fuchsia.bluetooth.bredr

Audio Priority Direction extension. Used to put the channel in a mode where A2DP packets are prioritized over other packets in the source or sink direction.

SetPriority

Request

Name	Type
`priority`	`A2dpDirectionPriority`

Response

Name	Type
`payload`	`AudioDirectionExt_SetPriority_Result`

AudioOffloadController

Protocol representing the controller actively encoding offloaded audio to or from this channel. Closing the protocol will stop the encoding, which can also be done using the Stop() if synchronization is required. If the controller fails to start audio offloading, an epitaph will be sent when this is closed.

This channel will be closed with a ZX_ERR_NOT_SUPPORTED epitaph if the audio offload configuration for the controller is not supported.

This channel will be closed with a ZX_ERR_UNAVAILABLE epitaph if the controller sends an error.

This channel will be closed with a ZX_ERR_ALREADY_BOUND epitaph if audio offloading starting or stopping is already in progress/complete on another channel.

This channel will be closed with a ZX_ERR_INTERNAL epitaph if commands are issued when audio offloading is not started.

OnStarted

Sent from the server when the audio offloading is started successfully. Only sent once per protocol.

Response

<EMPTY>

Stop

Request the audio offloading be stopped. This call will be responded to before the protocol is closed on the server side.

Request

<EMPTY>

Response

Name	Type
`payload`	`AudioOffloadController_Stop_Result`

AudioOffloadExt

Audio Offload Extension. Used to retrieve offloading capability and supported features.

GetSupportedFeatures

Returns the vendor features supported on this chipset

Request

<EMPTY>

Response

Name	Type
`payload`	`AudioOffloadExt_GetSupportedFeatures_Result`

StartAudioOffload

Begin the audio encoding hardware offloading process

Request

Name	Type
`configuration`	`AudioOffloadConfiguration`
`controller`	`server_end:AudioOffloadController`

ConnectionReceiver

Represents a service which is registered by this profile. Closing this protocol will remove the service registration.

Deprecated: 27

Connected

Called when a peer connects to this service. The channel connected is delivered with parameters in channel. protocol will contain a protocol list up to the point connected (for example, if L2CAP is connected, it will contain the L2CAP protocol and specify the PSM connected)

Request

Name	Type
`peer_id`	`fuchsia.bluetooth/PeerId`
`channel`	`Channel`
`protocol`	`ProtocolDescriptorList`

OnRevoke

An event produced by a FIDL server to signal that the registered service should be revoked and removed from the Service Discovery Protocol database. It is expected that this protocol will be subsequently closed after issuing this event.

Response

<EMPTY>

ConnectionReceiver2

Represents a service which is registered by this profile. Closing this protocol will remove the service registration.

Added: 27

Connected

Request

Name	Type
`payload`	`ConnectionReceiver2ConnectedRequest`

Response

Name	Type
`payload`	`ConnectionReceiver2_Connected_Result`

OnRevoke

Signals that the registered service should be revoked and removed from the Service Discovery Protocol database. When the protocol is closed, the service has been removed.

Response

<EMPTY>

L2capParametersExt

L2CAP Parameters Extension. Used to configure L2CAP channel parameters on an open channel.

RequestParameters

Request a L2CAP channel parameter update. request indicates the desired parameters, and new indicates the new parameters (which may differ from the requested parameters if they are rejected/modified). Currently only the following parameters can be changed:

flush_timeout

Request

Name	Type
`request`	`ChannelParameters`

Response

Name	Type
`payload`	`L2capParametersExt_RequestParameters_Result`

Profile

Service provides Bluetooth BR/EDR profiles a way to register a service definition, making a profile discoverable by peers. Registered services can receive L2CAP connections made to the advertised records, and can open new connections on peers.

