feat: 更新 Lighter 适配器的账户快照逻辑，支持市场符号和市场 ID 过滤功能

feat: 更新订单协调器和 GRVT 适配器，添加触发类型支持，优化趋势引擎的损益计算逻辑
feat: 更新订单协调器和 GRVT 适配器逻辑，添加止损单的 reduceOnly 和 closePosition 参数，修改默认价格触发器为 LAST
2026-09-09 16:28:06 +00:00 · 2025-10-06 19:17:24 +08:00 · 2025-10-06 19:06:49 +08:00 · 2025-10-06 18:44:16 +08:00 · 2025-10-06 18:06:23 +08:00 · 2025-10-03 16:16:20 +08:00
947 changed files with 167674 additions and 257 deletions
@@ -1,5 +1,5 @@
 # Exchange selection
-EXCHANGE=aster                       # Pick aster (default) or grvt
+EXCHANGE=aster                       # Pick aster (default) or grvt/lighter/backpack/paradex

 # Aster API credentials
 ASTER_API_KEY=
@@ -33,7 +33,7 @@ MAX_CLOSE_SLIPPAGE_PCT=0.05             # Max allowed deviation vs mark when clo
 MAKER_LOSS_LIMIT=0.05                   # Maker loss cap (USDT). Defaults to LOSS_LIMIT if unset
 MAKER_BID_OFFSET=0                      # Bid quote offset from top bid (USDT)
 MAKER_ASK_OFFSET=0                      # Ask quote offset from top ask (USDT)
-MAKER_REFRESH_INTERVAL_MS=1500          # Maker refresh cadence (ms)
+MAKER_REFRESH_INTERVAL_MS=500          # Maker refresh cadence (ms)
 MAKER_MAX_CLOSE_SLIPPAGE_PCT=0.05       # Maker close slippage guard (fallbacks to MAX_CLOSE_SLIPPAGE_PCT)
 MAKER_PRICE_TICK=0.1                    # Maker price tick size (defaults to PRICE_TICK)

@@ -61,3 +61,42 @@ LIGHTER_ENV=testnet                     # mainnet | testnet | staging | dev
 # LIGHTER_MARKET_ID=1                   # Prefer explicit market id when symbols differ
 # LIGHTER_PRICE_DECIMALS=3              # Manual override for price decimals (optional)
 # LIGHTER_SIZE_DECIMALS=3               # Manual override for size decimals (optional)
+
+# Backpack exchange configuration
+# Fill these with your Backpack API credentials and preferences
+
+BACKPACK_API_KEY=
+BACKPACK_API_SECRET=
+BACKPACK_PASSWORD=
+BACKPACK_SUBACCOUNT=
+
+# Use sandbox environment: "true" to enable, otherwise leave as false
+BACKPACK_SANDBOX=false
+
+# Default trading symbol (falls back to TRADE_SYMBOL or BTCUSDC)
+BACKPACK_SYMBOL=BTC_USD_PERP
+
+# Enable verbose adapter logging: set to "1" or "true"
+BACKPACK_DEBUG=false
+
+# Paradex exchange configuration
+# Provide the EVM private key & wallet address for onboarded accounts.
+# When EXCHANGE=paradex these values are used automatically.
+
+PARADEX_PRIVATE_KEY=
+PARADEX_WALLET_ADDRESS=
+
+# Symbol defaults to TRADE_SYMBOL if omitted. Use ccxt unified format like BTC-USD-PERP.
+# PARADEX_SYMBOL=BTC-USD-PERP
+
+# Enable testnet endpoints by setting to "true"; defaults to false (mainnet).
+# PARADEX_SANDBOX=false
+
+# Force disabling ccxt.pro websocket usage by setting to "false" (pro is preferred when installed).
+# PARADEX_USE_PRO=true
+
+# Optional reconnect delay override (milliseconds, e.g., 2000). Leave blank for default.
+# PARADEX_RECONNECT_DELAY_MS=
+
+# Enable verbose adapter logging: set to "1" or "true"
+# PARADEX_DEBUG=false
@@ -0,0 +1,51 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <script>
+
+        document.addEventListener ("DOMContentLoaded", function () {
+
+            const pollTickerContinuously = async function (exchange, symbol) {
+
+                while (true) {
+
+                    try {
+
+                        const ticker = await exchange.watchTicker (symbol)
+
+                        const text = [
+                            exchange.id,
+                            symbol,
+                            JSON.stringify (ticker, undefined, '\n\t')
+                        ]
+
+                        document.getElementById ('content').innerHTML = text.join (' ');
+
+                    } catch (e) {
+
+                        const text = [
+                            e.constructor.name,
+                            e.message,
+                        ]
+
+                        document.getElementById ('content').innerHTML = text.join (' ');
+
+                    }
+                }
+            }
+
+            const exchange = new ccxt.pro.binance ({ enableRateLimit: true })
+            const symbol = 'ETH/BTC'
+
+            pollTickerContinuously (exchange, symbol)
+        })
+    </script>
+</head>
+<body>
+<h1>Hello, CCXT!</h1>
+<p>This example uses websockets to watch changes in price of ETH/BTC</p>
+<pre id="content"></pre>
+</body>
+</html>
@@ -0,0 +1,74 @@
+'use strict';
+
+import ccxt from '../../../js/ccxt.js';
+
+// your version must be 0.7+
+console.log ('CCXT Version:', ccxt.version)
+
+function handle (exchange, symbol, ticker) {
+    console.log (new Date (), exchange.id, symbol, ticker)
+}
+
+async function loop (exchange, symbol) {
+    while (true) {
+        try {
+            const ticker = await exchange.watchMyTrades ()
+            handle (exchange, symbol, ticker)
+            sleep( 10000 )
+        } catch (e) {
+            console.log (symbol, e)
+            // do nothing and retry on next loop iteration
+            // throw e // uncomment to break all loops in case of an error in any one of them
+            // break // you can also break just this one loop if it fails
+        }
+    }
+}
+
+async function main () {
+
+     const exchange = new ccxt.pro.apex ({
+         'apiKey': 'your api Key',
+         'secret': 'your api secret',
+         'walletAddress': 'your eth address',
+         'options': {
+             'accountId': 'your account id',
+             'passphrase': 'your api passphrase',
+             'seeds': 'your zklink omni seed',
+             'brokerId': '',
+         },
+     }) // usd(s)-margined contracts
+    exchange.setSandboxMode(true)
+    //
+    // or
+    //
+    //  const exchange = new ccxt.pro.binance () // spot markets
+    //
+    // WARNING: when using the spot markets mind subscription limits!
+    // don't attempt to subscribe to all of them
+    // the exchanges will not allow that in general
+    // instead, specify a shorter list of symbols to subscribe to
+    //
+    // or
+    //
+    //  const exchange = new ccxt.pro.binancecoinm () // coin-margined contracts
+
+    if (exchange.has['watchTicker']) {
+        await exchange.loadMarkets ()
+        // many symbols
+        //await Promise.all (exchange.symbols.map (symbol => loop (exchange, symbol)))
+        //
+        // or
+        //
+        // const symbols = [ 'BTC/USDT', 'ETH/USDT' ] // specific symbols
+        // await Promise.all (symbols.map (symbol => loop (exchange, symbol)))
+        //
+        // or
+        //
+        await loop (exchange, ['BTC-USDT','ETH-USDT']) // one symbol
+
+    } else {
+        console.log (exchange.id, 'does not support watchTicker yet')
+    }
+}
+
+main ()
@@ -0,0 +1,55 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt')
+
+console.log ('CCXT Version:', ccxt.version)
+
+// This example will run silent and will return your balance only when the balance is updated.
+//
+// 1. launch the example with your keys and keep it running
+// 2. go to the trading section on the website
+// 3. place a order on a spot market
+// 4. see your balance updated in the example
+//
+// Warning! This example might produce a lot of output to your screen
+
+
+async function watchBalance (exchange) {
+    let balance = await exchange.fetchBalance ()
+    console.log ('---------------------------------------------------------')
+    console.log (exchange.iso8601 (exchange.milliseconds ()))
+    console.log (balance, '\n')
+    while (true) {
+        try {
+            const update = await exchange.watchBalance ()
+            balance = exchange.deep_extend (balance, update)
+            // it will print the balance update when the balance changes
+            // if the balance remains unchanged the exchange will not send it
+            console.log ('---------------------------------------------------------')
+            console.log (exchange.iso8601 (exchange.milliseconds ()))
+            console.log (balance, '\n')
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+            break
+        }
+    }
+}
+
+
+async function main() {
+
+     const exchange = new ccxt.pro.binance ({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+    })
+
+    await exchange.loadMarkets ()
+
+    // exchange.verbose = true // uncomment for debugging purposes if necessary
+
+    await watchBalance (exchange)
+
+    await exchange.close ()
+}
+
+main ()
@@ -0,0 +1,48 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt')
+
+console.log ('CCXT Version:', ccxt.version)
+
+let HttpsProxyAgent = undefined
+
+try {
+    HttpsProxyAgent = require ('https-proxy-agent')
+} catch (e) {
+    console.log (e.constructor.name, e.message)
+    console.log ("\nCould not load the HTTPS proxy agent")
+    console.log ("\nPlease, run this command to make sure it's properly installed:")
+    console.log ("\nnpm install https-proxy-agent\n")
+    process.exit ()
+}
+
+async function main () {
+
+    console.log ('Using proxy server', httpsProxyUrl);
+
+    // adjust for your HTTPS proxy URL
+    const httpsProxyUrl = process.env.https_proxy || 'https://username:password@your-proxy.com'
+        , httpsAgent = new HttpsProxyAgent (httpsProxyUrl)
+        , exchange = new ccxt.binance ({
+            httpsAgent: httpsAgent, // ←--------------------- httpsAgent here
+            options: {
+                'ws': {
+                    'options': { agent: httpsAgent }, // ←--- httpsAgent here
+                },
+            },
+        })
+
+    const symbol = 'BTC/USDT'
+    await exchange.loadMarkets ()
+    console.log ('Markets loaded')
+    while (true) {
+        try {
+            const orderbook = await exchange.watchOrderBook (symbol)
+            console.log (exchange.iso8601 (exchange.milliseconds()), symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+        }
+    }
+}
+
+main ()
@@ -0,0 +1,38 @@
+"use strict";
+
+const ccxt = require ('ccxt')
+
+const ohlcvsBySymbol = {}
+
+function handleAllOHLCVs (exchange, ohlcvs, symbol, timeframe) {
+    const now = exchange.iso8601 (exchange.milliseconds ())
+    const lastCandle = exchange.safeValue (ohlcvs, ohlcvs.length - 1)
+    const datetime = exchange.iso8601 (lastCandle[0])
+    console.log (now, datetime, symbol, timeframe, lastCandle.slice (1))
+}
+
+async function pollOHLCV (exchange, symbol, timeframe) {
+    await exchange.throttle (1000) // 1000ms delay between subscriptions
+    while (true) {
+        try {
+            const response = await exchange.watchOHLCV (symbol, timeframe)
+            ohlcvsBySymbol[symbol] = response
+            handleAllOHLCVs(exchange, response, symbol, timeframe)
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+        }
+    }
+}
+
+async function main () {
+
+     const exchange = new ccxt.pro.binance()
+    const markets = await exchange.loadMarkets ()
+    const timeframe = '5m'
+
+    const firstOneHundredSymbols = exchange.symbols.slice (0, 100)
+
+    await Promise.all (firstOneHundredSymbols.map (symbol => pollOHLCV (exchange, symbol, timeframe)))
+}
+
+main ()
@@ -0,0 +1,64 @@
+'use strict';
+
+const ccxt = require ('ccxt');
+
+// your version must be 0.7+
+console.log ('CCXT Version:', ccxt.version)
+
+function handle (exchange, symbol, timeframe, candles) {
+    const lastCandle = candles[candles.length - 1]
+    const lastClosingPrice = lastCandle[4]
+    console.log (new Date (), exchange.id, timeframe, symbol, '\t', lastClosingPrice)
+}
+
+async function loop (exchange, symbol, timeframe) {
+    while (true) {
+        try {
+            const candles = await exchange.watchOHLCV (symbol, timeframe)
+            handle (exchange, symbol, timeframe, candles)
+        } catch (e) {
+            console.log (symbol, e)
+            // do nothing and retry on next loop iteration
+            // throw e // uncomment to break all loops in case of an error in any one of them
+            // break // you can also break just this one loop if it fails
+        }
+    }
+}
+
+async function main () {
+
+     const exchange = new ccxt.pro.binanceusdm () // usd(s)-margined contracts
+    //
+    // or
+    //
+    //  const exchange = new ccxt.pro.binance () // spot markets
+    //
+    // WARNING: when using the spot markets mind subscription limits!
+    // don't attempt to subscribe to all of them
+    // the exchanges will not allow that in general
+    // instead, specify a shorter list of symbols to subscribe to
+    //
+    // or
+    //
+    //  const exchange = new ccxt.pro.binancecoinm () // coin-margined contracts
+
+    if (exchange.has['watchOHLCV']) {
+        await exchange.loadMarkets ()
+        const timeframe = '15m'
+        // many symbols
+        await Promise.all (exchange.symbols.map (symbol => loop (exchange, symbol, timeframe)))
+        //
+        // or
+        //
+        // const symbols = [ 'BTC/USDT', 'ETH/USDT' ] // specific symbols
+        // await Promise.all (symbols.map (symbol => loop (exchange, symbol, timeframe)))
+        //
+        // or
+        //
+        // await loop (exchange, 'BTC/USDT', timeframe) // one symbol
+    } else {
+        console.log (exchange.id, 'does not support watchOHLCV yet')
+    }
+}
+
+main ()
@@ -0,0 +1,62 @@
+'use strict';
+
+const ccxt = require ('ccxt');
+
+// your version must be 0.7+
+console.log ('CCXT Version:', ccxt.version)
+
+function handle (exchange, symbol, ticker) {
+    console.log (new Date (), exchange.id, symbol, ticker['last'])
+}
+
+async function loop (exchange, symbol) {
+    while (true) {
+        try {
+            const ticker = await exchange.watchTicker (symbol)
+            handle (exchange, symbol, ticker)
+        } catch (e) {
+            console.log (symbol, e)
+            // do nothing and retry on next loop iteration
+            // throw e // uncomment to break all loops in case of an error in any one of them
+            // break // you can also break just this one loop if it fails
+        }
+    }
+}
+
+async function main () {
+
+     const exchange = new ccxt.pro.binanceusdm () // usd(s)-margined contracts
+    //
+    // or
+    //
+    //  const exchange = new ccxt.pro.binance () // spot markets
+    //
+    // WARNING: when using the spot markets mind subscription limits!
+    // don't attempt to subscribe to all of them
+    // the exchanges will not allow that in general
+    // instead, specify a shorter list of symbols to subscribe to
+    //
+    // or
+    //
+    //  const exchange = new ccxt.pro.binancecoinm () // coin-margined contracts
+
+    if (exchange.has['watchTicker']) {
+        await exchange.loadMarkets ()
+        // many symbols
+        await Promise.all (exchange.symbols.map (symbol => loop (exchange, symbol)))
+        //
+        // or
+        //
+        // const symbols = [ 'BTC/USDT', 'ETH/USDT' ] // specific symbols
+        // await Promise.all (symbols.map (symbol => loop (exchange, symbol)))
+        //
+        // or
+        //
+        // await loop (exchange, 'BTC/USDT') // one symbol
+
+    } else {
+        console.log (exchange.id, 'does not support watchTicker yet')
+    }
+}
+
+main ()
@@ -0,0 +1,68 @@
+'use strict';
+
+const ccxt = require ('ccxt');
+const asTable  = require ('as-table').configure ({ delimiter: ' | ' })
+
+console.log ('CCXT Version:', ccxt.version)
+
+
+async function loop (exchange, symbol, timeframe, completeCandlesOnly = false) {
+    const durationInSeconds = exchange.parseTimeframe (timeframe)
+    const durationInMs = durationInSeconds * 1000
+    while (true) {
+        try {
+            const trades = await exchange.watchTrades (symbol)
+            if (trades.length > 0) {
+                const currentMinute = parseInt (exchange.milliseconds () / durationInMs)
+                let ohlcvc = exchange.buildOHLCVC (trades, timeframe)
+                if (completeCandlesOnly) {
+                    ohlcvc = ohlcvc.filter (candle => parseInt (candle[0] / durationInMs) < currentMinute)
+                }
+                if (ohlcvc.length > 0) {
+                    console.log("Symbol:", symbol, "timeframe:", timeframe);
+                    console.log ('-----------------------------------------------------------')
+                    console.log (asTable (ohlcvc))
+                    console.log ('-----------------------------------------------------------')
+                }
+            }
+        } catch (e) {
+            console.log (symbol, e)
+            // do nothing and retry on next loop iteration
+            // throw e // uncomment to break all loops in case of an error in any one of them
+            // break // you can also break just this one loop if it fails
+        }
+    }
+}
+
+async function main () {
+    // select the exchange
+     const exchange = new ccxt.pro.ftx ()
+
+    if (exchange.has['watchTrades']) {
+        await exchange.loadMarkets ()
+        // Change this value accordingly
+        const timeframe = '1m'
+
+        const allSymbols = exchange.symbols;
+
+        // arbitrary n symbols
+        const limit = 5;
+        // const selectedSymbols = allSymbols.slice(0, limit);
+        // you can also specify the symbols manually
+        // example:
+        // const selectedSymbols = ['BTC/USDT', 'LTC/USDT']
+
+        console.log(selectedSymbols);
+
+        // Use this variable to choose if only complete candles 
+        // should be considered
+        const completeCandlesOnly = true
+
+        await Promise.all (selectedSymbols.map (symbol => loop (exchange, symbol, timeframe, completeCandlesOnly)))
+
+    } else {
+        console.log (exchange.id, 'does not support watchTrades yet')
+    }
+}
+
+main ()
@@ -0,0 +1,82 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+console.log ('CCXT Version:', ccxt.version)
+
+let ohlcvs = {}
+
+async function log (exchange, symbol, timeframe) {
+    const market = exchange.market (symbol)
+    const duration = exchange.parseTimeframe (timeframe) * 1000
+    console.log (exchange.iso8601 (exchange.milliseconds ()), 'Warming up, waiting for at least one trade...')
