public async Task SendsRenewal()
{
int nRequests = 0;
using (var server = new MockNat())
{
server.RequestReceived += (s, req) => ++ nRequests;
var nat = new Pcp.Client(server.Address);
var lease = new Lease
{
Nat = nat,
Nonce = new byte[12],
PublicAddress = IPAddress.Loopback,
PublicPort = 1234,
InternalPort = 1234,
Lifetime = TimeSpan.FromSeconds(1)
};
using (var endpoint = new LeasedEndpoint(lease))
{
await Task.Delay(lease.Lifetime);
Assert.AreNotEqual(0, nRequests);
}
}
}
/// <summary>
/// Gets the NATs.
/// </summary>
/// <returns>
/// A sequence of NAT clients that can be talked to,
/// </returns>
/// <remarks>
/// Asks each <see cref="GetGateways">gateways</see> if it supports
/// PCP or PMP. If true, then a <see cref="NatClient"/> is retuned.
/// </remarks>
public static IEnumerable <NatClient> GetNats()
{
foreach (var gateway in GetGateways())
{
NatClient nat = new Pcp.Client(gateway);
if (nat.IsAvailableAsync().Result)
{
yield return(nat);
continue;
}
nat = new Pmp.Client(gateway);
if (nat.IsAvailableAsync().Result)
{
yield return(nat);
continue;
}
}
}
public async Task RaisesChanged_OnPortChange()
{
using (var server = new MockNat())
{
server.RequestReceived += (s, req) =>
{
var map = Message.Create <MapRequest>(req.Buffer);
var response = new MapResponse
{
AssignedExternalAdddress = map.SuggestedExternalAdddress,
AssignedExternalPort = 4321,
EpochTime = TimeSpan.FromSeconds(1),
Lifetime = TimeSpan.FromSeconds(1),
Opcode = Opcode.Map,
Nonce = map.Nonce,
InternalPort = map.InternalPort,
Protocol = map.Protocol
}.ToByteArray();
server.udp.Send(response, response.Length, req.RemoteEndPoint);
};
var nat = new Pcp.Client(server.Address);
var lease = new Lease
{
Nat = nat,
Nonce = new byte[12],
PublicAddress = IPAddress.Loopback,
PublicPort = 1234,
InternalPort = 1234,
Lifetime = TimeSpan.FromSeconds(1)
};
using (var endpoint = new LeasedEndpoint(lease))
{
int nChanges = 0;
endpoint.Changed += (s, e) => ++ nChanges;
await Task.Delay(lease.Lifetime);
Assert.AreNotEqual(0, nChanges);
}
}
}