add boost on mac

macx64/include/boost/beast/websocket/option.hpp

@@ -0,0 +1,73 @@
+//
+// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// Official repository: https://github.com/boostorg/beast
+//
+
+#ifndef BOOST_BEAST_WEBSOCKET_OPTION_HPP
+#define BOOST_BEAST_WEBSOCKET_OPTION_HPP
+
+#include <boost/beast/core/detail/config.hpp>
+#include <boost/beast/websocket/rfc6455.hpp>
+#include <boost/beast/core/detail/type_traits.hpp>
+#include <boost/throw_exception.hpp>
+#include <algorithm>
+#include <cstdint>
+#include <functional>
+#include <stdexcept>
+#include <type_traits>
+#include <utility>
+
+namespace boost {
+namespace beast {
+namespace websocket {
+
+/** permessage-deflate extension options.
+
+    These settings control the permessage-deflate extension,
+    which allows messages to be compressed.
+
+    @note Objects of this type are used with
+          @ref beast::websocket::stream::set_option.
+*/
+struct permessage_deflate
+{
+    /// `true` to offer the extension in the server role
+    bool server_enable = false;
+
+    /// `true` to offer the extension in the client role
+    bool client_enable = false;
+
+    /** Maximum server window bits to offer
+
+        @note Due to a bug in ZLib, this value must be greater than 8.
+    */
+    int server_max_window_bits = 15;
+
+    /** Maximum client window bits to offer
+
+        @note Due to a bug in ZLib, this value must be greater than 8.
+    */
+    int client_max_window_bits = 15;
+
+    /// `true` if server_no_context_takeover desired
+    bool server_no_context_takeover = false;
+
+    /// `true` if client_no_context_takeover desired
+    bool client_no_context_takeover = false;
+
+    /// Deflate compression level 0..9
+    int compLevel = 8;
+
+    /// Deflate memory level, 1..9
+    int memLevel = 4;
+};
+
+} // websocket
+} // beast
+} // boost
+
+#endif