+    while (!Object.keys (ohlcvs).length) {
+        await exchange.throttle (1)
+    }
+    let now = exchange.milliseconds ()
+    const start = (parseInt (now / duration) + 1) * duration
+    console.log (exchange.iso8601 (exchange.milliseconds ()), 'Trades started arriving, waiting till', exchange.iso8601 (start))
+    await exchange.sleep (start - now)
+    console.log (exchange.iso8601 (exchange.milliseconds ()), 'Done warming up')
+    for (let i = 0;; i++) {
+        now = exchange.milliseconds ()
+        let candle = Object.values (ohlcvs)[0]
+        console.log ('')
+        console.log (exchange.iso8601 (now), '------------------------------------------------------')
+        console.log ('Datetime                ', 'Timestamp    ', ... [ 'Open', 'High', 'Low', 'Close', market['base'], market['quote'] ].map (x => x.toString ().padEnd (10, ' ')))
+        for (let j = start; j < now; j += duration) {
+            if (!(j in ohlcvs)) {
+                ohlcvs[j] = [ j, candle[4], candle[4], candle[4], candle[4], 0, 0 ]
+            }
+            candle = exchange.safeValue (ohlcvs, j);
+            console.log (exchange.iso8601 (j), ... candle.map (x => x.toString ().padEnd (10, ' ')))
+        }
+        ohlcvs = exchange.indexBy (Object.values (ohlcvs).slice (-1000), 0)
+        await exchange.sleep(1000)
+    }
+}
+
+async function watch (exchange, symbol, timeframe) {
+    console.log ('Starting', exchange.id, symbol)
+    const duration = exchange.parseTimeframe (timeframe) * 1000
+    while (true) {
+        try {
+            const trades = await exchange.watchTrades(symbol)
+            for (const trade of trades) {
+                const timestamp = parseInt(trade['timestamp'] / duration) * duration
+                let candle = exchange.safe_value(ohlcvs, timestamp)
+                if (candle) {
+                    candle[2] = Math.max(trade['price'], candle[2])
+                    candle[3] = Math.min(trade['price'], candle[3])
+                    candle[4] = trade['price']
+                    candle[5] = exchange.parseNumber(exchange.amountToPrecision(symbol, trade['amount'] + candle[5]))
+                    candle[6] = exchange.parseNumber(exchange.costToPrecision(symbol, trade['cost'] + candle[6]))
+                } else {
+                    candle = [
+                        timestamp,
+                        trade['price'],
+                        trade['price'],
+                        trade['price'],
+                        trade['price'],
+                        exchange.parseNumber(exchange.amountToPrecision(symbol, trade['amount'])),
+                        exchange.parseNumber(exchange.costToPrecision(symbol, trade['cost'])),
+                    ]
+                }
+                ohlcvs[timestamp] = candle
+            }
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+        }
+    }
+}
+
+async function main() {
+    const symbol = 'BTC/USDT'
+     const exchange = new ccxt.pro.binance ({ 'newUpdates': true })
+    await exchange.loadMarkets ()
+    const timeframe = '1m'
+    await Promise.all ([ watch (exchange, symbol, timeframe), log (exchange, symbol, timeframe) ])
+    await exchange.close ()
+}
+
+main()
@@ -0,0 +1,59 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+console.log ('CCXT Version:', ccxt.version)
+
+
+async function main() {
+    let ohlcvs = {}
+    const symbol = 'BTC/USDT'
+     const exchange = new ccxt.pro.binance ({ 'newUpdates': true })
+    await exchange.loadMarkets ()
+    const market = exchange.market (symbol)
+    const timeframe = '1m'
+    const duration = exchange.parseTimeframe (timeframe) * 1000
+    console.log ('Starting', exchange.id, symbol)
+    while (true) {
+        try {
+            const trades = await exchange.watchTrades(symbol)
+            for (const trade of trades) {
+                const timestamp = parseInt(trade['timestamp'] / duration) * duration
+                let candle = exchange.safe_value(ohlcvs, timestamp)
+                if (candle) {
+                    candle[2] = Math.max(trade['price'], candle[2])
+                    candle[3] = Math.min(trade['price'], candle[3])
+                    candle[4] = trade['price']
+                    candle[5] = exchange.parseNumber(exchange.amountToPrecision(symbol, trade['amount'] + candle[5]))
+                    candle[6] = exchange.parseNumber(exchange.costToPrecision(symbol, trade['cost'] + candle[6]))
+                } else {
+                    candle = [
+                        timestamp,
+                        trade['price'],
+                        trade['price'],
+                        trade['price'],
+                        trade['price'],
+                        exchange.parseNumber(exchange.amountToPrecision(symbol, trade['amount'])),
+                        exchange.parseNumber(exchange.costToPrecision(symbol, trade['cost'])),
+                    ]
+                }
+                ohlcvs[timestamp] = candle
+            }
+            console.log ('')
+            console.log (exchange.iso8601 (exchange.milliseconds ()), '------------------------------------------------------')
+            const values = Object.values (ohlcvs).slice (-1000)
+            ohlcvs = exchange.indexBy (values, 0)
+            console.log ('Datetime                ', 'Timestamp    ', ... [ 'Open', 'High', 'Low', 'Close', market['base'], market['quote'] ].map (x => x.toString ().padEnd (10, ' ')))
+            for (let i = 0; i < values.length; i++) {
+                const candle = values[i]
+                console.log (exchange.iso8601 (candle[0]), ... candle.map (x => x.toString ().padEnd (10, ' ')))
+            }
+
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+        }
+    }
+    await exchange.close ()
+}
+
+main()
@@ -0,0 +1,72 @@
+"use strict";
+
+/*  ------------------------------------------------------------------------ */
+
+const ccxt        = require ('../../../ccxt.js').pro
+    , asTable     = require ('as-table') // .configure ({ print: require ('string.ify').noPretty })
+    , log         = require ('ololog').noLocate
+    , ansi        = require ('ansicolor').nice
+
+;(async function test () {
+
+    let total = 0
+    let missing = 0
+    let implemented = 0
+    let emulated = 0
+
+    const exchanges = ccxt.exchanges
+        .map (id => new ccxt[id]())
+        .filter (exchange => exchange.has.ws)
+
+    log (
+        asTable (
+            exchanges
+                .map (exchange => {
+
+                    let result = {};
+
+                    [
+                        'ws',
+                        'watchOrderBook',
+                        'watchTicker',
+                        'watchTrades',
+                        'watchOHLCV',
+                        'watchBalance',
+                        'watchOrders',
+                        'watchMyTrades',
+
+                    ].forEach (key => {
+
+                        total += 1
+
+                        let capability = (key in exchange.has) ?
+                            exchange.has[key].toString () :
+                            'undefined'
+
+                        if (!exchange.has[key]) {
+                            capability = exchange.id.red.dim
+                            missing += 1
+                        } else if (exchange.has[key] === 'emulated') {
+                            capability = exchange.id.yellow
+                            emulated += 1
+                        } else {
+                            capability = exchange.id.green
+                            implemented += 1
+                        }
+
+                        result[key] = capability
+                    })
+
+                    return result
+                })
+        )
+    )
+
+    log ('Summary:',
+        exchanges.length.toString ().green, 'exchanges,',
+        implemented.toString ().green, 'methods implemented,',
+        emulated.toString ().yellow, 'emulated,',
+        missing.toString ().red, 'missing,',
+        total.toString (), 'total')
+
+}) ()
@@ -0,0 +1,46 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt')
+
+console.log ("CCXT Pro Version:", ccxt.version)
+
+const orderbooks = {}
+
+let run = true
+
+async function watchOrderBook (exchange, symbol) {
+    while (run) {
+        try {
+            const orderbook = await exchange.watchOrderBook (symbol)
+            orderbooks[symbol] = orderbook
+            console.log (exchange.iso8601 (exchange.milliseconds ()), orderbook['datetime'], orderbook['nonce'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+        }
+    }
+}
+
+
+async function stop (exchange) {
+    await exchange.sleep (10000)
+    run = false
+    await exchange.close ()
+}
+
+
+async function main () {
+     const exchange = new ccxt.pro.binance ()
+    await exchange.loadMarkets ()
+    exchange.verbose = true
+    const symbols = [
+        'BTC/USDT',
+        'ETH/USDT',
+    ]
+    stop (exchange).then (() => {})
+    await Promise.all (symbols.map (symbol => watchOrderBook (exchange, symbol)))
+    console.log ('Sleeping for a moment...')
+    await exchange.sleep (10000)
+    console.log ('Done')
+}
+
+main ()
@@ -0,0 +1,30 @@
+'use strict';
+
+const ccxt = require ('ccxt')
+
+console.log ("CCXT Pro Version:", ccxt.version)
+
+async function loop (exchange, method, symbol) {
+    while (true) {
+        try {
+            const orderbook = await exchange[method] (symbol)
+            console.log (exchange.iso8601 (exchange.milliseconds ()), orderbook['datetime'], orderbook['nonce'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+        }
+    }
+}
+
+async function main () {
+     const exchange = new ccxt.pro.gateio ({
+        'options': {'defaultType':'swap'}
+    })
+    await exchange.loadMarkets ()
+    // exchange.verbose = true // uncomment for debugging purposes if necessary
+    const symbols = [
+        'ANC/USDT:USDT',
+    ]
+    await Promise.all (symbols.map (symbol => loop (exchange, 'fetchOrderBook', symbol)))
+}
+
+main ()
@@ -0,0 +1,23 @@
+const ccxt = require ('../../../ccxt')
+
+console.log ('CCXT Pro version:', ccxt.version)
+
+async function main () {
+     const exchange = new ccxt.pro.gateio ({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+    })
+    await exchange.loadMarkets ()
+    exchange.verbose = true
+    while (true) {
+        try {
+            const response = await exchange.watchBalance ()
+            console.log (new Date (), response)
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+            await exchange.sleep (1000)
+        }
+    }
+}
+
+main ()
@@ -0,0 +1,71 @@
+'use strict';
+
+const ccxt = require ('ccxt')
+
+console.log ("CCXT Pro Version:", ccxt.version)
+
+const orderbooks = {}
+
+async function watchAllSymbols (exchange, symbols) {
+    while (true) {
+        const keys = Object.keys (orderbooks);
+        if (symbols.length === keys.length) {
+            console.log ('\n\n\n\n\n')
+            console.log ('----------------------------------------------------')
+            console.log ('All orderbooks received at least one update:');
+            for (let i = 0; i < symbols.length; i++) {
+                const symbol = symbols[i]
+                const orderbook = orderbooks[symbol]
+                console.log (exchange.iso8601 (exchange.milliseconds ()), orderbook['datetime'], orderbook['nonce'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+            }
+            console.log ('----------------------------------------------------')
+            console.log ('\n\n\n\n\n')
+            // process.exit () // stop here if you want
+            break
+        } else {
+            await exchange.sleep (1000);
+        }
+    }
+}
+
+async function watchOrderBook (exchange, symbol) {
+    while (true) {
+        try {
+            const orderbook = await exchange.watchOrderBook (symbol)
+            orderbooks[symbol] = orderbook
+            console.log (exchange.iso8601 (exchange.milliseconds ()), orderbook['datetime'], orderbook['nonce'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+        }
+    }
+}
+
+async function main () {
+     const exchange = new ccxt.pro.gateio ({
+        'options': {
+            'defaultType': 'swap',
+        },
+    })
+    await exchange.loadMarkets ()
+    // exchange.verbose = true // uncomment for debugging purposes if necessary
+    const symbols = [
+        // 'SOS/USDT:USDT',
+        // 'JASMY/USDT:USDT',
+        // 'SLP/USDT:USDT',
+        'ACH/USDT:USDT',
+        'MKISHU/USDT:USDT',
+        // 'GMT/USDT:USDT',
+        // 'ASTR/USDT:USDT',
+        'RAMP/USDT:USDT',
+        'RSR/USDT:USDT',
+        // 'RACA/USDT:USDT',
+        // 'ROOK/USDT:USDT',
+        // 'ROSE/USDT:USDT',
+    ]
+    await Promise.all ([
+        watchAllSymbols (exchange, symbols),
+        ... symbols.map (symbol => watchOrderBook (exchange, symbol))
+    ])
+}
+
+main ()
@@ -0,0 +1,43 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+let stop = false
+
+async function shutdown (milliseconds) {
+    await ccxt.sleep (10000)
+    stop = true
+}
+
+async function watchOrderBook (exchangeId, symbol) {
+
+     const exchange = new ccxt.pro[exchangeId] ()
+    await exchange.loadMarkets ()
+    // exchange.verbose = true
+    while (!stop) {
+        try {
+            const orderbook = await exchange.watchOrderBook (symbol)
+            console.log (new Date (), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (symbol, e)
+            stop = true
+            break
+        }
+    }
+    await exchange.close ()
+}
+
+async function main () {
+    const streams = {
+        'binance': 'BTC/USDT',
+        'ftx': 'BTC/USDT',
+    };
+
+    await Promise.all ([
+        shutdown (10000),
+        ... Object.entries (streams).map (([ exchangeId, symbol ]) => watchOrderBook (exchangeId, symbol))
+    ])
+
+}
+
+main()
@@ -0,0 +1,37 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+(async () => {
+
+    const streams = {
+        'binance': 'BTC/USDT',
+        'bittrex': 'BTC/USDT',
+        'poloniex': 'BTC/USDT',
+        'bitfinex': 'BTC/USDT',
+        'hitbtc': 'BTC/USDT',
+        'upbit': 'BTC/USDT',
+        'coinbasepro': 'BTC/USD',
+        'ftx': 'BTC/USDT',
+        'okex': 'BTC/USDT',
+        'gateio': 'BTC/USDT',
+    };
+
+    await Promise.all (Object.keys (streams).map (exchangeId =>
+
+        (async () => {
+
+             const exchange = new ccxt.pro[exchangeId] ({ enableRateLimit: true })
+            const symbol = streams[exchangeId]
+            while (true) {
+                try {
+                    const orderbook = await exchange.watchOrderBook (symbol)
+                    console.log (new Date (), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+                } catch (e) {
+                    console.log (symbol, e)
+                }
+            }
+
+        }) ())
+    )
+}) ()
@@ -0,0 +1,48 @@
+'use strict';
+
+const ccxt = require ('ccxt')
+    , exchange = new ccxt.okex ({
+        apiKey: 'YOUR_API_KEY',
+        secret: 'YOUR_API_SECRET',
+        password: 'YOUR_API_PASSWORD',
+        enableRateLimit: true,
+        options: { defaultType: 'futures' },
+    })
+    , symbol = 'BTC/USDT:USDT-201225'
+    , amount = 1 // how may contracts
+    , price = undefined // or your limit price
+    , side = 'buy' // or 'sell'
+    , type = '1' // 1 open long, 2 open short, 3 close long, 4 close short for futures
+    , order_type = '4' // 0 = limit order, 4 = market order
+
+console.log ('CCXT Pro Version: ', ccxt.version)
+
+async function main () {
+
+    try {
+
+        await exchange.loadMarkets ()
+
+        // exchange.verbose = true // uncomment for debugging
+        // open long market price order
+        const order = await exchange.createOrder(symbol, 'market', side, amount, price, { type });
+        // --------------------------------------------------------------------
+        // open long market price order
+        // const order = await exchange.createOrder(symbol, type, side, amount, price, { order_type });
+        // --------------------------------------------------------------------
+        // close short market price order
+        // const order = await exchange.createOrder(symbol, 'market', side, amount, price, { type, order_type });
+        // --------------------------------------------------------------------
+        // close short market price order
+        // const order = await exchange.createOrder(symbol, '4', side, amount, price, { order_type });
+        // ...
+
+        console.log (order)
+
+    } catch (e) {
+
+        console.log (e.constructor.name, e.message)
+    }
+}
+
+main ()
@@ -0,0 +1,54 @@
+const ccxt = require ('ccxt')
+
+console.log ('Node.js:', process.version)
+console.log ('CCXT Pro v' + ccxt.version)
+
+ const exchange = new ccxt.pro.okex ({
+    'apiKey': 'YOUR_API_KEY',
+    'secret': 'YOUR_API_SECRET',
+    'password': 'YOUR_API_PASWORD'
+})
+
+async function watchBalance (code) {
+
+    while (true) {
+        const balance = await exchange.watchBalance ({
+            'code': code,
+        })
+        console.log ('New', code, 'balance is: ', balance[code])
+    }
+}
+
+async function createOrder (symbol, type, side, amount, price = undefined, params = {}) {
+
+    console.log ('Creating', symbol, type, 'order')
+    const order = await exchange.createOrder (symbol, type, side, amount, price, params);
+    console.log (symbol, type, side, 'order created')
+    console.log (order)
+}
+
+;(async () => {
+
+    await exchange.loadMarkets ()
+    console.log (exchange.id, 'markets loaded')
+
+    const symbol = 'ETH/USDT'
+    const market = exchange.market (symbol)
+    const quote = market['quote']
+
+    // run in parallel without await
+    console.log ('Watching', quote, 'balance')
+    watchBalance (quote)
+
+    // wait a bit to allow it to subscribe
+    await exchange.sleep (3000)
+
+    const ticker = await exchange.watchTicker (symbol)
+    const type = 'market'
+    const side = 'buy'
+    const amount = 0.1
+    const price = ticker['bid']
+
+    await createOrder (symbol, type, side, amount, price)
+
+}) ()
@@ -0,0 +1,31 @@
+import ccxt from '../../../js/ccxt.js';
+
+async function main() {
+    const exchange = new ccxt.pro.okx()
+    await exchange.loadMarkets()
+    // exchange.verbose = true
+    while (true) {
+        try {
+
+            // don't do this, specify a list of symbols to watch for watchTickers
+            // or a very large subscription message will crash your WS connection
+            // const tickers = await exchange.watchTickers ()
+
+            // do this instead
+            const symbols = [
+                'ETH/BTC',
+                'BTC/USDT',
+                'ETH/USDT',
+                // ...
