public void Service(HttpListenerRequest request, HttpListenerResponse response)
{
Request = request;
Response = response;
try {
if (OnPreService())
{
OnService();
OnPostService();
}
else if (Response.StatusCode == 200)
{
Server.CreateErrorServlet().Service(request, response);
}
} catch (Exception e) {
Server.Log(e);
} finally {
try {
Response.Close();
} catch { }
}
}
protected void Service(string resourceRootUrl, string resourceDir)
{
Response.Headers.Add("Accept-Ranges", "bytes");
if (resourceDir != null)
{
if (EnableCaching)
{
var etag = Request.Headers["If-None-Match"];
if (etag != null && etag.Equals(VersionNonce))
{
Response.StatusCode = 304;
return;
}
}
var url = Request.Url.LocalPath;
if (url.StartsWith(resourceRootUrl))
{
url = UrlRelativeTo(url, resourceRootUrl);
}
var path = Path.GetFullPath(resourceDir + "/" + url);
var ext = Path.GetExtension(path);
if (!File.Exists(path) && Directory.Exists(path))
{
path += "/index.html";
ext = ".html";
}
if (ContentTypes.ContainsKey(ext) && File.Exists(path))
{
Response.ContentType = ContentTypes[ext];
if (EnableCaching)
{
Response.AddHeader("ETag", VersionNonce);
}
int min = 0, max = int.MaxValue;
var usingRange = false;
var rangeHeader = Request.Headers["Range"];
if (rangeHeader != null && rangeHeader.StartsWith("bytes="))
{
rangeHeader = rangeHeader.Substring("bytes=".Length);
var split = rangeHeader.Split('-');
if (split.Length == 2)
{
usingRange = true;
if (split[0].Length > 0)
{
int.TryParse(split[0], out min);
}
if (split[1].Length > 0)
{
int.TryParse(split[1], out max);
}
}
}
if (Request.HttpMethod != "HEAD")
{
Response.KeepAlive = true;
Response.AddHeader("Connection", "keep-alive");
using (var stream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read)) {
min = Math.Max(min, 0);
max = Math.Min(max, (int)stream.Length - 1);
try {
if (usingRange)
{
Response.StatusCode = 206;
Response.Headers.Add("Content-Range", string.Format("bytes {0}-{1}/{2}", min, max, stream.Length));
Response.ContentLength64 = max - min + 1;
stream.Seek(min, SeekOrigin.Begin);
}
CopyTo(stream, Response.OutputStream, max - min + 1);
} catch {
return;
}
}
}
else
{
var info = new FileInfo(path);
min = Math.Max(min, 0);
max = Math.Min(max, (int)info.Length - 1);
Response.ContentLength64 = max - min + 1;
if (usingRange)
{
Response.StatusCode = 206;
Response.Headers.Add("Content-Range",
string.Format("bytes {0}-{1}/{2}", min, max, info.Length));
}
}
return;
}
}
Server.CreateErrorServlet().Service(Request, Response);
}