Advertise

These services will be discoverable via Service Discovery Protocol server. All services advertising the same channel must be added at once - if services are already registered on any channel advertised, registration will fail, the receiver will be closed with ZX_ERR_ALREADY_BOUND and an error will be returned. The ConnectionReceiver will get calls for connections to the channels included in the protocol_descriptor or alternative_protocol_descriptors in the services advertised. The receiver will be closed if there are any errors advertising.

The ConnectionReceiver::OnRevoke event can be used to synchronize revoking the advertisement, if necessary. Closing the ConnectionReceiver protocol will also stop advertising these services.

If the advertisement cannot be made for any reason, an error of INVALID_ARGUMENTS will be returned and the receiver will be closed with a suitable epitaph. Returns the set of services that are registered via the Service Discovery Protocol server. The returned services may differ from the input services if any L2CAP protocol descriptors request PSM_DYNAMIC. In this case, the Profile server shall assign a valid PSM and include this value in the returned services.

Request

Name	Type
`payload`	`ProfileAdvertiseRequest`

Response

Name	Type
`payload`	`Profile_Advertise_Result`

Connect

Connect an L2CAP or RFCOMM channel to the connected peer identified by peer_id using the desired connection parameters listed. Dynamic PSMs can be specified in connection.

Returns the channel connected once established, or an error code if the channel could not be connected.

Request

Name	Type
`peer_id`	`fuchsia.bluetooth/PeerId`
`connection`	`ConnectParameters`

Response

Name	Type
`payload`	`Profile_Connect_Result`

ConnectSco

Attempt to establish a synchronous connection to peer_id configured using params.

If initiator is true, a connection request will be sent. Only 1 parameter may be specified.

If initiator is false, the host will attempt to accept the next connection request using the parameters given in order. The parameters will be tried in order until either a connection is successful, all parameters have been rejected (ScoErrorCode.PARAMETERS_REJECTED), or the procedure is canceled.

The result of the connection attempt and the parameters used for the connection will be returned with connection. Dropping connection will cancel the request.

Request

Name	Type
`payload`	`ProfileConnectScoRequest`

Search

Register a search for services on newly connected peers. The SearchResults protocol will be used to report results for this search. Only one of service_uuid or full_uuid must be present. Any service result with a service matching the specified UUID will be returned with the additional attributes in attr_ids. If both service_uuid and full_uuid are present, then ZX_ERR_INVALID_ARGS will be returned. If attr_ids is empty or omitted, all attributes will be requested. The additional attribute BLUETOOTH_PROTOCOL_DESCRIPTOR_LIST is always requested. See the Bluetooth Spec v5.2, Vol 3, Part B, Section 5) and relevant profile specification documents.

Request

Name	Type
`payload`	`ProfileSearchRequest`

ScoConnection

A SCO connection. The connection is pending until the OnConnectionComplete event is sent, which will always arrive first. If the connection fails, the protocol will be closed after the error is delivered. If methods are called before the OnConnectionComplete event, they will and the protocol will be closed.

OnConnectionComplete

Called upon successful connection establishment or failure.

Response

Name	Type
`payload`	`ScoConnectionOnConnectionCompleteRequest`

Read

Read the next inbound SCO payload. Hangs until new data is received. Only one Read request may be pending at a time. Additional requests will result in protocol closure.

Request

<EMPTY>

Response

Name	Type
`payload`	`ScoConnection_Read_Result`

Write

Write data to the SCO connection. If Write tries to send more data than max_tx_data_size, the protocol will be closed. Only one Write request may be pending at a time. Additional requests will result in protocol closure.

Request

Name	Type
`payload`	`ScoConnectionWriteRequest`

Response

Name	Type
`payload`	`ScoConnection_Write_Result`

SearchResults

Represents an active search which can produce results when peers are connected. Closing this protocol will result in the associated search not being performed on new connected peers.

