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# -*- coding: utf-8 -*- """Base exchange class""" # ----------------------------------------------------------------------------- __version__ = '1.18.15' # ----------------------------------------------------------------------------- from ccxt.base.errors import ExchangeError from ccxt.base.errors import NetworkError from ccxt.base.errors import NotSupported from ccxt.base.errors import AuthenticationError from ccxt.base.errors import DDoSProtection from ccxt.base.errors import RequestTimeout from ccxt.base.errors import ExchangeNotAvailable from ccxt.base.errors import InvalidAddress # ----------------------------------------------------------------------------- from ccxt.base.decimal_to_precision import decimal_to_precision from ccxt.base.decimal_to_precision import DECIMAL_PLACES, TRUNCATE, ROUND # ----------------------------------------------------------------------------- __all__ = [ 'Exchange', ] # ----------------------------------------------------------------------------- # Python 2 & 3 import logging import base64 import calendar import collections import datetime from email.utils import parsedate import functools import gzip import hashlib import hmac import io import json import math from numbers import Number import re from requests import Session from requests.utils import default_user_agent from requests.exceptions import HTTPError, Timeout, TooManyRedirects, RequestException # import socket from ssl import SSLError # import sys import time import uuid import zlib from decimal import Decimal # ----------------------------------------------------------------------------- try: basestring # basestring was removed in python 3.0 except NameError: basestring = str # ----------------------------------------------------------------------------- try: import urllib.parse as _urlencode # Python 3 except ImportError: import urllib as _urlencode # Python 2 # ----------------------------------------------------------------------------- # web3/0x imports try: # from web3.auto import w3 from web3 import Web3, HTTPProvider from web3.utils.encoding import hex_encode_abi_type except ImportError: Web3 = HTTPProvider = None # web3/0x not supported in Python 2 # ----------------------------------------------------------------------------- class Exchange(object): """Base exchange class""" id = None version = None certified = False # rate limiter settings enableRateLimit = False rateLimit = 2000 # milliseconds = seconds * 1000 timeout = 10000 # milliseconds = seconds * 1000 asyncio_loop = None aiohttp_proxy = None aiohttp_trust_env = False session = None # Session () by default logger = None # logging.getLogger(__name__) by default userAgent = None userAgents = { 'chrome': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36', 'chrome39': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36', } verbose = False markets = None symbols = None fees = { 'trading': { 'fee_loaded': False, 'percentage': True, # subclasses should rarely have to redefine this }, 'funding': { 'fee_loaded': False, 'withdraw': {}, 'deposit': {}, }, } ids = None tickers = None api = None parseJsonResponse = True proxy = '' origin = '*' # CORS origin proxies = None hostname = None # in case of inaccessibility of the "main" domain apiKey = '' secret = '' password = '' uid = '' privateKey = '' # a "0x"-prefixed hexstring private key for a wallet walletAddress = '' # the wallet address "0x"-prefixed hexstring twofa = False marketsById = None markets_by_id = None currencies_by_id = None precision = None limits = None exceptions = None httpExceptions = { '422': ExchangeError, '418': DDoSProtection, '429': DDoSProtection, '404': ExchangeNotAvailable, '409': ExchangeNotAvailable, '500': ExchangeNotAvailable, '501': ExchangeNotAvailable, '502': ExchangeNotAvailable, '520': ExchangeNotAvailable, '521': ExchangeNotAvailable, '522': ExchangeNotAvailable, '525': ExchangeNotAvailable, '400': ExchangeNotAvailable, '403': ExchangeNotAvailable, '405': ExchangeNotAvailable, '503': ExchangeNotAvailable, '530': ExchangeNotAvailable, '408': RequestTimeout, '504': RequestTimeout, '401': AuthenticationError, '511': AuthenticationError, } headers = None balance = None orderbooks = None orders = None trades = None transactions = None currencies = None options = None # Python does not allow to define properties in run-time with setattr requiredCredentials = { 'apiKey': True, 'secret': True, 'uid': False, 'login': False, 'password': False, 'twofa': False, # 2-factor authentication (one-time password key) 'privateKey': False, # a "0x"-prefixed hexstring private key for a wallet 'walletAddress': False, # the wallet address "0x"-prefixed hexstring } # API method metainfo has = { 'publicAPI': True, 'privateAPI': True, 'CORS': False, 'cancelOrder': True, 'cancelOrders': False, 'createDepositAddress': False, 'createOrder': True, 'createMarketOrder': True, 'createLimitOrder': True, 'deposit': False, 'editOrder': 'emulated', 'fetchBalance': True, 'fetchClosedOrders': False, 'fetchCurrencies': False, 'fetchDepositAddress': False, 'fetchDeposits': False, 'fetchFundingFees': False, 'fetchL2OrderBook': True, 'fetchMarkets': True, 'fetchMyTrades': False, 'fetchOHLCV': 'emulated', 'fetchOpenOrders': False, 'fetchOrder': False, 'fetchOrderBook': True, 'fetchOrderBooks': False, 'fetchOrders': False, 'fetchTicker': True, 'fetchTickers': False, 'fetchTrades': True, 'fetchTradingFees': False, 'fetchTradingLimits': False, 'fetchTransactions': False, 'fetchWithdrawals': False, 'withdraw': False, } precisionMode = DECIMAL_PLACES minFundingAddressLength = 1 # used in check_address substituteCommonCurrencyCodes = True lastRestRequestTimestamp = 0 lastRestPollTimestamp = 0 restRequestQueue = None restPollerLoopIsRunning = False rateLimitTokens = 16 rateLimitMaxTokens = 16 rateLimitUpdateTime = 0 enableLastHttpResponse = True enableLastJsonResponse = True enableLastResponseHeaders = True last_http_response = None last_json_response = None last_response_headers = None requiresWeb3 = False web3 = None commonCurrencies = { 'XBT': 'BTC', 'BCC': 'BCH', 'DRK': 'DASH', } def __init__(self, config={}): self.precision = dict() if self.precision is None else self.precision self.limits = dict() if self.limits is None else self.limits self.exceptions = dict() if self.exceptions is None else self.exceptions self.headers = dict() if self.headers is None else self.headers self.balance = dict() if self.balance is None else self.balance self.orderbooks = dict() if self.orderbooks is None else self.orderbooks self.orders = dict() if self.orders is None else self.orders self.trades = dict() if self.trades is None else self.trades self.transactions = dict() if self.transactions is None else self.transactions self.currencies = dict() if self.c