public void ReadShouldNotLoseDataFromStreamOverMultipleReads()
{
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
using (var test = new TcpSocket(endpoint, log: TestConfig.InfoLog))
{
const int firstMessage = 99;
const string secondMessage = "testmessage";
var bytes = Encoding.UTF8.GetBytes(secondMessage);
var payload = new KafkaWriter()
.Write(firstMessage)
.Write(bytes, false);
//send the combined payload
var send = server.SendDataAsync(payload.ToBytesNoLength());
var firstResponse = test.ReadAsync(4, CancellationToken.None).Result.ToInt32();
Assert.That(firstResponse, Is.EqualTo(firstMessage));
var secondResponse = Encoding.ASCII.GetString(test.ReadAsync(secondMessage.Length, CancellationToken.None).Result);
Assert.That(secondResponse, Is.EqualTo(secondMessage));
}
}
public async Task ShouldReconnectAfterLosingConnectionAndBeAbleToStartNewRead()
{
var log = TestConfig.InfoLog;
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
{
var disconnects = 0;
var connects = 0;
TaskCompletionSource <int> disconnectEvent = new TaskCompletionSource <int>();
server.OnClientConnected += () => Interlocked.Increment(ref connects);
server.OnClientDisconnected += () => Interlocked.Increment(ref disconnects);
var config = new ConnectionConfiguration(onDisconnected: (e, exception) => {
log.Info(() => LogEvent.Create("inside onDisconnected"));
disconnectEvent.TrySetResult(1);
});
using (var socket = new TcpSocket(endpoint, config, log)) {
//wait till connected
await TaskTest.WaitFor(() => connects > 0);
log.Info(() => LogEvent.Create("connects > 0"));
var readTask = socket.ReadAsync(4, CancellationToken.None);
log.Info(() => LogEvent.Create("Connected: Dropping connection..."));
server.DropConnection();
//wait till Disconnected
log.Info(() => LogEvent.Create("Waiting for onDisconnected"));
await Task.WhenAny(disconnectEvent.Task, Task.Delay(100000));
Assert.IsTrue(disconnectEvent.Task.IsCompleted, "Server should have disconnected the client.");
Assert.ThrowsAsync <ConnectionException>(async() => await readTask);
await TaskTest.WaitFor(() => connects == 2, 6000);
log.Info(() => LogEvent.Create("connects == 2"));
Assert.That(connects, Is.EqualTo(2), "Socket should have reconnected.");
var readTask2 = socket.ReadAsync(4, CancellationToken.None);
log.Info(() => LogEvent.Create("sending data (99)"));
await server.SendDataAsync(99.ToBytes());
var result = await readTask2;
Assert.That(result.ToInt32(), Is.EqualTo(99), "Socket should have received the 4 bytes.");
}
}
}
public void ReadShouldStackReadRequestsAndReturnOneAtATime()
{
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
{
var messages = new[] { "test1", "test2", "test3", "test4" };
var expectedLength = "test1".Length;
var payload = new KafkaWriter().Write(messages);
using (var socket = new TcpSocket(endpoint, log: TestConfig.WarnLog)) {
var tasks = messages.Select(x => socket.ReadAsync(x.Length, CancellationToken.None)).ToArray();
var send = server.SendDataAsync(payload.ToBytes());
Task.WaitAll(tasks);
foreach (var task in tasks)
{
Assert.That(task.Result.Length, Is.EqualTo(expectedLength));
}
}
}
}
public void ReadShouldCancelWhileAwaitingResponse()
{
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
using (var test = new TcpSocket(endpoint, log: TestConfig.InfoLog))
{
var count = 0;
var semaphore = new SemaphoreSlim(0);
var token = new CancellationTokenSource();
test.ReadAsync(4, token.Token).ContinueWith(t =>
{
Interlocked.Increment(ref count);
Assert.That(t.IsCanceled, Is.True, "Task should be set to cancelled when disposed.");
semaphore.Release();
});
Thread.Sleep(100);
token.Cancel();
semaphore.Wait(TimeSpan.FromSeconds(1));
Assert.That(count, Is.EqualTo(1), "Read should have cancelled and incremented count.");
}
}
public async Task WhenNoConnectionThrowSocketException()
{
var socket = new TcpSocket(new Endpoint(new Uri("http://not.com"), null), log: TestConfig.InfoLog);
var resultTask = socket.ReadAsync(4, CancellationToken.None);
Assert.ThrowsAsync <ConnectionException>(async() => await resultTask);
}
public async Task WhenNoConnectionThrowSocketExceptionAfterMaxRetry()
{
var reconnectionAttempt = 0;
var config = new ConnectionConfiguration(onConnecting: (endpoint, attempt, elapsed) => Interlocked.Increment(ref reconnectionAttempt));
var socket = new TcpSocket(new Endpoint(new Uri("http://not.com"), null), config, TestConfig.InfoLog);
