Introduce BufferedResponse filter

examples/app/app.vala

@@ -334,7 +334,7 @@ app.matcher (VSGI.Request.GET, (req) => { return req.uri.get_path () == "/custom
 });
 
 app.get ("filtering", (req, res, next) => {
-	next (req, new BufferedResponse (res));
+	next (req, new VSGI.BufferedResponse (res));
 }).then ((req, res) => {
 	// res is now buffered
 	res.body.write_all ("Hello world!".data, null);

src/vsgi-buffered-response.vala

@@ -0,0 +1,21 @@
+using GLib;
+
+namespace VSGI {
+
+	public class BufferedResponse : ResponseFilter {
+
+		private BufferedOutputStream? buffer = null;
+
+		public override OutputStream body {
+			get {
+				if (this.buffer == null)
+					this.buffer = new BufferedOutputStream (base_response.body);
+				return this.buffer;
+			}
+		}
+
+		public BufferedResponse (Response base_response) {
+			Object (base_response: base_response);
+		}
+	}
+}