pub enum HostRequest {
Show 21 variants
RequestProtocol {
payload: ProtocolRequest,
control_handle: HostControlHandle,
},
Shutdown {
control_handle: HostControlHandle,
},
WatchState {
responder: HostWatchStateResponder,
},
SetLocalData {
payload: HostData,
control_handle: HostControlHandle,
},
WatchPeers {
responder: HostWatchPeersResponder,
},
SetLocalName {
local_name: String,
responder: HostSetLocalNameResponder,
},
SetDeviceClass {
device_class: DeviceClass,
responder: HostSetDeviceClassResponder,
},
StartDiscovery {
payload: HostStartDiscoveryRequest,
control_handle: HostControlHandle,
},
SetConnectable {
enabled: bool,
responder: HostSetConnectableResponder,
},
SetDiscoverable {
enabled: bool,
responder: HostSetDiscoverableResponder,
},
Connect {
id: PeerId,
responder: HostConnectResponder,
},
Disconnect {
id: PeerId,
responder: HostDisconnectResponder,
},
Pair {
id: PeerId,
options: PairingOptions,
responder: HostPairResponder,
},
Forget {
id: PeerId,
responder: HostForgetResponder,
},
EnableBackgroundScan {
enabled: bool,
control_handle: HostControlHandle,
},
EnablePrivacy {
enabled: bool,
control_handle: HostControlHandle,
},
SetBrEdrSecurityMode {
bredr_security_mode: BrEdrSecurityMode,
control_handle: HostControlHandle,
},
SetLeSecurityMode {
le_security_mode: LeSecurityMode,
control_handle: HostControlHandle,
},
SetPairingDelegate {
input: InputCapability,
output: OutputCapability,
delegate: ClientEnd<PairingDelegateMarker>,
control_handle: HostControlHandle,
},
RestoreBonds {
bonds: Vec<BondingData>,
responder: HostRestoreBondsResponder,
},
_UnknownMethod {
ordinal: u64,
control_handle: HostControlHandle,
method_type: MethodType,
},
}
Expand description
Interface for interacting with a Bluetooth host device (bt-host)
Variants§
RequestProtocol
Fulfills a given protocol request. bt-host will start processing FIDL messages. If the request cannot be fulfilled, the bt-host device will close its end of the given channel.
Shutdown
Shuts down the host, ending all active Bluetooth procedures:
- All FIDL interface handles associated with this host are closed and all connections initiated via FIDL clients are severed.
- All scan, discovery, and advertising procedures are stopped.
- Bonded devices are cleared and removed from the auto-connect lists.
- Auto-connected peripherals are disconnected.
This effectively resets the host to its initial state and the host remains available for future requests.
The Host will continue to send OnDeviceUpdated events as procedures get terminated.
The Host protocol will close when shutdown is complete.
Fields
control_handle: HostControlHandle
WatchState
Returns information about the Bluetooth host subsystem and controller managed by this Host instance. If there has been no change to the state since the last call to this method, the response will be deferred until there is a change.
The returned info
structure will be populated with the current state of the bt-host
device. However the active
parameter will never be populated. This field is managed
by a higher layer.
Fields
responder: HostWatchStateResponder
SetLocalData
Assigns local data to this host.
WatchPeers
Monitors updates for connectable peers known to the system. Replies only when peers have been added, modified, or removed since the most recent call to WatchPeers().
Peers are added and updated as new information is obtained during discovery, connection establishment, and bonding procedures.
Peers are removed either:
a. explicitly via [fuchsia.bluetooth.host.Host/Forget
], or
b. no transmission has been received from the peer for an internally determined duration
of time and the peer is neither connected nor bonded.
- response
updated
Peers that were added or updated since the last call to WatchPeers(). - response
removed
Ids of peers that were removed since the last call to WatchPeers().
Fields
responder: HostWatchPeersResponder
SetLocalName
Sets the local name for this host device.
SetDeviceClass
Sets the device class for this host device.
StartDiscovery
Initiates a general discovery procedure for BR/EDR and LE devices. On success, discovered
peers can be monitored using the [fuchsia.bluetooth.host/Host.WatchPeers
] method. On Error,
an epitaph will be returned from token
. If the device does not support BR/EDR, only LE
discovery will be performed.
On the LE transport, only general-discoverable and connectable peripherals will be reported.
Discovery will continue until all discovery sessions are closed.
- request
token
The DiscoverySession protocol that must be held open as long as discovery should be enabled. Closing it will stop discovery if no other sessions are open.
SetConnectable
Sets whether this host should be connectable.
SetDiscoverable
Sets whether this host should be discoverable.
Connect
Establish a BR/EDR and/or LE connection to the peer with identifier id
:
-
If the peer is known to support the BR/EDR transport then a logical link over that transport will be established to the device. If the connection attempt is successful, local services registered using “RequestProfile()” will be available to the peer. Traditional services discovered on the peer will be notified to local services asynchronously.
-
If the peer is known to support the LE transport then a logical link over that transport will be established to the device. If the connection attempt is successful, GATT services in the local database (populated via RequestGattServer()) will become available to the peer. Similarly, remote GATT services that are discovered on the peer will become available to holders of a gatt.Client capability and to device drivers that can bind to the bt-gatt-svc class of devices.
