public void TestFlushableMemoryPool()
{
Assert.AreEqual(0, FlushableMemoryPool.AllocatedSize);
List <IntPtr> pointers = new List <IntPtr>();
int size = 0;
for (int i = 1; i < 1025; i++)
{
size += i * sizeof(int);
pointers.Add(FlushableMemoryPool.Allocate <int>(i));
}
Assert.AreEqual(size, FlushableMemoryPool.AllocatedSize);
FlushableMemoryPool.AquireOrFlush();
pointers.Clear();
for (int i = 1; i < 1025; i++)
{
pointers.Add(FlushableMemoryPool.Allocate <int>(i));
unsafe
{
*(int *)(pointers.Last()) = i;
}
}
Assert.AreEqual(size, FlushableMemoryPool.AllocatedSize);
for (int i = 0; i < 1024; i++)
{
if (i > 0)
{
Assert.IsTrue((pointers[i - 1] + i * sizeof(int)) == (pointers[i]));
}
unsafe
{
*(int *)(pointers[i]) = i + 1;
}
}
FlushableMemoryPool.Destroy();
}
/// <inheritdoc />
protected override void HandleClient(TcpClient client, NetworkStream networkStream)
{
FlushableMemoryPool.AquireOrFlush();
Stream stream = networkStream;
Encoding enc = Encoding.UTF8;
string lastmsg = null;
CurrentClientRemoteEndpoint = client.Client.RemoteEndPoint.ToString();
if (Certificate != null)
{
try
{
System.Net.Security.SslStream sslStream = new System.Net.Security.SslStream(networkStream, false);
sslStream.AuthenticateAsServer(Certificate, false, EnabledSslProtocols, true);
stream = sslStream;
CurrentThreadStream = stream;
}
catch (ThreadAbortException)
{
try
{
stream.Close();
}
catch { }
return;
}
catch (Exception e)
{
Logger.LogError($"Failed to authenticate. ({e.Message} / Inner Exception: {e.InnerException?.Message})");
// With misconfigured Certificates every request might fail here.
if (BlockInsecureConnections)
{
try
{
stream.Close();
}
catch { }
return;
}
try
{
byte[] response = new HttpResponse(null, Master.GetErrorMsg(
"Error 500: Internal Server Error",
"<p>An Exception occured while trying to authenticate the connection.</p><br><br><div style='font-family:\"Consolas\",monospace;font-size: 13;color:#4C4C4C;'>"
+ GetErrorMsg(e, null, null).Replace("\r\n", "<br>").Replace(" ", " ") + "</div><br>"
+ "</div></p>"))
{
Status = "500 Internal Server Error"
}.GetPackage();
networkStream.Write(response, 0, response.Length);
Logger.LogInformation($"Replied authentication error to client.");
}
catch (Exception ex)
{
Logger.LogInformation($"Failed to reply securely to unauthenticated ssl Connection. ({ex.Message})");
}
try
{
stream.Close();
}
catch { }
return;
}
}
else if (BlockInsecureConnections)
{
Logger.LogCrashAndBurn($"Failed to authenticate. (No Certificate given.) This will fail every single time. Crashing...");
try
{
stream.Close();
}
catch { }
return;
}
byte[] msg;
int bytes = 0;
Stopwatch stopwatch = new Stopwatch();
while (Running)
{
msg = new byte[RequestMaxPacketSize];
try
{
if (stopwatch.IsRunning)
{
stopwatch.Reset();
}
bytes = stream.Read(msg, 0, RequestMaxPacketSize);
stopwatch.Start();
}
catch (ThreadAbortException)
{
break;
}
catch (Exception e)
{
if (Running)
{
if (e.InnerException != null && e.InnerException is SocketException)
{
if (((SocketException)e.InnerException).SocketErrorCode == SocketError.TimedOut)
{
try
{
string remoteEndPoint = client.Client.RemoteEndPoint.ToString();
client.Client.Shutdown(SocketShutdown.Both);
client.Close();
Logger.LogTrace($"The connection to {remoteEndPoint} has been closed ordinarily after the timeout has been reached.", stopwatch);
}
catch { };
break;
}
else
{
string remoteEndPoint = "<unknown remote endpoint>";
try
{
remoteEndPoint = client.Client.RemoteEndPoint.ToString();
client.Client.Shutdown(SocketShutdown.Both);
client.Close();
Logger.LogTrace($"The connection to {remoteEndPoint} has been closed ordinarily after a SocketException occured. ({((SocketException)e.InnerException).SocketErrorCode})", stopwatch);
break;
}
catch { };
