public async Task ReceiveSent_TCP_Success(bool ipv6)
{
if (ipv6 && PlatformDetection.IsOSX)
{
// [ActiveIssue("https://github.com/dotnet/runtime/issues/47335")]
// accept() will create a (seemingly) DualMode socket on Mac,
// but since recvmsg() does not work with DualMode on that OS, we throw PNSE CheckDualModeReceiveSupport().
// Weirdly, the flag is readable, but an attempt to write it leads to EINVAL.
// The best option seems to be to skip this test for the Mac+IPV6 case
return;
}
(Socket sender, Socket receiver) = SocketTestExtensions.CreateConnectedSocketPair(ipv6);
using (sender)
using (receiver)
{
byte[] sendBuffer = { 1, 2, 3 };
sender.Send(sendBuffer);
byte[] receiveBuffer = new byte[3];
var r = await ReceiveMessageFromAsync(receiver, receiveBuffer, sender.LocalEndPoint);
Assert.Equal(3, r.ReceivedBytes);
AssertExtensions.SequenceEqual(sendBuffer, receiveBuffer);
}
}
public async Task SendFileAsync_CanceledDuringOperation_Throws(bool ipv6)
{
const int CancelAfter = 200; // ms
const int NumOfSends = 100;
const int SendBufferSize = 1024;
(Socket client, Socket server) = SocketTestExtensions.CreateConnectedSocketPair(ipv6);
byte[] buffer = new byte[1024 * 64];
using (client)
using (server)
{
client.SendBufferSize = SendBufferSize;
CancellationTokenSource cts = new CancellationTokenSource();
List <Task> tasks = new List <Task>();
// After flooding the socket with a high number of SendFile tasks,
// we assume some of them won't complete before the "CancelAfter" period expires.
for (int i = 0; i < NumOfSends; i++)
{
var task = server.SendFileAsync(null, buffer, ReadOnlyMemory <byte> .Empty, TransmitFileOptions.UseDefaultWorkerThread, cts.Token).AsTask();
tasks.Add(task);
}
cts.CancelAfter(CancelAfter);
// We shall see at least one cancellation amongst all the scheduled sends:
await Assert.ThrowsAnyAsync <OperationCanceledException>(() => Task.WhenAll(tasks));
}
}
public void ConnectWithV4AndV6_Success()
{
int port;
TcpListener listener = SocketTestExtensions.CreateAndStartTcpListenerOnAnonymousPort(out port);
IAsyncResult asyncResult = listener.BeginAcceptTcpClient(null, null);
TcpClient v6Client = new TcpClient(AddressFamily.InterNetworkV6);
v6Client.ConnectAsync(IPAddress.IPv6Loopback, port).GetAwaiter().GetResult();
TcpClient acceptedV6Client = listener.EndAcceptTcpClient(asyncResult);
Assert.Equal(AddressFamily.InterNetworkV6, acceptedV6Client.Client.RemoteEndPoint.AddressFamily);
Assert.Equal(AddressFamily.InterNetworkV6, v6Client.Client.RemoteEndPoint.AddressFamily);
asyncResult = listener.BeginAcceptTcpClient(null, null);
TcpClient v4Client = new TcpClient(AddressFamily.InterNetwork);
v4Client.ConnectAsync(IPAddress.Loopback, port).GetAwaiter().GetResult();
TcpClient acceptedV4Client = listener.EndAcceptTcpClient(asyncResult);
Assert.Equal(AddressFamily.InterNetworkV6, acceptedV4Client.Client.RemoteEndPoint.AddressFamily);
Assert.Equal(AddressFamily.InterNetwork, v4Client.Client.RemoteEndPoint.AddressFamily);
v6Client.Dispose();
acceptedV6Client.Dispose();
v4Client.Dispose();
acceptedV4Client.Dispose();
listener.Stop();
}
public async Task SliceBuffers_Success()
{
if (!SupportsSendFileSlicing)
{
return; // The overloads under test only support sending byte[] without offset and length
}
Random rnd = new Random(0);
ArraySegment <byte> preBuffer = new ArraySegment <byte>(new byte[100], 25, 50);
ArraySegment <byte> postBuffer = new ArraySegment <byte>(new byte[100], 25, 50);
rnd.NextBytes(preBuffer);
rnd.NextBytes(postBuffer);
byte[] expected = preBuffer.ToArray().Concat(postBuffer.ToArray()).ToArray();
(Socket client, Socket server) = SocketTestExtensions.CreateConnectedSocketPair();
using (client)
using (server)
{
await SendFileAsync(client, null, preBuffer, postBuffer, TransmitFileOptions.UseDefaultWorkerThread);
byte[] receiveBuffer = new byte[100];
int receivedBytes = server.Receive(receiveBuffer);
Assert.Equal(100, receivedBytes);
AssertExtensions.SequenceEqual(expected, receiveBuffer);
