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//
 
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// Copyright (c) 2026 Steve Gerbino
 
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//
 
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
 
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
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//
 
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// Official repository: https://github.com/cppalliance/corosio
 
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//
 
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#ifndef BOOST_COROSIO_DETAIL_TCP_ACCEPTOR_SERVICE_HPP
 
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#define BOOST_COROSIO_DETAIL_TCP_ACCEPTOR_SERVICE_HPP
 
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#include <boost/corosio/detail/config.hpp>
 
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#include <boost/corosio/tcp_acceptor.hpp>
 
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#include <boost/corosio/endpoint.hpp>
 
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#include <boost/capy/ex/execution_context.hpp>
 
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#include <system_error>
 
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namespace boost::corosio::detail {
 
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/** Abstract acceptor service base class.
 
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    Concrete implementations ( epoll_acceptors, select_acceptors, etc. )
 
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    inherit from this class and provide platform-specific acceptor
 
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    operations. The context constructor installs whichever backend
 
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    via `make_service`, and `tcp_acceptor.cpp` retrieves it via
 
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    `use_service<tcp_acceptor_service>()`.
 
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*/
 
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class BOOST_COROSIO_DECL tcp_acceptor_service
 
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    : public capy::execution_context::service
 
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    , public io_object::io_service
 
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{
 
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public:
 
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    /// Identifies this service for `execution_context` lookup.
 
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    using key_type = tcp_acceptor_service;
 
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    /** Create the acceptor socket without binding or listening.
 
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        Creates a socket with dual-stack enabled for IPv6 but does
 
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        not bind or listen. Does not set SO_REUSEADDR.
 
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        @param impl The acceptor implementation to open.
 
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        @param family Address family (e.g. `AF_INET`, `AF_INET6`).
 
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        @param type Socket type (e.g. `SOCK_STREAM`).
 
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        @param protocol Protocol number (e.g. `IPPROTO_TCP`).
 
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        @return Error code on failure, empty on success.
 
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    */
 
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    virtual std::error_code open_acceptor_socket(
 
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        tcp_acceptor::implementation& impl,
 
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        int family,
 
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        int type,
 
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        int protocol) = 0;
 
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    /** Bind an open acceptor to a local endpoint.
 
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        @param impl The acceptor implementation to bind.
 
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        @param ep The local endpoint to bind to.
 
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        @return Error code on failure, empty on success.
 
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    */
 
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    virtual std::error_code
 
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    bind_acceptor(tcp_acceptor::implementation& impl, endpoint ep) = 0;
 
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    /** Start listening for incoming connections.
 
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        Registers the acceptor with the platform reactor after
 
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        calling `::listen()`.
 
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        @param impl The acceptor implementation to listen on.
 
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        @param backlog The maximum length of the pending connection queue.
 
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        @return Error code on failure, empty on success.
 
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    */
 
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    virtual std::error_code
 
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    listen_acceptor(tcp_acceptor::implementation& impl, int backlog) = 0;
 
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protected:
 
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    /// Construct the acceptor service.
 
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    tcp_acceptor_service() = default;
 
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    /// Destroy the acceptor service.
 
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    ~tcp_acceptor_service() override = default;
 
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};
 
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} // namespace boost::corosio::detail
 
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#endif // BOOST_COROSIO_DETAIL_TCP_ACCEPTOR_SERVICE_HPP