Logger.LogTrace($"A SocketException occured with {remoteEndPoint}. ({((SocketException)e.InnerException).SocketErrorCode})", stopwatch);
break;
}
}
Logger.LogError("An exception occured in the client handler: " + e.SafeToString(), stopwatch);
try
{
client.Client.Shutdown(SocketShutdown.Both);
client.Close();
Logger.LogTrace($"The connection to {client.Client.RemoteEndPoint} has been closed ordinarily.", stopwatch);
}
catch { };
}
break;
}
if (bytes == 0)
{
break;
}
try
{
string msg_ = enc.GetString(msg, 0, bytes);
HttpRequest htp = HttpRequest.Constructor(ref msg_, lastmsg, stream);
htp.TcpClient = client;
byte[] buffer;
try
{
if (htp.IsIncompleteRequest)
{
lastmsg = msg_;
}
else if (htp.RequestUrl == "")
{
lastmsg = null;
HttpResponse htp_ = new HttpResponse(null, Master.GetErrorMsg(
"Error 501: Not Implemented",
"<p>The Feature that you were trying to use is not yet implemented.</p>" +
#if DEBUG
"<p>The Package you were sending:<br><div style='font-family:\"Consolas\",monospace;font-size: 13;color:#4C4C4C;'>" +
msg_.Replace("\r\n", "<br>") +
#endif
"</div></p>"))
{
Status = "501 Not Implemented"
};
buffer = htp_.GetPackage();
stream.Write(buffer, 0, buffer.Length);
Logger.LogInformation("Client requested an empty URL. We sent Error 501.", stopwatch);
}
else
{
lastmsg = null;
HttpResponse response = null;
try
{
response = RequestHandler.GetResponse(htp);
if (response == null)
{
goto InvalidResponse;
}
buffer = response.GetPackage();
stream.Write(buffer, 0, buffer.Length);
continue;
}
catch (ThreadAbortException)
{
try
{
stream.Close();
}
catch { }
return;
}
catch (WebSocketManagementOvertakeFlagException)
{
return;
}
catch (Exception e)
{
HttpResponse htp_ = new HttpResponse(null, Master.GetErrorMsg(
"Error 500: Internal Server Error",
"<p>An Exception occured while processing the response.</p><br><br><div style='font-family:\"Consolas\",monospace;font-size: 13;color:#4C4C4C;'>"
+ GetErrorMsg(e, SessionData.CurrentSession, msg_).Replace("\r\n", "<br>").Replace(" ", " ") + "</div><br>"
+ "</div></p>"))
{
Status = "500 Internal Server Error"
};
buffer = htp_.GetPackage();
stream.Write(buffer, 0, buffer.Length);
Logger.LogWarning($"Client requested '{htp.RequestUrl}'. {e.GetType()} thrown.\n" + e.SafeToString(), stopwatch);
ServerHandler.LogMessage($"Client requested '{htp.RequestUrl}'. {e.GetType()} thrown.\n" + e.SafeToString(), stopwatch);
continue;
}
InvalidResponse:
if (htp.RequestUrl.EndsWith("/"))
{
buffer = new HttpResponse(null, Master.GetErrorMsg(
"Error 403: Forbidden",
"<p>The Requested URL cannot be delivered due to insufficient priveleges.</p>" +
#if DEBUG
"<p>The Package you were sending:<br><div style='font-family:\"Consolas\",monospace;font-size: 13;color:#4C4C4C;'>" +
msg_.Replace("\r\n", "<br>") +
#endif
"</div></p>"))
{
Status = "403 Forbidden"
}.GetPackage();
}
else
{
buffer = new HttpResponse(null, Master.GetErrorMsg(
"Error 404: Page Not Found",
"<p>The URL you requested did not match any page or file on the server.</p>" +
#if DEBUG
"<p>The Package you were sending:<br><div style='font-family:\"Consolas\",monospace;font-size: 13;color:#4C4C4C;'>" +
msg_.Replace("\r\n", "<br>") +
#endif
"</div></p>"))
{
Status = "404 File Not Found"
}.GetPackage();
}
stream.Write(buffer, 0, buffer.Length);
Logger.LogInformation("Client requested the URL '" + htp.RequestUrl + "' which couldn't be found on the server. Retrieved Error 403/404.", stopwatch);
}
}
catch (Exception e)
{
Logger.LogError("An error occurred in the client handler: " + e.SafeToString(), stopwatch);
}
}
catch (ThreadAbortException)
{
try
{
stream.Close();
}
catch { }
return;
}
catch (Exception e)
{
Logger.LogError("An error occurred in the client handler: " + e.SafeToString(), stopwatch);
}
}
}