+ flv_json = None
+ # Douyu API sometimes returns error "Unable to load the requested class: eticket_redis_cache"
+ # Retry with different parameters - same parameters cause same errors
+ for i in range(5):
+ tt = int(time.time() / 60)
+ did = uuid.uuid4().hex.upper()
+
+ # Decompile core.swf in webpage by ffdec "Search SWFs in memory"
+ # core.swf is encrypted originally, but ffdec can dump memory to get the decrypted one
+ # If API changes in the future, just use this way to update
+ sign_content = '{room_id}{did}A12Svb&%1UUmf@hC{tt}'.format(room_id = room_id, did = did, tt = tt)
+ sign = hashlib.md5((sign_content).encode('utf-8')).hexdigest()
+
+ payload = {'cdn': 'ws', 'rate': '0', 'tt': tt, 'did': did, 'sign': sign}
+ flv_data = compat_urllib_parse_urlencode(payload)
+
+ flv_request_url = 'http://www.douyu.com/lapi/live/getPlay/%s' % room_id
+ flv_content = self._download_webpage(flv_request_url, video_id, data=flv_data,
+ headers={'Content-Type': 'application/x-www-form-urlencoded'})
+ try:
+ flv_json = self._parse_json(flv_content, video_id, fatal=False)
+ except ExtractorError:
+ # Wait some time before retrying to get a different time() value
+ self._sleep(1, video_id, msg_template='%(video_id)s: Error occurs. '
+ 'Waiting for %(timeout)s seconds before retrying')
+ continue
+ else:
+ break
+ if flv_json is None:
+ raise ExtractorError('Unable to fetch API result')
+
+ flv = flv_json['data']
+
+ error_code = flv_json.get('error', 0)
+ if error_code is not 0:
+ error_desc = 'Server reported error %i' % error_code
+ if isinstance(flv, (compat_str, compat_basestring)):
+ error_desc += ': ' + flv
+ raise ExtractorError(error_desc, expected=True)