New server-framework, full featured server example:

A new server framework is introduced, allowing users to
quickly get off the ground. Example servers are refactored
to use the common framework.

example/server-framework/rfc7231.hpp

@@ -0,0 +1,40 @@
+//
+// Copyright (c) 2013-2017 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)
+//
+
+#ifndef BEAST_EXAMPLE_SERVER_RFC7231_HPP
+#define BEAST_EXAMPLE_SERVER_RFC7231_HPP
+
+#include <beast/core/string.hpp>
+#include <beast/http/message.hpp>
+
+namespace framework {
+namespace rfc7231 {
+
+// This aggregates a collection of algorithms
+// corresponding to specifications in rfc7231:
+//
+// https://tools.ietf.org/html/rfc7231
+//
+
+/** Returns `true` if the message specifies Expect: 100-continue
+
+    @param req The request to check
+
+    @see https://tools.ietf.org/html/rfc7231#section-5.1.1
+*/
+template<class Body, class Fields>
+bool
+is_expect_100_continue(beast::http::request<Body, Fields> const& req)
+{
+    return beast::iequals(
+        req[beast::http::field::expect], "100-continue");
+}
+
+} // rfc7231
+} // framework
+
+#endif