public void DefaultKeepAliveThrowsWhenNegative()
{
// Arrange
var config = new DefaultConfigurationManager();
// Assert
Assert.Throws(typeof(ArgumentOutOfRangeException), () => config.KeepAlive = -1);
}
public void KeepAliveThrowsWhenZero()
{
// Arrange
var config = new DefaultConfigurationManager();
// Assert
Assert.Throws(typeof(ArgumentOutOfRangeException), () => config.KeepAlive = TimeSpan.FromSeconds(0));
}
public void DefaultValues()
{
// Arrange
var config = new DefaultConfigurationManager();
// Assert
Assert.Equal(config.ConnectionTimeout.TotalSeconds, 110);
Assert.Equal(config.DisconnectTimeout.TotalSeconds, 40);
Assert.Equal(config.HeartbeatInterval.TotalSeconds, 10);
Assert.Equal(config.KeepAlive, 2);
}
public void DefaultValues()
{
// Arrange
var config = new DefaultConfigurationManager();
// Assert
Assert.Equal(110, config.ConnectionTimeout.TotalSeconds);
Assert.Equal(30, config.DisconnectTimeout.TotalSeconds);
Assert.Equal(10, config.KeepAlive.Value.TotalSeconds);
Assert.Equal(20, config.KeepAliveTimeout().Value.TotalSeconds);
Assert.Equal(5, config.HeartbeatInterval().TotalSeconds);
Assert.Equal(100, config.TopicTtl().TotalSeconds);
}
public void TwoSecondsAndNullOnlyValidKeepAliveValuesWhenDisconnectTimeoutIsSixSeconds()
{
// Arrange
var config = new DefaultConfigurationManager();
config.DisconnectTimeout = TimeSpan.FromSeconds(6);
// Assert
Assert.Throws(typeof(ArgumentOutOfRangeException), () => config.KeepAlive = TimeSpan.FromSeconds(1.99));
Assert.Throws(typeof(ArgumentOutOfRangeException), () => config.KeepAlive = TimeSpan.FromSeconds(2.01));
// Assert doesn't throw
config.KeepAlive = TimeSpan.FromSeconds(2);
config.KeepAlive = null;
}
public async Task FarmDisconnectRaisesUncleanDisconnects()
{
// Each node shares the same bus but are independent servers
const int nodeCount = 3;
var counters = new Infrastructure.PerformanceCounterManager();
var configurationManager = new DefaultConfigurationManager();
configurationManager.DisconnectTimeout = TimeSpan.FromSeconds(6);
using (EnableDisposableTracing())
using (var bus = new MessageBus(new StringMinifier(), new TraceManager(), counters, configurationManager, 5000))
using (var loadBalancer = new LoadBalancer(nodeCount))
{
var broadcasters = new List<IConnection>();
var disconnectCounter = new DisconnectCounter();
loadBalancer.Configure(app =>
{
var resolver = new DefaultDependencyResolver();
resolver.Register(typeof(IMessageBus), () => bus);
resolver.Register(typeof(IConfigurationManager), () => configurationManager);
resolver.Register(typeof(FarmConnection), () => new FarmConnection(disconnectCounter));
var connectionManager = resolver.Resolve<IConnectionManager>();
broadcasters.Add(connectionManager.GetConnectionContext<FarmConnection>().Connection);
app.MapSignalR<FarmConnection>("/echo", new ConnectionConfiguration
{
Resolver = resolver
});
});
var transport = new Client.Transports.LongPollingTransport(loadBalancer);
var connection = new Client.Connection("http://goo/echo");
await connection.Start(transport);
for (int i = 0; i < nodeCount; i++)
{
broadcasters[i].Broadcast(String.Format("From Node {0}: {1}", i, i + 1)).Wait();
await Task.Delay(TimeSpan.FromSeconds(1));
}
((Client.IConnection)connection).Disconnect();
await Task.Delay(TimeSpan.FromTicks(TimeSpan.FromSeconds(5).Ticks * nodeCount));
Assert.Equal(0, disconnectCounter.CleanDisconnectCount);
Assert.Equal(3, disconnectCounter.UncleanDisconnectCount);
}
}
public void KeepAliveThrowsWhenGreaterThanAThirdOfTheDisconnectTimeout()
{
// Arrange