var resultTask = socket.ReadAsync(4, CancellationToken.None);
Assert.ThrowsAsync <ConnectionException>(async() => await resultTask);
Assert.That(reconnectionAttempt, Is.AtLeast(ConnectionConfiguration.Defaults.MaxConnectionAttempts + 1));
Assert.That(reconnectionAttempt, Is.AtMost(ConnectionConfiguration.Defaults.MaxConnectionAttempts + 2));
}
public void ReadShouldBeAbleToReceiveMoreThanOnceAsyncronously()
{
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
using (var test = new TcpSocket(endpoint, log: TestConfig.InfoLog))
{
const int firstMessage = 99;
const int secondMessage = 100;
Console.WriteLine("Sending first message to receive...");
var send1 = server.SendDataAsync(firstMessage.ToBytes());
var firstResponseTask = test.ReadAsync(4, CancellationToken.None);
Console.WriteLine("Sending second message to receive...");
var send2 = server.SendDataAsync(secondMessage.ToBytes());
var secondResponseTask = test.ReadAsync(4, CancellationToken.None);
Assert.That(firstResponseTask.Result.ToInt32(), Is.EqualTo(firstMessage));
Assert.That(secondResponseTask.Result.ToInt32(), Is.EqualTo(secondMessage));
}
}
public void ReadShouldBeAbleToReceiveMoreThanOnce()
{
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
using (var test = new TcpSocket(endpoint, log: TestConfig.InfoLog))
{
const int firstMessage = 99;
const string secondMessage = "testmessage";
Console.WriteLine("Sending first message to receive...");
var send = server.SendDataAsync(firstMessage.ToBytes());
var firstResponse = test.ReadAsync(4, CancellationToken.None).Result.ToInt32();
Assert.That(firstResponse, Is.EqualTo(firstMessage));
Console.WriteLine("Sending second message to receive...");
server.SendDataAsync(secondMessage);
var secondResponse = Encoding.ASCII.GetString(test.ReadAsync(secondMessage.Length, CancellationToken.None).Result);
Assert.That(secondResponse, Is.EqualTo(secondMessage));
}
}
public async Task ReadShouldCancelWhileAwaitingReconnection()
{
int connectionAttempt = 0;
var config = new ConnectionConfiguration(onConnecting: (e, attempt, elapsed) => connectionAttempt = attempt);
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var test = new TcpSocket(endpoint, config, TestConfig.InfoLog))
using (var token = new CancellationTokenSource())
{
var taskResult = test.ReadAsync(4, token.Token);
await TaskTest.WaitFor(() => connectionAttempt > 1);
token.Cancel();
taskResult.SafeWait(TimeSpan.FromMilliseconds(1000));
Assert.That(taskResult.IsCanceled, Is.True);
}
}
public async Task ReadShouldBlockUntilAllBytesRequestedAreReceived()
{
var sendCompleted = 0;
var bytesReceived = 0;
var config = new ConnectionConfiguration(onReadChunk: (e, size, remaining, read, elapsed) => Interlocked.Add(ref bytesReceived, read));
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
using (var test = new TcpSocket(endpoint, config, TestConfig.InfoLog))
{
var resultTask = test.ReadAsync(4, CancellationToken.None).ContinueWith(t =>
{
Interlocked.Increment(ref sendCompleted);
return(t.Result);
});
Console.WriteLine("Sending first 3 bytes...");
server.HasClientConnected.Wait(TimeSpan.FromMilliseconds(1000));
var sendInitialBytes = server.SendDataAsync(new byte[] { 0, 0, 0 }).Wait(TimeSpan.FromSeconds(10));
Assert.That(sendInitialBytes, Is.True, "First 3 bytes should have been sent.");
Console.WriteLine("Ensuring task blocks...");
await TaskTest.WaitFor(() => bytesReceived > 0);
Assert.That(resultTask.IsCompleted, Is.False, "Task should still be running, blocking.");
Assert.That(sendCompleted, Is.EqualTo(0), "Should still block even though bytes have been received.");
Assert.That(bytesReceived, Is.EqualTo(3), "Three bytes should have been received and we are waiting on the last byte.");
Console.WriteLine("Sending last byte...");
var sendLastByte = server.SendDataAsync(new byte[] { 0 }).Wait(TimeSpan.FromSeconds(10));
Assert.That(sendLastByte, Is.True, "Last byte should have sent.");
Console.WriteLine("Ensuring task unblocks...");
await TaskTest.WaitFor(() => resultTask.IsCompleted);
Assert.That(bytesReceived, Is.EqualTo(4), "Should have received 4 bytes.");
Assert.That(resultTask.IsCompleted, Is.True, "Task should have completed.");
Assert.That(sendCompleted, Is.EqualTo(1), "Task ContinueWith should have executed.");
Assert.That(resultTask.Result.Length, Is.EqualTo(4), "Result of task should be 4 bytes.");
}
}
public async Task KafkaTcpSocketShouldDisposeEvenWhileAwaitingReadAndThrowException()
