Struct gio::TlsConnection

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

GTlsConnection is the base TLS connection class type, which wraps a IOStream and provides TLS encryption on top of it. Its subclasses, TlsClientConnection and TlsServerConnection, implement client-side and server-side TLS, respectively.

For DTLS (Datagram TLS) support, see Gio::DtlsConnection.

This is an Abstract Base Class, you cannot instantiate it.

§Properties

§advertised-protocols

The list of application-layer protocols that the connection advertises that it is willing to speak. See g_tls_connection_set_advertised_protocols().

Readable | Writeable

§base-io-stream

The #GIOStream that the connection wraps. The connection holds a reference to this stream, and may run operations on the stream from other threads throughout its lifetime. Consequently, after the #GIOStream has been constructed, application code may only run its own operations on this stream when no #GIOStream operations are running.

Readable | Writeable | Construct Only

§certificate

The connection’s certificate; see g_tls_connection_set_certificate().

Readable | Writeable

§ciphersuite-name

The name of the TLS ciphersuite in use. See g_tls_connection_get_ciphersuite_name().

Readable

§database

The certificate database to use when verifying this TLS connection. If no certificate database is set, then the default database will be used. See g_tls_backend_get_default_database().

When using a non-default database, #GTlsConnection must fall back to using the #GTlsDatabase to perform certificate verification using g_tls_database_verify_chain(), which means certificate verification will not be able to make use of TLS session context. This may be less secure. For example, if you create your own #GTlsDatabase that just wraps the default #GTlsDatabase, you might expect that you have not changed anything, but this is not true because you may have altered the behavior of #GTlsConnection by causing it to use g_tls_database_verify_chain(). See the documentation of g_tls_database_verify_chain() for more details on specific security checks that may not be performed. Accordingly, setting a non-default database is discouraged except for specialty applications with unusual security requirements.

Readable | Writeable

§interaction

A #GTlsInteraction object to be used when the connection or certificate database need to interact with the user. This will be used to prompt the user for passwords where necessary.

Readable | Writeable

§negotiated-protocol

The application-layer protocol negotiated during the TLS handshake. See g_tls_connection_get_negotiated_protocol().

Readable

§peer-certificate

The connection’s peer’s certificate, after the TLS handshake has completed or failed. Note in particular that this is not yet set during the emission of #GTlsConnection::accept-certificate.

(You can watch for a #GObject::notify signal on this property to detect when a handshake has occurred.)

Readable

§peer-certificate-errors

The errors noticed while verifying #GTlsConnection:peer-certificate. Normally this should be 0, but it may not be if #GTlsClientConnection:validation-flags is not TlsCertificateFlags::VALIDATE_ALL, or if #GTlsConnection::accept-certificate overrode the default behavior.

GLib guarantees that if certificate verification fails, at least one error will be set, but it does not guarantee that all possible errors 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.

Readable

§protocol-version

The TLS protocol version in use. See g_tls_connection_get_protocol_version().

Readable

§rehandshake-mode

The rehandshaking mode. See g_tls_connection_set_rehandshake_mode().

Readable | Writeable | Construct

§require-close-notify

Whether or not proper TLS close notification is required. See g_tls_connection_set_require_close_notify().

Readable | Writeable | Construct

§use-system-certdb

Whether or not the system certificate database will be used to verify peer certificates. See g_tls_connection_set_use_system_certdb().

Readable | Writeable | Construct

IOStream

§closed

Whether the stream is closed.

Readable

§input-stream

The InputStream to read from.

Readable

§output-stream

The OutputStream to write to.

Readable

§Signals

§accept-certificate

Emitted during the TLS handshake after the peer certificate has been received. You can examine @peer_cert’s certification path by calling g_tls_certificate_get_issuer() on it.

For a client-side connection, @peer_cert is the server’s certificate, and the signal will only be emitted if the certificate was not acceptable according to @conn’s #GTlsClientConnection:validation_flags. If you would like the certificate to be accepted despite @errors, return true from the signal handler. Otherwise, if no handler accepts the certificate, the handshake will fail with TlsError::BadCertificate.

GLib guarantees that if certificate verification fails, this signal will be emitted with at least one error will be set in @errors, but it does not guarantee that all possible errors will be set. Accordingly, you may not safely decide to ignore any particular type of error. For example, it would be incorrect to ignore 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.

