mirror of
https://github.com/matrix-construct/construct
synced 2024-10-31 19:08:59 +01:00
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_NET_CLOSE_H
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namespace ircd::net
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{
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enum class dc;
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struct close_opts extern const close_opts_default;
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using close_callback = std::function<void (std::exception_ptr)>;
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string_view reflect(const dc) noexcept;
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// Callback-based closer.
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void close(socket &, const close_opts &, close_callback);
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void close(socket &, const dc &, close_callback);
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// Future-based closer.
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ctx::future<void> close(socket &, const close_opts & = close_opts_default);
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ctx::future<void> close(socket &, const dc &);
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// Fire-and-forget helper callback for close().
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extern const close_callback close_ignore;
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}
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/// Types of disconnection. SSL_NOTIFY is the recommended type of
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/// disconnection and is usually default. RST is an immediate
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/// alternative which has no asynchronous operations.
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enum class ircd::net::dc
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{
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RST, ///< hardest immediate termination
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FIN, ///< sd graceful shutdown both directions
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FIN_SEND, ///< sd graceful shutdown send side
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FIN_RECV, ///< sd graceful shutdown recv side
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SSL_NOTIFY, ///< SSL close_notify
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};
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/// Close options structure.
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struct ircd::net::close_opts
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{
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static conf::item<milliseconds> default_timeout;
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/// The type of close() to be conducted is specified here.
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net::dc type { dc::SSL_NOTIFY };
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/// The coarse duration allowed for the close() process.
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milliseconds timeout { default_timeout };
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/// If specified, these socket options will be applied when conducting
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/// the disconnect (useful for adding an SO_LINGER time etc).
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const sock_opts *sopts { nullptr };
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/// For portable clean disconnection shutdown(2) might be called prior to
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/// close(2). Setting this option to dc::RST skips the shutdown(2) when
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/// the caller deems it unnecessary. At this time it only affects non-SSL
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/// sockets and in the future we will have io_uring(7) fuse these calls.
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net::dc shutdown { dc::FIN };
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};
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