public async Task <ConnectResult> ConnectToServer(string host, int port)
{
IPAddress ip;
if (!IPAddress.TryParse(host, out ip))
{
var addressList = Dns.GetHostEntry(host).AddressList;
var ipv4Addresses = Array.FindAll(addressList, a => a.AddressFamily == AddressFamily.InterNetwork);
if (ipv4Addresses.Length == 0)
{
return(ConnectResult.InvalidEndpoint);
}
ip = ipv4Addresses[0];
}
var endPoint = new IPEndPoint(ip, port);
using (var cts = new CancellationTokenSource(5000))
{
var task = _socket.ConnectAsync(endPoint, cts.Token);
await task;
return(task.IsCanceled ? ConnectResult.Timeout : task.Result);
}
}
private static void SetupConnectAsync(IAsyncSocket socket)
{
var awaitable = Substitute.For <ISocketAwaitable <bool> >();
awaitable.GetAwaiter().Returns(awaitable);
awaitable.IsCompleted.Returns(true);
awaitable.GetResult().Returns(true);
socket.ConnectAsync().Returns(awaitable);
}