CTAPHID transport layer for USB HID framed CTAP2/U2F traffic. More...

#include "mod_fido2/ctaphid.h"
#include "mod_fido2/ctap2.h"
#include "mod_fido2/u2f.h"
#include "mod_fido2/Fido2Ui.h"
#include "cdc_hal/IDisplay.h"
#include "cdc_log.h"
#include "cdc_core/feature_flags.h"
#include <esp_attr.h>
#include <string.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <freertos/semphr.h>

Namespaces
namespace	cdc
namespace	cdc::mod_fido2

Macros
#define	CTAPHID_DEBUG_PACKETS DEBUG_MODE
	Enable verbose packet-level debug logging when feature flags allow it.
#define	CTAPHID_MSG_TIMEOUT_MS 500
#define	CTAPHID_MAX_CHANNELS 8
#define	CTAPHID_RESPONSE_QUEUE_SIZE 8
#define	CTAPHID_RATE_LIMIT_WINDOW_MS 1000
	Runtime state and channel bookkeeping for CTAPHID transport.
#define	CTAPHID_RATE_LIMIT_MAX_CMDS 200

Functions
bool	cdc::mod_fido2::fido2_usb_write (const uint8_t *buffer)
	Sends one CTAPHID packet over USB HID.
static ctaphid_channel_t *	find_channel (uint32_t cid)
	Returns the channel record for a given channel identifier.
static void	init_channel_slot (int index, uint32_t cid)
	Allocates or reuses a channel slot for the provided channel identifier.
static ctaphid_channel_t *	alloc_channel (uint32_t cid)
static uint32_t	allocate_cid (void)
	Allocates the next non-broadcast CTAPHID channel identifier.
static void	build_init_packet (uint8_t packet, uint32_t cid, uint8_t cmd, uint16_t bcnt, const uint8_t data, uint16_t data_len)
	Builds a CTAPHID initialization packet.
static void	build_cont_packet (uint8_t packet, uint32_t cid, uint8_t seq, const uint8_t data, uint16_t data_len)
	Builds a CTAPHID continuation packet.
static void	prepare_response (uint32_t cid, uint8_t cmd, const uint8_t *data, uint16_t len)
	Stores a command response so it can be packetized and read out later.
static void	prepare_response_on (ctaphid_channel_t ch, uint32_t send_cid, uint8_t cmd, const uint8_t data, uint16_t len)
	Stores a response on the given channel slot but addressed to a different CID.
static void	handle_init (uint32_t cid, const uint8_t *data, uint16_t len)
	Handles CTAPHID INIT and returns negotiated channel/capability data.
static void	handle_ping (uint32_t cid, const uint8_t *data, uint16_t len)
	Handles CTAPHID PING by echoing the request payload.
static void	handle_wink (uint32_t cid)
	Handles CTAPHID WINK requests.
static void	handle_cancel (uint32_t cid)
	Handles CTAPHID CANCEL requests and aborts active CTAP2 work.
static void	handle_cbor (uint32_t cid, const uint8_t *data, uint16_t len)
	Handles CTAPHID CBOR requests by dispatching to the CTAP2 command processor.
static void	process_complete_message (ctaphid_channel_t *ch)
	Dispatches a fully assembled channel message to its command handler.
bool	ctaphid_init (void)
	Initializes CTAPHID transport state and synchronization primitives.
void	ctaphid_get_cmd_counts (uint32_t cbor_count, uint32_t msg_count)
	Returns cumulative counters for CTAPHID CBOR and MSG commands.
void	ctaphid_reset_cmd_counts (void)
	Resets CTAPHID command counters.
bool	ctaphid_process_packet (const uint8_t *packet)
	Processes one incoming 64-byte CTAPHID packet.
bool	ctaphid_has_response (void)
	Indicates whether any channel has a response queued for host retrieval.
static ctaphid_channel_t *	pick_next_response_channel (void)
	Selects the next channel with a pending response in a round-robin fashion.
bool	ctaphid_get_response_packet (uint8_t *packet)
	Retrieves the next response HID packet from a per-channel response queue.
void	ctaphid_send_keepalive (uint32_t cid, uint8_t status)
	Sends a CTAPHID KEEPALIVE packet immediately over USB.
void	ctaphid_send_error (uint32_t cid, uint8_t error)
	Queues a CTAPHID ERROR response for the given channel.
void	ctaphid_check_timeout (void)
	Expires active channels whose message assembly timeout elapsed.
uint32_t	ctaphid_get_current_cid (void)
	Returns the channel identifier of the currently processed request.
bool	ctaphid_is_busy (void)
	Reports whether any CTAPHID channel currently has an active transaction.
bool	fido2_usb_write (const uint8_t *buffer)
	Sends one CTAPHID packet over USB HID.

