Squashed 'src/beast/' changes from 1b9a714..6d5547a

6d5547a Set version to 1.0.0-b34
6fab138 Fix and tidy up CMake build scripts:
ccefa54 Set version to 1.0.0-b33
32afe41 Set internal state correctly when writing frames:
fe3e20b Add write_frames unit test
578dcd0 Add decorator unit test
aaa3733 Use fwrite return value in file_body
df66165 Require Visual Studio 2015 Update 3 or later
b8e5a21 Set version to 1.0.0-b32
ffb1758 Update CMake scripts for finding packages:
b893749 Remove http Writer suspend and resume feature (API Change):
27864fb Add io_service completion invariants tests
eba05a7 Set version to 1.0.0-b31
484bcef Fix badge markdown in README.md
5663bea Add missing dynabuf_readstream member
0d7a551 Tidy up build settings
0fd4030 Move the handler, don't copy it

git-subtree-dir: src/beast
git-subtree-split: 6d5547a32c50ec95832c4779311502555ab0ee1f

examples/http_crawl.cpp

@@ -0,0 +1,62 @@
+//
+// 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)
+//
+
+#include "urls_large_data.hpp"
+
+#include <beast/core/streambuf.hpp>
+#include <beast/http.hpp>
+#include <boost/asio.hpp>
+#include <boost/lexical_cast.hpp>
+#include <iostream>
+
+using namespace beast::http;
+using namespace boost::asio;
+
+template<class String>
+void
+err(beast::error_code const& ec, String const& what)
+{
+    std::cerr << what << ": " << ec.message() << std::endl;
+}
+
+int main(int, char const*[])
+{
+    io_service ios;
+    for(auto const& host : urls_large_data())
+    {
+        try
+        {
+            ip::tcp::resolver r(ios);
+            auto it = r.resolve(
+                ip::tcp::resolver::query{host, "http"});
+            ip::tcp::socket sock(ios);
+            connect(sock, it);
+            auto ep = sock.remote_endpoint();
+            request<empty_body> req;
+            req.method = "GET";
+            req.url = "/";
+            req.version = 11;
+            req.fields.insert("Host", host + std::string(":") +
+                boost::lexical_cast<std::string>(ep.port()));
+            req.fields.insert("User-Agent", "beast/http");
+            prepare(req);
+            write(sock, req);
+            response<string_body> res;
+            streambuf sb;
+            beast::http::read(sock, sb, res);
+            std::cout << res;
+        }
+        catch(beast::system_error const& ec)
+        {
+            std::cerr << host << ": " << ec.what();
+        }
+        catch(...)
+        {
+            std::cerr << host << ": unknown exception" << std::endl;
+        }
+    }
+}