[InlineData(1000)] // yes buffered stream
public async Task TcpSocketClient_ShouldBeAbleToDisconnectThenReconnect(int bufferSize)
{
TcpSocketClient sut = null;
var port = PortGranter.GrantPort();
var listener = new TcpSocketListener();
await listener.StartListeningAsync(port);
if (bufferSize != -1)
{
sut = new TcpSocketClient(bufferSize);
}
else
{
sut = new TcpSocketClient();
}
await sut.ConnectAsync("127.0.0.1", port);
await sut.DisconnectAsync();
await sut.ConnectAsync("127.0.0.1", port);
await sut.DisconnectAsync();
await listener.StopListeningAsync();
}
public async Task TcpSocketClient_ShouldBeAbleToConnect()
{
var port = PortGranter.GrantPort();
var listener = new TcpSocketListener();
await listener.StartListeningAsync(port);
var sut = new TcpSocketClient();
await sut.ConnectAsync("127.0.0.1", port);
await listener.StopListeningAsync();
// getting here means nothing went boom
Assert.True(true);
}
public async Task TcpSocketClient_ShouldSendReceiveData()
{
var bytesToSend = new byte[] { 0x1, 0x2, 0x3, 0x4, 0x5 };
var len = bytesToSend.Length;
var port = PortGranter.GrantPort();
var listener = new TcpSocketListener();
await listener.StartListeningAsync(port);
var tcs = new TaskCompletionSource <bool>();
listener.ConnectionReceived += async(sender, args) =>
{
var bytesReceived = new byte[len];
await args.SocketClient.ReadStream.ReadAsync(bytesReceived, 0, len);
var allSame =
Enumerable
.Zip(bytesToSend,
bytesReceived,
(s, r) => s == r)
.All(b => b);
tcs.SetResult(allSame);
};
var client = new TcpSocketClient();
await client.ConnectAsync("127.0.0.1", port);
await client.WriteStream.WriteAsync(bytesToSend, 0, len);
var ok = await tcs.Task;
await listener.StopListeningAsync();
Assert.True(ok);
}
public async Task TcpSocketClient_ShouldSendReceiveDataSimultaneously(int bufferSize)
{
var port = PortGranter.GrantPort();
TcpSocketListener listener = null;
TcpSocketClient socket1 = null;
// get both ends of a connected socket, with or without buffer
if (bufferSize != -1)
{
listener = new TcpSocketListener(bufferSize);
socket1 = new TcpSocketClient(bufferSize);
}
else
{
listener = new TcpSocketListener();
socket1 = new TcpSocketClient();
}
var tcs = new TaskCompletionSource <ITcpSocketClient>();
await listener.StartListeningAsync(port);
listener.ConnectionReceived += (sender, args) => tcs.SetResult(args.SocketClient);
await socket1.ConnectAsync("127.0.0.1", port);
var socket2 = await tcs.Task;
await listener.StopListeningAsync();
// socket1 is the socket from the client end
// socket2 is the socket from the server end
// for five seconds, send and receive the data
var sentToSocket1 = new List <byte>();
var sentToSocket2 = new List <byte>();
var recvdBySocket1 = new List <byte>();
var recvdBySocket2 = new List <byte>();
// send random data and keep track of it
// also keep track of what is received
Func <ITcpSocketClient, List <byte>, List <byte>, CancellationToken, Task> sendAndReceive =
(socket, sent, recvd, token) =>
{
var r = new Random(socket.GetHashCode());
var send = Task.Run(async() =>
{
var buf = new byte[1000];
while (!token.IsCancellationRequested)
{
r.NextBytes(buf);
sent.AddRange(buf);
await socket.WriteStream.WriteAsync(buf, 0, buf.Length, token);
await socket.WriteStream.FlushAsync(token);
}
});