+            ]
+            const tickers = await exchange.watchTickers (symbols)
+            symbols = Object.keys(tickers)
+            console.log (new Date(), 'received', symbols.length, 'symbols', ... symbols.slice(0,5).join(', '), '...')
+        } catch (e) {
+            console.log (new Date(), e.constructor.name, e.message)
+            break
+        }
+    }
+}
+
+main()
@@ -0,0 +1,46 @@
+'use strict';
+
+const ccxt = require ('ccxt')
+
+console.log ('CCXT Version:', ccxt.version)
+
+async function watchOrders(exchange) {
+    while (true) {
+        try {
+            const orders = await exchange.watchOrders() // await here
+            console.log(orders)
+        } catch (e) {
+            console.log(e)
+        }
+    }
+}
+
+async function watchBalance(exchange) {
+    while (true) {
+        try {
+            const balance = await exchange.watchBalance() // await here
+            console.log(balance)
+        } catch (e) {
+            console.log(e)
+        }
+    }
+}
+
+async function main() {
+     const exchange = new ccxt.pro.binance({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+        'password': 'IF NECESSARY',
+        // etc...
+    })
+    await exchange.loadMarkets () // await here
+
+    // exchange.verbose = true // uncomment for debugging purposes if necessary
+
+    watchOrders(exchange) // no await
+    watchBalance(exchange) // no await
+
+    await exchange.close()
+}
+
+main()
@@ -0,0 +1,26 @@
+'use strict';
+
+const ccxt = require ('ccxt');
+
+(async () => {
+
+     const exchange = new ccxt.pro.binance ({ enableRateLimit: true })
+    const symbols = [ 'BTC/USDT', 'ETH/BTC', 'ETH/USDT' ]
+
+    const loop = async (symbol) => {
+        while (true) {
+            try {
+                const orderbook = await exchange.watchOrderBook (symbol)
+                console.log (new Date (), symbol, orderbook['asks'][0], orderbook['bids'][0])
+            } catch (e) {
+                console.log (symbol, e)
+                // do nothing and retry on next loop iteration
+                // throw e // uncomment to break all loops in case of an error in any one of them
+                // break // you can also break just this one loop if it fails
+            }
+        }
+    }
+
+    await Promise.all (symbols.map (symbol => loop (symbol)))
+
+}) ()
@@ -0,0 +1,28 @@
+'use strict';
+
+const ccxt = require ('ccxt');
+
+(async () => {
+
+     const exchange = new ccxt.pro.binance ({ enableRateLimit: true })
+    const symbols = [ 'BTC/USDT', 'ETH/BTC', 'ETH/USDT' ]
+
+    await Promise.all (symbols.map (symbol =>
+
+        (async () => {
+
+            while (true) {
+                try {
+                    const orderbook = await exchange.watchOrderBook (symbol)
+                    console.log (new Date (), symbol, orderbook['asks'][0], orderbook['bids'][0])
+                } catch (e) {
+                    console.log (symbol, e)
+                    // do nothing and retry on next loop iteration
+                    // throw e // uncomment to break all loops in case of an error in any one of them
+                    // break // you can also break just this one loop if it fails
+                }
+            }
+
+        }) ())
+    )
+}) ()
@@ -0,0 +1,30 @@
+'use strict';
+
+const ccxt = require ('ccxt')
+    , SocksProxyAgent = require ('socks-proxy-agent')
+    , socks = 'socks://127.0.0.1:7000'
+    , socksAgent = new SocksProxyAgent (socks)
+    , exchange = new ccxt.binance ({
+        enableRatLimit: true,
+        httpsAgent: socksAgent, // ←--------------------- socksAgent here
+        options: {
+            'ws': {
+                'options': { agent: socksAgent }, // ←--- socksAgent here
+            },
+        },
+    })
+
+;(async () => {
+    console.log (socks)
+    const symbol = 'BTC/USDT'
+    await exchange.loadMarkets ()
+    console.log ('Markets loaded')
+    while (true) {
+        try {
+            const orderbook = await exchange.watchOrderBook (symbol)
+            console.log (exchange.iso8601 (exchange.milliseconds()), symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (e.constructor.name, e.message)
+        }
+    }
+}) ()
@@ -0,0 +1,40 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+async function watchOrderBook (exchange, symbol) {
+    while (true) {
+        try {
+            const method = exchange.has.watchOrderBook ? 'watchOrderBook' : 'fetchOrderBook'
+            const orderbook = await exchange[method](symbol)
+            console.log (new Date (), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (symbol, e)
+            process.exit ()
+        }
+    }
+}
+
+async function watchExchange (exchangeId, symbols) {
+     const exchange = new ccxt.pro[exchangeId] ()
+    await exchange.loadMarkets ()
+    await Promise.all (symbols.map (symbol => watchOrderBook (exchange, symbol)))
+}
+
+async function main () {
+    const streams = {
+        'ftx': [
+            'BTC/USDT',
+            'ETH/BTC',
+        ],
+        'coinex': [
+            'BTC/USDT',
+            'ETH/BTC',
+        ],
+    };
+
+    const entries = Object.entries (streams)
+    await Promise.all (entries.map (([ exchangeId, symbols ]) => watchExchange (exchangeId, symbols)))
+}
+
+main()
@@ -0,0 +1,38 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+async function watchOrderBook (exchange, symbol) {
+    while (true) {
+        try {
+            const orderbook = await exchange.watchOrderBook (symbol)
+            console.log (new Date (), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (symbol, e)
+        }
+    }
+}
+
+async function watchExchange (exchangeId, symbols) {
+     const exchange = new ccxt.pro[exchangeId] ()
+    await exchange.loadMarkets ()
+    await Promise.all (symbols.map (symbol => watchOrderBook (exchange, symbol)))
+}
+
+async function main () {
+    const streams = {
+        'binance': [
+            'BTC/USDT',
+            'ETH/BTC',
+        ],
+        'ftx': [
+            'BTC/USDT',
+            'ETH/BTC',
+        ],
+    };
+
+    const entries = Object.entries (streams)
+    await Promise.all (entries.map (([ exchangeId, symbols ]) => watchExchange (exchangeId, symbols)))
+}
+
+main()
@@ -0,0 +1,40 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+console.log ('CCXT Version:', ccxt.version)
+
+
+async function watchTickerLoop (exchange, symbol) {
+    // exchange.verbose = true // uncomment for debugging purposes if necessary
+    while (true) {
+        try {
+            const ticker = await exchange.watchTicker (symbol)
+            console.log (new Date (), exchange.id, symbol, ticker['last'])
+        } catch (e) {
+            console.log (symbol, e)
+            // do nothing and retry on next loop iteration
+            // throw e // uncomment to break all loops in case of an error in any one of them
+            // break // you can also break just this one loop if it fails
+        }
+    }
+}
+
+async function exchangeLoop (exchangeId, symbols) {
+     const exchange = new ccxt.pro[exchangeId]()
+    await exchange.loadMarkets ()
+    const loops = symbols.map (symbol => watchTickerLoop (exchange, symbol))
+    await Promise.all (loops)
+    await exchange.close ()
+}
+
+async function main () {
+    const exchanges = {
+        'binance': [ 'BTC/USDT', 'ETH/USDT' ],
+        'ftx': [ 'BTC/USD', 'ETH/USD' ],
+    }
+    const loops = Object.entries (exchanges).map (([ exchangeId, symbols ]) => exchangeLoop (exchangeId, symbols))
+    await Promise.all (loops)
+}
+
+main ()
@@ -0,0 +1,27 @@
+'use strict';
+
+const ccxt = require ('ccxt');
+
+async function watchOrderBook (exchangeId, symbol) {
+
+     const exchange = new ccxt.pro[exchangeId] ()
+    while (true) {
+        try {
+            const orderbook = await exchange.watchOrderBook (symbol)
+            console.log (new Date (), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+        } catch (e) {
+            console.log (symbol, e)
+        }
+    }
+}
+
+async function main () {
+    const streams = {
+        'binance': 'BTC/USDT',
+        'ftx': 'BTC/USDT',
+    };
+
+    await Promise.all (Object.entries (streams).map (([ exchangeId, symbol ]) => watchOrderBook (exchangeId, symbol)))
+}
+
+main()
@@ -0,0 +1,43 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+console.log ('CCXT Version:', ccxt.version);
+
+async function watchExchange (exchangeId, symbol) {
+
+     const exchange = new ccxt.pro[exchangeId] ({
+        newUpdates: true,
+    })
+
+    await exchange.loadMarkets ();
+
+    // exchange.verbose = true // uncomment for debugging purposes if necessary
+
+    while (true) {
+        try {
+            const trades = await exchange.watchTrades (symbol)
+            for (let i = 0; i < trades.length; i++) {
+                const trade = trades[i]
+                console.log (exchange.iso8601 (exchange.milliseconds ()), exchange.id, trade['symbol'], trade['id'], trade['datetime'], trade['price'], trade['amount'])
+            }
+        } catch (e) {
+            console.log (symbol, e)
+        }
+    }
+}
+
+async function main () {
+
+    const streams = {
+        'binance': 'BTC/USDT',
+        'okex': 'BTC/USDT',
+        'kraken': 'BTC/USD',
+    };
+
+    const values = Object.entries (streams)
+    const promises = values.map (([ exchangeId, symbol ]) => watchExchange (exchangeId, symbol))
+    await Promise.all (promises)
+}
+
+main ()
@@ -0,0 +1,42 @@
+'use strict';
+
+const ccxt = require ('../../../ccxt');
+
+(async () => {
+
+    const streams = {
+        'binance': 'BTC/USDT',
+        'okex': 'BTC/USDT'
+    };
+
+    await Promise.all (Object.keys (streams).map (exchangeId =>
+
+        (async () => {
+
+             const exchange = new ccxt.pro[exchangeId] ({
+                enableRateLimit: true,
+                options: {
+                    tradesLimit: 100, // lower = better, 1000 by default
+                },
+            })
+            const symbol = streams[exchangeId]
+            let lastId = ''
+            while (true) {
+                console.log ('---')
+                try {
+                    const trades = await exchange.watchTrades (symbol)
+                    for (let i = 0; i < trades.length; i++) {
+                        const trade = trades[i]
+                        if (trade['id'] > lastId) {
+                            console.log (exchange.iso8601 (exchange.milliseconds ()), exchange.id, trade['symbol'], trade['id'], trade['datetime'], trade['price'], trade['amount'])
+                            lastId = trade['id']
+                        }
+                    }
+                } catch (e) {
+                    console.log (symbol, e)
+                }
+            }
+
+        }) ())
+    )
+}) ()
@@ -0,0 +1,29 @@
+'use strict';
+
+const ccxt = require ('ccxt');
+
+console.log ('CCXT Version:', ccxt.version)
+
+async function watchTrades (exchange, symbol) {
+
+    while (true) {
+        try {
+            const trades = await exchange.watchTrades (symbol)
+            console.log (new Date (), exchange.id, symbol, trades.length, 'trades')
+        } catch (e) {
+            console.log (symbol, e)
+        }
+    }
+}
+
+async function main () {
+    const symbols = [ 'USDT/THB', 'BTC/THB', 'ETH/THB' ]
+     const exchange = new ccxt.pro.zipmex({
+        'newUpdates': true
+    })
+    const markets = await exchange.loadMarkets ()
+    exchange.verbose = true
+    await Promise.all (symbols.map ((symbol) => watchTrades (exchange, symbol)))
+}
+
+main()
@@ -0,0 +1,29 @@
+// see this issue for details
+// https://github.com/ccxt/ccxt/issues/6659
+
+const ccxt = require ('ccxt')
+
+ const exchange = new ccxt.pro.kraken ()
+
+function yellow (s) {
+    return '\x1b[33m' + s + '\x1b[0m'
+}
+
+async function runWs () {
+    while (1) {
+        const book = await exchange.watchOrderBook ('ETH/BTC')
+        console.log (new Date (), 'WS  ', book['datetime'], book['bids'][0][0], book['asks'][0][0])
+    }
+}
+
+async function runRest () {
+    while (1) {
+        const book = await exchange.fetchOrderBook ('ETH/BTC')
+        const timestamp = new Date (exchange.last_response_headers['Date']).getTime ()
+        const datetime = exchange.iso8601 (timestamp)
+        console.log (new Date (), 'REST', yellow (datetime), book['bids'][0][0], book['asks'][0][0])
+    }
+}
+
+runWs ()
+runRest ()
@@ -0,0 +1,76 @@
+<?php
+
+error_reporting(E_ALL);
+date_default_timezone_set('UTC');
+
+$root = dirname(dirname(dirname(dirname(__FILE__))));
+include $root . '/ccxt.php';
+
+function create_exchange($exchange_id, $config) {
+
+    $keys = array(
+        'ids',
+        'markets',
+        'markets_by_id',
+        'currencies',
+        'currencies_by_id',
+        'base_currencies',
+        'quote_currencies',
+        'symbols',
+    );
+
+
+    $exchange_class = '\\ccxt\\pro\\' . $exchange_id;
+    $exchange = new $exchange_class($config);
+    $markets_on_disk = "./{$exchange_id}.markets.json";
+
+    $exchange->verbose = true; // this is a debug output to demonstrate which networking calls are being issued
+
+    if (file_exists($markets_on_disk)) {
+
+        $cache = json_decode(file_get_contents($markets_on_disk), true);
+        foreach ($keys as $key) {
+            $exchange->{$key} = $cache[$key];
+        }
+
+    } else {
+
+        $markets = yield $exchange->load_markets();
+        $cache = array();
+        foreach ($keys as $key) {
+            $cache[$key] = $exchange->{$key};
+        }
+        file_put_contents($markets_on_disk, json_encode($cache));
+    }
+
+    return $exchange;
+}
+
+$exchanges = array(
+    array('binance', array(
+        'id' => 'binance1',
+        'apiKey' => 'YOUR_API_KEY_HERE',
+        'secret' => 'YOUR_SECRET_HERE',
+    )),
+    array('binance', array(
+        'id' => 'binance2',
+        'apiKey' => 'YOUR_API_KEY_HERE',
+        'secret' => 'YOUR_SECRET_HERE',
+    )),
+);
+
+$loop = function($exchange_id, $config) {
+    $exchange = yield create_exchange($exchange_id, $config);
+    $exchange->verbose = true;
+    while (true) {
+        $response = yield $exchange->watch_balance();
+        print('--------------------------------------------------------------');
+        print($exchange->id);
+        print($response);
+    }
+};
+
+
+foreach ($exchanges as $exchange) {
+    \React\Async\coroutine($loop, $exchange[0], $exchange[1]);
+}
@@ -0,0 +1,27 @@
+<?php
+
+$root = dirname(dirname(dirname(dirname(__FILE__))));
+include $root . '/ccxt.php';
+
+
+$config = array('enableRateLimit' => true);
+$binance = new \ccxt\pro\binance($config);
+$bittrex = new \ccxt\pro\bittrex($config);
+$symbol = "BTC/USDT";
+
+$loop = function($exchange, $symbol) {
+    echo 'got inside' . PHP_EOL;
+    for ($i = 0; $i < 5; $i++) {
+        $ticker = yield $exchange->watch_ticker($symbol);
+        print_ticker($ticker, $exchange->id, $symbol);
+    }
+};
+
+function print_ticker($ticker, $exchange_name, $symbol) {
+    $bid = $ticker['bid'];
+    $ask = $ticker['ask'];
+    echo "$exchange_name $symbol - bid: $bid <> ask: $ask" . PHP_EOL;
+}
+
+\React\Async\coroutine($loop, $bittrex, $symbol);
+\React\Async\coroutine($loop, $binance, $symbol);
@@ -0,0 +1,30 @@
+<?php
+
+$root = dirname(dirname(dirname(dirname(__FILE__))));
+include $root . '/ccxt.php';
+
+$id = 'aax';
+$exchange_class = '\\ccxt\\pro\\' . $id;
+$exchange = new $exchange_class(array(
+    'enableRateLimit' => true,
+));
+
+$symbols = array('BTC/USDT', 'ETH/USDT', 'ETH/BTC');
+
+function print_orderbook($orderbook, $symbol) {
+    $id = isset($orderbook['nonce']) ? $orderbook['nonce'] : $orderbook['datetime'];
+    echo $id, ' ', $symbol, ' ',
+        count($orderbook['asks']), ' asks ', json_encode($orderbook['asks'][0]), ' ',
+        count($orderbook['bids']), ' bids ', json_encode($orderbook['bids'][0]), "\n";
+}
+
+$loop = function($exchange, $symbol) {
+    while (true) {
+        $orderbook = yield $exchange->watch_order_book($symbol);
+        print_orderbook($orderbook, $symbol);
+    }
+};
+
+foreach ($symbols as $symbol) {
+    \React\Async\coroutine($loop, $exchange, $symbol);
+}
@@ -0,0 +1,41 @@
+<?php
+error_reporting(E_ALL);
+date_default_timezone_set('UTC');
+include dirname(dirname(dirname(dirname(__FILE__)))). '/ccxt.php';
+
+$binance_id = '\\ccxt\\pro\\binance';
+$binance_exchange = new $binance_id( /*[ 'apiKey' => _YOUR_APIKEY_HERE_, 'secret' => _YOUR_SECRET_HERE_ ]*/ ); 
+
+$ftx_id = '\\ccxt\\pro\\ftx';
+$ftx_exchange = new $ftx_id( /*['apiKey' => _YOUR_APIKEY_HERE_, 'secret' => _YOUR_SECRET_HERE_]*/ ); 
+
+$wrapper_func = function($exchange, $symbol, $method_name) {
+    if ($exchange->has[$method_name]) {
+        print ("Starting $method_name for $exchange->id -> $symbol\n");
+        while (true) {
+            try {
+                $orderbook = yield $exchange->$method_name($symbol);
+                print("$exchange->id -> $method_name -> $symbol : " . substr(json_encode($orderbook), 0 , 70) . "...\n");
+            } catch (\Exception $ex) {
+                print($ex->getMessage());
+                sleep(5);
+            }
+        }
+    } else {
+        print ($exchange->id . " API yet doesnt support $method_name");
+    }
+};
+
+function runAsync (...$args) { 
+    \React\Async\coroutine(...$args);
+}
+
+// *** uncomment whichever methods you want to test ***
+// runAsync($wrapper_func, ...[$exchange, 'ETH/USDT', 'watchOrderBook']);
+// runAsync($wrapper_func, ...[$exchange, 'ETH/USDT', 'watchTicker']);
+// runAsync($wrapper_func, ...[$exchange, 'ETH/USDT', 'watchOrders']);
+// runAsync($wrapper_func, ...[$exchange, 'ETH/USDT', 'watchMyTrades']);
+
+runAsync($wrapper_func, ...[$binance_exchange, 'SOL/USDT', 'watchTrades']);
+runAsync($wrapper_func, ...[$ftx_exchange, 'ETH/USDT', 'watchTrades']);
+
@@ -0,0 +1,34 @@
+import ccxt.pro
+from pprint import pprint
+from asyncio import run
+
+
+print('CCXT Version:', ccxt.__version__)
+
+
+async def main():
+    exchange = ccxt.pro.binance({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+    })
+
+    markets = await exchange.load_markets()
+
+    # exchange.verbose = True  # uncomment for debugging purposes if necessary
+
+    symbol = 'ETH/BTC'
+    type = 'limit'  # or 'market'
+    side = 'sell'  # or 'buy'
+    amount = 1.0
+    price = 0.060154  # or None
+
+    order = await exchange.create_order(symbol, type, side, amount, price)
+    canceled = await exchange.cancel_order(order['id'], order['symbol'])
+
+    pprint(canceled)
+
+    await exchange.close()
+
+
+run(main())
+
@@ -0,0 +1,53 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import run
+
+
+print('CCXT Version:', ccxt.__version__)
+
+
+# This example will run silent and will return your balance only when the balance is updated.
