Market Data Subscriptions

The tables and examples below use the snake_case field names of Rust callback values. The JSON illustrates fields and values; it does not imply that the prost structs implement serde::Serialize. Ranking indicator values such as changeRate and bigOrder remain server-defined strings.

Subscribe Stock Quotes

Description

Create a market data subscription for real-time stock quotes. The SDK delivers both basic quotes and best bid/offer data as QuoteData.

Parameters

Parameter	Type	Description
symbols	&str	Stock symbols, comma-separated, e.g. `"AAPL,TSLA,00700"`

Example

// Subscribe to stock quotes
push.subscribe(&SubjectType::Quote, Some("AAPL,TSLA,00700"), None, None);

Cancel Subscription

Call the generic unsubscribe method with the same symbols. See Utility Methods for parameter details.

push.unsubscribe(&SubjectType::Quote, Some("AAPL,TSLA,00700"), None, None);

Callbacks

on_quote(QuoteData) — Stock basic quotes and best bid/offer; inspect type for BASIC / BBO

Callback Data Fields

QuoteData (basic quote):

Field	Type	Description
symbol	string	Stock symbol
type	string	Data type: `BASIC`
timestamp	string	Data timestamp (milliseconds)
server_timestamp	string	Server push timestamp
avg_price	double	Average price
latest_price	double	Latest price
latest_price_timestamp	string	Latest price timestamp
latest_time	string	Latest trade time (readable format)
pre_close	double	Previous close price
volume	string	Trading volume
amount	double	Trading amount
open	double	Open price
high	double	High price
low	double	Low price
market_status	string	Market status, e.g. `Trading`
hour_trading_tag	string	Pre/post market tag, e.g. `PreMarket` (US non-regular hours only)
mi	object	Minute K-line snapshot
mi.p	double	Minute close price
mi.a	double	Minute average price
mi.t	string	Minute timestamp
mi.v	string	Minute volume
mi.o	double	Minute open price
mi.h	double	Minute high price
mi.l	double	Minute low price

QuoteData (best bid/offer):

Field	Type	Description
symbol	string	Stock symbol
type	string	Data type: `BBO`
timestamp	string	Data timestamp (milliseconds)
ask_price	double	Best ask price
ask_size	string	Ask size
ask_timestamp	string	Ask quote timestamp
bid_price	double	Best bid price
bid_size	string	Bid size
bid_timestamp	string	Bid quote timestamp

Callback Data Examples

Basic quote (BASIC):

{
    "symbol": "AAPL",
    "type": "BASIC",
    "timestamp": "1684766012120",
    "server_timestamp": "1684766012129",
    "avg_price": 174.1721,
    "latest_price": 174.175,
    "latest_price_timestamp": "1684766011918",
    "latest_time": "05-22 10:33:31 EDT",
    "pre_close": 175.16,
    "volume": "12314802",
    "amount": 2144365591.41,
    "open": 173.98,
    "high": 174.71,
    "low": 173.45,
    "market_status": "Trading",
    "mi": {
        "p": 174.175,
        "a": 174.1721,
        "t": "1684765980000",
        "v": "57641",
        "o": 174.21,
        "h": 174.22,
        "l": 174.14
    }
}

Best bid/offer (BBO):

{
    "symbol": "AAPL",
    "type": "BBO",
    "timestamp": "1676992715509",
    "ask_price": 149.96,
    "ask_size": "200",
    "ask_timestamp": "1676992715367",
    "bid_price": 149.94,
    "bid_size": "700",
    "bid_timestamp": "1676992715367"
}

Subscribe Option Quotes

Description

Create a market data subscription for real-time option quotes (supports US and HK market options). Callback data includes basic quote and best bid/offer types.

Parameters

Parameter	Type	Description
symbols	&str	Option symbols, comma-separated. Supports two formats: `"AAPL 20230317 150.0 CALL"` or identifier format `"SPY 190508C00290000"`

Example

// Subscribe to option quotes
push.subscribe(&SubjectType::Option, Some("AAPL 20230317 150.0 CALL"), None, None);

Cancel Subscription

Call the generic unsubscribe method with the same symbol. See Utility Methods for parameter details.

push.unsubscribe(&SubjectType::Option, Some("AAPL 20230317 150.0 CALL"), None, None);

Callbacks

on_option(QuoteData) — Option basic quotes and best bid/offer; inspect type for BASIC / BBO

Callback Data Fields

QuoteData (option basic quote):

