170             except OSError as exc:
172                 if exc.errno in (errno.EMFILE, errno.ENFILE,
179                         'exception': exc,
224         except BaseException as exc:
229                     'exception': exc,
384         except BaseException as exc:
385             fut.set_exception(exc)
421         except BaseException as exc:
422             fut.set_exception(exc)
467         except BaseException as exc:
468             fut.set_exception(exc)
510         except BaseException as exc:
511             fut.set_exception(exc)
532         except BaseException as exc:
533             fut.set_exception(exc)
565         except BaseException as exc:
566             fut.set_exception(exc)
697     def _fatal_error(self, exc, message='Fatal error on transport'):  argument
699         if isinstance(exc, OSError):
705                 'exception': exc,
709         self._force_close(exc)
711     def _force_close(self, exc):  argument
721         self._loop.call_soon(self._call_connection_lost, exc)
723     def _call_connection_lost(self, exc):  argument
726                 self._protocol.connection_lost(exc)
815         except BaseException as exc:
817                 exc, 'Fatal error: protocol.get_buffer() call failed.')
826         except BaseException as exc:
827             self._fatal_error(exc, 'Fatal read error on socket transport')
838         except BaseException as exc:
840                 exc, 'Fatal error: protocol.buffer_updated() call failed.')
851         except BaseException as exc:
852             self._fatal_error(exc, 'Fatal read error on socket transport')
863         except BaseException as exc:
865                 exc, 'Fatal error: protocol.data_received() call failed.')
875         except BaseException as exc:
877                 exc, 'Fatal error: protocol.eof_received() call failed.')
913             except BaseException as exc:
914                 self._fatal_error(exc, 'Fatal write error on socket transport')
938         except BaseException as exc:
941             self._fatal_error(exc, 'Fatal write error on socket transport')
943                 self._empty_waiter.set_exception(exc)
967     def _call_connection_lost(self, exc):  argument
968         super()._call_connection_lost(exc)
1012         except OSError as exc:
1013             self._protocol.error_received(exc)
1016         except BaseException as exc:
1017             self._fatal_error(exc, 'Fatal read error on datagram transport')
1050             except OSError as exc:
1051                 self._protocol.error_received(exc)
1055             except BaseException as exc:
1057                     exc, 'Fatal write error on datagram transport')
1075             except OSError as exc:
1076                 self._protocol.error_received(exc)
1080             except BaseException as exc:
1082                     exc, 'Fatal write error on datagram transport')