34 lines
793 B
C++
34 lines
793 B
C++
namespace seafire::representation
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{
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template<representation::Representation R, typename Handler>
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void
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negotiate(server::request_t& req,
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server::response_t& res,
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Handler&& handler)
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{
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using t = traits::representation_traits<R>;
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if constexpr (t::is_content_negotiable) {
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using protocol::rfc7231::accept_t;
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if (auto opt_accept = get<accept_t>(req); opt_accept) {
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auto const accept = *opt_accept;
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for (auto const& accepted_type : accept) {
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if (R::is_accepted(accepted_type)) {
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handler(accepted_type);
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return;
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}
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}
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res.send(server::common_error_t::not_acceptable);
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return;
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}
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}
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handler(std::nullopt);
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}
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} // namespace seafire::representation
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