void makeResponseFromCache(swFile sf, HttpApplication app) {
string eTag = app.Request.Headers["If-None-Match"];
app.Response.AppendHeader("Etag", sf.eTag);
app.Response.ContentType = DesignNew.Consts.contentTypes[sf.ext];
if (sf.eTag == eTag) { //souhlasi eTag => not modified
app.Response.ClearContent();
app.Response.StatusCode = (int)HttpStatusCode.NotModified;
app.Response.AddHeader("Content-Length", "0");
app.Response.SuppressContent = true;
} else { //nova stranka (a ev. jeji gzip verze)
string acceptEncoding = app.Request.Headers["Accept-Encoding"];
app.Response.StatusCode = (int)HttpStatusCode.OK;
if (!string.IsNullOrEmpty(acceptEncoding) && acceptEncoding.Contains("gzip") && sf.gzipData != null) {
app.Response.AppendHeader("Content-Encoding", "gzip");
app.Response.OutputStream.Write(sf.gzipData, 0, sf.gzipData.Length);
} else {
app.Response.OutputStream.Write(sf.data, 0, sf.data.Length);
}
}
app.Response.End();
}
public static void extractSwFilesToCache() { //soubory z d:\LMCom\rew\WebCode\App_Data\swfiles.zip do cache pri startu aplikace
var zipFn = @"d:\LMCom\rew\WebCommon\swfiles.zip"; // HostingEnvironment.MapPath("~/app_data/swfiles.zip");
var mStr = new MemoryStream();
using (MD5 md5 = MD5.Create())
using (var zipStr = File.OpenRead(zipFn))
using (ZipArchive zip = new ZipArchive(zipStr, ZipArchiveMode.Read)) {
foreach (var f in zip.Entries)
using (var fStr = f.Open()) {
mStr.SetLength(0);
fStr.CopyTo(mStr);
string name = f.FullName.Replace('\\', '/'); bool isGZip = false;
if (name.EndsWith(".gzip")) {
name = name.Substring(0, name.Length - 5);
isGZip = true;
}
swFile actFile;
if (!swFiles.TryGetValue(name, out actFile)) swFiles.Add(name, actFile = new swFile(name));
if (isGZip) actFile.gzipData = mStr.ToArray(); else actFile.setData(mStr.ToArray(), md5);
}
}
}
public static swFile addToCache(string name, string ext, byte[] data) { //index-*.html do cache
lock (swFiles) {
swFile actFile;
if (swFiles.TryGetValue(name, out actFile)) return actFile;
swFiles.Add(name, actFile = new swFile(name) { ext = ext });
using (MD5 md5 = MD5.Create()) actFile.setData(data, md5);
using (var ms = new MemoryStream()) {
using (var gzip = new GZipStream(ms, CompressionMode.Compress)) gzip.Write(data, 0, data.Length);
actFile.gzipData = ms.ToArray();
}
return actFile;
}
}