Variables
static const char *	TAG = "CTAPHID"
static uint8_t	s_msg_buffers [8][CTAPHID_MAX_MSG_SIZE]
	Message and response buffers located in PSRAM to save internal RAM.
static uint8_t	s_response_buffers [8][CTAPHID_MAX_MSG_SIZE]
struct {
bool initialized
uint32_t next_cid
ctaphid_channel_t channels [8]
uint8_t init_buffer [64]
SemaphoreHandle_t mutex
uint32_t current_cid
uint8_t response_rr_index
uint32_t rate_window_start
uint8_t rate_cmd_count
uint32_t cbor_cmd_count
uint32_t msg_cmd_count
}	g_ctaphid = {}

Detailed Description

CTAPHID transport layer for USB HID framed CTAP2/U2F traffic.

Definition in file ctaphid.cpp.

Macro Definition Documentation

◆ CTAPHID_DEBUG_PACKETS

#define CTAPHID_DEBUG_PACKETS DEBUG_MODE

Enable verbose packet-level debug logging when feature flags allow it.

Definition at line 30 of file ctaphid.cpp.

Referenced by ctaphid_process_packet(), handle_cancel(), handle_cbor(), handle_init(), handle_ping(), handle_wink(), and process_complete_message().

◆ CTAPHID_MAX_CHANNELS

#define CTAPHID_MAX_CHANNELS 8

Definition at line 33 of file ctaphid.cpp.

Referenced by alloc_channel(), ctaphid_check_timeout(), ctaphid_has_response(), ctaphid_is_busy(), ctaphid_send_error(), find_channel(), and pick_next_response_channel().

◆ CTAPHID_MSG_TIMEOUT_MS

#define CTAPHID_MSG_TIMEOUT_MS 500

Definition at line 32 of file ctaphid.cpp.

Referenced by ctaphid_check_timeout().

◆ CTAPHID_RATE_LIMIT_MAX_CMDS

#define CTAPHID_RATE_LIMIT_MAX_CMDS 200

Definition at line 40 of file ctaphid.cpp.

Referenced by ctaphid_process_packet().

◆ CTAPHID_RATE_LIMIT_WINDOW_MS

#define CTAPHID_RATE_LIMIT_WINDOW_MS 1000

Runtime state and channel bookkeeping for CTAPHID transport.

Per-window command rate limiting configuration.

Definition at line 39 of file ctaphid.cpp.

Referenced by ctaphid_process_packet().

◆ CTAPHID_RESPONSE_QUEUE_SIZE

#define CTAPHID_RESPONSE_QUEUE_SIZE 8

Definition at line 34 of file ctaphid.cpp.

Function Documentation

◆ alloc_channel()

ctaphid_channel_t * alloc_channel ( uint32_t cid )

static

Definition at line 101 of file ctaphid.cpp.

References CTAPHID_MAX_CHANNELS, find_channel(), g_ctaphid, init_channel_slot(), LOG_W, and TAG.

Referenced by ctaphid_send_error(), and handle_init().

◆ allocate_cid()

uint32_t allocate_cid ( void )

static

Allocates the next non-broadcast CTAPHID channel identifier.

Returns: Newly allocated channel identifier.

Definition at line 139 of file ctaphid.cpp.

References CTAPHID_BROADCAST_CID, and g_ctaphid.

Referenced by handle_init().

◆ build_cont_packet()

void build_cont_packet	(	uint8_t *	packet,
		uint32_t	cid,
		uint8_t	seq,
		const uint8_t *	data,
		uint16_t	data_len )

static

Builds a CTAPHID continuation packet.

Parameters

packet	Destination buffer for the 64-byte HID packet.
cid	CTAPHID channel identifier.
seq	Continuation sequence number.
data	Optional payload pointer.
data_len	Number of payload bytes available in data.

Definition at line 188 of file ctaphid.cpp.

References CTAPHID_CONT_DATA, and CTAPHID_PACKET_SIZE.

Referenced by ctaphid_get_response_packet().