For a server-side connection, @peer_cert is the certificate presented by the client, if this was requested via the server’s #GTlsServerConnection:authentication_mode. On the server side, the signal is always emitted when the client presents a certificate, and the certificate will only be accepted if a handler returns true.

Note that if this signal is emitted as part of asynchronous I/O in the main thread, then you should not attempt to interact with the user before returning from the signal handler. If you want to let the user decide whether or not to accept the certificate, you would have to return false from the signal handler on the first attempt, and then after the connection attempt returns a TlsError::BadCertificate, you can interact with the user, and if the user decides to accept the certificate, remember that fact, create a new connection, and return true from the signal handler the next time.

If you are doing I/O in another thread, you do not need to worry about this, and can simply block in the signal handler until the UI thread returns an answer.

§Implements

TlsConnectionExt, IOStreamExt, [trait@glib::ObjectExt], TlsConnectionExtManual, IOStreamExtManual

GLib type: GObject with reference counted clone semantics.

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impl TlsConnection

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

Trait Implementations§

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impl Clone for TlsConnection

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fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

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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 TlsConnection

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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 TlsConnection

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type ParamSpec = ParamSpecObject

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type SetValue = TlsConnection

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

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for TlsConnection

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

Hashes the memory address of this object.

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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 TlsConnection

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

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

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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 TlsConnection

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

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

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

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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 TlsConnection

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

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

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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 TlsConnection

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for TlsConnection

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impl IsA<IOStream> for TlsConnection

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impl IsA<TlsConnection> for TlsClientConnection

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impl IsA<TlsConnection> for TlsServerConnection

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Requests an asynchronous close of the stream, releasing resources related to it. When the operation is finished @callback will be called. You can then call g_io_stream_close_finish() to get the result of the operation. Read more
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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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Connect to the signal signal_id on this object. Read more
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fn disconnect(&self, handler_id: SignalHandlerId)

Disconnect a previously connected signal handler.
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Connect to the notify signal of the object. Read more
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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
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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Notify that the given property has changed its value. Read more
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Downgrade this object to a weak reference.
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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<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<O> TlsConnectionExt for O
where O: IsA<TlsConnection>,

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fn emit_accept_certificate( &self, peer_cert: &impl IsA<TlsCertificate>, errors: TlsCertificateFlags, ) -> bool

Used by #GTlsConnection implementations to emit the #GTlsConnection::accept-certificate signal. Read more
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fn certificate(&self) -> Option<TlsCertificate>

Gets @self’s certificate, as set by g_tls_connection_set_certificate(). Read more
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fn ciphersuite_name(&self) -> Option<GString>

Available on crate feature v2_70 only.
Returns the name of the current TLS ciphersuite, or None if the connection has not handshaked or has been closed. Beware that the TLS backend may use any of multiple different naming conventions, because OpenSSL and GnuTLS have their own ciphersuite naming conventions that are different from each other and different from the standard, IANA- registered ciphersuite names. The ciphersuite name is intended to be displayed to the user for informative purposes only, and parsing it is not recommended. Read more
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fn database(&self) -> Option<TlsDatabase>

Gets the certificate database that @self uses to verify peer certificates. See g_tls_connection_set_database(). Read more
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fn interaction(&self) -> Option<TlsInteraction>

Get the object that will be used to interact with the user. It will be used for things like prompting the user for passwords. If None is returned, then no user interaction will occur for this connection. Read more
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fn negotiated_protocol(&self) -> Option<GString>

Available on crate feature v2_60 only.
Gets the name of the application-layer protocol negotiated during the handshake. Read more
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fn peer_certificate(&self) -> Option<TlsCertificate>

Gets @self’s peer’s certificate after the handshake has completed or failed. (It is not set during the emission of #GTlsConnection::accept-certificate.) Read more
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fn peer_certificate_errors(&self) -> TlsCertificateFlags

Gets the errors associated with validating @self’s peer’s certificate, after the handshake has completed or failed. (It is not set during the emission of #GTlsConnection::accept-certificate.) Read more
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fn protocol_version(&self) -> TlsProtocolVersion

Available on crate feature v2_70 only.
Returns the current TLS protocol version, which may be TlsProtocolVersion::Unknown if the connection has not handshaked, or has been closed, or if the TLS backend has implemented a protocol version that is not a recognized #GTlsProtocolVersion. Read more
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fn rehandshake_mode(&self) -> TlsRehandshakeMode

👎Deprecated: Since 2.60
Gets @self rehandshaking mode. See g_tls_connection_set_rehandshake_mode() for details. Read more
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fn requires_close_notify(&self) -> bool

