public async Task TransportClosesOnCloseTimeoutIfClientDoesNotSendCloseFrame()
{
using (StartVerifiableLog())
{
var pair = DuplexPipe.CreateConnectionPair(PipeOptions.Default, PipeOptions.Default);
var connection = new HttpConnectionContext("foo", connectionToken: null, LoggerFactory.CreateLogger(nameof(HttpConnectionContext)), pair.Transport, pair.Application, new());
using (var feature = new TestWebSocketConnectionFeature())
{
var options = new WebSocketOptions()
{
CloseTimeout = TimeSpan.FromSeconds(1)
};
var ws = new WebSocketsServerTransport(options, connection.Application, connection, LoggerFactory);
var serverSocket = await feature.AcceptAsync();
// Give the server socket to the transport and run it
var transport = ws.ProcessSocketAsync(serverSocket);
// End the app
connection.Transport.Output.Complete();
await transport.DefaultTimeout(TimeSpan.FromSeconds(10));
// Now we're closed
Assert.Equal(WebSocketState.Aborted, serverSocket.State);
serverSocket.Dispose();
}
}
}
public async Task TransportFailsOnTimeoutWithErrorWhenApplicationFailsAndClientDoesNotSendCloseFrame()
{
using (StartVerifiableLog())
{
var pair = DuplexPipe.CreateConnectionPair(PipeOptions.Default, PipeOptions.Default);
var connection = new HttpConnectionContext("foo", connectionToken: null, LoggerFactory.CreateLogger(nameof(HttpConnectionContext)), pair.Transport, pair.Application, new());
using (var feature = new TestWebSocketConnectionFeature())
{
var options = new WebSocketOptions
{
CloseTimeout = TimeSpan.FromSeconds(1)
};
var ws = new WebSocketsServerTransport(options, connection.Application, connection, LoggerFactory);
var serverSocket = await feature.AcceptAsync();
// Give the server socket to the transport and run it
var transport = ws.ProcessSocketAsync(serverSocket);
// Run the client socket
var client = feature.Client.ExecuteAndCaptureFramesAsync();
// fail the client to server channel
connection.Transport.Output.Complete(new Exception());
await transport.DefaultTimeout();
Assert.Equal(WebSocketState.Aborted, serverSocket.State);
}
}
}
public async Task ClientReceivesInternalServerErrorWhenTheApplicationFails()
{
using (StartVerifiableLog())
{
var pair = DuplexPipe.CreateConnectionPair(PipeOptions.Default, PipeOptions.Default);
var connection = new HttpConnectionContext("foo", connectionToken: null, LoggerFactory.CreateLogger(nameof(HttpConnectionContext)), pair.Transport, pair.Application, new());
using (var feature = new TestWebSocketConnectionFeature())
{
var ws = new WebSocketsServerTransport(new WebSocketOptions(), connection.Application, connection, LoggerFactory);
// Give the server socket to the transport and run it
var transport = ws.ProcessSocketAsync(await feature.AcceptAsync());
// Run the client socket
var client = feature.Client.ExecuteAndCaptureFramesAsync();
// Fail in the app
connection.Transport.Output.Complete(new InvalidOperationException("Catastrophic failure."));
var clientSummary = await client.DefaultTimeout();
Assert.Equal(WebSocketCloseStatus.InternalServerError, clientSummary.CloseResult.CloseStatus);
// Close from the client
await feature.Client.CloseAsync(WebSocketCloseStatus.NormalClosure, "", CancellationToken.None);
await transport.DefaultTimeout();
}
}
}
public async Task TransportCommunicatesErrorToApplicationWhenClientDisconnectsAbnormally()
{
using (StartVerifiableLog())
{
var pair = DuplexPipe.CreateConnectionPair(PipeOptions.Default, PipeOptions.Default);
var connection = new HttpConnectionContext("foo", connectionToken: null, LoggerFactory.CreateLogger("HttpConnectionContext1"))
{
Transport = pair.Transport,
Application = pair.Application,
};
using (var feature = new TestWebSocketConnectionFeature())
{
async Task CompleteApplicationAfterTransportCompletes()
{
try
{
// Wait until the transport completes so that we can end the application
var result = await connection.Transport.Input.ReadAsync();
connection.Transport.Input.AdvanceTo(result.Buffer.End);
}
catch (Exception ex)
{
Assert.IsType <WebSocketError>(ex);
}
finally
{
// Complete the application so that the connection unwinds without aborting
connection.Transport.Output.Complete();
}
}
var connectionContext = new HttpConnectionContext(string.Empty, connectionToken: null, LoggerFactory.CreateLogger("HttpConnectionContext2"));
var ws = new WebSocketsServerTransport(new WebSocketOptions(), connection.Application, connectionContext, LoggerFactory);
// Give the server socket to the transport and run it
var transport = ws.ProcessSocketAsync(await feature.AcceptAsync());
// Run the client socket
var client = feature.Client.ExecuteAndCaptureFramesAsync();
// When the close frame is received, we complete the application so the send
// loop unwinds
_ = CompleteApplicationAfterTransportCompletes();
// Terminate the client to server channel with an exception
feature.Client.SendAbort();
// Wait for the transport
await transport.OrTimeout();
await client.OrTimeout();
}
