Failed Test PR #366 - Error fetching trading pairs for Polkadex

[rxlxrxsx]

Describe the bug

Getting this error on the terminal after starting the client. Despite the error, the client runs as expected.

2023-08-28 10:55:59,151 - 10468 - hummingbot.core.utils.trading_pair_fetcher - ERROR - An error occurred when fetching trading pairs for polkadex.Please check the logs
Traceback (most recent call last):
  File "/Users/reiniersalazar/hbot-ca-polkadex/hummingbot/core/utils/trading_pair_fetcher.py", line 53, in fetch_all
    self._fetch_pairs_from_connector_setting(connector_setting=conn_setting)
  File "/Users/reiniersalazar/hbot-ca-polkadex/hummingbot/core/utils/trading_pair_fetcher.py", line 38, in _fetch_pairs_from_connector_setting
    connector = connector_setting.non_trading_connector_instance_with_default_configuration()
  File "/Users/reiniersalazar/hbot-ca-polkadex/hummingbot/client/settings.py", line 334, in non_trading_connector_instance_with_default_configuration
    connector = connector_class(**kwargs)
  File "/Users/reiniersalazar/hbot-ca-polkadex/hummingbot/connector/exchange/polkadex/polkadex_exchange.py", line 45, in __init__
    self._data_source = PolkadexDataSource(
  File "/Users/reiniersalazar/hbot-ca-polkadex/hummingbot/connector/exchange/polkadex/polkadex_data_source.py", line 68, in __init__
    self._substrate_interface = self._build_substrate_interface()
  File "/Users/reiniersalazar/hbot-ca-polkadex/hummingbot/connector/exchange/polkadex/polkadex_data_source.py", line 462, in _build_substrate_interface
    substrate_interface = SubstrateInterface(
  File "/Users/reiniersalazar/opt/anaconda3/envs/hummingbot/lib/python3.10/site-packages/substrateinterface/base.py", line 132, in __init__
    self.connect_websocket()
  File "/Users/reiniersalazar/opt/anaconda3/envs/hummingbot/lib/python3.10/site-packages/substrateinterface/base.py", line 177, in connect_websocket
    self.websocket = create_connection(
  File "/Users/reiniersalazar/opt/anaconda3/envs/hummingbot/lib/python3.10/site-packages/websocket/_core.py", line 608, in create_connection
    websock.connect(url, **options)
  File "/Users/reiniersalazar/opt/anaconda3/envs/hummingbot/lib/python3.10/site-packages/websocket/_core.py", line 253, in connect
    self.handshake_response = handshake(self.sock, url, *addrs, **options)
  File "/Users/reiniersalazar/opt/anaconda3/envs/hummingbot/lib/python3.10/site-packages/websocket/_handshake.py", line 57, in handshake
    status, resp = _get_resp_headers(sock)
  File "/Users/reiniersalazar/opt/anaconda3/envs/hummingbot/lib/python3.10/site-packages/websocket/_handshake.py", line 150, in _get_resp_headers
    raise WebSocketBadStatusException("Handshake status {status} {message} -+-+- {headers} -+-+- {body}".format(status=status, message=status_message, headers=resp_headers, body=response_body), status, status_message, resp_headers, response_body)
websocket._exceptions.WebSocketBadStatusException: Handshake status 429 Too Many Requests -+-+- {'content-type': 'text/plain', 'content-length': '45', 'date': 'Mon, 28 Aug 2023 16:55:58 GMT'} -+-+- b'Too many connections. Please try again later.'

Steps to reproduce

1. Clone and install the branch
2. Run the client
3. After client start up, observe that the error appears in the terminal

Release version

1.19.0

Type of installation

Source

Attach required files

N/A

[petioptrv]

Polkadex has provided a new url, and I have updated the code. Please re-test. It should prevent the issue observed here.

[rxlxrxsx]

Tested on commit b092456 and confirmed fixed.