TLA  Line data    Source code

       1                 : //
       2                 : // Copyright (c) 2026 Steve Gerbino
       3                 : //
       4                 : // Distributed under the Boost Software License, Version 1.0. (See accompanying
       5                 : // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
       6                 : //
       7                 : // Official repository: https://github.com/cppalliance/corosio
       8                 : //
       9                 : 
      10                 : /** @file native_tcp.hpp
      11                 : 
      12                 :     Inline TCP protocol type using platform-specific constants.
      13                 :     All methods are `constexpr` or trivially inlined, giving zero
      14                 :     overhead compared to hand-written socket creation calls.
      15                 : 
      16                 :     This header includes platform socket headers
      17                 :     (`<sys/socket.h>`, `<netinet/in.h>`, etc.).
      18                 :     For a version that avoids platform includes, use
      19                 :     `<boost/corosio/tcp.hpp>` (`boost::corosio::tcp`).
      20                 : 
      21                 :     Both variants satisfy the same protocol-type interface and work
      22                 :     interchangeably with `tcp_socket::open` / `tcp_acceptor::open`.
      23                 : 
      24                 :     @see boost::corosio::tcp
      25                 : */
      26                 : 
      27                 : #ifndef BOOST_COROSIO_NATIVE_NATIVE_TCP_HPP
      28                 : #define BOOST_COROSIO_NATIVE_NATIVE_TCP_HPP
      29                 : 
      30                 : #ifdef _WIN32
      31                 : #include <winsock2.h>
      32                 : #include <ws2tcpip.h>
      33                 : #else
      34                 : #include <netinet/in.h>
      35                 : #include <sys/socket.h>
      36                 : #endif
      37                 : 
      38                 : namespace boost::corosio {
      39                 : 
      40                 : class tcp_socket;
      41                 : class tcp_acceptor;
      42                 : 
      43                 : } // namespace boost::corosio
      44                 : 
      45                 : namespace boost::corosio {
      46                 : 
      47                 : /** Inline TCP protocol type with platform constants.
      48                 : 
      49                 :     Same shape as @ref boost::corosio::tcp but with inline
      50                 :     `family()`, `type()`, and `protocol()` methods that
      51                 :     resolve to compile-time constants.
      52                 : 
      53                 :     @see boost::corosio::tcp
      54                 : */
      55                 : class native_tcp
      56                 : {
      57                 :     bool v6_;
      58 HIT        7862 :     explicit constexpr native_tcp( bool v6 ) noexcept : v6_( v6 ) {}
      59                 : 
      60                 : public:
      61                 :     /// Construct an IPv4 TCP protocol.
      62            7836 :     static constexpr native_tcp v4() noexcept { return native_tcp( false ); }
      63                 : 
      64                 :     /// Construct an IPv6 TCP protocol.
      65              26 :     static constexpr native_tcp v6() noexcept { return native_tcp( true ); }
      66                 : 
      67                 :     /// Return true if this is IPv6.
      68                 :     constexpr bool is_v6() const noexcept { return v6_; }
      69                 : 
      70                 :     /// Return the address family (AF_INET or AF_INET6).
      71            7862 :     int family() const noexcept
      72                 :     {
      73            7862 :         return v6_ ? AF_INET6 : AF_INET;
      74                 :     }
      75                 : 
      76                 :     /// Return the socket type (SOCK_STREAM).
      77            7862 :     static constexpr int type() noexcept { return SOCK_STREAM; }
      78                 : 
      79                 :     /// Return the IP protocol (IPPROTO_TCP).
      80            7862 :     static constexpr int protocol() noexcept { return IPPROTO_TCP; }
      81                 : 
      82                 :     /// The associated socket type.
      83                 :     using socket = tcp_socket;
      84                 : 
      85                 :     /// The associated acceptor type.
      86                 :     using acceptor = tcp_acceptor;
      87                 : 
      88                 :     friend constexpr bool operator==( native_tcp a, native_tcp b ) noexcept
      89                 :     {
      90                 :         return a.v6_ == b.v6_;
      91                 :     }
      92                 : 
      93                 :     friend constexpr bool operator!=( native_tcp a, native_tcp b ) noexcept
      94                 :     {
      95                 :         return a.v6_ != b.v6_;
      96                 :     }
      97                 : };
      98                 : 
      99                 : } // namespace boost::corosio
     100                 : 
     101                 : #endif // BOOST_COROSIO_NATIVE_NATIVE_TCP_HPP