}
}
public async Task ReceivedFramesAreWrittenToChannel(string webSocketMessageType)
{
using (StartVerifiableLog())
{
var pair = DuplexPipe.CreateConnectionPair(PipeOptions.Default, PipeOptions.Default);
var connection = new HttpConnectionContext("foo", connectionToken: null, LoggerFactory.CreateLogger("HttpConnectionContext1"))
{
Transport = pair.Transport,
Application = pair.Application,
};
using (var feature = new TestWebSocketConnectionFeature())
{
var connectionContext = new HttpConnectionContext(string.Empty, connectionToken: null, LoggerFactory.CreateLogger("HttpConnectionContext2"));
var ws = new WebSocketsServerTransport(new WebSocketOptions(), connection.Application, connectionContext, LoggerFactory);
// Give the server socket to the transport and run it
var transport = ws.ProcessSocketAsync(await feature.AcceptAsync());
// Run the client socket
var client = feature.Client.ExecuteAndCaptureFramesAsync();
// Send a frame, then close
await feature.Client.SendAsync(
buffer : new ArraySegment <byte>(Encoding.UTF8.GetBytes("Hello")),
messageType : (WebSocketMessageType)Enum.Parse(typeof(WebSocketMessageType), webSocketMessageType),
endOfMessage : true,
cancellationToken : CancellationToken.None);
await feature.Client.CloseAsync(WebSocketCloseStatus.NormalClosure, "", CancellationToken.None);
var result = await connection.Transport.Input.ReadAsync();
var buffer = result.Buffer;
Assert.Equal("Hello", Encoding.UTF8.GetString(buffer.ToArray()));
connection.Transport.Input.AdvanceTo(buffer.End);
connection.Transport.Output.Complete();
// The transport should finish now
await transport;
// The connection should close after this, which means the client will get a close frame.
var clientSummary = await client;
Assert.Equal(WebSocketCloseStatus.NormalClosure, clientSummary.CloseResult.CloseStatus);
}
}
}
public async Task ServerGracefullyClosesWhenClientSendsCloseFrameThenApplicationEnds()
{
using (StartVerifiableLog())
{
var pair = DuplexPipe.CreateConnectionPair(PipeOptions.Default, PipeOptions.Default);
var connection = new HttpConnectionContext("foo", connectionToken: null, LoggerFactory.CreateLogger(nameof(HttpConnectionContext)))
{
Transport = pair.Transport,
Application = pair.Application,
};
using (var feature = new TestWebSocketConnectionFeature())
{
var options = new WebSocketOptions
{
// We want to verify behavior without timeout affecting it
CloseTimeout = TimeSpan.FromSeconds(20)
};
var connectionContext = new HttpConnectionContext(string.Empty, null, null);
var ws = new WebSocketsServerTransport(options, connection.Application, connectionContext, LoggerFactory);
var serverSocket = await feature.AcceptAsync();
// Give the server socket to the transport and run it
var transport = ws.ProcessSocketAsync(serverSocket);
// Run the client socket
var client = feature.Client.ExecuteAndCaptureFramesAsync();
await feature.Client.CloseOutputAsync(WebSocketCloseStatus.NormalClosure, null, CancellationToken.None).OrTimeout();
// close the client to server channel
connection.Transport.Output.Complete();
_ = await client.OrTimeout();
await transport.OrTimeout();
Assert.Equal(WebSocketCloseStatus.NormalClosure, serverSocket.CloseStatus);
}
}
}
public async Task WebSocketTransportSetsMessageTypeBasedOnTransferFormatFeature(TransferFormat transferFormat, string expectedMessageType)
{
using (StartVerifiableLog())
{
var pair = DuplexPipe.CreateConnectionPair(PipeOptions.Default, PipeOptions.Default);
var connection = new HttpConnectionContext("foo", connectionToken: null, LoggerFactory.CreateLogger("HttpConnectionContext1"))
{
Transport = pair.Transport,
Application = pair.Application,
};
using (var feature = new TestWebSocketConnectionFeature())
{
var connectionContext = new HttpConnectionContext(string.Empty, connectionToken: null, LoggerFactory.CreateLogger("HttpConnectionContext2"));
connectionContext.ActiveFormat = transferFormat;
var ws = new WebSocketsServerTransport(new WebSocketOptions(), connection.Application, connectionContext, LoggerFactory);
// Give the server socket to the transport and run it
var transport = ws.ProcessSocketAsync(await feature.AcceptAsync());
// Run the client socket
var client = feature.Client.ExecuteAndCaptureFramesAsync();
// Write to the output channel, and then complete it
await connection.Transport.Output.WriteAsync(Encoding.UTF8.GetBytes("Hello"));
connection.Transport.Output.Complete();
// The client should finish now, as should the server
var clientSummary = await client;
await feature.Client.CloseAsync(WebSocketCloseStatus.NormalClosure, "", CancellationToken.None);
await transport;
Assert.Equal(1, clientSummary.Received.Count);
Assert.True(clientSummary.Received[0].EndOfMessage);
Assert.Equal((WebSocketMessageType)Enum.Parse(typeof(WebSocketMessageType), expectedMessageType), clientSummary.Received[0].MessageType);
Assert.Equal("Hello", Encoding.UTF8.GetString(clientSummary.Received[0].Buffer));
}
}
}