public void ProcessRequest(Request request)
{
string workDir = Directory.GetCurrentDirectory();//aktuelles verzeichnis bestimmen
byte[] responseBody;
if (request.Url.Path == "/")
workDir = Path.Combine(workDir, "index.html");
else
workDir = workDir + request.Url.Path;//vollen Pfad zur angeforderten Datei zusammensetzen. Annahme, dass
//Datei im selben Verzeichnis wie die Exec liegt.
Response resp = new Response(request, request._socket);
if (File.Exists(workDir)) //prüfen ob datei existiert bzw. im angegebenen pfad ist
{
using (var fs = File.OpenRead(workDir))
{
long count = fs.Length;
responseBody = new byte[count];
fs.Read(responseBody, 0, (int)count);
resp.sendResponse(request.HttpVersion, getMIMEType(request.Url.Extension), (int)count, " 200 OK", responseBody);
}
}
else //wenn nicht, error message an den browser senden
{
string errorMessage = "<h2> Error: File not found! </h2>";
resp.sendResponse(request.HttpVersion, "", errorMessage.Length, " 404 NOT FOUND", Encoding.ASCII.GetBytes(errorMessage));
}
}
/// <summary>
/// Handles the given request and routes it to the fitting handler.
/// </summary>
/// <param name="req"></param>
/// <returns></returns>
public Response Handle(Request req)
{
Response res = new Response();
// Checks if the method is implemented (routed)
if (!HandledRoutes.ContainsKey(req.Method))
{
res.Header.StatusCode = "501 Not Implemented";
res.Header.ContentType = "text/plain; encoding=utf-8";
res.Write("501 Not Implemented\n");
return res;
}
List<KeyValuePair<string, Route>> possibleRoutes = HandledRoutes[req.Method];
foreach (KeyValuePair<string, Route> r in possibleRoutes)
{
if (Matches(r.Key, req.Path))
{
try
{
if (r.Value(req, res))
return res;
}
catch (Exception e)
{
res.Header.StatusCode = "500 Internal Server Error";
res.Header.ContentType = "text/plain; encoding=utf-8";
res.ClearContent();
res.Write("500 Internal Server Error\n");
res.Write($"Route {r.Key} threw error: {e.Message}\n");
return res;
}
}
}
return res;
}