Method sign

python/ccxt/bitrue.py:3065–3131

(self, path, api: Any = 'public', method='GET', params={}, headers: dict = None, body: Str = None)

        return self.parse_margin_modification(response, market)

    def sign(self, path, api: Any = 'public', method='GET', params={}, headers: dict = None, body: Str = None):
        type = self.safe_string(api, 0)
        version = self.safe_string(api, 1)
        access = self.safe_string(api, 2)
        url = None
        if (type == 'api' and version == 'kline') or (type == 'open' and path.find('listenKey') >= 0):
            url = self.urls['api'][type]
        else:
            url = self.urls['api'][type] + '/' + version
        url = url + '/' + self.implode_params(path, params)
        params = self.omit(params, self.extract_params(path))
        if access == 'private':
            self.check_required_credentials()
            recvWindow = self.safe_integer(self.options, 'recvWindow', 5000)
            if type == 'spot' or type == 'open':
                query = self.urlencode(self.extend({
                    'timestamp': self.nonce(),
                    'recvWindow': recvWindow,
                }, params))
                signature = self.hmac(self.encode(query), self.encode(self.secret), hashlib.sha256)
                query += '&' + 'signature=' + signature
                headers = {
                    'X-MBX-APIKEY': self.apiKey,
                }
                if (method == 'GET') or (method == 'DELETE'):
                    url += '?' + query
                else:
                    body = query
                    headers['Content-Type'] = 'application/x-www-form-urlencoded'
            else:
                timestamp = str(self.nonce())
                signPath = None
                if type == 'fapi':
                    signPath = '/fapi'
                elif type == 'dapi':
                    signPath = '/dapi'
                signPath = signPath + '/' + version + '/' + path
                signMessage = timestamp + method + signPath
                if method == 'GET':
                    keys = list(params.keys())
                    keysLength = len(keys)
                    if keysLength > 0:
                        signMessage += '?' + self.urlencode(params)
                    signature = self.hmac(self.encode(signMessage), self.encode(self.secret), hashlib.sha256)
                    headers = {
                        'X-CH-APIKEY': self.apiKey,
                        'X-CH-SIGN': signature,
                        'X-CH-TS': timestamp,
                    }
                    url += '?' + self.urlencode(params)
                else:
                    query = self.extend({
                        'recvWindow': recvWindow,
                    }, params)
                    body = self.json(query)
                    signMessage += body
                    signature = self.hmac(self.encode(signMessage), self.encode(self.secret), hashlib.sha256)
                    headers = {