synapse-old/synapse/app/__init__.py

52 lines
1.7 KiB
Python
Raw Normal View History

2014-08-12 08:10:52 -06:00
# -*- coding: utf-8 -*-
2016-01-06 21:26:29 -07:00
# Copyright 2014-2016 OpenMarket Ltd
2014-08-12 08:10:52 -06:00
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
2016-02-02 10:18:50 -07:00
import sys
2018-07-09 00:09:20 -06:00
from synapse import python_dependencies # noqa: E402
2016-02-02 10:18:50 -07:00
sys.dont_write_bytecode = True
logger = logging.getLogger(__name__)
2016-02-02 10:18:50 -07:00
try:
python_dependencies.check_requirements()
except python_dependencies.DependencyException as e:
sys.stderr.writelines(e.message)
2016-02-02 10:18:50 -07:00
sys.exit(1)
def check_bind_error(e, address, bind_addresses):
"""
This method checks an exception occurred while binding on 0.0.0.0.
If :: is specified in the bind addresses a warning is shown.
The exception is still raised otherwise.
Binding on both 0.0.0.0 and :: causes an exception on Linux and macOS
because :: binds on both IPv4 and IPv6 (as per RFC 3493).
When binding on 0.0.0.0 after :: this can safely be ignored.
Args:
e (Exception): Exception that was caught.
address (str): Address on which binding was attempted.
bind_addresses (list): Addresses on which the service listens.
"""
2019-06-20 03:32:02 -06:00
if address == "0.0.0.0" and "::" in bind_addresses:
logger.warning(
"Failed to listen on 0.0.0.0, continuing because listening on [::]"
)
else:
raise e