+#
+# 1. launch the example with your keys and keep it running
+# 2. go to the trading section on the website
+# 3. place a order on a spot market
+# 4. see your balance updated in the example
+#
+# Warning! This example might produce a lot of output to your screen
+
+
+async def watch_balance(exchange):
+    await exchange.load_markets()
+    # exchange.verbose = True  # uncomment for debugging purposes if necessary
+    balance = await exchange.fetch_balance()
+    print('---------------------------------------------------------')
+    print(exchange.iso8601(exchange.milliseconds()))
+    print(balance)
+    print('')
+    while True:
+        try:
+            update = await exchange.watch_balance()
+            balance = exchange.deep_extend(balance, update)
+            # it will print the balance update when the balance changes
+            # if the balance remains unchanged the exchange will not send it
+            print('---------------------------------------------------------')
+            print(exchange.iso8601(exchange.milliseconds()))
+            print(balance)
+            print('')
+        except Exception as e:
+            print('watch_balance() failed')
+            print(type(e).__name__, str(e))
+            break
+
+
+async def main():
+    exchange = ccxt.pro.binance({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+    })
+    await watch_balance(exchange)
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,39 @@
+import ccxt
+import ccxt.pro
+import asyncio
+
+from pprint import pprint
+
+loop = asyncio.get_event_loop()
+
+
+async def print_balance(exchange, market_type):
+    while True:
+        try:
+            balance = await exchange.watch_balance({'type': market_type})
+            pprint(balance)
+            print('balance of ' + market_type, balance)
+            print(exchange.options[market_type])
+        except ccxt.BaseError as e:
+            print(type(e), e)
+        except Exception as e:
+            print(type(e), e)
+
+
+async def main():
+    exchange = ccxt.pro.binance({
+        "apiKey": "",
+        "secret": "",
+        'enableRateLimit': True,
+        'newUpdates': True,
+    })
+    # you must make an order a transfer first to the websocket to send updates
+    asyncio.ensure_future(print_balance(exchange, 'future'))
+    asyncio.ensure_future(print_balance(exchange, 'delivery'))  # inverse futures settled in BTC
+    asyncio.ensure_future(print_balance(exchange, 'spot'))
+
+
+asyncio.run(main())
+asyncio.ensure_future(main())
+loop.run_forever()
+
@@ -0,0 +1,22 @@
+import ccxt.pro
+from asyncio import run
+
+
+async def main():
+    exchange = ccxt.pro.binance({
+        'options': {
+            'defaultType': 'future',
+        },
+    })
+    symbol = 'BTC/USDT'
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            print(orderbook['bids'][0], orderbook['asks'][0])
+        except Exception as e:
+            print(type(e).__name__, str(e))
+    await exchange.close()
+
+
+run(main())
+
@@ -0,0 +1,27 @@
+import ccxt.pro as ccxt
+from asyncio import run
+
+print('CCXT Version:', ccxt.__version__)
+
+async def main():
+    exchange = ccxt.pro.binance({
+        'options': {
+            'defaultType': 'future',  # spot, margin, future, delivery
+        },
+    })
+    # or
+    # exchange = ccxt.pro.binanceusdm()
+    # or
+    # exchange = ccxt.pro.binancecoinm()
+    symbol = 'BTC/USDT'
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            print(exchange.iso8601(exchange.milliseconds()), exchange.id, symbol, 'ask:', orderbook['asks'][0], 'bid:', orderbook['bids'][0])
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,42 @@
+import ccxt.pro
+from asyncio import run, gather
+
+
+print('CCXT Pro version', ccxt.pro.__version__)
+
+
+async def watch_order_book(exchange, symbol):
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            datetime = exchange.iso8601(exchange.milliseconds())
+            print(datetime, orderbook['nonce'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break
+
+
+async def reload_markets(exchange, delay):
+    while True:
+        try:
+            await exchange.sleep(delay)
+            markets = await exchange.load_markets(True)
+            datetime = exchange.iso8601(exchange.milliseconds())
+            print(datetime, 'Markets reloaded')
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break
+
+
+async def main():
+    exchange = ccxt.pro.binance()
+    await exchange.load_markets()
+    # exchange.verbose = True
+    symbol = 'BTC/USDT'
+    delay = 60000  # every minute = 60 seconds = 60000 milliseconds
+    loops = [watch_order_book(exchange, symbol), reload_markets(exchange, delay)]
+    await gather(*loops)
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,73 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import gather, run
+
+
+orderbooks = {}
+
+
+def handle_all_orderbooks(orderbooks):
+    print('We have the following orderbooks:')
+    for id, orderbooks_by_symbol in orderbooks.items():
+        for symbol in orderbooks_by_symbol.keys():
+            orderbook = orderbooks_by_symbol[symbol]
+            print(ccxt.pro.Exchange.iso8601(orderbook['timestamp']), id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+
+
+async def symbol_loop(exchange, id, symbol):
+    print('Starting', id, symbol)
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            orderbooks[id] = orderbooks.get(id, {})
+            orderbooks[id][symbol] = orderbook
+            print('===========================================================')
+            #
+            # here you can do what you want
+            # with the most recent versions of each orderbook you have so far
+            #
+            # you can also wait until all of them are available
+            # by just looking into all the orderbooks and counting them
+            #
+            # we just print them here to keep this example simple
+            #
+            handle_all_orderbooks(orderbooks)
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def exchange_loop(id, config):
+    print('Starting', id)
+    exchange = getattr(ccxt.pro, config['id'])({
+        'options': config['options'],
+    })
+    loops = [symbol_loop(exchange, id, symbol) for symbol in config['symbols']]
+    await gather(*loops)
+    await exchange.close()
+
+
+async def main():
+    configs = {
+        'Exchange A (Binance spot)': {
+            'id': 'binance',
+            'symbols': ['BTC/USDT', 'ETH/BTC','ETH/USDT'],
+            'options': {
+                'defaultType': 'spot',
+            },
+        },
+        'Exchange B (Binance futures)': {
+            'id': 'binance',
+            'symbols': ['BTC/USDT', 'ETH/USDT'],
+            'options': {
+                'defaultType': 'future',
+            },
+        },
+    }
+    loops = [exchange_loop(id, config) for id, config in configs.items()]
+    await gather(*loops)
+
+
+run(main())
@@ -0,0 +1,51 @@
+import ccxt.pro as ccxt
+import asyncio
+
+orderbooks = {}
+
+def when_orderbook_changed(exchange_spot, symbol, orderbook):
+    # this is a common handler function
+    # it is called when any of the orderbook is updated
+    # it has access to both the orderbook that was updated
+    # as well as the rest of the orderbooks
+    # ...................................................................
+    print('-------------------------------------------------------------')
+    print('Last updated:', exchange_spot.iso8601(exchange_spot.milliseconds()))
+    # ...................................................................
+    # print just one orderbook here
+    # print(orderbook['datetime'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+    # ...................................................................
+    # or print all orderbooks that have been already subscribed-to
+    for symbol, orderbook in orderbooks.items():
+        print(orderbook['datetime'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+
+
+async def watch_one_orderbook(exchange_spot, symbol):
+    # a call cost of 1 in the queue of subscriptions
+    # means one subscription per exchange.rateLimit milliseconds
+    your_delay = 1
+    await exchange_spot.throttle(your_delay)
+    while True:
+        try:
+            orderbook = await exchange_spot.watch_order_book(symbol)
+            orderbooks[symbol] = orderbook
+            when_orderbook_changed(exchange_spot, symbol, orderbook)
+        except Exception as e:
+            print(type(e).__name__, str(e))
+
+
+async def watch_some_orderbooks(exchange_spot, symbol_list):
+    loops = [watch_one_orderbook(exchange_spot, symbol) for symbol in symbol_list]
+    # let them run, don't for all tasks cause they execute asynchronously
+    # don't print here
+    await asyncio.gather(*loops)
+
+
+async def main():
+    exchange_spot = ccxt.binance()
+    await exchange_spot.load_markets()
+    await watch_some_orderbooks(exchange_spot, ['ZEN/USDT', 'RUNE/USDT', 'AAVE/USDT', 'SNX/USDT'])
+    await exchange_spot.close()
+
+
+asyncio.run(main())
@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+
+from asyncio import run
+import ccxt.pro as ccxt
+from pprint import pprint
+
+
+# This example will run silent and will return your balance only when the balance is updated.
+
+# 1. launch the example with your keys and keep it running
+# 2. go to the margin trading on the website
+# 3. place a margin order on a spot market
+# 4. see your balance updated in the example
+
+
+async def main():
+    exchange = ccxt.pro.binance({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+        'options': {
+            'defaultType': 'margin',
+        },
+        # comment it out if you don't want debug output
+        # this is for the demo purpose only (to show the communication)
+        'verbose': True,
+    })
+    while True:
+        try:
+            balance = await exchange.watch_balance()
+            # it will print the balance update when the balance changes
+            # if the balance remains unchanged the exchange will not send it
+            pprint(balance)
+        except Exception as e:
+            print('watch_balance() failed')
+            print(e)
+            break
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,43 @@
+import ccxt.pro
+from asyncio import run
+
+print('CCXT Pro version', ccxt.pro.__version__)
+
+
+def table(values):
+    first = values[0]
+    keys = list(first.keys()) if isinstance(first, dict) else range(0, len(first))
+    widths = [max([len(str(v[k])) for v in values]) for k in keys]
+    string = ' | '.join(['{:<' + str(w) + '}' for w in widths])
+    return "\n".join([string.format(*[str(v[k]) for k in keys]) for v in values])
+
+
+async def main():
+    exchange = ccxt.pro.binance({
+        # 'options': {
+        #     'OHLCVLimit': 1000, # how many candles to store in memory by default
+        # },
+    })
+    symbol = 'ETH/USDT'  # or BNB/USDT, etc...