◆ build_init_packet()

void build_init_packet	(	uint8_t *	packet,
		uint32_t	cid,
		uint8_t	cmd,
		uint16_t	bcnt,
		const uint8_t *	data,
		uint16_t	data_len )

static

Builds a CTAPHID initialization packet.

Parameters

packet	Destination buffer for the 64-byte HID packet.
cid	CTAPHID channel identifier.
Plugin command channel	CTAPHID command byte without the init bit.
bcnt	Total message byte count.
data	Optional payload pointer.
data_len	Number of payload bytes available in data.

Definition at line 160 of file ctaphid.cpp.

References CTAPHID_INIT_DATA, and CTAPHID_PACKET_SIZE.

Referenced by ctaphid_get_response_packet(), and ctaphid_send_keepalive().

◆ ctaphid_check_timeout()

void ctaphid_check_timeout ( void )

Expires active channels whose message assembly timeout elapsed.

Definition at line 730 of file ctaphid.cpp.

References CTAPHID_ERR_MSG_TIMEOUT, CTAPHID_MAX_CHANNELS, CTAPHID_MSG_TIMEOUT_MS, ctaphid_send_error(), g_ctaphid, LOG_W, and TAG.

Referenced by fido2_task().

◆ ctaphid_get_cmd_counts()

void ctaphid_get_cmd_counts	(	uint32_t *	cbor_count,
		uint32_t *	msg_count )

Returns cumulative counters for CTAPHID CBOR and MSG commands.

Parameters

cbor_count	Optional destination for CBOR command count.
msg_count	Optional destination for MSG/U2F command count.

Definition at line 456 of file ctaphid.cpp.

References g_ctaphid.

◆ ctaphid_get_current_cid()

uint32_t ctaphid_get_current_cid ( void )

Returns the channel identifier of the currently processed request.

Returns: Active request channel identifier.

Definition at line 753 of file ctaphid.cpp.

References g_ctaphid.

Referenced by ctap2_send_keepalive(), cdc::mod_fido2::fido2_ui_user_presence_callback(), and wait_for_user_presence().

◆ ctaphid_get_response_packet()

bool ctaphid_get_response_packet ( uint8_t * packet )

Retrieves the next response HID packet from a per-channel response queue.

Parameters

packet Destination buffer for the response packet.

Returns: true when a packet was written, otherwise false.

Definition at line 634 of file ctaphid.cpp.

References build_cont_packet(), build_init_packet(), cancelled, ctap2_is_cancelled(), CTAPHID_CONT_DATA, CTAPHID_INIT_DATA, g_ctaphid, LOG_W, pick_next_response_channel(), and TAG.

Referenced by fido2_task().

◆ ctaphid_has_response()

bool ctaphid_has_response ( void )

Indicates whether any channel has a response queued for host retrieval.

Returns: true when at least one channel has a pending response, otherwise false.

Definition at line 607 of file ctaphid.cpp.

References CTAPHID_MAX_CHANNELS, and g_ctaphid.

Referenced by fido2_task().

◆ ctaphid_init()

bool ctaphid_init ( void )

Initializes CTAPHID transport state and synchronization primitives.

Returns: true on success, otherwise false.

Definition at line 434 of file ctaphid.cpp.

References g_ctaphid, LOG_E, LOG_I, and TAG.

Referenced by fido2_init().

◆ ctaphid_is_busy()

bool ctaphid_is_busy ( void )

Reports whether any CTAPHID channel currently has an active transaction.

Returns: true when at least one channel is active, otherwise false.

Definition at line 761 of file ctaphid.cpp.

References CTAPHID_MAX_CHANNELS, and g_ctaphid.

◆ ctaphid_process_packet()

bool ctaphid_process_packet ( const uint8_t * packet )

Processes one incoming 64-byte CTAPHID packet.

Parameters

packet HID packet buffer.

Returns: true when the packet is consumed, false on invalid preconditions.

Definition at line 474 of file ctaphid.cpp.

References CTAPHID_CONT_DATA, CTAPHID_DEBUG_PACKETS, CTAPHID_ERR_CHANNEL_BUSY, CTAPHID_ERR_INVALID_CHANNEL, CTAPHID_ERR_INVALID_LEN, CTAPHID_ERR_INVALID_SEQ, CTAPHID_INIT, CTAPHID_INIT_DATA, CTAPHID_MAX_MSG_SIZE, CTAPHID_RATE_LIMIT_MAX_CMDS, CTAPHID_RATE_LIMIT_WINDOW_MS, ctaphid_send_error(), find_channel(), g_ctaphid, LOG_D, LOG_W, process_complete_message(), and TAG.

