public HTTPResponse GetFile(HTTPRequest request)
{
if (this.filePath == null)
{
return(null);
}
var path = request.path.StartsWith("/") ? request.path.Substring(1): request.path;
path = filePath + path;
this.logger(LogLevel.Debug, $"Returning static file...{path}");
CacheEntry entry;
lock (_files)
{
if (_files.ContainsKey(request.path))
{
entry = _files[request.path];
}
else
{
entry = null;
}
}
if (entry != null)
{
if (entry.path != null)
{
var lastMod = File.GetLastWriteTime(path);
if (lastMod != entry.lastModified)
{
entry.Reload();
entry.lastModified = lastMod;
}
}
}
else
{
if (!File.Exists(path))
{
logger(LogLevel.Warning, "Nothing found...");
return(null);
}
entry = new CacheEntry();
entry.lastModified = File.GetLastWriteTime(path);
entry.path = path;
entry.Reload();
lock (_files)
{
_files[request.path] = entry;
}
}
if (request.headers.ContainsKey("If-None-Match"))
{
var hash = request.headers["If-None-Match"];
if (hash.Equals(entry.hash))
{
return(HTTPResponse.NotModified(entry.hash, defaultMaxAge));
}
}
var result = HTTPResponse.FromBytes(entry.bytes);
if (entry.isCompressed)
{
result.headers["Content-Encoding"] = "gzip";
}
result.headers["Content-Type"] = entry.contentType;
result.headers["Content-Description"] = "File Transfer";
var fileName = Path.GetFileName(request.path);
if (entry.isDownload)
{
result.headers["Content-Disposition"] = "attachment; filename=\"" + fileName + "\"";
}
result.headers["Content-Transfer-Encoding"] = "binary";
result.headers["Connection"] = "Keep-Alive";
//result.headers["Expires"] = "0";
result.headers["Cache-Control"] = "max-age=" + defaultMaxAge + ", public";
result.headers["Pragma"] = "public";
result.headers["Last-Modified"] = entry.lastModified.ToString("r");
result.headers["ETag"] = entry.hash;
return(result);
}