var config = new DefaultConfigurationManager();
// Assert
Assert.Throws(typeof(ArgumentOutOfRangeException), () => config.KeepAlive = TimeSpan.FromSeconds(10.01));
config.KeepAlive = TimeSpan.FromSeconds(10);
// Arrange
config = new DefaultConfigurationManager();
config.DisconnectTimeout = TimeSpan.FromSeconds(15);
// Assert
Assert.Throws(typeof(ArgumentOutOfRangeException), () => config.KeepAlive = TimeSpan.FromSeconds(5.01));
config.KeepAlive = TimeSpan.FromSeconds(5);
}
public void TopicTopicTimeToLiveIsDoubleTheDisconnectTimeoutWhenKeepAliveIsNull()
{
var config = new DefaultConfigurationManager();
var random = new Random();
config.DisconnectTimeout = TimeSpan.FromSeconds(random.Next(6, 31536000)); // 12 seconds to a year
config.KeepAlive = null;
// Assert
Assert.Equal(TimeSpan.FromTicks(config.DisconnectTimeout.Ticks * 2), config.TopicTtl());
}
public void HeartbeatIntervalIsHalfTheKeepAlive()
{
// Arrange
var config = new DefaultConfigurationManager();
var random = new Random();
config.KeepAlive = TimeSpan.FromSeconds(random.NextDouble() * 8 + 2); // 2 to 10 seconds
// Assert
Assert.Equal(TimeSpan.FromTicks(config.KeepAlive.Value.Ticks / 2), config.HeartbeatInterval());
}
public void KeepAliveTimeoutIsTwiceTheKeepAlive()
{
// Arrange
var config = new DefaultConfigurationManager();
var random = new Random();
config.KeepAlive = TimeSpan.FromSeconds(random.NextDouble() * 8 + 2); // 2 to 10 seconds
// Assert
Assert.Equal(TimeSpan.FromTicks(config.KeepAlive.Value.Ticks * 2), config.KeepAliveTimeout());
// Arrange
config.KeepAlive = null;
// Assert
Assert.Equal(null, config.KeepAliveTimeout());
}
public void KeepAliveCannotBeConfiguredBeforeDisconnectTimeout()
{
// Arrange
var config = new DefaultConfigurationManager();
config.KeepAlive = TimeSpan.FromSeconds(5);
// Assert
Assert.Throws(typeof(InvalidOperationException), () => config.DisconnectTimeout = TimeSpan.FromSeconds(40));
// Arrange
config = new DefaultConfigurationManager();
config.KeepAlive = null;
// Assert
Assert.Throws(typeof(InvalidOperationException), () => config.DisconnectTimeout = TimeSpan.FromSeconds(40));
}
public void SettingDisconnectTimeoutSetKeepAliveToAThirdOfItself()
{
// Arrange
var config = new DefaultConfigurationManager();
var random = new Random();
config.DisconnectTimeout = TimeSpan.FromSeconds(random.Next(6, 31536000)); // 6 seconds to a year
// Assert
Assert.Equal(TimeSpan.FromTicks(config.DisconnectTimeout.Ticks / 3), config.KeepAlive);
}
public void DisconnectTimeoutThrowsWhenLessThanSixSeconds()
{
// Arrange
var config = new DefaultConfigurationManager();
// Assert
Assert.Throws(typeof(ArgumentOutOfRangeException), () => config.DisconnectTimeout = TimeSpan.FromSeconds(5.99));
config.DisconnectTimeout = TimeSpan.FromSeconds(6);
}
public async Task FarmDisconnectOnlyRaisesUncleanDisconnects()
{
EnableTracing();
// Each node shares the same bus but are indepenent servers
var counters = new SignalR.Infrastructure.PerformanceCounterManager();
var configurationManager = new DefaultConfigurationManager();
var protectedData = new DefaultProtectedData();
using (var bus = new MessageBus(new StringMinifier(), new TraceManager(), counters, configurationManager, 5000))
{
var nodeCount = 3;
var nodes = new List<ServerNode>();
for (int i = 0; i < nodeCount; i++)
{
nodes.Add(new ServerNode(bus));
}
var timeout = TimeSpan.FromSeconds(5);
foreach (var node in nodes)
{
var config = node.Resolver.Resolve<IConfigurationManager>();
config.DisconnectTimeout = TimeSpan.FromSeconds(6);
IDependencyResolver resolver = node.Resolver;
node.Server.Configure(app =>
