CFNetwork: add cfhttpmessage

Signed-off-by: Simon Rozman <simon@rozman.si>

include/MacStd/CFNetwork.hpp

@@ -0,0 +1,28 @@
+/*
+	SPDX-License-Identifier: MIT
+	Copyright © 2023-2025 Amebis
+*/
+
+#pragma once
+
+#include "CoreFoundation.hpp"
+#include <CFNetwork/CFNetwork.h>
+#include <stdexcept>
+
+namespace macstd {
+	///
+	/// HTTP message object traits
+	///
+	struct cfhttpmessage_traits : public cfobject_traits<CFHTTPMessageRef>
+	{
+		static CFHTTPMessageRef duplicate(CFHTTPMessageRef h)
+		{
+			CFHTTPMessageRef h2 = CFHTTPMessageCreateCopy(kCFAllocatorDefault, h);
+			if (h2 == invalid)
+				throw std::runtime_error("CFHTTPMessageCreateCopy failed");
+			return h2;
+		}
+	};
+
+	using cfhttpmessage = handle<CFHTTPMessageRef, cfhttpmessage_traits>;
+}