ServiceFound

Called when a search this client added finds a matching service on a peer. peer_id is the peer the service was found on. protocol includes the ProtocolDescriptorList in the service record if it exists (it is also included in attributes.) attributes contains all attributes requested from the search that are present on the peer record. It may also include additional attributes. Each ServiceFound call should be acknowledged by replying. A limited amount of unacknowledged results will be sent on the channel. Results may be dropped if results are received while too many results are unacknowledged.

Request

Name	Type
`peer_id`	`fuchsia.bluetooth/PeerId`
`protocol`	`ProtocolDescriptorList`
`attributes`	`vector<Attribute>:512`

Response

Name	Type
`payload`	`SearchResults_ServiceFound_Result`

STRUCTS

AudioDirectionExt_SetPriority_Response

<EMPTY>

AudioOffloadController_Stop_Response

<EMPTY>

ConnectionReceiver2_Connected_Response

<EMPTY>

L2capParametersExt_RequestParameters_Response

Field	Type	Description	Default
`new`	`ChannelParameters`		No default

Profile_Connect_Response resource

Field	Type	Description	Default
`channel`	`Channel`		No default

ScoConnection_Write_Response

<EMPTY>

SearchResults_ServiceFound_Response

<EMPTY>

ENUMS

A2dpDirectionPriority strict

Type: uint32

A2DP packet priority used in AudioDirectionExt. NORMAL should be used whenever audio is not streaming, and SOURCE/SINK should match the direction audio is being streamed.

Name	Value	Description
NORMAL	`1`
SOURCE	`2`
SINK	`3`

AudioBitsPerSample flexible

Type: uint8

Name	Value	Description
BPS_16	`1`
BPS_24	`2`
BPS_32	`3`

AudioChannelMode flexible

Type: uint8

Name	Value	Description
MONO	`0`
STEREO	`1`

AudioSamplingFrequency flexible

Type: uint8

Name	Value	Description
HZ_44100	`1`
HZ_48000	`2`
HZ_88200	`3`
HZ_96000	`4`

DataPath strict

Type: uint8

Indicates the audio transport that should be used for the data on a synchronous connection.

Name	Value	Description
HOST	`1`	The HCI transport. Data will be sent/received through the ScoConnection protocol.
OFFLOAD	`2`	Transport audio data directly between the controller and the audio hardware. The ScoConnection protocol will not be used to send/receive data.
TEST	`3`	The audio test mode transport. See Core Spec v5.2, Vol 4, Part E, Section 7.6.2 for details.

HfpParameterSet flexible

Type: uint8

Codec parameter sets defined in the Hands-Free Profile specification (v1.8, section 5.7).

Name	Value	Description
T1	`1`
T2	`2`
S1	`3`
S2	`4`
S3	`5`
S4	`6`
D0	`7`
D1	`8`

ProtocolIdentifier flexible

Type: uint16

Defined Protocol Identifiers for the Protocol Descriptor We intentionally omit deprecated profile identifiers. From Bluetooth Assigned Numbers: https://www.bluetooth.com/specifications/assigned-numbers/service-discovery

Name	Value	Description
SDP	`1`
RFCOMM	`3`
ATT	`7`
OBEX	`8`
BNEP	`15`
HIDP	`17`
HARDCOPY_CONTROL_CHANNEL	`18`
HARDCOPY_DATA_CHANNEL	`20`
HARDCOPY_NOTIFICATION	`22`
AVCTP	`23`
AVDTP	`25`
MCAP_CONTROL_CHANNEL	`30`
MCAP_DATA_CHANNEL	`31`
L2CAP	`256`

RxPacketStatus strict

Type: uint8

Inbound SCO data has a RxPacketStatus that indicates possible data loss or corruption.

Name	Value	Description
CORRECTLY_RECEIVED_DATA	`0`	The controller marked all data as "good data".
POSSIBLY_INVALID_DATA	`1`	Some of the data may have errors.
NO_DATA_RECEIVED	`2`	All data was lost. The payload will be empty.
DATA_PARTIALLY_LOST	`3`	Some of the data was lost, and the lost regions of data will be set to 0.