Referenced by fido2_task().

◆ ctaphid_reset_cmd_counts()

void ctaphid_reset_cmd_counts ( void )

Resets CTAPHID command counters.

Definition at line 464 of file ctaphid.cpp.

References g_ctaphid.

◆ ctaphid_send_error()

void ctaphid_send_error	(	uint32_t	cid,
		uint8_t	error )

Queues a CTAPHID ERROR response for the given channel.

Parameters

cid	Channel identifier.
error	CTAPHID error code.

Definition at line 703 of file ctaphid.cpp.

References alloc_channel(), CTAPHID_BROADCAST_CID, CTAPHID_ERROR, CTAPHID_MAX_CHANNELS, find_channel(), g_ctaphid, LOG_W, prepare_response_on(), and TAG.

Referenced by ctaphid_check_timeout(), ctaphid_process_packet(), handle_cbor(), handle_init(), and process_complete_message().

◆ ctaphid_send_keepalive()

void ctaphid_send_keepalive	(	uint32_t	cid,
		uint8_t	status )

Sends a CTAPHID KEEPALIVE packet immediately over USB.

Parameters

cid	Channel identifier.
status	CTAPHID keepalive status byte.

Definition at line 689 of file ctaphid.cpp.

References build_init_packet(), CTAPHID_KEEPALIVE, CTAPHID_PACKET_SIZE, and fido2_usb_write().

Referenced by ctap2_send_keepalive(), cdc::mod_fido2::fido2_ui_user_presence_callback(), and wait_for_user_presence().

◆ fido2_usb_write()

bool cdc::mod_fido2::fido2_usb_write ( const uint8_t * buffer )

Sends one CTAPHID packet over USB HID.

Parameters

buffer Packet data buffer.

Returns: true if report submission succeeded.

Definition at line 293 of file Fido2Module.cpp.

Referenced by ctaphid_send_keepalive().

◆ find_channel()

ctaphid_channel_t * find_channel ( uint32_t cid )

static

Returns the channel record for a given channel identifier.

Parameters

cid	CTAPHID channel identifier.

Returns: Pointer to the channel entry, or NULL when not found.

Definition at line 67 of file ctaphid.cpp.

References CTAPHID_MAX_CHANNELS, and g_ctaphid.

Referenced by alloc_channel(), ctaphid_process_packet(), ctaphid_send_error(), handle_cbor(), and prepare_response().

◆ handle_cancel()

void handle_cancel ( uint32_t cid )

static

Handles CTAPHID CANCEL requests and aborts active CTAP2 work.

Parameters

cid	Request channel identifier.

Definition at line 330 of file ctaphid.cpp.

References ctap2_cancel(), CTAPHID_DEBUG_PACKETS, cdc::mod_fido2::fido2_ui_abort_prompt(), LOG_D, and TAG.

Referenced by process_complete_message().

◆ handle_cbor()

void handle_cbor	(	uint32_t	cid,
		const uint8_t *	data,
		uint16_t	len )

static

Handles CTAPHID CBOR requests by dispatching to the CTAP2 command processor.

Parameters

cid	Request channel identifier.
data	CBOR command payload.
len	Length of data in bytes.

Definition at line 342 of file ctaphid.cpp.

References ctap2_process_command(), CTAPHID_CBOR, CTAPHID_DEBUG_PACKETS, CTAPHID_ERR_INVALID_CHANNEL, CTAPHID_ERR_INVALID_LEN, ctaphid_send_error(), find_channel(), g_ctaphid, LOG_D, LOG_I, and TAG.

Referenced by process_complete_message().

◆ handle_init()

void handle_init	(	uint32_t	cid,
		const uint8_t *	data,
		uint16_t	len )

static

Handles CTAPHID INIT and returns negotiated channel/capability data.

Parameters

cid	Source channel identifier from the request.
data	INIT request payload.
len	Length of data in bytes.

Definition at line 267 of file ctaphid.cpp.