Tests whether or not @self expects a proper TLS close notification when the connection is closed. See g_tls_connection_set_require_close_notify() for details. Read more
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fn handshake( &self, cancellable: Option<&impl IsA<Cancellable>>, ) -> Result<(), Error>

Attempts a TLS handshake on @self. Read more
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fn handshake_async<P: FnOnce(Result<(), Error>) + 'static>( &self, io_priority: Priority, cancellable: Option<&impl IsA<Cancellable>>, callback: P, )

Asynchronously performs a TLS handshake on @self. See g_tls_connection_handshake() for more information. Read more
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fn handshake_future( &self, io_priority: Priority, ) -> Pin<Box_<dyn Future<Output = Result<(), Error>> + 'static>>

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fn set_certificate(&self, certificate: &impl IsA<TlsCertificate>)

This sets the certificate that @self will present to its peer during the TLS handshake. For a #GTlsServerConnection, it is mandatory to set this, and that will normally be done at construct time. Read more
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fn set_database(&self, database: Option<&impl IsA<TlsDatabase>>)

Sets the certificate database that is used to verify peer certificates. This is set to the default database by default. See g_tls_backend_get_default_database(). If set to None, then peer certificate validation will always set the TlsCertificateFlags::UNKNOWN_CA error (meaning #GTlsConnection::accept-certificate will always be emitted on client-side connections, unless that bit is not set in #GTlsClientConnection:validation-flags). Read more
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fn set_interaction(&self, interaction: Option<&impl IsA<TlsInteraction>>)

Set the object that will be used to interact with the user. It will be used for things like prompting the user for passwords. Read more
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fn set_rehandshake_mode(&self, mode: TlsRehandshakeMode)

👎Deprecated: Since 2.60
Since GLib 2.64, changing the rehandshake mode is no longer supported and will have no effect. With TLS 1.3, rehandshaking has been removed from the TLS protocol, replaced by separate post-handshake authentication and rekey operations. Read more
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fn set_require_close_notify(&self, require_close_notify: bool)

Sets whether or not @self expects a proper TLS close notification before the connection is closed. If this is true (the default), then @self will expect to receive a TLS close notification from its peer before the connection is closed, and will return a TlsError::Eof error if the connection is closed without proper notification (since this may indicate a network error, or man-in-the-middle attack). Read more
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fn advertised_protocols(&self) -> Vec<GString>

Available on crate feature v2_60 only.
The list of application-layer protocols that the connection advertises that it is willing to speak. See g_tls_connection_set_advertised_protocols().
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fn base_io_stream(&self) -> Option<IOStream>

The #GIOStream that the connection wraps. The connection holds a reference to this stream, and may run operations on the stream from other threads throughout its lifetime. Consequently, after the #GIOStream has been constructed, application code may only run its own operations on this stream when no #GIOStream operations are running.
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fn connect_accept_certificate<F: Fn(&Self, &TlsCertificate, TlsCertificateFlags) -> bool + 'static>( &self, f: F, ) -> SignalHandlerId

Emitted during the TLS handshake after the peer certificate has been received. You can examine @peer_cert’s certification path by calling g_tls_certificate_get_issuer() on it. Read more
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fn connect_advertised_protocols_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

Available on crate feature v2_60 only.
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fn connect_certificate_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

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

Available on crate feature v2_70 only.
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fn connect_database_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

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

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

Available on crate feature v2_60 only.
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fn connect_peer_certificate_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

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

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

Available on crate feature v2_70 only.
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fn connect_rehandshake_mode_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

👎Deprecated: Since 2.60
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fn connect_require_close_notify_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

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impl<O> TlsConnectionExtManual for O
where O: IsA<TlsConnection>,

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fn channel_binding_data( &self, type_: TlsChannelBindingType, ) -> Result<ByteArray, Error>

Available on crate feature v2_66 only.
Query the TLS backend for TLS channel binding data of @type_ for @self. Read more
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fn set_advertised_protocols(&self, protocols: impl IntoStrV)

Available on crate feature v2_60 only.
Sets the list of application-layer protocols to advertise that the caller is willing to speak on this connection. The Application-Layer Protocol Negotiation (ALPN) extension will be used to negotiate a compatible protocol with the peer; use g_tls_connection_get_negotiated_protocol() to find the negotiated protocol after the handshake. Specifying None for the the value of @protocols will disable ALPN negotiation. Read more
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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>,