+    timeframe = '1m'  # 5m, 1h, 1d
+    limit = 10  # how many candles to return max
+    method = 'watchOHLCV'
+    if (method in exchange.has) and exchange.has[method]:
+        max_iterations = 100000  # how many times to repeat the loop before exiting
+        for i in range(0, max_iterations):
+            try:
+                ohlcvs = await exchange.watch_ohlcv(symbol, timeframe, None, limit)
+                now = exchange.milliseconds()
+                print('\n===============================================================================')
+                print('Loop iteration:', i, 'current time:', exchange.iso8601(now), symbol, timeframe)
+                print('-------------------------------------------------------------------------------')
+                print(table([[exchange.iso8601(o[0])] + o[1:] for o in ohlcvs]))
+            except Exception as e:
+                print(type(e).__name__, str(e))
+                break
+        await exchange.close()
+    else:
+        print(exchange.id, method, 'is not supported or not implemented yet')
+
+
+run(main())
@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+
+from asyncio import run
+import ccxt.pro as ccxt
+
+
+class MyBinance(ccxt.binance):
+    def handle_order_book_message(self, client, message, orderbook):
+        asks = self.safe_value(message, 'a', [])
+        bids = self.safe_value(message, 'b', [])
+        # printing high-frequency updates is a resource-heavy task
+        # this print statement is here just to demonstrate the work of it
+        # replace it with you logic for processing individual updates
+        print('Updates:', {
+            'asks': asks,
+            'bids': bids,
+        })
+        return super(MyBinance, self).handle_order_book_message(client, message, orderbook);
+
+async def main():
+    exchange = MyBinance()
+    symbol = 'BTC/USDT'
+    print('Watching', exchange.id, symbol)
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            # break  # you can also break just this one loop if it fails
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,63 @@
+import ccxt.pro
+from asyncio import run, gather
+
+
+data = {
+    'orderbook': None,
+    'balance': None,
+}
+
+
+def common_handler(exchange, symbol):
+    market = exchange.market(symbol)
+    base = market['base']
+    quote = market['quote']
+    balance = data['balance']
+    orderbook = data['orderbook']
+    if balance and orderbook:
+        total = balance['total']
+        tip = [ orderbook['asks'][0], orderbook['bids'][0] ]
+        print(exchange.iso8601(exchange.milliseconds()), symbol, 'orderbook:', tip, 'balance:', total)
+
+
+async def watch_order_book(exchange, symbol):
+    while True:
+        try:
+            data['orderbook'] = await exchange.watch_order_book(symbol)
+            common_handler(exchange, symbol)
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break  # break this loop
+
+
+async def watch_balance(exchange, symbol):
+    while True:
+        try:
+            data['balance'] = await exchange.watch_balance()
+            common_handler(exchange, symbol)
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break  # break this loop
+
+
+async def main():
+    exchange = ccxt.pro.binance({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+    })
+    await exchange.load_markets()
+    symbol = 'BTC/USDT'
+    while True:
+        try:
+            loops = [
+                watch_order_book(exchange, symbol),
+                watch_balance(exchange, symbol)
+            ]
+            await gather(*loops)
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,59 @@
+# Python
+import ccxt.pro
+from asyncio import run, gather
+from pprint import pprint
+
+
+async def place_delayed_order(exchange, symbol, amount, price):
+    try:
+        await exchange.sleep(5000)  # wait a bit
+        order = await exchange.create_limit_buy_order(symbol, amount, price)
+        print(exchange.iso8601(exchange.milliseconds()), 'place_delayed_order')
+        pprint(order)
+        print('---------------------------------------------------------------')
+    except Exception as e:
+        # break
+        print(e)
+
+
+async def watch_orders_loop(exchange, symbol):
+    while True:
+        try:
+            orders = await exchange.watch_orders(symbol)
+            print(exchange.iso8601(exchange.milliseconds()), 'watch_orders_loop', len(orders), ' last orders cached')
+            print('---------------------------------------------------------------')
+        except Exception as e:
+            # break
+            print(e)
+
+
+async def watch_balance_loop(exchange):
+    while True:
+        try:
+            balance = await exchange.watch_balance()
+            print(exchange.iso8601(exchange.milliseconds()), 'watch_balance_loop')
+            pprint(balance)
+            print('---------------------------------------------------------------')
+        except Exception as e:
+            # break
+            print(e)
+
+
+async def main():
+    exchange = ccxt.pro.binanceusdm({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+    })
+    symbol = 'BTC/USDT'
+    amount = 0.001
+    price = 11111
+    loops = [
+        watch_orders_loop(exchange, symbol),
+        watch_balance_loop(exchange),
+        place_delayed_order(exchange, symbol, amount, price)
+    ]
+    await gather(*loops)
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,48 @@
+# -*- coding: utf-8 -*-
+
+from asyncio import run, gather
+import os
+import sys
+
+root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.path.append(root + '/python')
+
+import ccxt.pro  # noqa: E402
+
+
+print('CCXT Version:', ccxt.__version__)
+
+
+async def print_balance_continuously(exchange):
+    while True:
+        try:
+            print('-----------------------------------------------------------')
+            await exchange.load_markets()
+            balance = await exchange.watch_balance()
+            print(exchange.iso8601(exchange.milliseconds()), exchange.id)
+            for currency, value in balance['total'].items():
+                print(value, currency)
+        except Exception as e:
+            print('-----------------------------------------------------------')
+            print(exchange.iso8601(exchange.milliseconds()), exchange.id, type(e), e)
+            await exchange.sleep(300000)  # sleep 5 minutes and retry
+
+
+async def main():
+    config = {
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+    }
+    exchange_ids = [
+        'binance',
+        'binanceusdm',
+        'binancecoinm',
+    ]
+    exchanges = [getattr(ccxt.pro, exchange_id)(config) for exchange_id in exchange_ids]
+    printing_loops = [print_balance_continuously(exchange) for exchange in exchanges]
+    await gather(*printing_loops)
+    closing_tasks = [exchange.close() for exchange in exchanges]
+    await gather(*closing_tasks)
+
+
+run(main())
@@ -0,0 +1,41 @@
+import ccxt.pro
+from asyncio import run
+
+
+def table(values):
+    first = values[0]
+    keys = list(first.keys()) if isinstance(first, dict) else range(0, len(first))
+    widths = [max([len(str(v[k])) for v in values]) for k in keys]
+    string = ' | '.join(['{:<' + str(w) + '}' for w in widths])
+    return "\n".join([string.format(*[str(v[k]) for k in keys]) for v in values])
+
+
+async def main():
+    exchange = ccxt.pro.bitmex({
+        # 'options': {
+        #     'OHLCVLimit': 1000, # how many candles to store in memory by default
+        # },
+    })
+    symbol = 'BTC/USD'
+    timeframe = '1m'  # 5m, 1h, 1d
+    limit = 10  # how many candles to return max
+    method = 'watchOHLCV'
+    if (method in exchange.has) and exchange.has[method]:
+        max_iterations = 100  # how many times to repeat the loop before exiting
+        for i in range(0, max_iterations):
+            try:
+                ohlcvs = await exchange.watch_ohlcv(symbol, timeframe, None, limit)
+                now = exchange.milliseconds()
+                print('\n===============================================================================')
+                print('Loop iteration:', i, 'current time:', exchange.iso8601(now), symbol, timeframe)
+                print('-------------------------------------------------------------------------------')
+                print(table([[exchange.iso8601(o[0])] + o[1:] for o in ohlcvs]))
+            except Exception as e:
+                print(type(e).__name__, str(e))
+                break
+        await exchange.close()
+    else:
+        print(exchange.id, method, 'is not supported or not implemented yet')
+
+
+run(main())
@@ -0,0 +1,73 @@
+import ccxt.pro
+from asyncio import run, gather
+
+
+def table(values):
+    first = values[0]
+    keys = list(first.keys()) if isinstance(first, dict) else range(0, len(first))
+    widths = [max([len(str(v[k])) for v in values]) for k in keys]
+    string = ' | '.join(['{:<' + str(w) + '}' for w in widths])
+    return "\n".join([string.format(*[str(v[k]) for k in keys]) for v in values])
+
+
+async def watch_ticker(color, duration, exchange, symbol):
+    method = 'watchTicker'
+    if (method in exchange.has) and exchange.has[method]:
+        start = exchange.milliseconds()
+        i = 1
+        while True:
+            ticker = await exchange.watch_ticker(symbol)
+            now = exchange.milliseconds()
+            # start color code
+            print(color, 'Ticker ========================================================================')
+            print(exchange.iso8601(now), symbol, 'iteration:', i, 'last price:', ticker['last'])
+            print('-------------------------------------------------------------------------------')
+            # pprint.pprint(ticker)  # uncomment for a lengthy complete printout
+            print('\x1b[0m')  # stop color code
+            i += 1
+            if (start + duration) < now:
+                break
+    else:
+        raise Exception(exchange.id + ' ' + method + ' is not supported or not implemented yet')
+
+
+async def watch_ohlcv(color, duration, exchange, symbol, timeframe, limit):
+    method = 'watchOHLCV'
+    if (method in exchange.has) and exchange.has[method]:
+        start = exchange.milliseconds()
+        i = 1
+        while True:
+            ohlcvs = await exchange.watch_ohlcv(symbol, timeframe, None, limit)
+            now = exchange.milliseconds()
+            # start color code
+            print(color, 'OHLCV =========================================================================')
+            print(exchange.iso8601(now), symbol, timeframe, 'iteration:', i)
+            print('-------------------------------------------------------------------------------')
+            print(table([[exchange.iso8601(o[0])] + o[1:] for o in ohlcvs]))
+            print('\x1b[0m')  # stop color code
+            i += 1
+            if (start + duration) < now:
+                break
+    else:
+        raise Exception(exchange.id + ' ' + method + ' is not supported or not implemented yet')
+
+
+# =============================================================================
+
+
+async def main():
+    exchange = ccxt.pro.bitmex()
+    await exchange.load_markets()
+    duration = 1200000  # run 20 minutes = 1200000 milliseconds
+    symbol = 'BTC/USD'
+    limit = 10
+    loops = [
+        watch_ticker('\033[35m', duration, exchange, symbol),              # magenta
+        watch_ohlcv('\x1b[33m', duration, exchange, symbol, '1m', limit),  # yellow
+        watch_ohlcv('\x1b[32m', duration, exchange, symbol, '5m', limit),  # green
+    ]
+    await gather(*loops)
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,23 @@
+import ccxt.pro
+from asyncio import run
+
+
+print('CCXT Pro version', ccxt.pro.__version__)
+
+
+async def main():
+    exchange = ccxt.pro.bitvavo()
+    await exchange.load_markets()
+    exchange.verbose = True
+    symbol = 'BTC/EUR'
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            print(orderbook['nonce'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,53 @@
+# -*- coding: utf-8 -*-
+import asyncio
+import ccxt.pro
+
+
+print('CCXT Version:', ccxt.__version__)
+
+
+async def loop(exchange, symbol, timeframe, complete_candles_only=False):
+    duration_in_seconds = exchange.parse_timeframe(timeframe)
+    duration_in_ms = duration_in_seconds * 1000
+    while True:
+        try:
+            trades = await exchange.watch_trades(symbol)
+            if len(trades) > 0:
+                current_minute = int(exchange.milliseconds() / duration_in_ms)
+                ohlcvc = exchange.build_ohlcvc(trades, timeframe)
+                if complete_candles_only:
+                    ohlcvc = [candle for candle in ohlcvc if int(candle[0] / duration_in_ms) < current_minute]
+                if len(ohlcvc) > 0:
+                    print('-----------------------------------------------------------')
+                    print("Symbol:", symbol, "timeframe:", timeframe)
+                    print(ohlcvc)
+
+        except Exception as e:
+            print(f"{type(e).__name__}: {(str(e))}")
+            # raise type(e)(str(e))  # uncomment to break all loops in case of an error in any one of them
+            # break  # you can also break just this one loop if it fails
+
+
+async def main():
+    # select the exchange
+    exchange = ccxt.pro.binance()
+    if exchange.has['watchTrades']:
+        markets = await exchange.load_markets()
+        # Change this value accordingly
+        timeframe = '1m'
+        limit = 5
+        selected_symbols = list(markets.values())[:limit]
+        # you can also specify the symbols manually
+        # selected_symbols = ['BTC/USDT', 'ETH/USDT']
+
+        # Use this variable to choose if only complete candles
+        # should be considered
+        complete_candles_only = True
+        await asyncio.gather(*[loop(exchange, symbol['symbol'], timeframe, complete_candles_only)
+                               for symbol in selected_symbols])
+        await exchange.close()
+    else:
+        print(exchange.id, 'does not support watchTrades yet')
+
+
+asyncio.run(main())
@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import run
+
+async def main():
+    exchange = ccxt.pro.coinbase()
+    method = 'watchTrades'
+    print('CCXT Pro version', ccxt.pro.__version__)
+    if exchange.has[method]:
+        last_id = ''
+        while True:
+            try:
+                trades = await exchange.watch_trades('BTC/USD')
+                for trade in trades:
+                    if trade['id'] > last_id:
+                        print(exchange.iso8601(exchange.milliseconds()), trade['symbol'], trade['datetime'], trade['price'], trade['amount'])
+                        last_id = trade['id']
+
+            except Exception as e:
+                # stop
+                await exchange.close()
+                raise e
+                # or retry
+                # pass
+    else:
+        raise Exception(exchange.id + ' ' + method + ' is not supported or not implemented yet')
+
+
+run(main())
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import run
+
+async def main():
+    exchange = ccxt.pro.coinbase()
+    method = 'watchTrades'
+    print('CCXT Pro version', ccxt.pro.__version__)
+    if exchange.has[method]:
+        while True:
+            try:
+                trades = await exchange.watch_trades('BTC/USD')
+                num_trades = len(trades)
+                trade = trades[-1]
+                print(exchange.iso8601(exchange.milliseconds()), trade['symbol'], trade['datetime'], trade['price'], trade['amount'], 'stored', num_trades, 'trades in cache')
+            except Exception as e:
+                # stop
+                await exchange.close()
+                raise e
+                # or retry
+                # pass
+    else:
+        raise Exception(exchange.id + ' ' + method + ' is not supported or not implemented yet')
+
+
+run(main())
@@ -0,0 +1,22 @@
+import ccxt.pro
+from asyncio import run
+
+
+async def consume_all_trades(exchange, symbol):
+    await exchange.load_markets()
+    while True:
+        try:
+            trades = await exchange.watch_trades(symbol)
+            print('----------------------------------------------------------------------')
+            print(exchange.iso8601(exchange.milliseconds()), 'received', len(trades), 'new', symbol, 'trades:')
+            for trade in trades:
+                print(exchange.id, symbol, trade['id'], trade['datetime'], trade['amount'], trade['price'])
+            exchange.trades[symbol].clear()
+        except Exception as e:
+            print(type(e).__name__, str(e))
+    await exchange.close()
+
+
+exchange = ccxt.pro.bitmex()
+symbol = 'BTC/USD'
+run(consume_all_trades(exchange, symbol))
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+
+import asyncio
+import ccxt.pro
+
+from datetime import datetime
+
+async def loop(exchange, symbol):
+    since = datetime.utcnow()
+    timestamp = int(since.timestamp() * 1000)
+    while True:
+        trades = await exchange.watch_trades(symbol, since=timestamp)
+        print('--------------------------------------------------------------')
+        print('Received', len(trades), 'after', exchange.iso8601 (timestamp))
+        print('waiting for next update...')
+
+
+async def main():
+    exchange = ccxt.pro.gateio()
+    await loop(exchange, 'BTC/USDT')
+    await exchange.close()
+
+
+if __name__ == '__main__':
+    asyncio.run(main())
@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+
+from asyncio import run
+import ccxt.pro
+from pprint import pprint
+
+
+class MyBinance(ccxt.pro.binance):
+    def handle_ohlcv(self, client, message):
+        # add your handling of the original message here
+        print('intercepted', message)
+        return super(MyBinance, self).handle_ohlcv(client, message)
+
+
+async def main():
+    exchange = MyBinance()
+    symbol = 'BTC/USDT'
+    print('Watching', exchange.id, symbol)
+    while True:
+        try:
+            ohlcv = await exchange.watch_ohlcv(symbol, '1m')
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            # break  # you can also break just this one loop if it fails
+    await exchange.close()
+
+
+if __name__ == "__main__":
+    print('CCXT Version:', ccxt.__version__)
+    run(main())
@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import gather, run
+
+
+async def symbol_loop(exchange, symbol):
+    print('Starting the', exchange.id, 'symbol loop with', symbol)
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            now = exchange.milliseconds()
+            print(exchange.iso8601(now), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+async def main():
+    exchange = ccxt.pro.kucoin({
+        "apiKey": "YOUR_API_KEY",
+        "secret": "YOUR_API_SECRET",
+        "password": "YOUR_API_PASSWORD",
+    })
+    symbols = ['KDA/USDT', 'KDA/BTC', 'BTC/USDT']
+    loops = [symbol_loop(exchange, symbol) for symbol in symbols]
+    await gather(*loops)
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,56 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import gather, run
+
+
+async def symbol_loop(exchange, method, symbol):
+    print('Starting', exchange.id, method, symbol)
+    while True:
+        try:
+            response = await getattr(exchange, method)(symbol)
+            now = exchange.milliseconds()
+            iso8601 = exchange.iso8601(now)
+            if method == 'watchOrderBook':
+                print(iso8601, exchange.id, method, symbol, response['asks'][0], response['bids'][0])
+            elif method == 'watchTicker':
+                print(iso8601, exchange.id, method, symbol, response['high'], response['low'], response['bid'], response['ask'])
+            elif method == 'watchTrades':
+                print(iso8601, exchange.id, method, symbol, len(response), 'trades')
+
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def method_loop(exchange, method, symbols):
+    print('Starting', exchange.id, method, symbols)
+    loops = [symbol_loop(exchange, method, symbol) for symbol in symbols]
+    await gather(*loops)
+
+
+async def exchange_loop(exchange_id, methods):
+    print('Starting', exchange_id, methods)
+    exchange = getattr(ccxt.pro, exchange_id)()
+    loops = [method_loop(exchange, method, symbols) for method, symbols in methods.items()]
+    await gather(*loops)
+    await exchange.close()
+
+
+async def main():
+    exchanges = {
+        'okex': {
+            'watchOrderBook': ['BTC/USDT', 'ETH/BTC', 'ETH/USDT'],
+            'watchTicker': ['BTC/USDT'],
+        },
+        'binance': {
+            'watchOrderBook': ['BTC/USDT', 'ETH/BTC'],
+            'watchTrades': [ 'ETH/BTC' ],
+        },
+    }
+    loops = [exchange_loop(exchange_id, methods) for exchange_id, methods in exchanges.items()]
+    await gather(*loops)
+
+
+run(main())
@@ -0,0 +1,59 @@
+# -*- coding: utf-8 -*-
+
+import asyncio
+import ccxt.pro
+
+
+orderbooks = {}
+
+
+def handle_all_orderbooks(orderbooks):
+    print('We have the following orderbooks:')
+    for exchange_id, orderbooks_by_symbol in orderbooks.items():
+        for symbol in orderbooks_by_symbol.keys():
+            orderbook = orderbooks_by_symbol[symbol]
+            print(ccxt.pro.Exchange.iso8601(orderbook['timestamp']), exchange_id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+
+
+async def symbol_loop(exchange, symbol):