References alloc_channel(), allocate_cid(), ctap2_clear_cancel(), CTAPHID_BROADCAST_CID, CTAPHID_CAP_CBOR, CTAPHID_CAP_WINK, CTAPHID_DEBUG_PACKETS, CTAPHID_ERR_INVALID_LEN, CTAPHID_ERR_OTHER, CTAPHID_INIT, ctaphid_send_error(), LOG_D, prepare_response_on(), and TAG.

Referenced by process_complete_message().

◆ handle_ping()

void handle_ping	(	uint32_t	cid,
		const uint8_t *	data,
		uint16_t	len )

static

Handles CTAPHID PING by echoing the request payload.

Parameters

cid	Request channel identifier.
data	PING payload bytes.
len	Length of data in bytes.

Definition at line 310 of file ctaphid.cpp.

References CTAPHID_DEBUG_PACKETS, CTAPHID_PING, LOG_D, prepare_response(), and TAG.

Referenced by process_complete_message().

◆ handle_wink()

void handle_wink ( uint32_t cid )

static

Handles CTAPHID WINK requests.

Parameters

cid	Request channel identifier.

Definition at line 320 of file ctaphid.cpp.

References CTAPHID_DEBUG_PACKETS, CTAPHID_WINK, LOG_D, prepare_response(), TAG, and cdc::hal::winkBacklight().

Referenced by process_complete_message().

◆ init_channel_slot()

void init_channel_slot	(	int	index,
		uint32_t	cid )

static

Allocates or reuses a channel slot for the provided channel identifier.

Parameters

cid	CTAPHID channel identifier to allocate.

Returns: Pointer to the allocated channel entry, or NULL when no slot is available.

Wires per-channel scratch and response buffers for a freshly assigned slot.

Parameters

index	Channel-array index.
cid	CTAPHID channel identifier to assign.

Definition at line 87 of file ctaphid.cpp.

References CTAPHID_MAX_MSG_SIZE, g_ctaphid, s_msg_buffers, and s_response_buffers.

Referenced by alloc_channel().

◆ pick_next_response_channel()

ctaphid_channel_t * pick_next_response_channel ( void )

static

Selects the next channel with a pending response in a round-robin fashion.

Returns: Channel pointer, or NULL when no responses are pending.

Definition at line 618 of file ctaphid.cpp.

References CTAPHID_MAX_CHANNELS, and g_ctaphid.

Referenced by ctaphid_get_response_packet().

◆ prepare_response()

void prepare_response	(	uint32_t	cid,
		uint8_t	cmd,
		const uint8_t *	data,
		uint16_t	len )

static

Stores a command response so it can be packetized and read out later.

Parameters

cid	Channel identifier for the response.
Plugin command channel	CTAPHID response command.
data	Optional response payload pointer.
len	Number of payload bytes.

Definition at line 213 of file ctaphid.cpp.

References CTAPHID_CBOR, find_channel(), LOG_E, LOG_I, LOG_W, and TAG.

Referenced by handle_ping(), handle_wink(), and process_complete_message().

◆ prepare_response_on()

void prepare_response_on	(	ctaphid_channel_t *	ch,
		uint32_t	send_cid,
		uint8_t	cmd,
		const uint8_t *	data,
		uint16_t	len )

static

Stores a response on the given channel slot but addressed to a different CID.

Parameters

ch	Channel slot that holds the response buffer.
send_cid	CTAPHID identifier that should appear on outgoing packets.
Plugin command channel	CTAPHID response command.
data	Optional response payload pointer.
len	Number of payload bytes.

Definition at line 244 of file ctaphid.cpp.

References LOG_E, and TAG.

Referenced by ctaphid_send_error(), and handle_init().

◆ process_complete_message()

void process_complete_message ( ctaphid_channel_t * ch )

static

Dispatches a fully assembled channel message to its command handler.

Parameters

ch	Channel state containing command and assembled payload.

Definition at line 378 of file ctaphid.cpp.

References CTAPHID_CANCEL, CTAPHID_CBOR, CTAPHID_DEBUG_PACKETS, CTAPHID_ERR_INVALID_CMD, CTAPHID_INIT, CTAPHID_MSG, CTAPHID_PING, ctaphid_send_error(), CTAPHID_VENDOR_FIRST, CTAPHID_VENDOR_LAST, CTAPHID_WINK, g_ctaphid, handle_cancel(), handle_cbor(), handle_init(), handle_ping(), handle_wink(), LOG_D, prepare_response(), TAG, and u2f_process_apdu().

Referenced by ctaphid_process_packet().

