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**Before:** ``` WARNING - call_when_running - Failed to listen on 0.0.0.0, continuing because listening on [::] ``` **After:** ``` WARNING - call_when_running - Failed to listen on 0.0.0.0, continuing because listening on [::]. Original exception: CannotListenError: Couldn't listen on 0.0.0.0:8008: [Errno 98] Address already in use. ```
63 lines
2.0 KiB
Python
63 lines
2.0 KiB
Python
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright 2014-2016 OpenMarket Ltd
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# Copyright (C) 2023 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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# Originally licensed under the Apache License, Version 2.0:
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# <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# [This file includes modifications made by New Vector Limited]
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#
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#
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import logging
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import sys
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from typing import Container
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from synapse.util import check_dependencies
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logger = logging.getLogger(__name__)
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try:
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check_dependencies.check_requirements()
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except check_dependencies.DependencyException as e:
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sys.stderr.writelines(
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e.message # noqa: B306, DependencyException.message is a property
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)
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sys.exit(1)
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def check_bind_error(
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e: Exception, address: str, bind_addresses: Container[str]
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) -> None:
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"""
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This method checks an exception occurred while binding on 0.0.0.0.
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If :: is specified in the bind addresses a warning is shown.
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The exception is still raised otherwise.
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Binding on both 0.0.0.0 and :: causes an exception on Linux and macOS
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because :: binds on both IPv4 and IPv6 (as per RFC 3493).
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When binding on 0.0.0.0 after :: this can safely be ignored.
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Args:
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e: Exception that was caught.
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address: Address on which binding was attempted.
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bind_addresses: Addresses on which the service listens.
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"""
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if address == "0.0.0.0" and "::" in bind_addresses:
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logger.warning(
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"Failed to listen on 0.0.0.0, continuing because listening on [::]. Original exception: %s: %s",
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type(e).__name__,
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str(e),
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)
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else:
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raise e
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