Field	Type	Description
symbol	string	Option symbol
type	string	Data type: `BASIC`
timestamp	string	Data timestamp (milliseconds)
latest_price	double	Latest price
latest_price_timestamp	string	Latest price timestamp
pre_close	double	Previous close price
volume	string	Trading volume
amount	double	Trading amount
open	double	Open price
high	double	High price
low	double	Low price
identifier	string	Standard option code (e.g. `AAPL 230317C00150000`)
open_int	string	Open interest

QuoteData (option best bid/offer):

Field	Type	Description
symbol	string	Option symbol
type	string	Data type: `BBO`
timestamp	string	Data timestamp (milliseconds)
ask_price	double	Best ask price
ask_size	string	Ask size
ask_timestamp	string	Ask quote timestamp
bid_price	double	Best bid price
bid_size	string	Bid size
bid_timestamp	string	Bid quote timestamp

Callback Data Examples

Option basic quote:

{
    "symbol": "AAPL 20230317 150.0 CALL",
    "type": "BASIC",
    "timestamp": "1676994444927",
    "latest_price": 4.83,
    "latest_price_timestamp": "1676994444927",
    "pre_close": 6.21,
    "volume": "3181",
    "amount": 939117.01,
    "open": 4.85,
    "high": 5.6,
    "low": 4.64,
    "identifier": "AAPL  230317C00150000",
    "open_int": "82677"
}

Option BBO:

{
    "symbol": "AAPL 20230317 150.0 CALL",
    "type": "BBO",
    "timestamp": "1676994393156",
    "ask_price": 4.85,
    "ask_size": "11",
    "ask_timestamp": "1676994393156",
    "bid_price": 4.8,
    "bid_size": "992",
    "bid_timestamp": "1676994390931"
}

Subscribe Future Quotes

Description

Create a market data subscription for real-time futures quotes. Callback data includes basic quote and best bid/offer types.

Parameters

Parameter	Type	Description
symbols	&str	Futures symbols, comma-separated, e.g. `"ESmain,ES2609"`

Example

// Subscribe to futures quotes
push.subscribe(&SubjectType::Future, Some("ESmain,ES2609"), None, None);

Cancel Subscription

Call the generic unsubscribe method with the same symbols. See Utility Methods for parameter details.

push.unsubscribe(&SubjectType::Future, Some("ESmain,ES2609"), None, None);

Callbacks

on_future(QuoteData) — Futures basic quotes and best bid/offer; inspect type for BASIC / BBO

Callback Data Fields

QuoteData (futures basic quote):

Field	Type	Description
symbol	string	Futures symbol
type	string	Data type: `BASIC`
timestamp	string	Data timestamp (milliseconds)
avg_price	double	Average price
latest_price	double	Latest price
latest_price_timestamp	string	Latest price timestamp
latest_time	string	Latest trade time
pre_close	double	Previous close price
volume	string	Trading volume
open	double	Open price
high	double	High price
low	double	Low price
market_status	string	Market status
trade_time	string	Trade timestamp
pre_settlement	double	Previous settlement price
min_tick	double	Minimum tick size
mi	object	Minute K-line snapshot (same fields as stock)

QuoteData (futures best bid/offer): Same fields as stock BBO data.

Callback Data Examples

Futures basic quote:

{
    "symbol": "ESmain",
    "type": "BASIC",
    "timestamp": "1684766824130",
    "avg_price": 4206.476,
    "latest_price": 4202.5,
    "latest_price_timestamp": "1684766824000",
    "latest_time": "05-22 09:47:04 -0500",
    "pre_close": 4204.75,
    "volume": "557570",
    "open": 4189,
    "high": 4221.75,
    "low": 4186.5,
    "market_status": "Trading",
    "trade_time": "1684766824000",
    "pre_settlement": 4204.75,
    "min_tick": 0.25,
    "mi": {
        "p": 4202.25,
        "a": 4206.476,
        "t": "1684766820000",
        "v": "96",
        "o": 4202.25,
        "h": 4202.5,
        "l": 4202.0
    }
}

Futures BBO:

{
    "symbol": "ESmain",
    "type": "BBO",
    "timestamp": "1684766824130",
    "ask_price": 4202.75,
    "ask_size": "70",
    "ask_timestamp": "1684766824129",
    "bid_price": 4202.5,
    "bid_size": "2",
    "bid_timestamp": "1684766824130"
}

Subscribe Crypto Quotes

Description

Create a market data subscription for real-time cryptocurrency quotes. Callback data includes basic quote and best bid/offer types.

