iostream.py 文件源码

def _do_ssl_handshake(self):
        try:
            self._handshake_reading = False
            self._handshake_writing = False
            self.socket.do_handshake()

        except SSL.WantReadError:
            self._handshake_reading = True
            return

        except SSL.WantWriteError:
            self._handshake_writing = True
            return

        except SSL.SysCallError as e:
            err_num = abs(e[0])
            if err_num in (errno.EBADF, errno.ENOTCONN, errno.EPERM):
                return self.close(exc_info=True)

            raise

        except SSL.Error as err:
            try:
                peer = self.socket.getpeername()
            except Exception:
                peer = '(not connected)'
                logger.warning("SSL Error on %s %s: %s",
                               self.socket.fileno(), peer, err)
            return self.close(exc_info=True)

        except AttributeError:
            return self.close(exc_info=True)

        else:
            self._ssl_accepting = False
            verify_mode = self.socket.get_context().get_verify_mode()
            if (verify_mode != SSL.VERIFY_NONE and
                    self._server_hostname is not None):
                try:
                    verify_hostname(self.socket, self._server_hostname)
                except VerificationError as e:
                    logger.warning("Invalid SSL certificate: {0}".format(e))
                    self.close(exc_info=True)
                    return

            self._run_ssl_connect_callback()