chartinger · April 9, 2016 07:27
diff --git a/Program.cs b/Program.cs
 using System;
 using System.IO;
 using System.Net;
 using System.Net.Sockets;
 using System.Text;

 namespace ConsoleWebServer
 {
    /**
     * Based on https://msdn.microsoft.com/en-us/library/6y0e13d3%28v=vs.110%29.aspx
     *
     * A Simple webserver to demonstrate the HTTP protocol.
     */
    class Program
    {
        // Incoming data from the client.
        public static string data = null;

        public static void StartListening()
        {
            // Data buffer for incoming data.
            byte[] bytes = new Byte[1024];

            // Establish the local endpoint for the socket.
            IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, 11000);

            // Create a TCP/IP socket.
            Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            // Bind the socket to the local endpoint and 
            // listen for incoming connections.
            try
            {
                listener.Bind(localEndPoint);
                listener.Listen(10);

                // Start listening for connections.
                while (true)
                {
                    Console.WriteLine("Waiting for a connection...");
                    // Program is suspended while waiting for an incoming connection.
                    Socket handler = listener.Accept();
                    data = null;

                    // An incoming connection needs to be processed.
                    while (true)
                    {
                        bytes = new byte[1024];
                        int bytesRec = handler.Receive(bytes);
                        data += Encoding.ASCII.GetString(bytes, 0, bytesRec);
                        if (data.Length > 0)
                        {
                            break;
                        }
                    }

                    // Show the data on the console.
                    Console.WriteLine("Text received:");
                    Console.WriteLine("----------------------------");
                    Console.WriteLine("{0}", data);
                    Console.WriteLine("----------------------------");


                    string request_url = getRequestUrl(data);
                    string response = getResponseFor(request_url);

                    // Echo the data back to the client.
                    byte[] reponse_bytes = Encoding.ASCII.GetBytes(response);
                    handler.Send(reponse_bytes);
                    handler.Shutdown(SocketShutdown.Both);
                    handler.Close();
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
            }

            Console.WriteLine("\nPress ENTER to continue...");
            Console.Read();

        }

        private static string getRequestUrl(string data)
        {
            string request_url = "";
            using (StringReader sr = new StringReader(data))
            {
                string request_line;
                while ((request_line = sr.ReadLine()) != null)
                {
                    if (request_line.StartsWith("GET"))
                    {
                        var request_token = request_line.Split(new[] { ' ' });
                        if (request_token.Length > 2)
                        {
                            request_url = request_token[1];
                            break;
                        }
                    }
                }
            }
            return request_url;
        }

        private static string getResponseFor(string request_url)
        {
            StringBuilder response = new StringBuilder();
            if (request_url.Equals("/"))
            {
                response.AppendLine("HTTP/1.0 200 OK");
                response.AppendLine("Content-Type: text/html");
                response.AppendLine();
                response.AppendLine("<html><h1>YEY - Response from our ConsoleWebServer!</h1></html>");
            }
            else if (request_url.StartsWith("/hello/"))
            {
                string name = request_url.Split('/')[2];
                response.AppendLine("HTTP/1.0 200 OK");
                response.AppendLine("Content-Type: text/html");
                response.AppendLine();
                response.Append("<html><h1>Hello ");
                response.Append(name);
                response.AppendLine("</h1></html>");
            }
            else if (request_url.StartsWith("/info.html"))
            {
                string file_content = File.ReadAllText(@"../../info.html");
                response.AppendLine("HTTP/1.0 200 OK");
                response.AppendLine("Content-Type: text/html");
                response.AppendLine();
                response.Append(file_content);
            }
            else
            {
                response.AppendLine("HTTP/1.0 404 Not Found");
                response.AppendLine("Content-Type: text/html");
                response.AppendLine();
                response.AppendLine("<html>Oh no! I can't find what you are looking for :(</html>");
            }
            return response.ToString();
        }