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            orderbooks[exchange.id] = orderbooks.get(exchange.id, {})
+            orderbooks[exchange.id][symbol] = orderbook
+            print('===========================================================')
+            #
+            # here you can do what you want
+            # with the most recent versions of each orderbook you have so far
+            #
+            # you can also wait until all of them are available
+            # by just looking into all the orderbooks and counting them
+            #
+            # we just print them here to keep this example simple
+            #
+            handle_all_orderbooks(orderbooks)
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def exchange_loop(exchange_id, symbols):
+    exchange = getattr(ccxt.pro, exchange_id)()
+    loops = [symbol_loop(exchange, symbol) for symbol in symbols]
+    await asyncio.gather(*loops)
+    await exchange.close()
+
+
+async def main():
+    symbols = ['BTC/USDT', 'ETH/BTC']
+    # symbols = []
+    exchanges = {
+        'okex': symbols + ['ETH/USDT'],
+        'binance': symbols,
+    }
+    loops = [exchange_loop(exchange_id, symbols) for exchange_id, symbols in exchanges.items()]
+    await asyncio.gather(*loops)
+
+
+asyncio.run(main())
@@ -0,0 +1,56 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import run, gather, sleep
+
+
+orderbooks = {}
+
+
+def handle_all_orderbooks(orderbooks):
+    print('We have the following orderbooks:')
+    for exchange_id, orderbooks_by_symbol in orderbooks.items():
+        for symbol in orderbooks_by_symbol.keys():
+            orderbook = orderbooks_by_symbol[symbol]
+            print(ccxt.pro.Exchange.iso8601(orderbook['timestamp']), exchange_id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+
+
+async def handling_loop(orderbooks):
+    delay = 5
+    while True:
+        await sleep(delay)
+        handle_all_orderbooks(orderbooks)
+
+
+async def symbol_loop(exchange, symbol):
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            orderbooks[exchange.id] = orderbooks.get(exchange.id, {})
+            orderbooks[exchange.id][symbol] = orderbook
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def exchange_loop(exchange_id, symbols):
+    exchange = getattr(ccxt.pro, exchange_id)()
+    loops = [symbol_loop(exchange, symbol) for symbol in symbols]
+    await gather(*loops)
+    await exchange.close()
+
+
+async def main():
+    symbols = ['BTC/USDT', 'ETH/BTC']
+    # symbols = []
+    exchanges = {
+        'okex': symbols + ['ETH/USDT'],
+        'binance': symbols,
+    }
+    loops = [exchange_loop(exchange_id, symbols) for exchange_id, symbols in exchanges.items()]
+    loops += [handling_loop(orderbooks)]
+    await gather(*loops)
+
+
+run(main())
@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import gather, run
+
+
+async def symbol_loop(exchange, method, symbol):
+    print('Starting', exchange.id, method, symbol)
+    while True:
+        try:
+            response = await getattr(exchange, method)(symbol)
+            now = exchange.milliseconds()
+            iso8601 = exchange.iso8601(now)
+            if method == 'watchOrderBook':
+                print(iso8601, exchange.id, method, symbol, response['asks'][0], response['bids'][0])
+            elif method == 'watchTicker':
+                print(iso8601, exchange.id, method, symbol, response['high'], response['low'], response['bid'], response['ask'])
+            elif method == 'watchTrades':
+                print(iso8601, exchange.id, method, symbol, len(response), 'trades')
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def symbols_method_loop(exchange, method, symbols):
+    print('Starting', exchange.id, method, symbols)
+    loops = [symbol_loop(exchange, method, symbol) for symbol in symbols]
+    await gather(*loops)
+
+
+async def method_loop(exchange, method):
+    print('Starting', exchange.id, method)
+    while True:
+        try:
+            response = await getattr(exchange, method)()
+            now = exchange.milliseconds()
+            iso8601 = exchange.iso8601(now)
+            print(iso8601, exchange.id, method, response)
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def exchange_loop(exchange_id, methods, config={}):
+    print('Starting', exchange_id, methods)
+    exchange = getattr(ccxt.pro, exchange_id)()
+    for attr, value in config.items():
+        setattr(exchange, attr, value)
+    loops = [symbols_method_loop(exchange, method, symbols) if len(symbols) else method_loop(exchange, method) for method, symbols in methods.items()]
+    await gather(*loops)
+    await exchange.close()
+
+
+async def main():
+    keys = {
+        'okex': {
+            'apiKey': 'YOUR_API_KEY',
+            'secret': 'YOUR_SECRET',
+        },
+        'binance': {
+            'apiKey': 'YOUR_API_KEY',
+            'secret': 'YOUR_SECRET',
+        },
+    }
+    exchanges = {
+        'okex': {
+            'watchOrderBook': ['BTC/USDT', 'ETH/BTC', 'ETH/USDT'],
+            'watchTicker': ['BTC/USDT'],
+            'watchBalance': [],
+        },
+        'binance': {
+            'watchOrderBook': ['BTC/USDT', 'ETH/BTC'],
+            'watchTrades': [ 'ETH/BTC' ],
+            'watchBalance': [],
+        },
+    }
+    loops = [exchange_loop(exchange_id, methods, keys.get(exchange_id, {})) for exchange_id, methods in exchanges.items()]
+    await gather(*loops)
+
+
+run(main())
@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import gather, run
+
+
+async def symbol_loop(exchange, symbol):
+    print('Starting the', exchange.id, 'symbol loop with', symbol)
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            now = exchange.milliseconds()
+            print(exchange.iso8601(now), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+async def exchange_loop(exchange_id, symbols):
+    print('Starting the', exchange_id, 'exchange loop with', symbols)
+    exchange = getattr(ccxt.pro, exchange_id)()
+    loops = [symbol_loop(exchange, symbol) for symbol in symbols]
+    await gather(*loops)
+    await exchange.close()
+
+
+async def main():
+    exchanges = {
+        'okex': ['BTC/USDT', 'ETH/BTC', 'ETH/USDT'],
+        'binance': ['BTC/USDT', 'ETH/BTC'],
+    }
+    loops = [exchange_loop(exchange_id, symbols) for exchange_id, symbols in exchanges.items()]
+    await gather(*loops)
+
+
+run(main())
@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*-
+
+import ccxt.pro
+from asyncio import gather, run
+
+
+async def symbol_loop(exchange, symbol):
+    print('Starting the', exchange.id, 'symbol loop with', symbol)
+    while True:
+        try:
+            trades = await exchange.watch_trades(symbol)
+            now = exchange.milliseconds()
+            print(exchange.iso8601(now), exchange.id, symbol, len(trades), trades[-1]['price'])
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def exchange_loop(exchange_id, symbols):
+    print('Starting the', exchange_id, 'exchange loop with', symbols)
+    exchange = getattr(ccxt.pro, exchange_id)({
+        'newUpdates': True,  # https://github.com/ccxt/ccxt/wiki/ccxt.pro.manual#incremental-data-structures
+    })
+    loops = [symbol_loop(exchange, symbol) for symbol in symbols]
+    await gather(*loops)
+    await exchange.close()
+
+
+async def main():
+    exchanges = {
+        'okex': ['BTC/USDT', 'ETH/BTC', 'ETH/USDT'],
+        'binance': ['BTC/USDT', 'ETH/BTC'],
+    }
+    loops = [exchange_loop(exchange_id, symbols) for exchange_id, symbols in exchanges.items()]
+    await gather(*loops)
+
+
+run(main())
@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+
+import asyncio
+import ccxt.pro
+
+
+async def loop(exchange_id, symbol):
+    exchange = getattr(ccxt.pro, exchange_id)()
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            now = exchange.milliseconds()
+            print(exchange.iso8601(now), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0])
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+    await exchange.close()
+
+
+async def main():
+    symbols = {
+        'kraken': 'BTC/USDT',
+        'binance': 'BTC/USDT',
+        'bitmex': 'XBT_USDT',
+    }
+    await asyncio.gather(*[loop(exchange_id, symbol) for exchange_id, symbol in symbols.items()])
+
+
+asyncio.run(main())
@@ -0,0 +1,34 @@
+import ccxt.pro
+import asyncio
+import time
+
+
+async def watch_book(exchange, ticker):
+    last = None
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(ticker)
+            # TODO add timeout within a minute
+            # TODO add last
+            top_bid = orderbook['bids'][0][0]
+            if last != top_bid:
+                print(f'{int(time.time() * 1000)} top bid for celo on {exchange.name} is {top_bid}')
+            last = top_bid
+        except Exception as e:
+            print(f'{exchange.name} failed {type(e)} {e}')
+
+
+async def main():
+    exchange_ids = ['coinbasepro', 'okcoin', 'bittrex']
+    exchanges = [getattr(ccxt.pro, exchange_id)() for exchange_id in exchange_ids]
+    try:
+        done, pending = await asyncio.wait({watch_book(exchange, 'CELO/USD') for exchange in exchanges}, return_when=asyncio.FIRST_EXCEPTION)
+        for completed in done:
+            # trigger the exception here
+            completed.result()
+    except Exception as e:
+        print(f'closing all exchanges because of exception {type(e)} {e}')
+        await asyncio.gather(*[exchange.close() for exchange in exchanges])
+
+
+asyncio.run(main())
@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+
+from asyncio import run
+import ccxt.pro
+
+
+print('CCXT Pro Version: ', ccxt.pro.__version__)
+
+exchange = ccxt.pro.okex({
+    'apiKey': 'YOUR_API_KEY',
+    'secret': 'YOUR_API_SECRET',
+    'password': 'YOUR_API_PASSWORD',
+    'options': { 'defaultType': 'swap' },
+})
+
+
+async def main():
+    await exchange.load_markets()
+    # exchange.verbose = True  # uncomment for debugging
+
+    # https://github.com/ccxt/ccxt/wiki/Manual#overriding-unified-params
+    # https://www.okex.com/docs/en/#swap-swap---orders
+
+    symbol = 'BTC/USDT:USDT'
+    amount = 1  # how may contracts
+    price = None  # or your limit price
+    side = 'buy'  # or 'sell'
+    future_type = '1'  # 1 open long, 2 open short, 3 close long, 4 close short for futures
+    order_type = '4'  # 0 = limit order, 4 = market order
+
+    try:
+        # open long market price order
+        order = await exchange.create_order(symbol, 'market', side, amount, price, {'type': future_type})
+        # --------------------------------------------------------------------
+        # open long market price order
+        # const order = await exchange.create_order(symbol, type, side, amount, price, {'order_type': order_type})
+        # --------------------------------------------------------------------
+        # close short market price order
+        # const order = await exchange.create_order(symbol, 'market', side, amount, price, {'type': future_type, 'order_type': order_type})
+        # --------------------------------------------------------------------
+        # close short market price order
+        # const order = await exchange.create_order(symbol, '4', side, amount, price, {'order_type': order_type})
+        # ...
+        print(order)
+    except Exception as e:
+        print(type(e).__name__, str(e))
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,35 @@
+# -*- coding: utf-8 -*-
+
+import asyncio
+import ccxt.pro as ccxt
+from pprint import pprint
+
+
+async def main():
+    exchange = ccxt.pro.okex({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+        # okex requires this: https://github.com/ccxt/ccxt/wiki/Manual#authentication
+        'password': 'YOUR_API_PASSWORD',
+        # comment it out if you don't want debug output
+        # this is for the demo purpose only (to show the communication)
+        'verbose': True,
+    })
+    while True:
+        try:
+            balance = await exchange.watch_balance({
+                # okex watch_balance requires a symbol or an instrument_id
+                'symbol': 'BTC/USDT',
+                'type': 'margin',
+            })
+            # it will print the balance update when the balance changes
+            # if the balance remains unchanged the exchange will not send it
+            pprint(balance)
+        except Exception as e:
+            print('watch_balance() failed')
+            print(e)
+            break
+    await exchange.close()
+
+
+asyncio.run(main())
@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+
+import asyncio
+import ccxt.pro as ccxt
+from pprint import pprint
+
+
+async def main():
+    exchange = ccxt.pro.okex({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+        # okex requires this: https://github.com/ccxt/ccxt/wiki/Manual#authentication
+        'password': 'YOUR_API_PASSWORD',
+        'options': {
+            'watchBalance': 'margin',
+        },
+        # comment it out if you don't want debug output
+        # this is for the demo purpose only (to show the communication)
+        'verbose': True,
+    })
+    while True:
+        try:
+            balance = await exchange.watch_balance({
+                # okex watch_balance requires a symbol or an instrument_id
+                'symbol': 'BTC/USDT',
+            })
+            # it will print the balance update when the balance changes
+            # if the balance remains unchanged the exchange will not send it
+            pprint(balance)
+        except Exception as e:
+            print('watch_balance() failed')
+            print(e)
+            break
+    await exchange.close()
+
+
+asyncio.run(main())
@@ -0,0 +1,36 @@
+import ccxt.pro
+from asyncio import run
+
+
+print('CCXT Pro version', ccxt.pro.__version__)
+
+
+async def main():
+    exchange = ccxt.pro.okx({
+        'options': {
+            'watchOrderBook': {
+                'depth': 'bbo-tbt',  # tick-by-tick best bidask
+            },
+        },
+    })
+    markets = await exchange.load_markets()
+    # exchange.verbose = True  # uncomment for debugging purposes if necessary
+    symbol = 'BTC/USDT'
+    while True:
+        try:
+            # -----------------------------------------------------------------
+            # use this:
+            # orderbook = await exchange.watch_order_book(symbol)
+            # print(orderbook['datetime'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+            # -----------------------------------------------------------------
+            # or this:
+            ticker = await exchange.watch_ticker(symbol)
+            print(ticker['datetime'], symbol, [ticker['ask'], ticker['askVolume']], [ticker['bid'], ticker['bidVolume']])
+            # -----------------------------------------------------------------
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,55 @@
+import ccxt.pro
+from asyncio import run, ensure_future
+from pprint import pprint
+
+
+print('CCXT Version:', ccxt.__version__)
+
+
+# on_connected() is called when a client connection is established
+# note that the exchange will reuse the same client connection
+# some exchanges might require two or more public/private connections
+# therefore on_connected() may be called more than once
+
+class MyBinance(ccxt.pro.binance):
+    def on_connected(self, client, message=None):
+        print('Connected to', client.url)
+        ensure_future(create_order(self))
+
+
+async def create_order(exchange):
+    symbol = 'BTC/USDT'
+    type = 'limit'
+    side = 'buy'
+    amount = 123.45  # change for your values
+    price = 54.321  # change for your values
+    params = {}
+    try:
+        order = await exchange.create_order(symbol, type, side, amount, price, params)
+        print('--------------------------------------------------------------')
+        print('create_order():')
+        pprint(order)
+    except Exception as e:
+        print(type(e).__name__, str(e))
+
+
+async def watch_orders(exchange):
+    while True:
+        try:
+            orders = await exchange.watch_orders()
+            print('--------------------------------------------------------------')
+            print('watch_orders():')
+            pprint(orders)
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break
+    await exchange.close()
+
+
+exchange = MyBinance({
+    'apiKey': 'YOUR_API_KEY',
+    'secret': 'YOUR_SECRET',
+})
+
+
+run(watch_orders(exchange))
@@ -0,0 +1,35 @@
+import ccxt.pro
+import asyncio
+
+
+async def watch_order_book(exchange, symbol):
+    while True:
+        orderbook = await exchange.watch_order_book(symbol)
+        print(orderbook['datetime'], symbol, orderbook['asks'][0], orderbook['bids'][0])
+
+
+async def watch_trades(exchange, symbol):
+    while True:
+        trades = await exchange.watch_trades(symbol)
+        last = trades[-1]
+        print(last['datetime'], last['price'], last['amount'])
+
+
+async def main():
+    exchange = ccxt.pro.bitstamp()
+    await exchange.load_markets()
+    symbol = 'BTC/USD'
+    while True:
+        try:
+            loops = [
+                watch_order_book(exchange, symbol),
+                watch_trades(exchange, symbol)
+            ]
+            await asyncio.gather(*loops)
+        except Exception as e:
+            print(type(e).__name__, str(e))
+            break
+    await exchange.close()
+
+
+asyncio.run(main())
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+
+from asyncio import run
+import ccxt.pro
+
+async def loop(exchange, symbol):
+    await exchange.throttle(10)
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            now = exchange.milliseconds()
+            print(exchange.iso8601(now), symbol, orderbook['asks'][0], orderbook['bids'][0])
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            # break  # you can also break just this one loop if it fails
+
+async def main():
+    exchange = ccxt.pro.ftx()
+    symbols = ['BTC/USDT', 'ETH/USDT', 'ETH/BTC']
+    await asyncio.gather(*[loop(exchange, symbol) for symbol in symbols])
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,23 @@
+import ccxt.pro
+from asyncio import run
+from pprint import pprint
+
+print('CCXT Version:', ccxt.__version__)
+
+async def main():
+    exchange = ccxt.pro.phemex({
+        'apiKey': 'YOUR_API_KEY',
+        'secret': 'YOUR_SECRET',
+    })
+    markets = await exchange.load_markets()
+    # exchange.verbose = True  # uncomment for debugging purposes if necessary
+    try:
+        symbol = 'UNI/USDT'
+        response = await exchange.cancel_all_orders(symbol)
+        pprint(response)
+    except Exception as e:
+        print(type(e).__name__, str(e))
+    await exchange.close()
+
+
+run(main())
@@ -0,0 +1,66 @@
+# -*- coding: utf-8 -*-
+ 
+import asyncio
+import sys
+import os
+
+# ------------------------------------------------------------------------------
+
+root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
+sys.path.append(root + '/python')
+
+# ------------------------------------------------------------------------------
+
+import ccxt.pro
+
+print('CCXT Version:', ccxt.pro.__version__)
+
+orderbooks = {}
+
+def handle_all_orderbooks(exchange, orderbooks, spot, future):
+    if spot in orderbooks and future in orderbooks: 
+        spot_order_book = orderbooks[spot]
+        future_order_book = orderbooks[future]
+        timestamp = exchange.milliseconds()
+        spot_lag = abs(timestamp - spot_order_book['timestamp']) if spot_order_book['timestamp'] else 10000
+        future_lag = abs(timestamp - future_order_book['timestamp']) if future_order_book['timestamp'] else 10000
+        if spot_lag >= 10000 or future_lag >= 10000:
+            print('Lag > 10 seconds')
+
+async def symbol_loop(exchange, symbol, spot, future):
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            orderbooks[symbol] = orderbook
+            print(exchange.id, '{:13s}'.format(symbol), orderbook['datetime'], orderbook['asks'][0], orderbook['bids'][0])
+            #
+            # here you can do what you want
+            # with the most recent versions of each orderbook you have so far
+            #
+            # you can also wait until all of them are available
+            # by just looking into all the orderbooks and counting them
+            #
+            # we just print them here to keep this example simple
+            #
+            handle_all_orderbooks(exchange, orderbooks, spot, future)
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def main():
+    spot = 'BTC/USDT'
+    future = 'BTC/USDT:USDT'
+    symbols = [ spot, future ]
+    exchange = ccxt.pro.bitmart()
+    loops = [
+        symbol_loop(exchange, spot, spot, future),
+        symbol_loop(exchange, future, spot, future),
+    ]
+    await asyncio.gather(*loops)
+    await exchange.close()
+
+
+asyncio.run(main())
+
@@ -0,0 +1,35 @@
+# -*- coding: utf-8 -*-
+
+import asyncio
+import ccxt.pro
+
+
+async def loop(exchange, symbol, n):
+    i = 0
+    while True:
+        try:
+            orderbook = await exchange.watch_order_book(symbol)
+            # print every 100th bidask to avoid wasting CPU cycles on printing
+            if not i % 100:
+                # i = how many updates there were in total
+                # n = the number of the pair to count subscriptions
+                now = exchange.milliseconds()
