protected override void OnDoWork(DoWorkEventArgs e)
{
WebServerDelivererArgs args = (WebServerDelivererArgs)e.Argument;
if (String.IsNullOrEmpty(Thread.CurrentThread.Name))
{
Thread.CurrentThread.Name = this.GetType().Name + "_" + args.ID;
}
HttpListenerRequest request = args.Context.Request;
// Obtain a response object.
HttpListenerResponse response = args.Context.Response;
// Construct a default response.
string responsestring = "<HTML><BODY> Welcome to AirScout!</BODY></HTML>";
// check for content delivery request
if (request.RawUrl.ToLower() == "/planes.json")
{
responsestring = DeliverPlanes();
}
else if (request.RawUrl.ToLower().StartsWith("/version.json"))
{
responsestring = DeliverVersion(request.RawUrl);
}
else if (request.RawUrl.ToLower().StartsWith("/settings.json"))
{
responsestring = DeliverSettings(request.RawUrl);
}
else if (request.RawUrl.ToLower().StartsWith("/location.json"))
{
responsestring = DeliverLocation(request.RawUrl);
}
else if (request.RawUrl.ToLower().StartsWith("/qrv.json"))
{
responsestring = DeliverQRV(request.RawUrl);
}
else if (request.RawUrl.ToLower().StartsWith("/elevationpath.json"))
{
responsestring = DeliverElevationPath(request.RawUrl);
}
else if (request.RawUrl.ToLower().StartsWith("/propagationpath.json"))
{
responsestring = DeliverPropagationPath(request.RawUrl);
}
else if (request.RawUrl.ToLower().StartsWith("/nearestplanes.json"))
{
responsestring = DeliverNearestPlanes(request.RawUrl, args.AllPlanes);
}
// copy bytes to buffer
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responsestring);
// Get a response stream and write the response to it.
response.ContentLength64 = buffer.Length;
System.IO.Stream output = response.OutputStream;
output.Write(buffer, 0, buffer.Length);
// Thread.Sleep(1000);
// You must close the output stream.
output.Close();
}
private void bw_Webserver_DoWork(object sender, DoWorkEventArgs e)
{
// name the thread for debugging
if (String.IsNullOrEmpty(Thread.CurrentThread.Name))
{
Thread.CurrentThread.Name = this.GetType().Name;
}
Log.WriteMessage("started.");
// run simple web server
string hosturl = "http://+:" + Properties.Settings.Default.Webserver_Port.ToString() + "/";
string userName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
HttpListener listener = null;
while (!bw_Webserver.CancellationPending)
{
string[] prefixes = new string[1];
prefixes[0] = hosturl;
int id = 0;
try
{
if (!HttpListener.IsSupported)
{
Console.WriteLine("Windows XP SP2 or Server 2003 is required to use the HttpListener class.");
return;
}
// URI prefixes are required,
if (prefixes == null || prefixes.Length == 0)
{
throw new ArgumentException("prefixes");
}
// Create a listener.
listener = new HttpListener();
// Add the prefixes.
foreach (string s in prefixes)
{
listener.Prefixes.Add(s);
}
listener.Start();
Console.WriteLine("Listening...");
while (!bw_Webserver.CancellationPending)
{
// Note: The GetContext method blocks while waiting for a request.
HttpListenerContext context = listener.GetContext();
List <PlaneInfo> allplanes = Planes.GetAll(DateTime.UtcNow, Properties.Settings.Default.Planes_Position_TTL);
id++;
// send response from a background thread
WebServerDelivererArgs args = new WebServerDelivererArgs();
args.ID = id;
args.Context = context;
args.AllPlanes = allplanes;
WebserverDeliver bw = new WebserverDeliver();
bw.RunWorkerAsync(args);
}
}
catch (HttpListenerException ex)
{
if (ex.ErrorCode == 5)
{
// gain additional access rights for that specific host url
// user will be prompted for allow changes
// DO NOT USE THE "listener=yes" option as recommended!!!
string args = "http add urlacl " + hosturl + " user="******"netsh", args);
psi.Verb = "runas";
psi.CreateNoWindow = true;
psi.WindowStyle = ProcessWindowStyle.Hidden;
psi.UseShellExecute = true;
Process.Start(psi).WaitForExit();
}
}
catch (Exception ex)
{
// do almost nothing
// wait 10 seconds and restart the listener
Thread.Sleep(10000);
}
finally
{
}
}
if (listener != null)
{
lock (listener)
{
listener.Stop();
}
}
Log.WriteMessage("Finished.");
}
