source: binary-improvements/MapRendering/Web/Handlers/StaticHandler.cs@ 350

using System.IO;
using System.Net;
using AllocsFixes.FileCache;

namespace AllocsFixes.NetConnections.Servers.Web.Handlers {
        public class StaticHandler : PathHandler {
                private readonly AbstractCache cache;
                private readonly string datapath;
                private readonly bool logMissingFiles;
                private readonly string staticPart;

                public StaticHandler (string staticPart, string filePath, AbstractCache cache, bool logMissingFiles,
                        string moduleName = null) : base (moduleName) {
                        this.staticPart = staticPart;
                        datapath = filePath + (filePath [filePath.Length - 1] == '/' ? "" : "/");
                        this.cache = cache;
                        this.logMissingFiles = logMissingFiles;
                }

                public override void HandleRequest (HttpListenerRequest req, HttpListenerResponse resp, WebConnection user,
                        int permissionLevel) {
                        string fn = req.Url.AbsolutePath.Remove (0, staticPart.Length);

                        byte[] content = cache.GetFileContent (datapath + fn);

                        if (content != null) {
                                resp.ContentType = MimeType.GetMimeType (Path.GetExtension (fn));
                                resp.ContentLength64 = content.Length;
                                resp.OutputStream.Write (content, 0, content.Length);
                        } else {
                                resp.StatusCode = (int) HttpStatusCode.NotFound;
                                if (logMissingFiles) {
                                        Log.Out ("Web:Static:FileNotFound: \"" + req.Url.AbsolutePath + "\" @ \"" + datapath + fn + "\"");
                                }
                        }
                }
        }
}