Fail to access api.binance.com when run over proxy

Hello,

• OS: Ubuntu 16.04 LTS
• Programming Language version: python 3.7.9
• CCXT version: 1.41.66

I tried to run my program over a socks5 proxy (proxychain-ng) from China, but I encountered the following error:

Traceback (most recent call last):
  File ".../.venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 382, in _make_request
    self._validate_conn(conn)
  File ".../.venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 1010, in _validate_conn
    conn.connect()
  File ".../.venv/lib/python3.7/site-packages/urllib3/connection.py", line 421, in connect
    tls_in_tls=tls_in_tls,
  File ".../.venv/lib/python3.7/site-packages/urllib3/util/ssl_.py", line 429, in ssl_wrap_socket
    sock, context, tls_in_tls, server_hostname=server_hostname
  File ".../.venv/lib/python3.7/site-packages/urllib3/util/ssl_.py", line 472, in _ssl_wrap_socket_impl
    return ssl_context.wrap_socket(sock, server_hostname=server_hostname)
  File "/usr/lib/python3.7/ssl.py", line 423, in wrap_socket
    session=session
  File "/usr/lib/python3.7/ssl.py", line 870, in _create
    self.do_handshake()
  File "/usr/lib/python3.7/ssl.py", line 1139, in do_handshake
    self._sslobj.do_handshake()
socket.timeout: _ssl.c:1074: The handshake operation timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File ".../.venv/lib/python3.7/site-packages/requests/adapters.py", line 449, in send
    timeout=timeout
  File ".../.venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 756, in urlopen
    method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
  File ".../.venv/lib/python3.7/site-packages/urllib3/util/retry.py", line 531, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File ".../.venv/lib/python3.7/site-packages/urllib3/packages/six.py", line 735, in reraise
    raise value
  File ".../.venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 706, in urlopen
    chunked=chunked,
  File ".../.venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 385, in _make_request
    self._raise_timeout(err=e, url=url, timeout_value=conn.timeout)
  File ".../.venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 337, in _raise_timeout
    self, url, "Read timed out. (read timeout=%s)" % timeout_value
urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='api.binance.com', port=443): Read timed out. (read timeout=10)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File ".../.venv/lib/python3.7/site-packages/ccxt/base/exchange.py", line 570, in fetch
    verify=self.verify
  File ".../.venv/lib/python3.7/site-packages/requests/sessions.py", line 542, in request
    resp = self.send(prep, **send_kwargs)
  File ".../.venv/lib/python3.7/site-packages/requests/sessions.py", line 655, in send
    r = adapter.send(request, **kwargs)
  File ".../.venv/lib/python3.7/site-packages/requests/adapters.py", line 529, in send
    raise ReadTimeout(e, request=request)
requests.exceptions.ReadTimeout: HTTPSConnectionPool(host='api.binance.com', port=443): Read timed out. (read timeout=10)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "main.py", line 295, in <module>
    main()
  ...
  File ".../.venv/lib/python3.7/site-packages/ccxt/base/exchange.py", line 1355, in load_markets
    markets = self.fetch_markets(params)
  File ".../.venv/lib/python3.7/site-packages/ccxt/binance.py", line 616, in fetch_markets
    response = getattr(self, method)(query)
  File ".../.venv/lib/python3.7/site-packages/ccxt/base/exchange.py", line 466, in inner
    return entry(_self, **inner_kwargs)
  File ".../.venv/lib/python3.7/site-packages/ccxt/binance.py", line 2545, in request
    response = self.fetch2(path, api, method, params, headers, body)
  File ".../.venv/lib/python3.7/site-packages/ccxt/base/exchange.py", line 487, in fetch2
    return self.fetch(request['url'], request['method'], request['headers'], request['body'])
  File ".../.venv/lib/python3.7/site-packages/ccxt/base/exchange.py", line 593, in fetch
    raise RequestTimeout(details) from e
ccxt.base.errors.RequestTimeout: binance GET https://api.binance.com/api/v3/exchangeInfo

I also double checked by running

curl 'https://api.binance.com/api/v3/exchangeInfo'

over the same proxy, and it returned

curl: (51) SSL: certificate subject name (*.secure.facebook.com) does not match target host name 'api.binance.com'

where (*.secure.facebook.com) can sometimes be some other domains.

I am wondering if there is anything I can do to fix it? (p.s. The proxy works fine so far for other tasks.)

Thanks a lot!

[timxzz]

Thanks for the quick reply. I have just updated my openssl version from 1.0.1g to 1.1.1g, but the problem is still there. I guess I will need to look around to find out why. The curl command I ran was prefixed with my proxy command proxychain4 curl ... , so it should have went over the proxy.

[timxzz]

It turns out the problem is in my config of the proxy, I manage to fix it by setting up DNS proxy in proxychain-ng appropriately. Thanks a lot for the help!