var recv = Task.Run(async() =>
{
var buf = new byte[1000];
while (!token.IsCancellationRequested)
{
var len = await socket.ReadStream.ReadAsync(buf, 0, buf.Length, token);
recvd.AddRange(buf.Take(len));
}
});
var innerTcs = new TaskCompletionSource <bool>();
token.Register(() => innerTcs.SetResult(true));
return(innerTcs.Task);
};
// let the sockets run for 2.5 seconds
var socketRunners =
Task.WhenAll(
Task.Run(() => sendAndReceive(socket1, sentToSocket2, recvdBySocket1, new CancellationTokenSource(TimeSpan.FromSeconds(2.5)).Token).ContinueWith(t => Debug.WriteLine($"Socket 1 task completed: {t}"))),
Task.Run(() => sendAndReceive(socket2, sentToSocket1, recvdBySocket2, new CancellationTokenSource(TimeSpan.FromSeconds(2.5)).Token).ContinueWith(t => Debug.WriteLine($"Socket 2 task completed: {t}")))
);
await socketRunners;
Debug.WriteLine("Sent to S1:{0}, Recvd by S1:{1}", sentToSocket1.Count, recvdBySocket1.Count);
Debug.WriteLine("Sent to S2:{0}, Recvd by S2:{1}", sentToSocket2.Count, recvdBySocket2.Count);
// zip will join up to the lowest index of both lists (must be recvd)
// it's ok if recvd is shorter than sent because we cancel abruptly,
// but we want to be sure that everything that was received matches
// everything that sent, and that we did both send and receive.
var socket1Errors =
Enumerable.Zip(recvdBySocket1, sentToSocket1,
(r, s) => s == r)
.Count(b => !b);
var socket2Errors =
Enumerable.Zip(recvdBySocket2,
sentToSocket2,
(r, s) => s == r)
.Count(b => !b);
var max = new[] { recvdBySocket1.Count, recvdBySocket2.Count, sentToSocket1.Count, sentToSocket2.Count }.Max();
Func <List <byte>, int, string> getValueOrStars =
(bytes, i) => bytes.Count > i ? ((int)bytes[i]).ToString().PadLeft(3, '0') : "***";
var rows =
Enumerable.Range(0, max - 1)
.Select(i =>
{
var sTo1 = getValueOrStars(sentToSocket1, i);
var rBy1 = getValueOrStars(recvdBySocket1, i);
var sTo2 = getValueOrStars(sentToSocket2, i);
var rBy2 = getValueOrStars(recvdBySocket2, i);
return(new { Index = i, SentTo1 = sTo1, ReceivedBy1 = rBy1, SentTo2 = sTo2, ReceivedBy2 = rBy2 });
})
.Where(r => (r.SentTo1 != r.ReceivedBy1 && r.ReceivedBy1 != "***") || (r.SentTo2 != r.ReceivedBy2 && r.ReceivedBy2 != "***"))
.Select(r => $"{r.Index}: \t{r.SentTo1}\t{r.ReceivedBy1}\t{r.SentTo2}\t{r.ReceivedBy2}\t")
.Take(1000);
Func <IEnumerable <byte>, string> show = bs => $"[ {String.Join(", ", bs.Take(5).Select(b => (int) b))} ]";
if (socket1Errors > 0 || socket2Errors > 0)
{
Assert.True(socket1Errors == 0,
$"Socket1 received {socket1Errors} byte/s that did not match what was sent to it{Environment.NewLine}{String.Join(Environment.NewLine, rows)}");
Assert.True(socket2Errors == 0,
$"Socket2 received {socket2Errors} byte/s that did not match what was sent to it{Environment.NewLine}{String.Join(Environment.NewLine, rows)}");
}
// eww, but does the job we need
Assert.True(recvdBySocket1.Count > 5000, String.Format("Socket 1 received data count was less than 5000 : {0}", recvdBySocket1.Count));
Assert.True(recvdBySocket2.Count > 5000, String.Format("Socket 2 received data count was less than 5000 : {0}", recvdBySocket2.Count));
await socket1.DisconnectAsync();
await socket2.DisconnectAsync();
}
public async Task TcpSocketClient_ShouldSendReceiveDataSimultaneously(int bufferSize)