Parameters

Parameter	Type	Description
symbols	&[&str]	Crypto symbol array, e.g. `&["BTC.USD", "ETH.USD"]`

Example

// Subscribe to crypto quotes
push.subscribe_cc(&["BTC.USD", "ETH.USD"])?;

Cancel Subscription

Call unsubscribe_cc for specific cryptocurrencies, or pass None to cancel all. See Utility Methods for details.

push.unsubscribe_cc(Some(&["BTC.USD", "ETH.USD"]))?;

Callbacks

on_quote(QuoteData) — Crypto basic quotes and best bid/offer; inspect type for BASIC / BBO

Callback Data Fields

QuoteData (crypto basic quote):

Field	Type	Description
symbol	string	Crypto symbol, e.g. `ETH.USD`
type	string	Data type: `BASIC`
timestamp	string	Data timestamp (milliseconds)
server_timestamp	string	Server push timestamp
latest_price	double	Latest price
latest_price_timestamp	string	Latest price timestamp
latest_time	string	Latest trade time
pre_close	double	Previous close price
volume_decimal	double	Trading volume (decimal precision)
amount	double	Trading amount
open	double	Open price
high	double	High price
low	double	Low price
market_status	string	Market status, e.g. `TRADING`

QuoteData (crypto best bid/offer):

Field	Type	Description
symbol	string	Crypto symbol
type	string	Data type: `BBO`
timestamp	string	Data timestamp (milliseconds)
ask_price	double	Best ask price
ask_timestamp	string	Ask quote timestamp
bid_price	double	Best bid price
bid_size	string	Bid size
bid_timestamp	string	Bid quote timestamp

Callback Data Examples

Crypto basic quote:

{
    "symbol": "ETH.USD",
    "type": "BASIC",
    "timestamp": "1770041127619",
    "server_timestamp": "1770041127816",
    "latest_price": 2322.97,
    "latest_price_timestamp": "1770041127619",
    "latest_time": "02-02 22:05:27 HKT",
    "pre_close": 2313.05,
    "volume_decimal": 27711.5,
    "amount": 62465538.27,
    "open": 2314.18,
    "high": 2374.87,
    "low": 2156.8,
    "market_status": "TRADING"
}

Crypto BBO:

{
    "symbol": "ETH.USD",
    "type": "BBO",
    "timestamp": "1770041127619",
    "ask_price": 2322.97,
    "ask_timestamp": "1770041127605",
    "bid_price": 2322.95,
    "bid_size": "1",
    "bid_timestamp": "1770041127605"
}

Subscribe to Market Depth

Description

Subscribe to market depth. Supports stocks (US/HK), options (US/HK), and futures. US market depth updates every 300ms, while HK market depth updates every 2s. Each update returns up to 40 levels of order book data (HK has 10 levels).

Parameters

Parameter	Type	Description
symbols	&str	Stock, option, or futures symbols, comma-separated, e.g. `"AAPL,ESmain"`

Example

// Subscribe to market depth
push.subscribe(&SubjectType::Depth, Some("AAPL,00700"), None, None);

Cancel Subscription

Call the generic unsubscribe method with the same symbols. See Utility Methods for parameter details.

push.unsubscribe(&SubjectType::Depth, Some("AAPL,00700"), None, None);

Callbacks

on_depth(QuoteDepthData) — Order book data

Callback Data Fields

QuoteDepthData:

Field	Type	Description
symbol	string	Symbol
timestamp	string	Order book timestamp
ask	object	Ask (sell) side data
ask.price	double[]	Price at each level
ask.volume	string[]	Volume at each level
ask.orderCount	int[]	Order count at each level (HK only)
bid	object	Bid (buy) side data
bid.price	double[]	Price at each level
bid.volume	string[]	Volume at each level
bid.orderCount	int[]	Order count at each level (HK only)

Callback Data Examples

US market depth:

{
    "symbol": "AAPL",
    "timestamp": "1676993368405",
    "ask": {
        "price": [149.69, 149.70, 149.71, 149.72, 149.73],
        "volume": ["100", "200", "185", "100", "100"]
    },
    "bid": {
        "price": [149.68, 149.67, 149.66, 149.65, 149.64],
        "volume": ["84", "100", "100", "200", "100"]
    }
}

HK market depth (with order count):

{
    "symbol": "00700",
    "timestamp": "1670465696884",
    "ask": {
        "price": [311.4, 311.6, 311.8, 312.0, 312.2],
        "volume": ["15600", "5700", "16600", "33800", "61100"],
        "orderCount": [16, 13, 19, 79, 39]
    },
    "bid": {
        "price": [311.2, 311.0, 310.8, 310.6, 310.4],
        "volume": ["2300", "8300", "18000", "8800", "7700"],
        "orderCount": [10, 15, 18, 9, 6]
    }
}

Subscribe Trade Ticks

Description

Subscribe to trade ticks for stocks and futures. Trade ticks are pushed every 200ms in snapshot mode, with the latest 50 records in each push. Supports US and HK stocks and futures.

