Eventlet example, use hyper client connect raise openssl error

exception is:

Traceback (most recent call last):
  File "/Users/user/.pyenv/versions/h2server/lib/python3.6/site-packages/eventlet/greenpool.py", line 88, in _spawn_n_impl
    func(*args, **kwargs)
  File "origin_eventlet.py", line 31, in run_forever
    self.sock.sendall(self.conn.data_to_send())
  File "/Users/user/.pyenv/versions/h2server/lib/python3.6/site-packages/eventlet/green/OpenSSL/SSL.py", line 101, in sendall
    tail = self.send(data)
  File "/Users/user/.pyenv/versions/h2server/lib/python3.6/site-packages/eventlet/green/OpenSSL/SSL.py", line 81, in write
    return self.fd.write(data)
  File "/Users/user/.pyenv/versions/h2server/lib/python3.6/site-packages/OpenSSL/SSL.py", line 1256, in send
    self._raise_ssl_error(self._ssl, result)
  File "/Users/user/.pyenv/versions/h2server/lib/python3.6/site-packages/OpenSSL/SSL.py", line 1174, in _raise_ssl_error
    _raise_current_error()
  File "/Users/user/.pyenv/versions/h2server/lib/python3.6/site-packages/OpenSSL/_util.py", line 48, in exception_from_error_queue
    raise exception_type(errors)
OpenSSL.SSL.Error: [('SSL routines', 'ssl3_get_record', 'http request')]

client code:

from hyper import HTTPConnection
c = HTTPConnection('localhost:8090')
first = c.request('GET', '/', headers={'key': 'value'})

origin_eventlet.py run_forever の traceback と hyper HTTPConnection('localhost:8090') の例から始め、次に OpenSSL.SSL.Error を再現します。クライアント接続とレポートに示されている endpoint の設定を比較します。原因を特定し、このエラーなしでリクエストが完了するように例を文書化または修正できれば完了です。