Method doExplicitChunkSerialize

test/doc/http_examples.cpp:270–338

    //--------------------------------------------------------------------------

    void
    doExplicitChunkSerialize()
    {
        auto const buf =
            [](string_view s)
            {
                return net::const_buffer{
                    s.data(), s.size()};
            };
        test::stream ts{ioc_}, tr{ioc_};
        ts.connect(tr);
        
        response<empty_body> res{status::ok, 11};
        res.set(field::server, "test");
        res.set(field::trailer, "Content-Digest");
        res.chunked(true);

        error_code ec;
        response_serializer<empty_body> sr{res};
        write_header(ts, sr, ec);

        chunk_extensions exts;

        net::write(ts,
            make_chunk(buf("First")), ec);

        exts.insert("quality", "1.0");
        net::write(ts,
            make_chunk(buf("Hello, world!"), exts), ec);

        exts.clear();
        exts.insert("file", "abc.txt");
        exts.insert("quality", "0.7");
        net::write(ts,
            make_chunk(buf("The Next Chunk"), std::move(exts)), ec);

        exts.clear();
        exts.insert("last");
        net::write(ts,
            make_chunk(buf("Last one"), std::move(exts),
                std::allocator<double>{}), ec);

        fields trailers;
        trailers.set(field::content_digest, "f4a5c16584f03d90");

        net::write(ts,
            make_chunk_last(
                trailers,
                std::allocator<double>{}
                    ), ec);
        BEAST_EXPECT(
            buffers_to_string(tr.buffer().data()) ==
            "HTTP/1.1 200 OK\r\n"
            "Server: test\r\n"
            "Trailer: Content-Digest\r\n"
            "Transfer-Encoding: chunked\r\n"
            "\r\n"
            "5\r\n"