Parameters

Parameter	Type	Description
symbols	&str	Stock or futures symbols, comma-separated, e.g. `"AAPL,00700,ESmain"`

Example

// Subscribe to trade ticks
push.subscribe(&SubjectType::Tick, Some("AAPL,00700"), None, None);

Cancel Subscription

Call the generic unsubscribe method with the same symbols. See Utility Methods for parameter details.

push.unsubscribe(&SubjectType::Tick, Some("AAPL,00700"), None, None);

Callbacks

on_tick(PushTradeTick) — Trade ticks decoded by the SDK

Callback Data Fields

PushTradeTick:

Field	Type	Description
symbol	string	Symbol
sec_type	string	Security type: `STK` / `FUT`
quote_level	string	Market data access level (e.g. `usQuoteBasic`, `hkStockQuoteLv2`)
timestamp	long	Data timestamp
ticks	Tick[]	Trade tick array

Tick:

Field	Type	Description
sn	long	Tick sequence number
volume	long	Trade volume
tick_type	string	`*` neutral, `+` active buy, `-` active sell (not available for futures)
price	double	Trade price
time	long	Trade timestamp
cond	string	Decoded trade condition; see Trade Tick Conditions
part_code	string	Exchange code (US stocks only)

Callback Data Examples

US stock trade ticks:

{
    "symbol": "AAPL",
    "sec_type": "STK",
    "quote_level": "usQuoteBasic",
    "timestamp": 1676993925700,
    "ticks": [
        {
            "sn": 116202,
            "volume": 50,
            "tick_type": "*",
            "price": 149.665,
            "time": 1676993924289,
            "cond": "US_REGULAR_SALE"
        },
        {
            "sn": 116203,
            "volume": 1,
            "tick_type": "*",
            "price": 149.68,
            "time": 1676993924459,
            "cond": "US_REGULAR_SALE"
        }
    ]
}

HK stock trade ticks:

{
    "symbol": "00700",
    "sec_type": "STK",
    "quote_level": "hkStockQuoteLv2",
    "timestamp": 1669345639970,
    "ticks": [
        {
            "sn": 35115,
            "volume": 300,
            "tick_type": "+",
            "price": 269.2,
            "time": 1669345639496,
            "cond": "HK_AUTOMATCH_NORMAL"
        },
        {
            "sn": 35116,
            "volume": 200,
            "tick_type": "+",
            "price": 269.2,
            "time": 1669345639610,
            "cond": "HK_AUTOMATCH_NORMAL"
        }
    ]
}

Futures trade ticks:

{
    "symbol": "HSImain",
    "sec_type": "FUT",
    "timestamp": 1669345640575,
    "ticks": [
        {
            "sn": 261560,
            "volume": 1,
            "price": 17465.0,
            "time": 1669345639000
        },
        {
            "sn": 261561,
            "volume": 1,
            "price": 17465.0,
            "time": 1669345639000
        }
    ]
}

Subscribe to Minute Bars

Description

Subscribe to minute-level K-line (candlestick) data for stocks. Supports US and HK market stocks.

Parameters

Parameter	Type	Description
symbols	&str	Stock symbols, comma-separated, e.g. `"AAPL,00700"`

Example

// Subscribe to minute K-line
push.subscribe(&SubjectType::Kline, Some("AAPL,00700"), None, None);

Cancel Subscription

Call the generic unsubscribe method with the same symbols. See Utility Methods for parameter details.

push.unsubscribe(&SubjectType::Kline, Some("AAPL,00700"), None, None);

Callbacks

on_kline(KlineData) — Minute K-line data

Callback Data Fields

KlineData:

Field	Type	Description
symbol	string	Stock symbol
time	string	Minute timestamp
open	float	Open price
high	float	High price
low	float	Low price
close	float	Close price
avg	float	Average price
volume	string	Trading volume
count	int	Trade count
amount	double	Trading amount
server_timestamp	string	Server push timestamp

Callback Data Example

{
    "symbol": "AAPL",
    "time": "1712584560000",
    "open": 168.9779,
    "high": 169.0015,
    "low": 168.9752,
    "close": 169.0,
    "avg": 168.778,
    "volume": "3664",
    "count": 114,
    "amount": 617820.6508,
    "server_timestamp": "1712584569746"
}

Subscribe Stock Rankings

Description

Subscribe to stock ranking data. No pushes during non-trading hours. The server runs the ranking push task every 30 seconds; ranking size is configurable and defaults to 10. Supports US and HK markets.

