code: def read(self, len=1024, buffer=None):
          
  
          try:
              return self._wrap_socket_library_call(
                  lambda: SSL_read(self._ssl.value, len, buffer), ERR_READ_TIMEOUT)
          except openssl_error() as err:
              if err.ssl_error == SSL_ERROR_SYSCALL and err.result == -1:
                  raise_ssl_error(ERR_PORT_UNREACHABLE, err)
              raise
docs: Read data from connection
  
          Read up to len bytes and return them.
          Arguments:
          len -- maximum number of bytes to read
  
          Return value:
          string containing read bytes