RemoteView/Program.cs

using System;
using System.IO;
using System.Net;
using System.Threading;
using System.Windows.Forms;

namespace RemoteView {
    class Program {
        static Mutex mutex = new Mutex (true, "-RemoteView-Mutex-");

        private static string ApplicationName {
            get {
                return Path.GetFileNameWithoutExtension (Application.ExecutablePath);
            }
        }

        /// <summary>
        /// Main method. Needs STAThreadAttribute as this App references System.Windows.Forms
        /// </summary>
        /// <param name="args"></param>
        [STAThreadAttribute]
        static void Main (string[] args) {

            // get configuration from command line parameters

            Configuration conf;
            try {
                conf = Configuration.create (args);
            } catch (Exception e) {
                Console.WriteLine (e.Message);
                return;
            }

            if (conf.Banner) {
                ShowBanner ();
            }

            if (conf.Help) {
                ShowHelpMessage ();
                return;
            }

            // make sure only one instance is online

            if (!conf.AllowMultiple && !InstanceIsUnique ()) {
                Console.WriteLine ("Only one instance of process allowed. User -m for muliple instances.");
                return;
            }

            // check if http listener is supported

            if (!HttpListener.IsSupported) {
                Console.WriteLine ("Windows XP SP2 or Server 2003 is required to use the HttpListener class.");
                return;
            }

            // run server
            RunServer (conf);
        }

        /// <summary>
        /// Find out if there are one or more instances of this program running
        /// </summary>
        /// <returns>n processes</returns>
        private static bool InstanceIsUnique () {
            if (mutex.WaitOne (TimeSpan.Zero, true)) {
                mutex.ReleaseMutex ();
                return true;
            }
            return false;
        }

        /// <summary>
        /// Run server
        /// </summary>
        /// <param name="conf">server configuration</param>
        private static void RunServer (Configuration conf) {
            using (Server server = new Server().Start(conf.IpAddress, conf.Port)) {
                if (!server.IsRunning ()) {
                    Console.WriteLine ("Could not start server... Exiting.");
                    return;
                }

                Console.WriteLine ("Server running press [c] to stop");
                while (server.IsRunning() && Console.ReadKey(true).Key != ConsoleKey.C)
                    ;
                server.Stop ();
            }
        }

        private static void ShowBanner () {
            Console.WriteLine (Application.ProductName + " - Desktop sharing server");
            Console.WriteLine ("Copyright (c) Joao Vilaca, 2013, Email: jvilaca@gmail.com");
            Console.WriteLine ();
        }

        private static void ShowHelpMessage () {
            Console.WriteLine ("Syntax: " + ApplicationName + " [Port to listen] [Options]");
            Console.WriteLine ("Example: " + ApplicationName + " 6060 -b");
            Console.WriteLine ("Options: -b :\tDon't show banner message;");
            Console.WriteLine ("         -m :\tAllow multiple instances;");
            Console.WriteLine ("         -h :\tHelp (This screen);");
            //            Console.WriteLine("\t-i :\tInstall as Windows service");
            //            Console.WriteLine("\t-u :\tUninstall as Windows service");
        }
    }
}