During regular trading hours, all indicators are available. US pre/post market only has changeRate and changeRate5Min.

Parameters

Parameter	Type	Description
market	&str	Market code, e.g. `"US"`, `"HK"`

Example

// Subscribe to US stock rankings
push.subscribe(&SubjectType::StockTop, None, None, Some("US"));

subscribe_market("HK") subscribes to HK whole-market quotes, not stock rankings; only HK is supported.

Cancel Subscription

Call the generic unsubscribe method with SubjectType::StockTop to cancel stock ranking data for a market. See Utility Methods for details.

push.unsubscribe(&SubjectType::StockTop, None, None, Some("US"));

Callbacks

on_stock_top(StockTopData) — Stock ranking data

Callback Data Fields

StockTopData:

Field	Type	Description
market	string	Market: `US` / `HK`
timestamp	string	Timestamp
top_data	TopData[]	Ranking data for each indicator

TopData:

Field	Type	Description
target_name	string	Indicator name: `changeRate` (daily change), `changeRate5Min` (5-min change), `turnoverRate` (turnover rate), `amount` (trading amount), `volume` (trading volume), `amplitude` (amplitude)
item	StockItem[]	Ranking list for this indicator

StockItem:

Field	Type	Description
symbol	string	Symbol
latest_price	double	Latest price
target_value	double	Indicator value

Callback Data Example

{
    "market": "US",
    "timestamp": "1687271010482",
    "top_data": [
        {
            "target_name": "changeRate",
            "item": [
                {"symbol": "ICAD", "latest_price": 1.63, "target_value": 0.393162},
                {"symbol": "DICE", "latest_price": 46.54, "target_value": 0.374889},
                {"symbol": "VCIG", "latest_price": 3.88, "target_value": 0.371025}
            ]
        },
        {
            "target_name": "amount",
            "item": [
                {"symbol": "TSLA", "latest_price": 263.21, "target_value": 10629393179.8},
                {"symbol": "SPY", "latest_price": 435.64, "target_value": 5839415251.67},
                {"symbol": "NVDA", "latest_price": 428.38, "target_value": 5123997584.1}
            ]
        },
        {
            "target_name": "volume",
            "item": [
                {"symbol": "TSLA", "latest_price": 263.21, "target_value": 40190416},
                {"symbol": "NKLA", "latest_price": 1.26, "target_value": 33326008},
                {"symbol": "SQQQ", "latest_price": 19.93, "target_value": 31339556}
            ]
        }
    ]
}

Subscribe Option Rankings

Description

Subscribe to option ranking data. No pushes during non-trading hours. The server runs the ranking push task every 30 seconds; ranking size is configurable and defaults to 10. Supports US market options.

Big orders are defined as single trades with volume > 1000, sorted by trade time descending. Other indicators show cumulative daily values sorted descending.

Parameters

Parameter	Type	Description
market	&str	Market code, e.g. `"US"`

Example

// Subscribe to US option rankings
push.subscribe(&SubjectType::OptionTop, None, None, Some("US"));

Cancel Subscription

Call the generic unsubscribe method with the same market. See Utility Methods for parameter details.

push.unsubscribe(&SubjectType::OptionTop, None, None, Some("US"));

Callbacks

on_option_top(OptionTopData) — Option ranking data

Callback Data Fields

OptionTopData:

Field	Type	Description
market	string	Market: `US`
timestamp	string	Timestamp
top_data	TopData[]	Ranking data for each indicator

TopData:

Field	Type	Description
target_name	string	Indicator name: `bigOrder` (large orders), `volume` (volume), `amount` (amount), `openInt` (open interest)
big_order	BigOrder[]	Large order data list (bigOrder indicator only)
item	OptionItem[]	Ranking list for this indicator

BigOrder:

Field	Type	Description
symbol	string	Stock/ETF symbol
expiry	string	Expiry date, format: `yyyyMMdd`
strike	string	Strike price
right	string	`CALL` / `PUT`
dir	string	Direction: `Buy` / `Sell` / `NONE`
volume	double	Trade volume
price	double	Trade price
amount	double	Trade amount
trade_time	long	Trade timestamp

