NatTypeTester/STUN/Proxy/ProxyFactory.cs

using STUN.Enums;
using System;
using System.Net;

namespace STUN.Proxy
{
	public static class ProxyFactory
	{
		public static IUdpProxy CreateProxy(ProxyType type, IPEndPoint local, IPEndPoint proxy, string? user = null, string? password = null)
		{
			return type switch
			{
				ProxyType.Plain => new NoneUdpProxy(local),
				ProxyType.Socks5 => new Socks5UdpProxy(local, proxy, user, password),
				_ => throw new NotSupportedException(type.ToString())
			};
		}
	}
}