ScoErrorCode flexible

Type: uint32

Name	Value	Description
FAILURE	`1`
CANCELLED	`2`
INVALID_ARGUMENTS	`3`
PARAMETERS_REJECTED	`4`

ServiceClassProfileIdentifier flexible

Type: uint16

Identifiers that are valid for Bluetooth Classes / Profiles. We intentionally omit classes and profile IDs that are unsupported, deprecated, or reserved for use by Fuchsia Bluetooth. These numbers are sourced from the Bluetooth Assigned Numbers for SDP. https://www.bluetooth.com/specifications/assigned-numbers/service-discovery

Name	Value	Description
SERIAL_PORT	`4353`	Serial Port Profile (SPP)
DIALUP_NETWORKING	`4355`	Dial-up Networking Profile (DUN)
OBEX_OBJECT_PUSH	`4357`	Object Push Profile (OPP)
OPEX_FILE_TRANSFER	`4358`	File Transfer Profile (FTP)
HEADSET	`4360`	Headset Profile (HSP)
HEADSET_AUDIO_GATEWAY	`4370`
HEADSET_HS	`4401`
AUDIO_SOURCE	`4362`	Advanced Audio Distribution Profile (A2DP)
AUDIO_SINK	`4363`
ADVANCED_AUDIO_DISTRIBUTION	`4365`
AV_REMOTE_CONTROL_TARGET	`4364`	Audio/Video Remote Control Profile (AVRCP)
AV_REMOTE_CONTROL	`4366`
AV_REMOTE_CONTROL_CONTROLLER	`4367`
PANU	`4373`	Personal Area Networking (PAN)
NAP	`4374`
GN	`4375`
HANDSFREE	`4382`	Hands-Free Profile (HFP)
HANDSFREE_AUDIO_GATEWAY	`4383`
HUMAN_INTERFACE_DEVICE	`4388`	Human Interface Device Profile (HID)
SIM_ACCESS	`4397`	Sim Access Profile (SAP)
PHONEBOOK_PCE	`4398`	Phonebook Access Profile (PBAP)
PHONEBOOK_PSE	`4399`
PHONEBOOK	`4400`
MESSAGE_ACCESS_SERVER	`4402`	Message Access Profile (MAP)
MESSAGE_NOTIFICATION_SERVER	`4403`
MESSAGE_ACCESS_PROFILE	`4404`
MPS_PROFILE	`4410`	Multi-Profile Specification (MPS)
MPS_CLASS	`4411`
PNP_INFORMATION	`4608`	Device Identification Profile (DI)
GENERIC_NETWORKING	`4609`	Generic Networking
GENERIC_FILE_TRANSFER	`4610`	Generic File Transfer
GENERIC_AUDIO	`4611`	Generic Audio
GENERIC_TELEPHONY	`4612`	Generic Telephony
VIDEO_SOURCE	`4867`	Video Distribution Profile (VDP)
VIDEO_SINK	`4868`
VIDEO_DISTRIBUTION	`4869`
HDP	`5120`	Health Device Profile (HDP)
HDP_SOURCE	`5121`
HDP_SINK	`5122`

TABLES

Attribute

A generic attribute, used for protocol information;

Ordinal	Field	Type	Description
1	`id`	`uint16`	Required.
2	`element`	`DataElement`	Required.

AudioAacSupport

Ordinal	Field	Type	Description

AudioOffloadConfiguration

Ordinal	Field	Type
1	`codec`	`AudioOffloadFeatures`
2	`max_latency`	`uint16`
3	`scms_t_enable`	`bool`
4	`sampling_frequency`	`AudioSamplingFrequency`
5	`bits_per_sample`	`AudioBitsPerSample`
6	`channel_mode`	`AudioChannelMode`
7	`encoded_bit_rate`	`uint32`
8	`encoder_settings`	`AudioEncoderSettings`

AudioOffloadExt_GetSupportedFeatures_Response

Ordinal	Field	Type	Description
1	`audio_offload_features`	`vector<AudioOffloadFeatures>`

AudioSbcSupport

Ordinal	Field	Type	Description

Channel resource

A channel opened to a peer.

