. /include/boost/corosio /native /detail /msg_flags.hpp
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  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 + #ifndef BOOST_COROSIO_NATIVE_DETAIL_MSG_FLAGS_HPP
  11 + #define BOOST_COROSIO_NATIVE_DETAIL_MSG_FLAGS_HPP
  12 +
  13 + #include <boost/corosio/detail/platform.hpp>
  14 +
  15 + #if BOOST_COROSIO_POSIX
  16 + #include <sys/socket.h>
  17 + #else
  18 + #ifndef WIN32_LEAN_AND_MEAN
  19 + #define WIN32_LEAN_AND_MEAN
  20 + #endif
  21 + #ifndef NOMINMAX
  22 + #define NOMINMAX
  23 + #endif
  24 + #include <WinSock2.h>
  25 + #endif
  26 +
  27 + namespace boost::corosio::detail {
  28 +
  29 + /// Map portable message_flags int values to native MSG_* constants.
  30 + inline int
HITGNC   31 + 150 to_native_msg_flags(int flags) noexcept
  32 + {
HITGNC   33 + 150 int native = 0;
HITGNC   34 + 150 if (flags & 1) native |= MSG_PEEK;
HITGNC   35 + 150 if (flags & 2) native |= MSG_OOB;
HITGNC   36 + 150 if (flags & 4) native |= MSG_DONTROUTE;
HITGNC   37 + 150 return native;
  38 + }
  39 +
  40 + } // namespace boost::corosio::detail
  41 +
  42 + #endif