public async void DoesAThing()
{
var hostName = new HostName("stun.l.google.com");
var port = 19302;
var taskCompletionSource = new TaskCompletionSource<StunUri>();
using (var datagramSocket = new DatagramSocket())
{
datagramSocket.MessageReceived += async (sender, e) =>
{
var buffer = await e.GetDataStream().ReadAsync(null, 100, InputStreamOptions.None).AsTask();
var stunMessage = StunMessage.Parse(buffer.ToArray());
var xorMappedAddressStunMessageAttribute = stunMessage.Attributes.OfType<XorMappedAddressStunMessageAttribute>().Single();
taskCompletionSource.SetResult(new StunUri(xorMappedAddressStunMessageAttribute.HostName, xorMappedAddressStunMessageAttribute.Port));
};
using (var inMemoryRandomAccessStream = new InMemoryRandomAccessStream())
{
var stunMessageId = new StunMessageId(CryptographicBuffer.GenerateRandom(12).ToArray());
var stunMessageType = StunMessageType.BindingRequest;
var stunMessageAttributes = new StunMessageAttribute[] { };
var stunMessage = new StunMessage(stunMessageType, stunMessageAttributes, stunMessageId);
var bytes = stunMessage.ToLittleEndianByteArray();
var outputStream = await datagramSocket.GetOutputStreamAsync(hostName, $"{port}");
var written = await outputStream.WriteAsync(bytes.AsBuffer());
}
}
var result = await taskCompletionSource.Task;
Assert.AreEqual(result.HostName, new HostName("200.100.50.25"));
Assert.AreEqual(result.Port, 12345);
}
public StunMessage(StunMessageType type, IEnumerable<StunMessageAttribute> attributes, StunMessageId id)
{
Type = type;
Attributes = attributes;
Id = id;
}