+                print(exchange.iso8601(now), n, symbol, i, orderbook['asks'][0], orderbook['bids'][0])
+            i += 1
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            # break  # you can also break just this one loop if it fails
+
+
+async def main():
+    exchange = ccxt.pro.kraken()
+    await exchange.load_markets()
+    markets = list(exchange.markets.values())
+    symbols = [market['symbol'] for market in markets if not market['darkpool']]
+    await asyncio.gather(*[loop(exchange, symbol, n) for n, symbol in enumerate(symbols)])
+    await exchange.close()
+
+
+
+asyncio.run(main())
@@ -0,0 +1,45 @@
+import asyncio
+import ccxt.pro
+
+
+class MyBinance(ccxt.pro.binance):
+
+    def handle_mini_ticker(self, client, message):
+        market_id = self.safe_string_lower(message, 's')
+        message_hash = market_id + '@miniTicker'
+        client.resolve(message, message_hash)
+
+    def handle_message(self, client, message):
+        handlers = {
+            '24hrMiniTicker': self.handle_mini_ticker,
+            # add other custom handlers here
+        }
+        e = self.safe_string(message, 'e')
+        method = self.safe_value(handlers, e)
+        if method:
+            return method(client, message)
+        else:
+            return super(MyBinance, self).handle_message(client, message)
+
+
+async def main():
+    exchange = MyBinance({
+        'enableRateLimit': False,
+        'options': {
+            'defaultType': 'future'
+        }
+    })
+    await exchange.load_markets()
+    # exchange.verbose = True  # uncomment for debugging purposes
+    market = exchange.market('BTC/USDT')
+    message_hash = market['lowercaseId'] + '@miniTicker'
+    while True:
+        try:
+            print(await exchange.watch_public(message_hash))
+        except Exception as e:
+            print(type(e).__name__, str(e))
+    await exchange.close()
+
+
+if __name__ == '__main__':
+    asyncio.run(main())
@@ -0,0 +1,39 @@
+# -*- coding: utf-8 -*-
+
+from asyncio import run, gather
+import ccxt.pro
+
+
+print('CCXT Version:', ccxt.__version__)
+
+
+async def exchange_loop(exchange_id, symbols):
+    exchange = getattr(ccxt.pro, exchange_id)()
+    markets = await exchange.load_markets()
+    await gather(*[watch_ticker_loop(exchange, symbol) for symbol in symbols])
+    await exchange.close()
+
+
+async def watch_ticker_loop(exchange, symbol):
+    # exchange.verbose = True  # uncomment for debugging purposes if necessary
+    while True:
+        try:
+            ticker = await exchange.watch_ticker(symbol)
+            now = exchange.milliseconds()
+            print(exchange.iso8601(now), exchange.id, symbol, 'bid:', ticker['bid'], 'ask:', ticker['ask'], 'last:', ticker['last'], 'on', ticker['datetime'])
+        except Exception as e:
+            print(str(e))
+            # raise e  # uncomment to break all loops in case of an error in any one of them
+            break  # you can break just this one loop if it fails
+
+
+async def main():
+    exchanges = {
+        'binance': [ 'BTC/USDT', 'ETH/USDT' ],
+        'ftx': [ 'BTC/USD', 'ETH/USD' ],
+    }
+    loops = [exchange_loop(exchange_id, symbols) for exchange_id, symbols in exchanges.items()]
+    await gather(*loops)
+
+
+run(main())
@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -*-
+
+from asyncio import gather, run
+import ccxt.pro
+from pprint import pprint
+
+
+async def watch_ticker_continuously(exchange, symbol):
+    filename = exchange.id + '-' + symbol.replace('/', '-') + '.csv'
+    print('Watching', exchange.id, symbol, filename)
+    keys = ['index', 'exchange', 'symbol', 'timestamp', 'open', 'high', 'low', 'close', 'baseVolume']
+    with open(filename, 'w') as file:
+        file.write(','.join(keys) + "\n")
+    index = 0
+    while True:
+        try:
+            ticker = await exchange.watch_ticker(symbol)
+            values = [str(index), exchange.id] + [str(ticker[key]) for key in keys[2:]]
+            print(*values)
+            with open(filename, 'a') as file:
+                file.write(','.join(values) + "\n")
+            index += 1
+        except Exception as e:
+            print(e)
+
+
+async def watch_tickers_continuously(exchange_id, overrides, symbols):
+    exchange_class = getattr(ccxt.pro, exchange_id)
+    exchange = exchange_class(overrides)
+    coroutines = [watch_ticker_continuously(exchange, symbol) for symbol in symbols]
+    await gather(*coroutines)
+    await exchange.close()
+
+
+async def main():
+    exchanges = {
+        'binance': {'options': {'defaultType': 'future'}},
+        'huobipro': {}
+    }
+    symbols = ['BTC/USDT', 'ETH/USDT', 'LTC/USDT', 'XRP/USDT', 'BCH/USDT']
+    coroutines = [watch_tickers_continuously(exchange_id, exchanges[exchange_id], symbols) for exchange_id in exchanges.keys()]
+    return await gather(*coroutines)
+
+
+run(main())
@@ -0,0 +1,46 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <script>
+
+        document.addEventListener ("DOMContentLoaded", function () {
+
+            alert ('ccxt version ' + ccxt.version);
+
+            const exchange = new ccxt.bittrex ({ 
+				'proxyUrl': 'https://cors-anywhere.herokuapp.com/' 
+			})
+
+            const symbol = 'BTC/USDT'
+
+            exchange.fetchTicker (symbol).then (ticker => {
+
+                const text = [
+                    exchange.id,
+                    symbol,
+                    JSON.stringify (ticker, undefined, '\n\t')
+                ]
+
+                document.getElementById ('content').innerHTML = text.join (' ')
+
+            }).catch (e => {
+
+                const text = [
+                    e.constructor.name,
+                    e.message,
+                ]
+
+                document.getElementById ('content').innerHTML = text.join (' ')
+
+            })
+
+        })
+    </script>
+</head>
+<body>
+<h1>Hello, CCXT!</h1>
+<pre id="content"></pre>
+</body>
+</html>
@@ -0,0 +1,47 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <style type="text/css">
+        #contentA { background-color: #ccccff; }
+        #contentB { background-color: #ffcccc; }
+    </style>
+    <script>'use strict'
+
+        class MyExchange extends ccxt.coinbasepro {
+
+            async fetchTicker (symbol, params = {}) {
+                alert ("I'm about to call the parent method from the overrided class, woohooo!")
+                // just call the parent method and that's it
+                return super.fetchTicker (symbol, params);
+            }
+        }
+
+        document.addEventListener ("DOMContentLoaded", function () {
+
+            const exchange = new MyExchange ()
+
+            const symbol = 'ETH/BTC'
+
+            const showFetchedTicker = function (ticker, elementId) {
+
+                const text = [
+                    exchange.id,
+                    symbol,
+                    JSON.stringify (ticker, undefined, '\n\t')
+                ]
+
+                document.getElementById (elementId).innerHTML = text.join (' ')
+
+            }
+
+            exchange.fetchTicker (symbol).then (ticker => showFetchedTicker (ticker, 'content'))
+        })
+    </script>
+</head>
+<body>
+<h1>Hello, CCXT!</h1>
+<pre id="content"></pre>
+</body>
+</html>
@@ -0,0 +1,52 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <script>
+
+        document.addEventListener ("DOMContentLoaded", function () {
+
+            alert ('ccxt version ' + ccxt.version + ' supporting ');
+
+            const pollTickerContinuously = async function (exchange, symbol) {
+
+                while (true) {
+
+                    try {
+
+                        const ticker = await exchange.fetchTicker (symbol)
+
+                        const text = [
+                            exchange.id,
+                            symbol,
+                            JSON.stringify (ticker, undefined, '\n\t')
+                        ]
+
+                        document.getElementById ('content').innerHTML = text.join (' ');
+
+                    } catch (e) {
+
+                        const text = [
+                            e.constructor.name,
+                            e.message,
+                        ]
+
+                        document.getElementById ('content').innerHTML = text.join (' ');
+
+                    }
+                }
+            }
+
+            const exchange = new ccxt.binance ({ enableRateLimit: true })
+            const symbol = 'ETH/BTC'
+
+            pollTickerContinuously (exchange, symbol)
+        })
+    </script>
+</head>
+<body>
+<h1>Hello, CCXT!</h1>
+<pre id="content"></pre>
+</body>
+</html>
@@ -0,0 +1,49 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <script>
+
+        document.addEventListener ("DOMContentLoaded", async function () {
+
+            alert ('ccxt version ' + ccxt.version);
+
+            const enableRateLimit = true
+            const exchange = new ccxt.poloniex ({ enableRateLimit })
+            const symbol = 'ETH/BTC'
+
+            while (true) {
+
+                let text = []
+
+                try {
+
+                    const ticker = await exchange.fetchTicker (symbol)
+
+                    text = [
+                        exchange.id,
+                        symbol,
+                        JSON.stringify (exchange.omit (ticker, 'info'), undefined, '\t')
+                    ]
+
+                } catch (e) {
+
+                    text = [
+                        e.constructor.name,
+                        e.message,
+                    ]
+                }
+
+                document.getElementById ('content').innerHTML = text.join (' ')
+
+            }
+
+        })
+    </script>
+</head>
+<body>
+<h1>Hello, CCXT!</h1>
+<pre id="content"></pre>
+</body>
+</html>
@@ -0,0 +1,43 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <script>
+
+        document.addEventListener ("DOMContentLoaded", function () {
+
+            alert ('CCXT' + (ccxt.isBrowser ? ' browser' : '') + ' version ' + ccxt.version);
+
+            const exchange = new ccxt.coinbasepro ({ enableRateLimit: true })
+            const symbol = 'ETH/BTC'
+
+            exchange.fetchTicker (symbol).then (ticker => {
+
+                const text = [
+                    exchange.id,
+                    symbol,
+                    JSON.stringify (ticker, undefined, '\n\t')
+                ]
+
+                document.getElementById ('content').innerHTML = text.join (' ')
+
+            }).catch (e => {
+
+                const text = [
+                    e.constructor.name,
+                    e.message,
+                ]
+
+                document.getElementById ('content').innerHTML = text.join (' ')
+
+            })
+
+        })
+    </script>
+</head>
+<body>
+<h1>Hello, CCXT!</h1>
+<pre id="content"></pre>
+</body>
+</html>
@@ -0,0 +1,28 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <script>
+
+        document.addEventListener ("DOMContentLoaded", function () {
+
+            async function main () {
+                const exchange = new ccxt.binance ({
+                    'apiKey': 'YOUR_API_KEY',
+                    'secret': 'YOUR_API_SECRET',
+                    'proxyUrl': 'https://cors-anywhere.herokuapp.com/',
+                })
+                const response = await exchange.fetchBalance ()
+                console.log (response)
+            }
+
+            main ()
+        })
+    </script>
+</head>
+<body>
+<h1>Hello, CCXT!</h1>
+<pre id="content"></pre>
+</body>
+</html>
@@ -0,0 +1,7 @@
+// JavaScript CORS Proxy
+// Save this in a file like cors.js and run with `node cors [port]`
+// It will listen for your requests on the port you pass in command line or port 8080 by default
+const port = (process.argv.length > 2) ? parseInt (process.argv[2]) : 8080 // default
+require ('cors-anywhere').createServer ({
+    setHeaders: { 'origin': 'https://www.bitmex.com' }
+}).listen (port, '0.0.0.0')
@@ -0,0 +1,46 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <script>
+
+        document.addEventListener ("DOMContentLoaded", function () {
+
+            alert ('ccxt version ' + ccxt.version);
+
+            const exchange = new ccxt.bitmex ({
+                'proxyUrl': 'http://127.0.0.1:8080/',
+            })
+
+            const symbol = 'BTC/USDT'
+
+            exchange.fetchTicker (symbol).then (ticker => {
+
+                const text = [
+                    exchange.id,
+                    symbol,
+                    JSON.stringify (ticker, undefined, '\n\t')
+                ]
+
+                document.getElementById ('content').innerHTML = text.join (' ')
+
+            }).catch (e => {
+
+                const text = [
+                    e.constructor.name,
+                    e.message,
+                ]
+
+                document.getElementById ('content').innerHTML = text.join (' ')
+
+            })
+
+        })
+    </script>
+</head>
+<body>
+<h1>Hello, CCXT!</h1>
+<pre id="content"></pre>
+</body>
+</html>
@@ -0,0 +1,61 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+    <title>CCXT Basic example for the browser</title>
+    <script type="text/javascript" src="https://unpkg.com/ccxt"></script>
+    <script type="text/javascript" src="https://unpkg.com/lightweight-charts@3.4.0/dist/lightweight-charts.standalone.production.js"></script>
+    <script>
+
+        document.addEventListener ("DOMContentLoaded", async function () {
+
+            try {
+                const exchange = new ccxt.coinbasepro ({ enableRateLimit: true });
+                const symbol = 'ETH/BTC';
+                const timeframe = '1d';
+                const since = undefined;
+                const limit = 600;
+                const config = {
+                    width: 600,
+                    height: 300,
+                    priceScale: {
+                        position: 'left',
+                        mode: 1,
+                        autoScale: true,
+                        invertScale: false,
+                    },
+                    timeScale: {
+                        fixLeftEdge: true,
+                        lockVisibleTimeRangeOnResize: true,
+                        rightBarStaysOnScroll: true,
+                        visible: true,
+                        timeVisible: true,
+                        secondsVisible: true,
+                    },
+                    crosshair: {
+                        mode: window.LightweightCharts.CrosshairMode.Normal,
+                    },
+                };
+                const chart = window.LightweightCharts.createChart(document.body, config);
+                const candleSeries = chart.addCandlestickSeries();
+                while (true) {
+                    try {
+                        const response = await exchange.fetchOHLCV(symbol, timeframe, since, limit);
+                        const last = response[response.length - 1]
+                        const [ timestamp, open, high, low, close ] = last;
+                        const data = response.map (([ timestamp, open, high, low, close ]) => ({ time: exchange.iso8601 (timestamp), open, high, low, close }));
+                        candleSeries.setData(data);
+                    } catch (e) {
+                        console.log (e.constructor.name, e.message);
+                    }
+                    await exchange.sleep (1000);
+                }
+            } catch (e) {
+                alert (e.constructor.name + ' ' + e.message);
+            }
+
+        })
+    </script>
+</head>
+<body>
+</body>
+</html>
@@ -0,0 +1,97 @@
+<!DOCTYPE html>
+<html>
+    <body>
+        <h2>CCXT running on a Webworker example</h2>
+        <p>This example uses a web worker to continuously call <b>fetchTicker</b> on a user-defined exchange, symbol and interval. Then, the web worker reaches back with the results.</p>
+        <h3>Parameters</h3>
+        <label for="exchange">Exchange:</label>
+        <input type="text" id="exchange" name="exchange" ><br><br>
+        <label for="symbol">Symbol:   </label>
+        <input type="text" id="symbol" name="symbol"><br><br>
+        <label for="interval">Interval (ms):   </label>
+        <input type="text" id="interval" name="interval"><br><br>
+        <button onclick="startWorker()">Start CCXT worker</button>
+        <button onclick="stopWorker()">Stop CCXT worker</button>
+        <h3> Received Results:</h3>
+        <output id="result"></output>
+        <table id="resultsTable" style="left:300px;width:400px; border:1px solid black;" >
+            <thead>
+                <tr>
+                    <th>Symbol</th>
+                    <th>Last Price</th>
+                    <th>Base Volume</th>
+                    <th>Exchange Ts</th>
+                    <th>Local Ts</th>
+                </tr>
+            </thead>
+            <tbody id="tbody">
+            </tbody>
+        </table>
+    </body>
+    <script>
+        // fill in default values
+        document.addEventListener('DOMContentLoaded', function(event) { 
+                document.getElementById('exchange').value = 'coinbasepro';
+                document.getElementById('symbol').value = 'BTC/USDT';
+                document.getElementById('interval').value = '1000';
+        });
+        
+        var ccxtWorker;
+        function startWorker() {
+        
+          if (typeof(Worker) !== "undefined") {
+            // if the worker does not exist yet, creates it
+            if (typeof(ccxtWorker) == "undefined") {
+              ccxtWorker = new Worker("worker.js");
+            }
+        
+            // reads user-defined parameters
+            var exchange = document.getElementById('exchange').value
+            var symbol = document.getElementById('symbol').value
+            var interval = document.getElementById('interval').value
+            
+            // send a message with those values
+            ccxtWorker.postMessage([exchange,symbol, interval]);
+            
+            ccxtWorker.onmessage = function(event) {
+                // every time the ccxtworker posts a message
+                // this handler will be invoked
+                handleReceivedData(event.data)
+            };
+          } else {
+            document.getElementById("result").innerHTML = "Sorry! No Web Worker support.";
+          }
+        }
+        
+        function handleReceivedData(data) {
+          var [symbol, last, baseVolume, timestamp, ourTimestamp] = data;
+          var tableRef = document.getElementById('resultsTable');
+          var tbody = document.getElementById('tbody');
+          row = tbody.insertRow(0);
+        
+          cellSymbol = row.insertCell();
+          cellSymbol.innerHTML = symbol;
+        
+          cellPrice = row.insertCell();
+          cellPrice.innerHTML = last;
+
+          cellPrice = row.insertCell();
+          cellPrice.innerHTML = baseVolume;
+        
+          cellTimestamp = row.insertCell();
+          cellTimestamp.innerHTML = timestamp;
+        
+          cellOurtimestamp = row.insertCell();
+          cellOurtimestamp.innerHTML = ourTimestamp;
+        
+        }
+        
+        function stopWorker() {
+          if (ccxtWorker !== undefined) {
+            ccxtWorker.terminate();
+            ccxtWorker = undefined;
+          }
+        }
+    </script>
+    </body>
+</html>
@@ -0,0 +1,43 @@
+self.importScripts('https://unpkg.com/ccxt@1.79.2/dist/ccxt.browser.js');
+
+console.log("Loaded ccxt version:", self.ccxt.version);
+
+var exchangeInstance = undefined;
+
+// handler of received messages
+self.onmessage = async function handler(msg) {
+  await handleMessageFromMain(msg)
+}
+
+// get messages from the main script
+async function handleMessageFromMain(msg) {
+  console.log(msg.data);
+  var [exchange, symbol, interval] = msg.data;
+  console.log('Worker received:', symbol,exchange, interval)
+  interval = parseInt(interval)
+  await processTicker(symbol, exchange)  
+  // schedule process ticker execution
+  setInterval (async () => {
+    await processTicker(symbol, exchange)  
+  }, interval)
+}
+
+async function processTicker(symbol, exchangeId) {
+  if (exchangeInstance === undefined) {
+    exchangeInstance = new ccxt[exchangeId]
+  }
+  var result = await fetchTicker(symbol)
+  var symbol = result['symbol']
+  var last = result['last']
+  var timestamp = result['timestamp']
+  var baseVolume = result['baseVolume']
+  var ourTimestamp = Date.now()
+  // send the data back to the main script
+  postMessage([symbol, last, baseVolume, timestamp, ourTimestamp]);
+}
+
+async function fetchTicker(symbol){
+  // use ccxt to fetch ticker info
+  var result = await exchangeInstance.fetchTicker(symbol)
+  return result;
+}
@@ -0,0 +1,15 @@
+# CCXT JavaScript Examples
+
+These examples might require the following super-useful high-quality Node.js modules by [xpl](https://github.com/xpl):
+
+- [ansicolor](https://github.com/xpl/ansicolor): A quality JavaScript library for the ANSI color/style management ([ansicolor @ npm](https://npmjs.com/package/ansicolor))
+- [as-table](https://github.com/xpl/as-table): A simple function that prints objects as ASCII tables ([as-table @ npm](https://npmjs.com/package/as-table))
+- [ololog](https://github.com/xpl/ololog): Platform-agnostic logging with blackjack and hookers ([ololog @ npm](https://npmjs.com/package/ololog))
+
+All of the modules above are installed with the ccxt library devDependencies by npm automatically.