}
}
public void EndReceive_Throws_SocketException()
{
(Socket a, Socket b) = SocketTestExtensions.CreateConnectedSocketPair();
using (b)
{
var iar = a.BeginReceive(new byte[1], 0, 1, SocketFlags.None, null, null);
a.Dispose();
Assert.Throws <SocketException>(() => a.EndReceive(iar));
}
}
public void SetUnsupportedSocketOptionIntArg_DoesNotDisconnectSocket()
{
(Socket socket1, Socket socket2) = SocketTestExtensions.CreateConnectedSocketPair();
using (socket1)
using (socket2)
{
SocketException se = Assert.Throws <SocketException>(() => socket1.SetSocketOption(SocketOptionLevel.Socket, (SocketOptionName)(-1), optionValue: 1));
Assert.True(se.SocketErrorCode == SocketError.ProtocolOption ||
se.SocketErrorCode == SocketError.OperationNotSupported, $"SocketError: {se.SocketErrorCode}");
Assert.True(socket1.Connected, "Connected");
}
}
public void SetUnsupportedRawSocketOption_DoesNotDisconnectSocket()
{
(Socket socket1, Socket socket2) = SocketTestExtensions.CreateConnectedSocketPair();
using (socket1)
using (socket2)
{
var optionValue = new byte[4];
SocketException se = Assert.Throws <SocketException>(() => socket1.SetRawSocketOption(SOL_SOCKET, -1, optionValue));
Assert.True(se.SocketErrorCode == SocketError.ProtocolOption ||
se.SocketErrorCode == SocketError.OperationNotSupported, $"SocketError: {se.SocketErrorCode}");
Assert.True(socket1.Connected, "Connected");
}
}
public void ConnectWithV6_Success()
{
int port;
TcpListener listener = SocketTestExtensions.CreateAndStartTcpListenerOnAnonymousPort(out port);
IAsyncResult asyncResult = listener.BeginAcceptTcpClient(null, null);
TcpClient client = new TcpClient(AddressFamily.InterNetworkV6);
client.ConnectAsync(IPAddress.IPv6Loopback, port).GetAwaiter().GetResult();
TcpClient acceptedClient = listener.EndAcceptTcpClient(asyncResult);
client.Dispose();
acceptedClient.Dispose();
listener.Stop();
}
public async Task FileDoesNotExist_ThrowsFileNotFoundException(bool useOverloadWithBuffers)
{
string doesNotExist = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
(Socket client, Socket server) = SocketTestExtensions.CreateConnectedSocketPair();
using (client)
using (server)
{
if (!useOverloadWithBuffers)
{
await Assert.ThrowsAsync <FileNotFoundException>(() => SendFileAsync(client, doesNotExist));
}
else
{
await Assert.ThrowsAsync <FileNotFoundException>(() => SendFileAsync(client, doesNotExist, null, null, TransmitFileOptions.UseDefaultWorkerThread));
}
}
}
public async Task SliceBuffers_Success()
{
if (!SupportsSendFileSlicing)
{
return; // The overloads under test only support sending byte[] without offset and length
}
Random rnd = new Random(0);
ArraySegment <byte> preBuffer = new ArraySegment <byte>(new byte[100], 25, 50);
ArraySegment <byte> postBuffer = new ArraySegment <byte>(new byte[100], 25, 50);
rnd.NextBytes(preBuffer);
rnd.NextBytes(postBuffer);
byte[] expected = preBuffer.ToArray().Concat(postBuffer.ToArray()).ToArray();
uint expectedChecksum = Fletcher32.Checksum(expected, 0, expected.Length);
(Socket client, Socket server) = SocketTestExtensions.CreateConnectedSocketPair();
using (client)
using (server)
{
await SendFileAsync(client, null, preBuffer, postBuffer, TransmitFileOptions.UseDefaultWorkerThread);
Fletcher32 receivedChecksum = new Fletcher32();
byte[] receiveBuffer = new byte[expected.Length];
int receivedBytes;
int totalReceived = 0;
while (totalReceived < expected.Length && (receivedBytes = server.Receive(receiveBuffer)) != 0)
{
totalReceived += receivedBytes;
receivedChecksum.Add(receiveBuffer, 0, receivedBytes);
}
Assert.Equal(expected.Length, totalReceived);
Assert.Equal(expectedChecksum, receivedChecksum.Sum);
}
}
public async Task SyncSendFileGetsCanceledByDispose()
{
// We try this a couple of times to deal with a timing race: if the Dispose happens
// before the operation is started, the peer won't see a ConnectionReset SocketException and we won't
// see a SocketException either.