        static int Main(string[] args)
        {
            StartListening();
            return 0;
        }
    }
 }
	using System;
	using System.IO;
	using System.Net;
	using System.Net.Sockets;
	using System.Text;

	namespace ConsoleWebServer
	{
	/**
	* Based on https://msdn.microsoft.com/en-us/library/6y0e13d3%28v=vs.110%29.aspx
	*
	* A Simple webserver to demonstrate the HTTP protocol.
	*/
	class Program
	{
	// Incoming data from the client.
	public static string data = null;

	public static void StartListening()
	{
	// Data buffer for incoming data.
	byte[] bytes = new Byte[1024];

	// Establish the local endpoint for the socket.
	IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, 11000);

	// Create a TCP/IP socket.
	Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

	// Bind the socket to the local endpoint and
	// listen for incoming connections.
	try
	{
	listener.Bind(localEndPoint);
	listener.Listen(10);

	// Start listening for connections.
	while (true)
	{
	Console.WriteLine("Waiting for a connection...");
	// Program is suspended while waiting for an incoming connection.
	Socket handler = listener.Accept();
	data = null;

	// An incoming connection needs to be processed.
	while (true)
	{
	bytes = new byte[1024];
	int bytesRec = handler.Receive(bytes);
	data += Encoding.ASCII.GetString(bytes, 0, bytesRec);
	if (data.Length > 0)
	{
	break;
	}
	}

	// Show the data on the console.
	Console.WriteLine("Text received:");
	Console.WriteLine("----------------------------");
	Console.WriteLine("{0}", data);
	Console.WriteLine("----------------------------");


	string request_url = getRequestUrl(data);
	string response = getResponseFor(request_url);

	// Echo the data back to the client.
	byte[] reponse_bytes = Encoding.ASCII.GetBytes(response);
	handler.Send(reponse_bytes);
	handler.Shutdown(SocketShutdown.Both);
	handler.Close();
	}
	}
	catch (Exception e)
	{
	Console.WriteLine(e.ToString());
	}

	Console.WriteLine("\nPress ENTER to continue...");
	Console.Read();

	}

	private static string getRequestUrl(string data)
	{
	string request_url = "";
	using (StringReader sr = new StringReader(data))
	{
	string request_line;
	while ((request_line = sr.ReadLine()) != null)
	{
	if (request_line.StartsWith("GET"))
	{
	var request_token = request_line.Split(new[] { ' ' });
	if (request_token.Length > 2)
	{
	request_url = request_token[1];
	break;
	}
	}
	}
	}
	return request_url;
	}

	private static string getResponseFor(string request_url)
	{
	StringBuilder response = new StringBuilder();
	if (request_url.Equals("/"))
	{
	response.AppendLine("HTTP/1.0 200 OK");
	response.AppendLine("Content-Type: text/html");
	response.AppendLine();
	response.AppendLine("<html><h1>YEY - Response from our ConsoleWebServer!</h1></html>");
	}
	else if (request_url.StartsWith("/hello/"))
	{
	string name = request_url.Split('/')[2];
	response.AppendLine("HTTP/1.0 200 OK");
	response.AppendLine("Content-Type: text/html");
	response.AppendLine();
	response.Append("<html><h1>Hello ");
	response.Append(name);
	response.AppendLine("</h1></html>");
	}
	else if (request_url.StartsWith("/info.html"))
	{
	string file_content = File.ReadAllText(@"../../info.html");
	response.AppendLine("HTTP/1.0 200 OK");
	response.AppendLine("Content-Type: text/html");
	response.AppendLine();
	response.Append(file_content);
	}
	else
	{
	response.AppendLine("HTTP/1.0 404 Not Found");
	response.AppendLine("Content-Type: text/html");
	response.AppendLine();
	response.AppendLine("<html>Oh no! I can't find what you are looking for :(</html>");
	}
	return response.ToString();
	}

	static int Main(string[] args)
	{
	StartListening();
	return 0;
	}
	}
	}