+
+To run the ccxt JavaScript examples from any folder type in console:
+
+```shell
+node path/to/example.js # substitute for actual filename here
+```
@@ -0,0 +1,39 @@
+"use strict";
+
+const ccxt      = require ('../../ccxt.js');
+
+// instantiate the exchange
+let exchange = new ccxt.coinbasepro  ({
+    'apiKey': 'XXXXXXXXXXXXXX',
+    'secret': 'YYYYYYYYYYYYYY',
+});
+
+async function checkOrders(){
+    try {
+        // fetch orders
+        let orders = await exchange.fetchOrders ('BTC/USDT');
+        // output the result
+        console.log (exchange.id, 'fetched orders', orders);
+    } catch (e) {
+        if (e instanceof ccxt.DDoSProtection || e.message.includes ('ECONNRESET')) {
+            console.log ('[DDoS Protection] ' + e.message);
+        } else if (e instanceof ccxt.RequestTimeout) {
+            console.log ('[Request Timeout] ' + e.message);
+        } else if (e instanceof ccxt.AuthenticationError) {
+            console.log ('[Authentication Error] ' + e.message);
+        } else if (e instanceof ccxt.ExchangeNotAvailable) {
+            console.log ('[Exchange Not Available Error] ' + e.message);
+        } else if (e instanceof ccxt.ExchangeError) {
+            console.log ('[Exchange Error] ' + e.message);
+        } else if (e instanceof ccxt.NetworkError) {
+            console.log ('[Network Error] ' + e.message);
+        } else {
+            // you can throw it if you want to stop the execution
+            // console.log ('[Exception ' + e.constructor.name + '] ' + e.message);
+            throw e;
+        }
+    }
+}
+
+//  for demonstrational purposes, we use 1000 ms interval
+setInterval(checkOrders, 1000); 
@@ -0,0 +1,54 @@
+
+
+import ccxt from '../../js/ccxt.js';
+
+const aggregateOrderBookSide = function (orderbookSide, precision = undefined) {
+    const result = []
+    const amounts = {}
+    for (let i = 0; i < orderbookSide.length; i++) {
+        const ask = orderbookSide[i]
+        let price = ask[0]
+        if (precision !== undefined) {
+            price = ccxt.decimalToPrecision (price, ccxt.ROUND, precision, ccxt.TICK_SIZE)
+        }
+        amounts[price] = (amounts[price] || 0) + ask[1]
+    }
+    Object.keys (amounts).forEach (price => {
+        result.push ([
+            parseFloat (price),
+            amounts[price]
+        ])
+    })
+    return result
+}
+
+const aggregateOrderBook = function (orderbook, precision = undefined) {
+    let asks = aggregateOrderBookSide(orderbook['asks'], precision)
+    let bids = aggregateOrderBookSide(orderbook['bids'], precision)
+    return {
+        'asks': ccxt.sortBy (asks, 0),
+        'bids': ccxt.sortBy (bids, 0, true),
+        'timestamp': orderbook['timestamp'],
+        'datetime': orderbook['datetime'],
+        'nonce': orderbook['nonce'],
+    };
+}
+
+;(async () => {
+
+    const exchange = new ccxt.coinbasepro()
+
+    await exchange.loadMarkets ()
+
+    // exchange.verbose = true // uncomment for verbose debug output
+
+    // level 2 (default)
+    const orderbook = await exchange.fetchOrderBook('BTC/USD')
+
+    // or level 3
+    // const orderbook = await exchange.fetchOrderBook('BTC/USD', undefined, { 'level': 3 })
+
+    const step = 0.5 // 0.01, 0.1, 0.5, 1.0, 2.5, 5.0, 10.0
+    console.log (aggregateOrderBook (orderbook, step))
+
+})();
@@ -0,0 +1,97 @@
+import ccxt from '../../js/ccxt.js';
+// AUTO-TRANSPILE //
+async function example() {
+    const exchange = new ccxt.apex({
+        'apiKey': 'your api Key',
+        'secret': 'your api secret',
+        'walletAddress': 'your eth address',
+        'options': {
+            'accountId': 'your account id',
+            'passphrase': 'your api passphrase',
+            'seeds': 'your zklink omni seed',
+            'brokerId': '',
+        },
+    });
+    exchange.setSandboxMode (true)
+    const fetchTime = await exchange.fetchTime();
+    console.log(fetchTime);
+    //const transfer = await exchange.transfer('USDT', 1.1);
+    //console.log(transfer);
+    //const transferFromContract = await exchange.transfer('USDT', 1.2, 'contract', 'spot');
+    //console.log(transferFromContract);
+    //const fetchCurrencies = await exchange.fetchCurrencies();
+    //console.log(fetchCurrencies);
+    //const fetchBalance = await exchange.fetchBalance();
+    //console.log(fetchBalance);
+    //const fetchMarkets = await exchange.fetchMarkets();
+    //console.log(fetchMarkets);
+    //const fetchTicker = await exchange.fetchTicker('BTC-USDT');
+    //console.log(fetchTicker);
+    //const fetchTickers = await exchange.fetchTickers();
+    //console.log(fetchTickers);
+    //const fetchTrades = await exchange.fetchTrades('BTC-USDT');
+    //console.log(fetchTrades);
+    //const fetchOHLCV = await exchange.fetchOHLCV('BTC-USDT','1m', undefined, 200);
+    //console.log(fetchOHLCV);
+    //const fechOrderBook = await exchange.fetchOrderBook('BTC-USDT');
+    //console.log(fechOrderBook);
+    //const fetchOpenInterest = await exchange.fetchOpenInterest('BTC-USDT');
+    //console.log(fetchOpenInterest);
+
+    //const fetchTransfers = await exchange.fetchTransfers();
+    //console.log(fetchTransfers);
+    //const fetchTransfer = await exchange.fetchTransfer();
+    //console.log(fetchTransfer);
+
+    //const createOrderRes1 = await exchange.createOrder('BTC-USDT', 'LIMIT', 'SELL', 0.001, 100000, {'reduceOnly':true});
+    //console.log(createOrderRes1);
+    const createOrderRes1 = await exchange.createOrder('BTC-USDT', 'STOP_LIMIT', 'BUY', 0.001, 100000, {'triggerPriceType':'INDEX', 'triggerPrice':'10100'});
+    console.log(createOrderRes1);
+
+    const fetchOpenOrders = await exchange.fetchOpenOrders();
+    console.log(fetchOpenOrders);
+    //const fetchOpenOrder = await exchange.fetchOrder(undefined,undefined,{"clientOrderId":'apexomni-615910568987983964-1741322302826-253839'});
+    //console.log(fetchOpenOrder);
+    //const cancelOrder = await exchange.cancelOrder('685707935650677596');
+    //console.log(cancelOrder);
+    //const cancelOrder1 = await exchange.cancelOrder(undefined,undefined,{"clientOrderId":'apexomni-615910568987983964-1741324574601-908656'});
+    //console.log(cancelOrder1);
+    //const cancelAllOrders = await exchange.cancelAllOrders();
+    //console.log(cancelAllOrders);
+
+    //const setLeverage = await exchange.setLeverage(5,'BTC-USDT');
+    //console.log(setLeverage);
+
+    //const fetchPositions = await exchange.fetchPositions();
+    //console.log(fetchPositions);
+
+    //const fetchOrder = await exchange.fetchOrder('685781264227107164');
+    //console.log(fetchOrder);
+
+    //const fetchOrderTrades = await exchange.fetchOrderTrades('685781264227107164'); //{"clientOrderId":'apexomni-615910568987983964-1741339789276-640091'}
+    //console.log(fetchOrderTrades);
+
+
+    let since = exchange.milliseconds () - 86400000*1; // -1 day from now
+    let allTrades = [];
+    let page = 0;
+    while (since < exchange.milliseconds ()) {
+        const params = {
+            'page': page, // exchange-specific non-unified parameter name
+        }
+        const trades = await exchange.fetchFundingHistory ('BTC-USDT', since, 20, params)
+        if (trades.length) {
+            allTrades = allTrades.concat (trades)
+            page++
+        } else {
+            break
+        }
+    }
+    allTrades = exchange.sortBy(allTrades, 'timestamp');
+
+
+    const createOrderRes = await exchange.createOrder('BTC-USDT', 'LIMIT', 'BUY', 0.001, 70000, {'reduceOnly':true,'postOnly':true});
+    console.log(createOrderRes);
+    console.log('end');
+}
+await example();
@@ -0,0 +1,130 @@
+
+
+import ccxt from '../../js/ccxt.js';
+import asTable from 'as-table';
+import fs from 'fs';
+import ansicolor from 'ansicolor';
+import ololog from 'ololog';
+
+const log = ololog.configure ({ locate: false }), verbose   = process.argv.includes ('--verbose'), keysGlobal = 'keys.json', keysLocal = 'keys.local.json', keysFile = fs.existsSync (keysLocal) ? keysLocal : (fs.existsSync (keysGlobal) ? keysGlobal : false), config = keysFile ? require ('../../' + keysFile) : {};
+
+let printSupportedExchanges = function () {
+    log ('Supported exchanges:', ccxt.exchanges.join (', ').green)
+}
+
+let printUsage = function () {
+    log ('Usage: node', process.argv[1], 'id1'.green, 'id2'.yellow, 'id3'.blue, '...')
+    printSupportedExchanges ()
+}
+
+let printExchangeSymbolsAndMarkets = function (exchange) {
+    log (getExchangeSymbols (exchange))
+    log (getExchangeMarketsTable (exchange))
+}
+
+let getExchangeMarketsTable = (exchange) => {
+    return asTable.configure ({ delimiter: ' | ' }) (Object.values (markets))
+}
+
+let sleep = (ms) => new Promise (resolve => setTimeout (resolve, ms));
+
+let proxies = [
+    '', // no proxy by default
+    'https://crossorigin.me/',
+    'https://cors-anywhere.herokuapp.com/',
+]
+
+;(async function main () {
+
+    if (process.argv.length > 3) {
+
+        let ids = process.argv.slice (2)
+        let exchanges = {}
+
+        log (ids.join (', ').yellow)
+
+        // load all markets from all exchanges
+        for (let id of ids) {
+
+            let settings = config[id] || {}
+
+            // instantiate the exchange by id
+            let exchange = new ccxt[id] (ccxt.extend ({
+                // verbose,
+                // 'proxy': 'https://cors-anywhere.herokuapp.com/',
+            }, settings))
+
+            // save it in a dictionary under its id for future use
+            exchanges[id] = exchange
+
+            // load all markets from the exchange
+            let markets = await exchange.loadMarkets ()
+
+            // basic round-robin proxy scheduler
+            let currentProxy = 0
+            let maxRetries   = proxies.length
+
+            for (let numRetries = 0; numRetries < maxRetries; numRetries++) {
+
+                try { // try to load exchange markets using current proxy
+
+                    exchange.proxy = proxies[currentProxy]
+                    await exchange.loadMarkets ()
+
+                } catch (e) { // rotate proxies in case of connectivity errors, catch all other exceptions
+
+                    // swallow connectivity exceptions only
+                    if (e instanceof ccxt.DDoSProtection || e.message.includes ('ECONNRESET')) {
+                        log.bright.yellow ('[DDoS Protection Error] ' + e.message)
+                    } else if (e instanceof ccxt.RequestTimeout) {
+                        log.bright.yellow ('[Timeout Error] ' + e.message)
+                    } else if (e instanceof ccxt.AuthenticationError) {
+                        log.bright.yellow ('[Authentication Error] ' + e.message)
+                    } else if (e instanceof ccxt.ExchangeNotAvailable) {
+                        log.bright.yellow ('[Exchange Not Available Error] ' + e.message)
+                    } else if (e instanceof ccxt.ExchangeError) {
+                        log.bright.yellow ('[Exchange Error] ' + e.message)
+                    } else {
+                        throw e; // rethrow all other exceptions
+                    }
+
+                    // retry next proxy in round-robin fashion in case of error
+                    currentProxy = ++currentProxy % proxies.length
+                }
+            }
+
+            log (id.green, 'loaded', exchange.symbols.length.toString ().green, 'markets')
+        }
+
+        log ('Loaded all markets'.green)
+
+        // get all unique symbols
+        let uniqueSymbols = ccxt.unique (ccxt.flatten (ids.map (id => exchanges[id].symbols)))
+
+        // filter out symbols that are not present on at least two exchanges
+        let arbitrableSymbols = uniqueSymbols
+            .filter (symbol =>
+                ids.filter (id =>
+                    (exchanges[id].symbols.indexOf (symbol) >= 0)).length > 1)
+            .sort ((id1, id2) => (id1 > id2) ? 1 : ((id2 > id1) ? -1 : 0))
+
+        // print a table of arbitrable symbols
+        let table = arbitrableSymbols.map (symbol => {
+            let row = { symbol }
+            for (let id of ids)
+                if (exchanges[id].symbols.indexOf (symbol) >= 0)
+                    row[id] = id
+            return row
+        })
+
+        log (asTable.configure ({ delimiter: ' | ' }) (table))
+
+    } else {
+
+        printUsage ()
+
+    }
+
+    process.exit ()
+
+}) ()
@@ -0,0 +1,29 @@
+
+
+import ccxt from '../../js/ccxt.js';
+import asciichart from 'asciichart';
+import asTable from 'as-table';
+import ololog from 'ololog'
+import ansicolor from 'ansicolor';
+
+const log = ololog.configure ({ locate: false })
+
+ansicolor.nice
+
+//-----------------------------------------------------------------------------
+
+;(async function main () {
+
+    // experimental, not yet implemented for all exchanges
+    // your contributions are welcome ;)
+
+    const index = 4 // [ timestamp, open, high, low, close, volume ]
+    const ohlcv = await new ccxt.okcoin ().fetchOHLCV ('BTC/USD', '15m')
+    const lastPrice = ohlcv[ohlcv.length - 1][index] // closing price
+    const series = ohlcv.map (x => x[index])         // closing price
+    const bitcoinRate = ('₿ = $' + lastPrice).green
+    const chart = asciichart.plot (series, { height: 15, padding: '            ' })
+    log.yellow ("\n" + chart, bitcoinRate, "\n")
+    process.exit ()
+
+}) ()
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
discountry	0d2aa84b84	feat: 更新 Lighter 适配器的账户快照逻辑，支持市场符号和市场 ID 过滤功能	2025-10-06 19:17:24 +08:00
discountry	d2867ba98c	feat: 更新订单协调器和 GRVT 适配器，添加触发类型支持，优化趋势引擎的损益计算逻辑	2025-10-06 19:06:49 +08:00
discountry	e28240e799	feat: 更新订单协调器和 GRVT 适配器逻辑，添加止损单的 reduceOnly 和 closePosition 参数，修改默认价格触发器为 LAST	2025-10-06 18:44:16 +08:00
discountry	cfd5f4309d	feat: 添加 Paradex 适配器支持，更新环境变量配置和适配器构建逻辑	2025-10-06 18:06:23 +08:00
discountry	ccc3a2bf89	feat: 增强 OffsetMakerEngine 订单处理逻辑，添加快速重价抑制机制以减少重复下单	2025-10-03 16:16:20 +08:00
discountry	f8a87f4557	feat: 优化 Lighter 适配器的订单簿处理逻辑，添加排序和限制深度功能	2025-10-03 16:06:31 +08:00
discountry	263cbd7c21	feat: 增强 Lighter 适配器的账户更新逻辑，支持市场账户的实时更新和合并处理	2025-10-03 15:52:18 +08:00
discountry	d328758074	feat: 添加止损单去抖机制，避免重复提交同价同向止损单	2025-10-03 15:40:17 +08:00
discountry	971a2a6adb	feat: 优化 Lighter 适配器的订单过期逻辑，简化市场订单的即时过期处理	2025-10-03 15:35:45 +08:00
discountry	fcb83bd16b	commit	2025-10-03 15:28:16 +08:00
discountry	d5c4b04746	feat: 更新订单处理逻辑，将价格类型改为字符串以避免精度问题，并添加价格格式化函数	2025-10-03 07:15:21 +08:00
discountry	65aaf26879	feat: 更新 Maker 刷新间隔配置，将间隔时间从 1500ms 修改为 500ms	2025-10-03 06:59:24 +08:00