public static void SendFile(StreamHandler streamHandler, int streamId, string url, string encoding) { FileInfo fi = new FileInfo(url); if (!fi.Exists) { SendNotFound(streamHandler, streamId); return; } List <HeaderField> headers = new List <HeaderField>() { HEADER_OK, new HeaderField { Name = "content-type", Value = Mapping.MimeMap[fi.Extension], Sensitive = false }, }; if (Server.UseGZip && encoding != null && encoding.Contains("gzip")) { fi = ZipStream.Compress(fi); if (fi.Extension.Equals(".gz")) { headers.Add(new HeaderField { Name = "content-encoding", Value = "gzip", Sensitive = false }); } } SendHeader(streamHandler, streamId, headers, true, false); // send file SendFileAsDataFrames(streamHandler, fi, streamId); }