Ordinal	Field	Type	Description
1	`socket`	`handle<socket>`	Deprecated. Socket interface for sending/receiving SDUs on the channel. The channel will be closed if both this socket and the Connection are closed. Always present.
2	`channel_mode`	`ChannelMode`	Channel mode accepted by the peer. Always present.
3	`max_tx_sdu_size`	`uint16`	Maximum SDU size the peer is capable of accepting. Always present.
4	`ext_direction`	`client_end:AudioDirectionExt`	Audio Direction priority extension. See `AudioDirectionExt`. Present only if supported.
5	`flush_timeout`	`zx/Duration`
6	`ext_l2cap`	`client_end:L2capParametersExt`	L2CAP parameter extension. See `L2capParametersExt`. Always present for L2CAP Channels, never present for other Channels.
7	`ext_audio_offload`	`client_end:AudioOffloadExt`	Audio offload extension. See `AudioOffloadExt`. Present only if supported.
8	`connection`	`client_end:fuchsia.bluetooth/Channel`	Protocol for sending/receiving SDUs on the channel. If present, closing this and `socket` will close the channel.

ConnectionReceiver2ConnectedRequest resource

Ordinal	Field	Type
1	`peer_id`	`fuchsia.bluetooth/PeerId`
2	`channel`	`Channel`
3	`protocol`	`ProtocolDescriptorList`

Information

Human-readable information about a service. Strings are encoded in UTF-8. See Bluetooth Specification v5.2 Vol 3, Part B, Sections 5.1.15 through 5.1.17

Ordinal	Field	Type	Description
1	`language`	`string:2`	Language that the other fields in this table are in. Must be two characters long and a valid ICO 639:1988 identifier. Must be present.
2	`name`	`string:1024`	Service name
3	`description`	`string:1024`	A human-readable description
4	`provider`	`string:1024`	The provider of this service (person or organization)

L2capParameters

The parameters associated with a connection over the L2CAP protocol.

Ordinal	Field	Type	Description
1	`psm`	`uint16`	Required. L2CAP PSM for the connection. See the defined PSMs in `service.fidl`.
2	`parameters`	`ChannelParameters`	Optional. L2CAP channel parameters.

ProfileAdvertiseRequest resource

Ordinal	Field	Type	Description
1	`services`	`vector<ServiceDefinition>:32`	The set of definitions describing the services that will be registered. Required.
2	`receiver`	`client_end:ConnectionReceiver`	Receives connections made to the advertised services. Either `receiver` or `connection_receiver` is required. Deprecated: 27
3	`parameters`	`ChannelParameters`	The default parameters used to configure L2CAP connections on the `receiver`. Optional. See `ChannelParameters` for defaults.
4	`connection_receiver`	`client_end:ConnectionReceiver2`	Receives connections made to the advertised services. Either `receiver` or `connection_receiver` is required. Added: 27

ProfileConnectScoRequest resource

Ordinal	Field	Type	Description
1	`peer_id`	`fuchsia.bluetooth/PeerId`	Required.
2	`initiator`	`bool`	Required.
3	`params`	`vector<ScoConnectionParameters>`	Required.
4	`connection`	`server_end:ScoConnection`	Required.

ProfileDescriptor

A description of a profile that this service conforms to. See Bluetooth Specification v5.2 Vol 3, Part B, Section 5.1.11

Ordinal	Field	Type	Description
1	`profile_id`	`ServiceClassProfileIdentifier`	Required.
2	`major_version`	`uint8`	Required.
3	`minor_version`	`uint8`	Required.