OptionItem:

Field	Type	Description
symbol	string	Stock/ETF symbol
expiry	string	Expiry date, format: `yyyyMMdd`
strike	string	Strike price
right	string	`CALL` / `PUT`
total_amount	double	Total amount
total_volume	double	Total volume
total_open_int	double	Total open interest
volume_to_open_int	double	Volume to open interest ratio
latest_price	double	Latest price
update_time	string	Data update timestamp

Callback Data Example

{
    "market": "US",
    "timestamp": "1687277160445",
    "top_data": [
        {
            "target_name": "volume",
            "item": [
                {
                    "symbol": "SPY",
                    "expiry": "20230620",
                    "strike": "435.0",
                    "right": "PUT",
                    "total_amount": 5394115,
                    "total_volume": 212478,
                    "total_open_int": 16377,
                    "volume_to_open_int": 0.012467,
                    "latest_price": 0.25,
                    "update_time": "1687277254390"
                },
                {
                    "symbol": "SPY",
                    "expiry": "20230620",
                    "strike": "436.0",
                    "right": "PUT",
                    "total_amount": 7754077,
                    "total_volume": 194423,
                    "total_open_int": 13403,
                    "volume_to_open_int": 0.011408,
                    "latest_price": 0.58,
                    "update_time": "1687277213603"
                }
            ]
        },
        {
            "target_name": "bigOrder",
            "big_order": [
                {
                    "symbol": "AMC",
                    "expiry": "20230818",
                    "strike": "10.0",
                    "right": "PUT",
                    "dir": "Buy",
                    "volume": 1000,
                    "price": 6.94,
                    "amount": 694000,
                    "trade_time": 1687276860753
                },
                {
                    "symbol": "AMD",
                    "expiry": "20230818",
                    "strike": "140.0",
                    "right": "CALL",
                    "dir": "Buy",
                    "volume": 1700,
                    "price": 3.25,
                    "amount": 552500,
                    "trade_time": 1687276467421
                }
            ]
        }
    ]
}

Get Subscribed Symbols

Description

Query locally subscribed symbols. Returns a mapping from subject type to symbol list. List order is not guaranteed to be stable.

Example

// Get subscribed symbols
let subscriptions = push.get_subscriptions();
// Returns HashMap<SubjectType, Vec<String>>

Return Value

HashMap<SubjectType, Vec<String>> — Map from subject to locally recorded symbol list.

Utility Methods

`subscribe`

Generic subscription method. Builds and queues a subscription frame by subject type.

pub fn subscribe(
    &self,
    subject: &SubjectType,
    symbols: Option<&str>,
    account: Option<&str>,
    market: Option<&str>,
) -> bool

Parameter	Type	Description
subject	&SubjectType	Subject type (Quote, Option, Future, Depth, Tick, Kline, StockTop, OptionTop)
symbols	Option<&str>	Symbols, comma-separated
account	Option<&str>	Account (for trade subscriptions)
market	Option<&str>	Market (for ranking subscriptions)

Returns bool: only indicates whether the protocol frame was queued locally, not server acceptance.

`unsubscribe`

Generic unsubscription method. Same parameter semantics as subscribe.

pub fn unsubscribe(
    &self,
    subject: &SubjectType,
    symbols: Option<&str>,
    account: Option<&str>,
    market: Option<&str>,
) -> bool

`subscribe_market`

Subscribes to quote updates for the whole Hong Kong market; only HK is supported. The server delivers ongoing per-symbol QuoteData through the ordinary on_quote callback. This is neither a market-status subscription nor a one-time market snapshot or stock-ranking subscription.

pub fn subscribe_market(&self, market: &str) -> Result<(), TigerError>

`unsubscribe_market`

Unsubscribes from HK whole-market quote updates; only HK is supported.

pub fn unsubscribe_market(&self, market: &str) -> Result<(), TigerError>

`subscribe_cc`

Subscribe to cryptocurrency quotes.

pub fn subscribe_cc(&self, symbols: &[&str]) -> Result<(), TigerError>

`unsubscribe_cc`

Unsubscribe from cryptocurrency quotes. symbols=None unsubscribes all crypto.

pub fn unsubscribe_cc(&self, symbols: Option<&[&str]>) -> Result<(), TigerError>

`get_subscriptions`

Returns a snapshot of local subscription state.

pub fn get_subscriptions(&self) -> HashMap<SubjectType, Vec<String>>