Variable Documentation

◆ cbor_cmd_count

uint32_t cbor_cmd_count

Definition at line 58 of file ctaphid.cpp.

◆ channels

ctaphid_channel_t channels[8]

Definition at line 49 of file ctaphid.cpp.

◆ current_cid

uint32_t current_cid

Definition at line 52 of file ctaphid.cpp.

◆ [struct]

struct { ... } g_ctaphid

Referenced by alloc_channel(), allocate_cid(), ctaphid_check_timeout(), ctaphid_get_cmd_counts(), ctaphid_get_current_cid(), ctaphid_get_response_packet(), ctaphid_has_response(), ctaphid_init(), ctaphid_is_busy(), ctaphid_process_packet(), ctaphid_reset_cmd_counts(), ctaphid_send_error(), find_channel(), handle_cbor(), init_channel_slot(), pick_next_response_channel(), and process_complete_message().

◆ init_buffer

uint8_t init_buffer[64]

Definition at line 50 of file ctaphid.cpp.

◆ initialized

bool initialized

Definition at line 47 of file ctaphid.cpp.

◆ msg_cmd_count

uint32_t msg_cmd_count

Definition at line 59 of file ctaphid.cpp.

◆ mutex

SemaphoreHandle_t mutex

Definition at line 51 of file ctaphid.cpp.

Referenced by host_pixel_strip_clear(), host_pixel_strip_deinit(), host_pixel_strip_fill(), host_pixel_strip_init(), host_pixel_strip_length(), host_pixel_strip_ready(), host_pixel_strip_refresh(), host_pixel_strip_set(), and cdc::ui::ListView::setEditMutex().

◆ next_cid

uint32_t next_cid

Definition at line 48 of file ctaphid.cpp.

◆ rate_cmd_count

uint8_t rate_cmd_count

Definition at line 56 of file ctaphid.cpp.

◆ rate_window_start

uint32_t rate_window_start

Definition at line 55 of file ctaphid.cpp.

◆ response_rr_index

uint8_t response_rr_index

Definition at line 53 of file ctaphid.cpp.

◆ s_msg_buffers

uint8_t s_msg_buffers[8][CTAPHID_MAX_MSG_SIZE]

static

Message and response buffers located in PSRAM to save internal RAM.

Definition at line 43 of file ctaphid.cpp.

Referenced by init_channel_slot().

◆ s_response_buffers

uint8_t s_response_buffers[8][CTAPHID_MAX_MSG_SIZE]

static

Definition at line 44 of file ctaphid.cpp.

Referenced by init_channel_slot().

◆ TAG

const char* TAG = "CTAPHID"

static

Definition at line 25 of file ctaphid.cpp.

Namespaces

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ CTAPHID_DEBUG_PACKETS

◆ CTAPHID_MAX_CHANNELS

◆ CTAPHID_MSG_TIMEOUT_MS

◆ CTAPHID_RATE_LIMIT_MAX_CMDS

◆ CTAPHID_RATE_LIMIT_WINDOW_MS

◆ CTAPHID_RESPONSE_QUEUE_SIZE

Function Documentation

◆ alloc_channel()

◆ allocate_cid()

◆ build_cont_packet()

◆ build_init_packet()

◆ ctaphid_check_timeout()

◆ ctaphid_get_cmd_counts()

◆ ctaphid_get_current_cid()

◆ ctaphid_get_response_packet()

◆ ctaphid_has_response()

◆ ctaphid_init()

◆ ctaphid_is_busy()

◆ ctaphid_process_packet()

◆ ctaphid_reset_cmd_counts()

◆ ctaphid_send_error()

◆ ctaphid_send_keepalive()

◆ fido2_usb_write()

◆ find_channel()

◆ handle_cancel()

◆ handle_cbor()

◆ handle_init()

◆ handle_ping()

◆ handle_wink()

◆ init_channel_slot()

◆ pick_next_response_channel()

◆ prepare_response()

◆ prepare_response_on()

◆ process_complete_message()

Variable Documentation

◆ cbor_cmd_count

◆ channels

◆ current_cid

◆ [struct]

◆ init_buffer

◆ initialized

◆ msg_cmd_count

◆ mutex

◆ next_cid

◆ rate_cmd_count

◆ rate_window_start

◆ response_rr_index

◆ s_msg_buffers

◆ s_response_buffers

◆ TAG