ProfileSearchRequest resource

Ordinal	Field	Type	Description
1	`service_uuid`	`ServiceClassProfileIdentifier`	Required - only one of `service_uuid` or `full_uuid` should be present.
2	`attr_ids`	`vector<uint16>:512`	Optional.
3	`results`	`client_end:SearchResults`	Required.
4	`full_uuid`	`fuchsia.bluetooth/Uuid`	Required - only one of `full_uuid` or `service_uuid` should be present. Added: 24

Profile_Advertise_Response

Ordinal	Field	Type	Description
1	`services`	`vector<ServiceDefinition>:32`	Set of service definitions as registered by the SDP server, updated with definitions for requested dyanmic PSM & RFCOMM assignments.

ProtocolDescriptor

Identifies a communications protocol along with protocol-specific parameters. Usually used to describe a protocol endpoint in a ProtocolDescriptorList. Use PSM_DYNAMIC in the L2CAP protocol-specific params to specify a PSM that is dynamically assigned.

Ordinal	Field	Type	Description
1	`protocol`	`ProtocolIdentifier`	Required.
2	`params`	`vector<DataElement>:255`	Required.

RfcommParameters

The parameters associated with a connection over the RFCOMM protocol.

Ordinal	Field	Type	Description
1	`channel`	`RfcommChannel`	Required. RFCOMM channel for the connection.

ScoConnectionParameters

Ordinal	Field	Type	Description
1	`parameter_set`	`HfpParameterSet`	Set of SCO parameters from the Hands-Free Profile specification. Required.
2	`air_coding_format`	`fuchsia.bluetooth/AssignedCodingFormat`	The over-the-air coding format used for transmitted and received data. Required.
3	`air_frame_size`	`uint16`	Frame size produced by the codec in the context of over-the-air coding. Required.
4	`io_bandwidth`	`uint32`	Host-controller data rate in bytes/second. Required.
5	`io_coding_format`	`fuchsia.bluetooth/AssignedCodingFormat`	The coding format used over the transport. Required.
6	`io_frame_size`	`uint16`	The number of bits in each sample/frame of data. Required.
7	`io_pcm_data_format`	`fuchsia.hardware.audio/SampleFormat`	The data format over the transport for linear samples. Ignored for non-linear coding formats. Optional. SIGNED indicates 2's complement sign encoding. FLOAT is not supported.
8	`io_pcm_sample_payload_msb_position`	`uint8`	For linear samples, indicates how many bit positions the MSB of the sample is away from the MSB of the data. Ignored for non-linear coding formats. Optional. Default: 0.
9	`path`	`DataPath`	The data transport. Required.
10	`max_tx_data_size`	`uint16`	Indicates the maximum data buffer size that may be sent. Optional. Only present after a connection has successfully been connected. Ignored when requesting a connection.

ScoConnectionWriteRequest

Ordinal	Field	Type	Description
1	`data`	`vector<uint8>`

ScoConnection_Read_Response

Ordinal	Field	Type	Description
1	`status_flag`	`RxPacketStatus`
2	`data`	`vector<uint8>`

ServiceDefinition

Definition for a service that is to be advertised as available via Bluetooth BR/EDR.

Ordinal	Field	Type	Description
1	`service_class_uuids`	`vector<fuchsia.bluetooth/Uuid>:255`	UUIDs of service classes that this service record conforms to. This field is required - all advertised services must have at least one service class.
2	`protocol_descriptor_list`	`ProtocolDescriptorList`	Specification for the primary protocol that can be used to gain access to this service, with their protocol-specific identifiers. This is ordered from lowest level (typically L2CAP) to highest.
3	`additional_protocol_descriptor_lists`	`vector<ProtocolDescriptorList>:255`	Additional protocol descriptor lists, if the service requires more channels in addition to the main service.
4	`profile_descriptors`	`vector<ProfileDescriptor>:255`	Bluetooth profiles that are supported by this service.
5	`information`	`vector<Information>:85`	Human-readable service information, in one or more languages. The first set of information is considered the primary language.
6	`additional_attributes`	`vector<Attribute>:65023`	Additional attributes to be included in the Service Definition for specific services or profiles. All of these attributes should have an Attribute ID above 0x0200.

