination server itself. @connection is the #GSocketConnection, which is not yet connected. Since GLib 2.40, you can access the remote address via g_socket_connection_get_remote_address().

  • SocketClientEvent::Connected: @client has successfully connected to a remote host. @connection is the connected #GSocketConnection.

  • SocketClientEvent::ProxyNegotiating: @client is about to negotiate with a proxy to get it to connect to @connectable. @connection is the #GSocketConnection to the proxy server.

  • SocketClientEvent::ProxyNegotiated: @client has negotiated a connection to @connectable through a proxy server. @connection is the stream returned from g_proxy_connect(), which may or may not be a #GSocketConnection.

  • SocketClientEvent::TlsHandshaking: @client is about to begin a TLS handshake. @connection is a #GTlsClientConnection.

  • SocketClientEvent::TlsHandshaked: @client has successfully completed the TLS handshake. @connection is a #GTlsClientConnection.

  • SocketClientEvent::Complete: @client has either successfully connected to @connectable (in which case @connection is the #GSocketConnection that it will be returning to the caller) or has failed (in which case @connection is None and the client is about to return an error).

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 #GSocketClient::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 #GSocketClientEvent values in the future; unrecognized @event values should be ignored.

§Implements

SocketClientExt, [trait@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 #GSocketClient with the default options.

§Returns

a #GSocketClient. 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 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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Unblock a given signal handler.
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Stop emission of the currently emitted signal.
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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
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Connect to the signal signal_id on this object. Read more
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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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Connect a closure to the signal signal_id on this object. Read more
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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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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
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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
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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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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 bind_property<'a, 'f, 't, O>( &'a self, source_property: &'a str, target: &'a O, target_property: &'a str ) -> BindingBuilder<'a, 'f, 't>
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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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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 #GProxyResolver, #GSocketClient will consider this protocol as supported but will not try to find a #GProxy instance to handle handshaking. The application must check for this case by calling g_socket_connection_get_remote_address() on the returned #GSocketConnection, and seeing if it’s a #GProxyAddress 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 g_socket_client_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 g_socket_client_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 g_socket_client_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 g_socket_client_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 g_socket_client_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 g_socket_client_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 g_socket_client_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 #GProxyResolver being used by @self. Normally, this will be the resolver returned by g_proxy_resolver_get_default(), but you can override it with g_socket_client_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 g_socket_client_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), #GSocketClient will use a #GProxyResolver 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 #GProxyResolver 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 #GTlsClientConnection 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

The type to use for socket construction.
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fn set_type(&self, type_: SocketType)

The type to use for socket construction.
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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> 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>,