{
var port = PortGranter.GrantPort();
TcpSocketListener listener = null;
TcpSocketClient socket1 = null;
// get both ends of a connected socket, with or without buffer
if (bufferSize != -1)
{
listener = new TcpSocketListener(bufferSize);
socket1 = new TcpSocketClient(bufferSize);
}
else
{
listener = new TcpSocketListener();
socket1 = new TcpSocketClient();
}
var tcs = new TaskCompletionSource <ITcpSocketClient>();
await listener.StartListeningAsync(port);
listener.ConnectionReceived += (sender, args) => tcs.SetResult(args.SocketClient);
await socket1.ConnectAsync("127.0.0.1", port);
var socket2 = await tcs.Task;
await listener.StopListeningAsync();
// socket1 is the socket from the client end
// socket2 is the socket from the server end
// for five seconds, send and receive the data
var sentToSocket1 = new List <byte>();
var sentToSocket2 = new List <byte>();
var recvdBySocket1 = new List <byte>();
var recvdBySocket2 = new List <byte>();
// send random data and keep track of it
// also keep track of what is received
Func <ITcpSocketClient, List <byte>, List <byte>, CancellationToken, Task> sendAndReceive =
(socket, sent, recvd, token) =>
{
var r = new Random(socket.GetHashCode());
var send = Task.Run(async() =>
{
var buf = new byte[1000];
while (!token.IsCancellationRequested)
{
r.NextBytes(buf);
sent.AddRange(buf);
await socket.WriteStream.WriteAsync(buf, 0, buf.Length, token);
await socket.WriteStream.FlushAsync();
}
});
var recv = Task.Run(async() =>
{
var buf = new byte[1000];
while (!token.IsCancellationRequested)
{
await socket.ReadStream.ReadAsync(buf, 0, buf.Length, token);
recvd.AddRange(buf);
}
});
return(Task.WhenAll(send, recv));
};
// let the sockets run for 2.5 seconds
var cts = new CancellationTokenSource();
var timer = Task.Run(() => Task.Delay(TimeSpan.FromSeconds(2.5)).ContinueWith(t => cts.Cancel()));
var socketRunners =
Task.WhenAll(
Task.Run(() => sendAndReceive(socket1, sentToSocket2, recvdBySocket1, cts.Token)),
Task.Run(() => sendAndReceive(socket2, sentToSocket1, recvdBySocket2, cts.Token))
);
await timer;
await socketRunners;
Debug.WriteLine("Sent to S1:{0}, Recvd by S1:{1}", sentToSocket1.Count, recvdBySocket1.Count);
Debug.WriteLine("Sent to S2:{0}, Recvd by S2:{1}", sentToSocket2.Count, recvdBySocket2.Count);
// zip will join up to the lowest index of both lists (must be recvd)
// it's ok if recvd is shorter than sent because we cancel abruptly,
// but we want to be sure that everything that was received matches
// everything that sent, and that we did both send and receive.
var socket1OK =
Enumerable.Zip(sentToSocket1,
recvdBySocket1,
(s, r) => s == r)
.All(b => b);
var socket2OK =
Enumerable.Zip(sentToSocket1,
recvdBySocket1,
(s, r) => s == r)
.All(b => b);
Assert.True(socket1OK, "Socket1 received data did not match what was sent to it");
Assert.True(socket2OK, "Socket2 received data did not match what was sent to it");
// eww, but does the job we need
Assert.True(recvdBySocket1.Count > 5000, String.Format("Socket 1 received data count was less than 5000 : {0}", recvdBySocket1.Count));
Assert.True(recvdBySocket2.Count > 5000, String.Format("Socket 2 received data count was less than 5000 : {0}", recvdBySocket2.Count));
await socket1.DisconnectAsync();
await socket2.DisconnectAsync();
}