{
app.MapSignalR<FarmConnection>("/echo", new ConnectionConfiguration
{
Resolver = resolver
});
resolver.Register(typeof(IProtectedData), () => protectedData);
});
}
var loadBalancer = new LoadBalancer(nodes.Select(f => f.Server).ToArray());
var transport = new Client.Transports.LongPollingTransport(loadBalancer);
var connection = new Client.Connection("http://goo/echo");
await connection.Start(transport);
for (int i = 0; i < nodes.Count; i++)
{
nodes[i].Broadcast(String.Format("From Node {0}: {1}", i, i + 1));
await Task.Delay(TimeSpan.FromSeconds(1));
}
((Client.IConnection)connection).Disconnect();
await Task.Delay(TimeSpan.FromTicks(timeout.Ticks * nodes.Count));
Assert.Equal(0, FarmConnection.OldOnDisconnectedCalls);
Assert.Equal(0, FarmConnection.CleanDisconnectCount);
Assert.Equal(3, FarmConnection.UncleanDisconnectCount);
}
}
public void FarmDisconnectOnlyRaisesEventOnce()
{
// Each node shares the same bus but are indepenent servers
var counters = new SignalR.Infrastructure.PerformanceCounterManager();
var configurationManager = new DefaultConfigurationManager();
using (var bus = new MessageBus(new StringMinifier(), new TraceManager(), counters, configurationManager, 5000))
{
var nodeCount = 3;
var nodes = new List<ServerNode>();
for (int i = 0; i < nodeCount; i++)
{
nodes.Add(new ServerNode(bus));
}
var timeout = TimeSpan.FromSeconds(5);
foreach (var node in nodes)
{
var config = node.Resolver.Resolve<IConfigurationManager>();
config.DisconnectTimeout = TimeSpan.FromSeconds(6);
IDependencyResolver resolver = node.Resolver;
node.Server.Configure(app =>
{
app.MapConnection<FarmConnection>("/echo", new ConnectionConfiguration
{
Resolver = resolver
});
});
}
var loadBalancer = new LoadBalancer(nodes.Select(f => f.Server).ToArray());
var transport = new Client.Transports.LongPollingTransport(loadBalancer);
var connection = new Client.Connection("http://goo/echo");
connection.Start(transport).Wait();
for (int i = 0; i < nodes.Count; i++)
{
nodes[i].Broadcast(String.Format("From Node {0}: {1}", i, i + 1));
Thread.Sleep(TimeSpan.FromSeconds(1));
}
connection.Disconnect();
Thread.Sleep(TimeSpan.FromTicks(timeout.Ticks * nodes.Count));
Assert.Equal(1, nodes.Sum(n => n.Connection.DisconnectCount));
}
}
public void DisconnectTimeoutThrowsWhenNegative()
{
// Arrange
var config = new DefaultConfigurationManager();
// Assert
Assert.Throws(typeof(ArgumentOutOfRangeException), () => config.KeepAlive = TimeSpan.FromSeconds(-1));
}
public async Task ContextGroupAddCompletesSuccessfully()
{
// https://github.com/SignalR/SignalR/issues/3337
// Each node shares the same bus but are independent servers
var counters = new Infrastructure.PerformanceCounterManager();
var configurationManager = new DefaultConfigurationManager();
using (EnableDisposableTracing())
using (var bus = new MessageBus(new StringMinifier(), new TraceManager(), counters, configurationManager, 5000))
using (var memoryHost = new MemoryHost())
{
memoryHost.Configure(app =>
{
var resolver = new DefaultDependencyResolver();
resolver.Register(typeof(IMessageBus), () => bus);
app.MapSignalR(new HubConfiguration { Resolver = resolver });
});
using (var connection = new HubConnection("http://goo/"))
{
var proxy = connection.CreateHubProxy("FarmGroupHub");
const string group = "group";
const string message = "message";
var mre = new AsyncManualResetEvent();
proxy.On<string>("message", m =>
{
if (m == message)
{
mre.Set();
}
});
await connection.Start(memoryHost);
// Add the connection to a group via an IHubContext on a "second" server.