The result of the procedure will be communicated via status
. If the remote device
supports both BR/EDR and LE transports and a link cannot be established over both, then an
error Status will be returned and neither transport will be connected.
Disconnect
Terminate all connections (BR/EDR or LE) to the remote peer with identifier id
.
- request
id
The identifier of the peer to disconnect.
- response
status
Contains an error if either LE or BR/EDR transport fails to disconnect. Contains success when both transports are successfully disconnected or if the peer is already disconnected.
Pair
Initiates pairing to the peer with the supplied id
and options
. Returns an error if no
connected peer with id
is found or the pairing procedure fails.
If options
specifies a higher security level than the current pairing, this method
attempts to raise the security level. Otherwise this method has no effect and returns
success.
NOTE: This is intended to satisfy test scenarios that require pairing procedures to be initiated without relying on service access. In normal operation, Bluetooth security is enforced during service access.
Forget
Deletes a peer from the Bluetooth host. If the peer is connected, it will be disconnected.
device_id
will no longer refer to any peer, even if a device with the same address is
discovered again.
Returns success after no peer exists that’s identified by device_id
(even if it didn’t
exist before Forget), failure if the peer specified by device_id
could not be
disconnected or deleted and still exists.
EnableBackgroundScan
Enable or disable a passive LE background scan. When enabled, the bt-host device will continuously perform a passive LE scan in the background when no device discovery sessions are active and accept connection requests from bonded peripherals.
EnablePrivacy
Enable or disable the LE privacy feature. When enabled, the bt-host device will use a private device address in all LE procedures. When disabled, the public identity address will be used instead (which is the default).
SetBrEdrSecurityMode
Set the GAP BR/EDR Security Mode of the host. bt-host only supports encrypted, connection-based security modes, i.e. Mode 4 and Secure Connections Only mode. If the security mode is set to Secure Connections Only, any existing encrypted connections which do not meet the security requirements of Secure Connections Only mode will be disconnected.
SetLeSecurityMode
Set the GAP LE Security Mode of the host. bt-host only supports encrypted, connection-based security modes, i.e. Mode 1 and Secure Connections Only mode. If the security mode is set to Secure Connections Only, any existing encrypted connections which do not meet the security requirements of Secure Connections Only mode will be disconnected.
SetPairingDelegate
Assigns the pairing delegate that will respond to authentication challenges using the given I/O capabilities. Calling this method cancels any on-going pairing procedure started using a previous delegate. Pairing requests will be rejected if no PairingDelegate has been assigned.
Fields
input: InputCapability
output: OutputCapability
delegate: ClientEnd<PairingDelegateMarker>
control_handle: HostControlHandle
RestoreBonds
Restores existing bonded devices to the host. An authenticated session will be established for future connections using the provided bonding data.
If bonding data for the LE transport is available, then the host will automatically establish a connection when the peer is in range and connectable.
If any of the entries in bonds
could not be restored, then they will be returned in
errors
. This can happen for entries that are malformed and for peers that are already
known to the bt-host. An empty errors
list indicates that all bonds were successfully
restored.
_UnknownMethod
An interaction was received which does not match any known method.
Fields
This variant is marked as non-exhaustive
control_handle: HostControlHandle
method_type: MethodType
Implementations§
source§impl HostRequest
impl HostRequest
pub fn into_request_protocol( self ) -> Option<(ProtocolRequest, HostControlHandle)>
pub fn into_shutdown(self) -> Option<HostControlHandle>
pub fn into_watch_state(self) -> Option<HostWatchStateResponder>
pub fn into_set_local_data(self) -> Option<(HostData, HostControlHandle)>
pub fn into_watch_peers(self) -> Option<HostWatchPeersResponder>
pub fn into_set_local_name(self) -> Option<(String, HostSetLocalNameResponder)>
pub fn into_set_device_class( self ) -> Option<(DeviceClass, HostSetDeviceClassResponder)>
pub fn into_start_discovery( self ) -> Option<(HostStartDiscoveryRequest, HostControlHandle)>
pub fn into_set_connectable(self) -> Option<(bool, HostSetConnectableResponder)>
pub fn into_set_discoverable( self ) -> Option<(bool, HostSetDiscoverableResponder)>
pub fn into_connect(self) -> Option<(PeerId, HostConnectResponder)>
pub fn into_disconnect(self) -> Option<(PeerId, HostDisconnectResponder)>
pub fn into_pair(self) -> Option<(PeerId, PairingOptions, HostPairResponder)>
pub fn into_forget(self) -> Option<(PeerId, HostForgetResponder)>
pub fn into_enable_background_scan(self) -> Option<(bool, HostControlHandle)>
pub fn into_enable_privacy(self) -> Option<(bool, HostControlHandle)>
pub fn into_set_br_edr_security_mode( self ) -> Option<(BrEdrSecurityMode, HostControlHandle)>
pub fn into_set_le_security_mode( self ) -> Option<(LeSecurityMode, HostControlHandle)>
pub fn into_set_pairing_delegate( self ) -> Option<(InputCapability, OutputCapability, ClientEnd<PairingDelegateMarker>, HostControlHandle)>
pub fn into_restore_bonds( self ) -> Option<(Vec<BondingData>, HostRestoreBondsResponder)>
sourcepub fn method_name(&self) -> &'static str
pub fn method_name(&self) -> &'static str
Name of the method defined in FIDL