protected async Task Test_GatewaySelection(IGatewayListProvider listProvider)
{
IList <Uri> gatewayUris = listProvider.GetGateways().GetResult();
Assert.True(gatewayUris.Count > 0, $"Found some gateways. Data = {Utils.EnumerableToString(gatewayUris)}");
var gatewayEndpoints = gatewayUris.Select(uri =>
{
return(new IPEndPoint(IPAddress.Parse(uri.Host), uri.Port));
}).ToList();
var gatewayManager = new GatewayManager(Options.Create(new GatewayOptions()), listProvider, NullLoggerFactory.Instance, null);
await gatewayManager.StartAsync(CancellationToken.None);
var counts = new int[4];
for (int i = 0; i < 2300; i++)
{
var ip = gatewayManager.GetLiveGateway();
var addr = ip.Endpoint.Address;
Assert.Equal(IPAddress.Loopback, addr); // "Incorrect IP address returned for gateway"
Assert.True((0 < ip.Endpoint.Port) && (ip.Endpoint.Port < 5), "Incorrect IP port returned for gateway");
counts[ip.Endpoint.Port - 1]++;
}
// The following needed to be changed as the gateway manager now round-robins through the available gateways, rather than
// selecting randomly based on load numbers.
//Assert.True((500 < counts[0]) && (counts[0] < 1500), "Gateway selection is incorrectly skewed");
//Assert.True((500 < counts[1]) && (counts[1] < 1500), "Gateway selection is incorrectly skewed");
//Assert.True((125 < counts[2]) && (counts[2] < 375), "Gateway selection is incorrectly skewed");
//Assert.True((25 < counts[3]) && (counts[3] < 75), "Gateway selection is incorrectly skewed");
//Assert.True((287 < counts[0]) && (counts[0] < 1150), "Gateway selection is incorrectly skewed");
//Assert.True((287 < counts[1]) && (counts[1] < 1150), "Gateway selection is incorrectly skewed");
//Assert.True((287 < counts[2]) && (counts[2] < 1150), "Gateway selection is incorrectly skewed");
//Assert.True((287 < counts[3]) && (counts[3] < 1150), "Gateway selection is incorrectly skewed");
int low = 2300 / 4;
int up = 2300 / 4;
Assert.True((low <= counts[0]) && (counts[0] <= up), "Gateway selection is incorrectly skewed. " + counts[0]);
Assert.True((low <= counts[1]) && (counts[1] <= up), "Gateway selection is incorrectly skewed. " + counts[1]);
Assert.True((low <= counts[2]) && (counts[2] <= up), "Gateway selection is incorrectly skewed. " + counts[2]);
Assert.True((low <= counts[3]) && (counts[3] <= up), "Gateway selection is incorrectly skewed. " + counts[3]);
}
public Task StartAsync(CancellationToken cancellationToken)
{
return(manager.StartAsync(cancellationToken));
}