var secondResolver = new DefaultDependencyResolver();
secondResolver.Register(typeof(IMessageBus), () => bus);
var secondConnectionManager = secondResolver.Resolve<IConnectionManager>();
var secondHubContext = secondConnectionManager.GetHubContext<FarmGroupHub>();
await secondHubContext.Groups.Add(connection.ConnectionId, group);
await proxy.Invoke("SendToGroup", group, message);
Assert.True(await mre.WaitAsync(TimeSpan.FromSeconds(5)));
}
}
}
public void HeartbeatIntervalIsASixthOfTheDisconnectTimeoutIfTheKeepAliveIsNull()
{
// Arrange
var config = new DefaultConfigurationManager();
var random = new Random();
config.DisconnectTimeout = TimeSpan.FromSeconds(random.Next(6, 31536000)); // 6 seconds to a year
config.KeepAlive = null;
// Assert
Assert.Equal(TimeSpan.FromTicks(config.DisconnectTimeout.Ticks / 6), config.HeartbeatInterval());
}
public async Task FarmGroupAddCompletesSuccessfully(TransportType transportType)
{
// https://github.com/SignalR/SignalR/issues/3337
// Each node shares the same bus but are independent servers
const int nodeCount = 2;
var counters = new Infrastructure.PerformanceCounterManager();
var configurationManager = new DefaultConfigurationManager();
// Ensure /send and /connect requests get handled by different servers
Func<string, int> scheduler = url => url.Contains("/send") ? 0 : 1;
using (EnableDisposableTracing())
using (var bus = new MessageBus(new StringMinifier(), new TraceManager(), counters, configurationManager, 5000))
using (var loadBalancer = new LoadBalancer(nodeCount, scheduler))
{
loadBalancer.Configure(app =>
{
var resolver = new DefaultDependencyResolver();
resolver.Register(typeof(IMessageBus), () => bus);
app.MapSignalR(new HubConfiguration { Resolver = resolver });
});
using (var connection = new HubConnection("http://goo/"))
{
var proxy = connection.CreateHubProxy("FarmGroupHub");
const string group = "group";
const string message = "message";
var mre = new AsyncManualResetEvent();
proxy.On<string>("message", m =>
{
if (m == message)
{
mre.Set();
}
});
Client.Transports.IClientTransport transport;
switch (transportType)
{
case TransportType.LongPolling:
transport = new Client.Transports.LongPollingTransport(loadBalancer);
break;
case TransportType.ServerSentEvents:
transport = new Client.Transports.ServerSentEventsTransport(loadBalancer);
break;
default:
throw new ArgumentException("transportType");
}
await connection.Start(transport);
await proxy.Invoke("JoinGroup", group);
await proxy.Invoke("SendToGroup", group, message);
Assert.True(await mre.WaitAsync(TimeSpan.FromSeconds(5)));
}
}
}
public void TopicTimeToLiveIsDoubleTheDisconnectAndKeepAliveTimeouts()
{
var config = new DefaultConfigurationManager();
var random = new Random();
config.DisconnectTimeout = TimeSpan.FromSeconds(random.Next(12, 31536000)); // 12 seconds to a year
config.KeepAlive = TimeSpan.FromTicks(config.DisconnectTimeout.Ticks / 6); // Set custom keep-alive to half the default
// Assert
Assert.Equal(TimeSpan.FromTicks(config.DisconnectTimeout.Ticks * 2 + config.KeepAliveTimeout().Value.Ticks * 2),
config.TopicTtl());
}