int msDelay = 100;
await RetryHelper.ExecuteAsync(async() =>
{
(Socket socket1, Socket socket2) = SocketTestExtensions.CreateConnectedSocketPair();
using (socket2)
{
Task socketOperation = Task.Run(() =>
{
// Create a large file that will cause SendFile to block until the peer starts reading.
string filename = GetTestFilePath();
using (var fs = new FileStream(filename, FileMode.CreateNew, FileAccess.Write))
{
fs.SetLength(20 * 1024 * 1024 /* 20MB */);
}
socket1.SendFile(filename);
});
// Wait a little so the operation is started.
await Task.Delay(msDelay);
msDelay *= 2;
Task disposeTask = Task.Run(() => socket1.Dispose());
var cts = new CancellationTokenSource();
Task timeoutTask = Task.Delay(30000, cts.Token);
Assert.NotSame(timeoutTask, await Task.WhenAny(disposeTask, socketOperation, timeoutTask));
cts.Cancel();
await disposeTask;
SocketError?localSocketError = null;
try
{
await socketOperation;
}
catch (SocketException se)
{
localSocketError = se.SocketErrorCode;
}
catch (ObjectDisposedException)
{ }
Assert.Equal(SocketError.ConnectionAborted, localSocketError);
// On OSX, we're unable to unblock the on-going socket operations and
// perform an abortive close.
if (!PlatformDetection.IsOSXLike)
{
SocketError?peerSocketError = null;
var receiveBuffer = new byte[4096];
while (true)
{
try
{
int received = socket2.Receive(receiveBuffer);
if (received == 0)
{
break;
}
}
catch (SocketException se)
{
peerSocketError = se.SocketErrorCode;
break;
}
}
Assert.Equal(SocketError.ConnectionReset, peerSocketError);
}
}
}, maxAttempts : 10);
}
public async Task SendFileGetsCanceledByDispose(bool owning)
{
// Aborting sync operations for non-owning handles is not supported on Unix.
if (!owning && UsesSync && !PlatformDetection.IsWindows)
{
return;
}
// We try this a couple of times to deal with a timing race: if the Dispose happens
// before the operation is started, the peer won't see a ConnectionReset SocketException and we won't
// see a SocketException either.
int msDelay = 100;
await RetryHelper.ExecuteAsync(async() =>
{
(Socket socket1, Socket socket2) = SocketTestExtensions.CreateConnectedSocketPair();
using SafeSocketHandle? owner = ReplaceWithNonOwning(ref socket1, owning);
using (socket2)
{
Task socketOperation = Task.Run(async() =>
{
// Create a large file that will cause SendFile to block until the peer starts reading.
using var tempFile = TempFile.Create();
using (var fs = new FileStream(tempFile.Path, FileMode.CreateNew, FileAccess.Write))
{
fs.SetLength(20 * 1024 * 1024 /* 20MB */);
}
await SendFileAsync(socket1, tempFile.Path);
});
// Wait a little so the operation is started.
await Task.Delay(msDelay);
msDelay *= 2;
Task disposeTask = Task.Run(() => socket1.Dispose());
await Task.WhenAny(disposeTask, socketOperation).WaitAsync(TimeSpan.FromSeconds(30));
await disposeTask;
SocketError?localSocketError = null;
try
{
await socketOperation;
}
catch (SocketException se)
{
localSocketError = se.SocketErrorCode;
}
if (UsesSync)
{
Assert.Equal(SocketError.ConnectionAborted, localSocketError);
}
else
{
Assert.Equal(SocketError.OperationAborted, localSocketError);
}
owner?.Dispose();
// On OSX, we're unable to unblock the on-going socket operations and
// perform an abortive close.
if (!(UsesSync && PlatformDetection.IsOSXLike))
{
SocketError?peerSocketError = null;
var receiveBuffer = new byte[4096];
while (true)
{
try
{
int received = socket2.Receive(receiveBuffer);
if (received == 0)
{
break;
}
}
catch (SocketException se)
{
peerSocketError = se.SocketErrorCode;
break;
}
}
Assert.Equal(SocketError.ConnectionReset, peerSocketError);
}
}
}, maxAttempts : 10, retryWhen : e => e is XunitException);
}