{
int readSize = 0;
var config = new ConnectionConfiguration(onReading: (e, size) => readSize = size);
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
using (var test = new TcpSocket(endpoint, config, TestConfig.InfoLog))
{
var taskResult = test.ReadAsync(4, CancellationToken.None);
await TaskTest.WaitFor(() => readSize > 0);
using (test) { }
taskResult.ContinueWith(t => taskResult = t).Wait(TimeSpan.FromSeconds(1));
Assert.That(taskResult.IsFaulted, Is.True);
Assert.That(taskResult.Exception.InnerException, Is.TypeOf <ObjectDisposedException>());
}
}
public async Task KafkaTcpSocketShouldDisposeEvenWhilePollingToReconnect()
{
int connectionAttempt = 0;
var config = new ConnectionConfiguration(onConnecting: (e, a, _) => {
connectionAttempt = a;
});
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var test = new TcpSocket(endpoint, config, TestConfig.InfoLog))
{
var taskResult = test.ReadAsync(4, CancellationToken.None);
await TaskTest.WaitFor(() => connectionAttempt > 1);
test.Dispose();
await Task.WhenAny(taskResult, Task.Delay(1000)).ConfigureAwait(false);
Assert.That(taskResult.IsFaulted, Is.True);
Assert.That(taskResult.Exception.InnerException, Is.TypeOf <ObjectDisposedException>());
}
}
public async Task ReadShouldThrowServerDisconnectedExceptionWhenDisconnected()
{
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
using (var socket = new TcpSocket(endpoint, log: TestConfig.InfoLog))
{
var resultTask = socket.ReadAsync(4, CancellationToken.None);
//wait till connected
await TaskTest.WaitFor(() => server.ConnectionEventcount > 0);
server.DropConnection();
await TaskTest.WaitFor(() => server.DisconnectionEventCount > 0);
resultTask.ContinueWith(t => resultTask = t).Wait(TimeSpan.FromSeconds(1));
Assert.That(resultTask.IsFaulted, Is.True);
Assert.That(resultTask.Exception.InnerException, Is.TypeOf <ConnectionException>());
}
}
public async Task SocketShouldReconnectEvenAfterCancelledRead()
{
int connectionAttempt = 0;
var config = new ConnectionConfiguration(onConnecting: (e, attempt, elapsed) => Interlocked.Exchange(ref connectionAttempt, attempt));
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var test = new TcpSocket(endpoint, config, TestConfig.InfoLog))
using (var token = new CancellationTokenSource())
{
var taskResult = test.ReadAsync(4, token.Token);
await TaskTest.WaitFor(() => connectionAttempt > 1);
var attemptsMadeSoFar = connectionAttempt;
token.Cancel();
await TaskTest.WaitFor(() => connectionAttempt > attemptsMadeSoFar);
Assert.That(connectionAttempt, Is.GreaterThan(attemptsMadeSoFar));
}
}
public void WriteAndReadShouldBeAsynchronous()
{
// for (int j = 0; j < 1000; j++)
// {
var expected = new List <int> {
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
};
var write = new ConcurrentBag <int>();
var read = new ConcurrentBag <int>();
AutoResetEvent allEventAreArrived = new AutoResetEvent(false);
AutoResetEvent allrReadEventAreArrived = new AutoResetEvent(false);
var endpoint = Endpoint.Resolve(TestConfig.ServerUri(), TestConfig.InfoLog);
using (var server = new FakeTcpServer(TestConfig.InfoLog, endpoint.IP.Port))
using (var test = new TcpSocket(endpoint, log: TestConfig.InfoLog))
{
server.OnBytesReceived += data =>
{
var d = data.Batch(4).Select(x => x.ToArray().ToInt32());
foreach (var item in d)
{
write.Add(item);
}
if (expected.Count == write.Count)
{
allEventAreArrived.Set();
}
};
var tasks = Enumerable.Range(1, 10)
.SelectMany(i => new[]
{
test.WriteAsync(new DataPayload(i.ToBytes()), CancellationToken.None),
test.ReadAsync(4, CancellationToken.None).ContinueWith(t =>
{
read.Add(t.Result.ToInt32());
if (read.Count == expected.Count)
{
allrReadEventAreArrived.Set();
}
}),
server.SendDataAsync(i.ToBytes())
}).ToArray();
Task.WaitAll(tasks);
Assert.IsTrue(allEventAreArrived.WaitOne(3000), "not Get all write event in time");
Assert.IsTrue(allrReadEventAreArrived.WaitOne(3000), "not Get all read event in time");
var w = write.OrderBy(x => x);
var r = read.OrderBy(x => x);
for (int i = 0; i < expected.Count; i++)
{
// _log.InfoFormat("write was {0} expected {1}", w.ElementAt(i), expected[i]);
Assert.That(w.ElementAt(i), Is.EqualTo(expected[i]));
}
for (int i = 0; i < expected.Count; i++)
{
// _log.InfoFormat("read was {0} expected {1}", r.ElementAt(i), expected[i]);
Assert.That(r.ElementAt(i), Is.EqualTo(expected[i]));
}
}
// }
}