Struct HyperliquidWebSocketClient 

pub struct HyperliquidWebSocketClient { /* private fields */ }

Hyperliquid WebSocket client following the BitMEX pattern.

Orchestrates WebSocket connection and subscriptions using a command-based architecture, where the inner FeedHandler owns the WebSocketClient and handles all I/O.

Implementations

impl HyperliquidWebSocketClient

pub fn new( url: Option<String>, testnet: bool, account_id: Option<AccountId>, ) -> Self

Creates a new Hyperliquid WebSocket client without connecting.

If url is None, the appropriate URL will be determined based on the testnet flag:

• testnet=false: wss://api.hyperliquid.xyz/ws
• testnet=true: wss://api.hyperliquid-testnet.xyz/ws

The connection will be established when connect() is called.

pub async fn connect(&mut self) -> Result<()>

Establishes WebSocket connection and spawns the message handler.

pub async fn disconnect(&mut self) -> Result<()>

Disconnects the WebSocket connection.

pub fn is_active(&self) -> bool

Returns true if the WebSocket is actively connected.

pub fn url(&self) -> &str

Returns the URL of this WebSocket client.

pub fn cache_instruments(&mut self, instruments: Vec<InstrumentAny>)

Caches multiple instruments.

Clears the existing cache first, then adds all provided instruments. Instruments are keyed by their raw_symbol which is unique per instrument:

• Perps use base currency (e.g., “BTC”)
• Spot uses @{pair_index} format (e.g., “@107”) or slash format for PURR

pub fn cache_instrument(&self, instrument: InstrumentAny)

Caches a single instrument.

Any existing instrument with the same raw_symbol will be replaced.

pub fn cache_spot_fill_coins(&self, mapping: AHashMap<Ustr, Ustr>)

Caches spot fill coin mappings for instrument lookup.

Hyperliquid WebSocket fills for spot use @{pair_index} format (e.g., @107), while instruments are identified by full symbols (e.g., HYPE-USDC-SPOT). This mapping allows the handler to look up instruments from spot fills.

pub fn cache_cloid_mapping(&self, cloid: Ustr, client_order_id: ClientOrderId)

Caches a cloid (hex hash) to client_order_id mapping for order/fill resolution.

The cloid is a keccak256 hash of the client_order_id that Hyperliquid uses internally. This mapping allows WebSocket order status and fill reports to be resolved back to the original client_order_id.

This writes directly to a shared cache that the handler reads from, avoiding any race conditions between caching and WebSocket message processing.

pub fn remove_cloid_mapping(&self, cloid: &Ustr)

Removes a cloid mapping from the cache.

Should be called when an order reaches a terminal state (filled, canceled, expired) to prevent unbounded memory growth in long-running sessions.

pub fn clear_cloid_cache(&self)

Clears all cloid mappings from the cache.

Useful for cleanup during reconnection or shutdown.

pub fn cloid_cache_len(&self) -> usize

Returns the number of cloid mappings in the cache.

pub fn get_cloid_mapping(&self, cloid: &Ustr) -> Option<ClientOrderId>

Looks up a client_order_id by its cloid hash.

Returns Some(ClientOrderId) if the mapping exists, None otherwise.

pub fn get_instrument(&self, id: &InstrumentId) -> Option<InstrumentAny>

Gets an instrument from the cache by ID.

Searches the cache for a matching instrument ID.

pub fn get_instrument_by_symbol(&self, symbol: &Ustr) -> Option<InstrumentAny>

Gets an instrument from the cache by raw_symbol (coin).

pub fn subscription_count(&self) -> usize

Returns the count of confirmed subscriptions.

pub fn get_bar_type(&self, coin: &str, interval: &str) -> Option<BarType>

Gets a bar type from the cache by coin and interval.

This looks up the subscription key created when subscribing to bars.

pub async fn subscribe_book(&self, instrument_id: InstrumentId) -> Result<()>

Subscribe to L2 order book for an instrument.

pub async fn subscribe_quotes(&self, instrument_id: InstrumentId) -> Result<()>

Subscribe to best bid/offer (BBO) quotes for an instrument.

pub async fn subscribe_trades(&self, instrument_id: InstrumentId) -> Result<()>

Subscribe to trades for an instrument.

pub async fn subscribe_mark_prices( &self, instrument_id: InstrumentId, ) -> Result<()>

Subscribe to mark price updates for an instrument.

pub async fn subscribe_index_prices( &self, instrument_id: InstrumentId, ) -> Result<()>

Subscribe to index/oracle price updates for an instrument.

pub async fn subscribe_bars(&self, bar_type: BarType) -> Result<()>

Subscribe to candle/bar data for a specific coin and interval.

pub async fn subscribe_funding_rates( &self, instrument_id: InstrumentId, ) -> Result<()>

Subscribe to funding rate updates for an instrument.

pub async fn subscribe_order_updates(&self, user: &str) -> Result<()>

Subscribe to order updates for a specific user address.

pub async fn subscribe_user_events(&self, user: &str) -> Result<()>

Subscribe to user events (fills, funding, liquidations) for a specific user address.

pub async fn subscribe_user_fills(&self, user: &str) -> Result<()>

Subscribe to user fills for a specific user address.

