using System;
using System.ServiceModel;
using System.ServiceModel.Description;

/* código PHP para o cliente
<?php

$client = new SoapClient("http://localhost:8081/x?singleWsdl",array('trace'=>1));
//var_dump($client->__getFunctions()); 
var_dump($client->__getTypes()); 

for($x=1;$x<=1000;$x++) {
var_dump($client->__soapCall("Multiply",array(array("n1"=>$x,"n2"=>9))));
}

?>

para liberar a porta para usuário 'normal':
netsh http add urlacl url=http://+:8081/ user=todos
*/

namespace ws
{
	class Program
	{
		static void Main(string[] args)
		{
			ServiceHost selfHost = new ServiceHost(typeof(CalculatorService), new Uri("http://localhost:8081/x"));
			try {
				selfHost.AddServiceEndpoint(typeof(CalculatorService), new BasicHttpBinding(), "CalculatorService");
				selfHost.Description.Behaviors.Add(new ServiceMetadataBehavior() { HttpGetEnabled = true });
				selfHost.Open();
				Console.WriteLine("The service is ready. Press <ENTER> to terminate service.");
				Console.ReadLine();
				selfHost.Close();
			} catch (CommunicationException ce) {
				Console.WriteLine("An exception occurred: {0}", ce.Message);
				selfHost.Abort();
			}
		}
	}


	[ServiceContract]
	public class CalculatorService
	{
		[OperationContract]
		public int Add(int n1, int n2)
		{
			Console.WriteLine(n1 + "+" + n2);
			return n1 + n2;
		}

		[OperationContract]
		public int Subtract(int n1, int n2)
		{
			Console.WriteLine(n1 + "-" + n2);
			return n1 - n2;
		}

		[OperationContract]
		public int Multiply(int n1, int n2)
		{
			Console.WriteLine(n1 + "*" + n2);
			return n1 * n2;
		}

		[OperationContract]
		public int Divide(int n1, int n2)
		{
			Console.WriteLine(n1 + "/" + n2);
			return n1 / n2;
		}
	}
}