/// <summary>
/// Initialize and create a new DnsRequestListener object
/// </summary>
public DnsRequestListener(DnsRecordProvider dnsRecordProvider, int port)
{
// Initialize the socket event pool
this._socketAsyncEventArgsPool = new Stack<SocketAsyncEventArgs>();
this.Port = 53;
this.DnsRecordProvider = dnsRecordProvider;
}
/// <summary>
/// Create a new DnsServer object
/// </summary>
public TcpDnsRequestListener(DnsRecordProvider dnsRecordProvider, int defaultPoolSize = 5000, int port = 53) : base(dnsRecordProvider, port)
{
this.listenerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
this.connectionsSemaphore = new Semaphore(defaultPoolSize, defaultPoolSize);
this.listenerSocket.ReceiveBufferSize = 20000000; //~20 megabytes
// Initialize the SocketAsyncEventArgs pool
for (int i = 0; i < defaultPoolSize; i++)
{
var socketEventArg = new SocketAsyncEventArgs();
socketEventArg.Completed += TcpSocketEventArg_Completed;
socketEventArg.RemoteEndPoint = new IPEndPoint(IPAddress.Any, this.Port);
socketEventArg.SetBuffer(new byte[4096], 0, 4096);
// Connect with a request
var request = new DnsRequestListenerSession(this, socketEventArg);
socketEventArg.UserToken = request;
// Add to the pool
this._socketAsyncEventArgsPool.Push(socketEventArg);
}
}
/// <summary>
/// Create a new DnsServer object
/// </summary>
public DnsServer(DnsRecordProvider dnsRecordProvider, int udpArgPoolSize = 5000, int tcpArgPoolSize = 5000, int port = 53)
{
this.TcpRequestListener = new TcpDnsRequestListener(dnsRecordProvider, tcpArgPoolSize, port);
this.UdpRequestListener = new UdpDnsRequestListener(dnsRecordProvider, udpArgPoolSize, port);
}