Note: This channel is redundant with userEvents which already includes fills. Prefer using subscribe_user_events or subscribe_all_user_channels instead.

pub async fn subscribe_all_user_channels(&self, user: &str) -> Result<()>

Subscribe to all user channels (order updates + user events) for convenience.

Note: userEvents already includes fills, so we don’t subscribe to userFills separately to avoid duplicate fill messages.

pub async fn unsubscribe_book(&self, instrument_id: InstrumentId) -> Result<()>

Unsubscribe from L2 order book for an instrument.

pub async fn unsubscribe_quotes( &self, instrument_id: InstrumentId, ) -> Result<()>

Unsubscribe from quote ticks for an instrument.

pub async fn unsubscribe_trades( &self, instrument_id: InstrumentId, ) -> Result<()>

Unsubscribe from trades for an instrument.

pub async fn unsubscribe_mark_prices( &self, instrument_id: InstrumentId, ) -> Result<()>

Unsubscribe from mark price updates for an instrument.

pub async fn unsubscribe_index_prices( &self, instrument_id: InstrumentId, ) -> Result<()>

Unsubscribe from index/oracle price updates for an instrument.

pub async fn unsubscribe_bars(&self, bar_type: BarType) -> Result<()>

Unsubscribe from candle/bar data.

pub async fn unsubscribe_funding_rates( &self, instrument_id: InstrumentId, ) -> Result<()>

Unsubscribe from funding rate updates for an instrument.

pub async fn next_event(&mut self) -> Option<NautilusWsMessage>

Receives the next message from the WebSocket handler.

Returns None if the handler has disconnected or the receiver was already taken.

impl HyperliquidWebSocketClient

pub fn py_url(&self) -> String

Trait Implementations

impl Clone for HyperliquidWebSocketClient

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HyperliquidWebSocketClient

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'py> IntoPyObject<'py> for HyperliquidWebSocketClient

type Target = HyperliquidWebSocketClient

The Python output type

type Output = Bound<'py, <HyperliquidWebSocketClient as IntoPyObject<'py>>::Target>

The smart pointer type to use.

type Error = PyErr

The type returned in the event of a conversion error.

fn into_pyobject( self, py: Python<'py>, ) -> Result<<Self as IntoPyObject<'_>>::Output, <Self as IntoPyObject<'_>>::Error>

Performs the conversion.

impl PyClass for HyperliquidWebSocketClient

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for HyperliquidWebSocketClient

const IS_BASETYPE: bool = false

#[pyclass(subclass)]

const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]

const IS_MAPPING: bool = false

#[pyclass(mapping)]

const IS_SEQUENCE: bool = false

#[pyclass(sequence)]

const IS_IMMUTABLE_TYPE: bool = false

#[pyclass(immutable_type)]

const RAW_DOC: &'static CStr = /// Hyperliquid WebSocket client following the BitMEX pattern. /// /// Orchestrates WebSocket connection and subscriptions using a command-based architecture, /// where the inner FeedHandler owns the WebSocketClient and handles all I/O.

Docstring for the class provided on the struct or enum.

const DOC: &'static CStr

Fully rendered class doc, including the text_signature if a constructor is defined.

type BaseType = PyAny

Base class

type ThreadChecker = SendablePyClass<HyperliquidWebSocketClient>

This handles following two situations:

type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable

type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.

type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.

type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.

fn items_iter() -> PyClassItemsIter

fn lazy_type_object() -> &'static LazyTypeObject<Self>

fn dict_offset() -> Option<isize>

fn weaklist_offset() -> Option<isize>

impl PyClassNewTextSignature for HyperliquidWebSocketClient

const TEXT_SIGNATURE: &'static str = "(url=None, testnet=False, account_id=None)"

impl PyMethods<HyperliquidWebSocketClient> for PyClassImplCollector<HyperliquidWebSocketClient>

fn py_methods(self) -> &'static PyClassItems

impl PyTypeInfo for HyperliquidWebSocketClient

const NAME: &'static str = "HyperliquidWebSocketClient"

Class name.

const MODULE: Option<&'static str>

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn type_object(py: Python<'_>) -> Bound<'_, PyType>

Returns the safe abstraction over the type object.

fn is_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type.

impl DerefToPyAny for HyperliquidWebSocketClient

impl ExtractPyClassWithClone for HyperliquidWebSocketClient