UNIONS

AudioDirectionExt_SetPriority_Result strict

Ordinal	Variant	Type
1	`response`	`AudioDirectionExt_SetPriority_Response`
2	`err`	`fuchsia.bluetooth/ErrorCode`
3	`framework_err`	`internal`

AudioEncoderSettings flexible

Ordinal	Variant	Type	Description
1	`sbc`	`fuchsia.media/SbcEncoderSettings`
2	`aac`	`fuchsia.media/AacEncoderSettings`

AudioOffloadController_Stop_Result strict

Ordinal	Variant	Type	Description
1	`response`	`AudioOffloadController_Stop_Response`
3	`framework_err`	`internal`

AudioOffloadExt_GetSupportedFeatures_Result strict

Ordinal	Variant	Type	Description
1	`response`	`AudioOffloadExt_GetSupportedFeatures_Response`
3	`framework_err`	`internal`

AudioOffloadFeatures flexible

Audio offload features used in AudioOffloadExt.

Ordinal	Variant	Type	Description
1	`sbc`	`AudioSbcSupport`
2	`aac`	`AudioAacSupport`

ConnectParameters strict

The channel and relevant parameters for a connection.

Ordinal	Variant	Type	Description
1	`l2cap`	`L2capParameters`	An L2CAP connection.
2	`rfcomm`	`RfcommParameters`	An RFCOMM connection.

ConnectionReceiver2_Connected_Result strict

Ordinal	Variant	Type	Description
1	`response`	`ConnectionReceiver2_Connected_Response`
3	`framework_err`	`internal`

DataElement flexible

A DataElement is one element in a SDP record. SDP attributes and other parameters are expresssed in DataElements.

Ordinal	Variant	Type
1	`int8`	`int8`
2	`int16`	`int16`
3	`int32`	`int32`
4	`int64`	`int64`
5	`uint8`	`uint8`
6	`uint16`	`uint16`
7	`uint32`	`uint32`
8	`uint64`	`uint64`
9	`str`	`vector<uint8>:1024`
10	`url`	`fuchsia.url/Url`
11	`uuid`	`fuchsia.bluetooth/Uuid`
12	`b`	`bool`
13	`sequence`	`vector<DataElement?>:255`
14	`alternatives`	`vector<DataElement?>:255`

L2capParametersExt_RequestParameters_Result strict

Ordinal	Variant	Type	Description
1	`response`	`L2capParametersExt_RequestParameters_Response`
3	`framework_err`	`internal`

Profile_Advertise_Result strict

Ordinal	Variant	Type
1	`response`	`Profile_Advertise_Response`
2	`err`	`fuchsia.bluetooth/ErrorCode`
3	`framework_err`	`internal`

Profile_Connect_Result strict resource

Ordinal	Variant	Type
1	`response`	`Profile_Connect_Response`
2	`err`	`fuchsia.bluetooth/ErrorCode`
3	`framework_err`	`internal`

ScoConnectionOnConnectionCompleteRequest flexible

Ordinal	Variant	Type	Description
1	`connected_params`	`ScoConnectionParameters`	On success, contains the parameters that were used to establish the connection.
2	`error`	`ScoErrorCode`	On failure, specifies the reason connection establishment failed.

ScoConnection_Read_Result strict

Ordinal	Variant	Type	Description
1	`response`	`ScoConnection_Read_Response`
3	`framework_err`	`internal`

ScoConnection_Write_Result strict

Ordinal	Variant	Type	Description
1	`response`	`ScoConnection_Write_Response`
3	`framework_err`	`internal`

SearchResults_ServiceFound_Result strict