public async Task WebSocketDisposalThrowsOnPeer()
{
// Arrange
RequestDelegate appDelegate = async ctx =>
{
if (ctx.WebSockets.IsWebSocketRequest)
{
var websocket = await ctx.WebSockets.AcceptWebSocketAsync();
websocket.Dispose();
}
};
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(appDelegate);
});
var server = new TestServer(builder);
// Act
var client = server.CreateWebSocketClient();
var clientSocket = await client.ConnectAsync(new System.Uri("http://localhost"), CancellationToken.None);
var buffer = new byte[1024];
await Assert.ThrowsAsync<IOException>(async () => await clientSocket.ReceiveAsync(new System.ArraySegment<byte>(buffer), CancellationToken.None));
clientSocket.Dispose();
}
public async Task WebSocketSubProtocolsWorks()
{
// Arrange
RequestDelegate appDelegate = async ctx =>
{
if (ctx.WebSockets.IsWebSocketRequest)
{
if (ctx.WebSockets.WebSocketRequestedProtocols.Contains("alpha") &&
ctx.WebSockets.WebSocketRequestedProtocols.Contains("bravo"))
{
// according to rfc6455, the "server needs to include the same field and one of the selected subprotocol values"
// however, this isn't enforced by either our server or client so it's possible to accept an arbitrary protocol.
// Done here to demonstrate not "correct" behaviour, simply to show it's possible. Other clients may not allow this.
var websocket = await ctx.WebSockets.AcceptWebSocketAsync("charlie");
await websocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Normal Closure", CancellationToken.None);
}
else
{
var subprotocols = ctx.WebSockets.WebSocketRequestedProtocols.Any()
? string.Join(", ", ctx.WebSockets.WebSocketRequestedProtocols)
: "<none>";
var closeReason = "Unexpected subprotocols: " + subprotocols;
var websocket = await ctx.WebSockets.AcceptWebSocketAsync();
await websocket.CloseAsync(WebSocketCloseStatus.InternalServerError, closeReason, CancellationToken.None);
}
}
};
var builder = new WebHostBuilder()
.Configure(app =>
{
app.Run(appDelegate);
});
var server = new TestServer(builder);
// Act
var client = server.CreateWebSocketClient();
client.SubProtocols.Add("alpha");
client.SubProtocols.Add("bravo");
var clientSocket = await client.ConnectAsync(new Uri("wss://localhost"), CancellationToken.None);
var buffer = new byte[1024];
var result = await clientSocket.ReceiveAsync(new ArraySegment <byte>(buffer), CancellationToken.None);
// Assert
Assert.Equal(WebSocketMessageType.Close, result.MessageType);
Assert.Equal("Normal Closure", result.CloseStatusDescription);
Assert.Equal(WebSocketState.CloseReceived, clientSocket.State);
Assert.Equal("charlie", clientSocket.SubProtocol);
clientSocket.Dispose();
}
public async Task WebSocketAcceptThrowsWhenCancelled()
{
// Arrange
// This logger will attempt to access information from HttpRequest once the HttpContext is created
var logger = new VerifierLogger();
RequestDelegate appDelegate = async ctx =>
{
if (ctx.WebSockets.IsWebSocketRequest)
{
var websocket = await ctx.WebSockets.AcceptWebSocketAsync();
var receiveArray = new byte[1024];
while (true)
{
var receiveResult = await websocket.ReceiveAsync(new System.ArraySegment <byte>(receiveArray), CancellationToken.None);
if (receiveResult.MessageType == WebSocketMessageType.Close)
{
await websocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Normal Closure", CancellationToken.None);
break;
}
else
{
var sendBuffer = new System.ArraySegment <byte>(receiveArray, 0, receiveResult.Count);
await websocket.SendAsync(sendBuffer, receiveResult.MessageType, receiveResult.EndOfMessage, CancellationToken.None);
}
}
}
};
var builder = new WebHostBuilder()
.ConfigureServices(services =>
{
services.AddSingleton <ILogger <IWebHost> >(logger);
})
.Configure(app =>
{
app.Run(appDelegate);
});
var server = new TestServer(builder);
// Act
var client = server.CreateWebSocketClient();
var tokenSource = new CancellationTokenSource();
tokenSource.Cancel();
// Assert
await Assert.ThrowsAnyAsync <OperationCanceledException>(async() => await client.ConnectAsync(new System.Uri("http://localhost"), tokenSource.Token));
}
public async Task WebSocketTinyReceiveGeneratesEndOfMessage()
{
// Arrange
RequestDelegate appDelegate = async ctx =>
{
if (ctx.WebSockets.IsWebSocketRequest)
{
var websocket = await ctx.WebSockets.AcceptWebSocketAsync();
var receiveArray = new byte[1024];
while (true)
{
var receiveResult = await websocket.ReceiveAsync(new System.ArraySegment <byte>(receiveArray), CancellationToken.None);
var sendBuffer = new System.ArraySegment <byte>(receiveArray, 0, receiveResult.Count);
await websocket.SendAsync(sendBuffer, receiveResult.MessageType, receiveResult.EndOfMessage, CancellationToken.None);
}
}
};
var builder = new WebHostBuilder().Configure(app =>
{
app.Run(appDelegate);
});
var server = new TestServer(builder);
// Act
var client = server.CreateWebSocketClient();
var clientSocket = await client.ConnectAsync(new System.Uri("http://localhost"), CancellationToken.None);
var hello = Encoding.UTF8.GetBytes("hello");
await clientSocket.SendAsync(new System.ArraySegment <byte>(hello), WebSocketMessageType.Text, true, CancellationToken.None);
// Assert
var buffer = new byte[1];
for (var i = 0; i < hello.Length; i++)
{
bool last = i == (hello.Length - 1);
var result = await clientSocket.ReceiveAsync(new System.ArraySegment <byte>(buffer), CancellationToken.None);
Assert.Equal(buffer.Length, result.Count);
Assert.Equal(buffer[0], hello[i]);
Assert.Equal(last, result.EndOfMessage);
}
clientSocket.Dispose();
}
public async Task WebSocketWorks()
{
// Arrange
// This logger will attempt to access information from HttpRequest once the HttpContext is created
var logger = new VerifierLogger();
RequestDelegate appDelegate = async ctx =>
{
if (ctx.WebSockets.IsWebSocketRequest)
{
var websocket = await ctx.WebSockets.AcceptWebSocketAsync();
var receiveArray = new byte[1024];
while (true)
{
var receiveResult = await websocket.ReceiveAsync(new System.ArraySegment <byte>(receiveArray), CancellationToken.None);
if (receiveResult.MessageType == WebSocketMessageType.Close)
{
await websocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Normal Closure", CancellationToken.None);
break;
}
else
{
var sendBuffer = new System.ArraySegment <byte>(receiveArray, 0, receiveResult.Count);
await websocket.SendAsync(sendBuffer, receiveResult.MessageType, receiveResult.EndOfMessage, CancellationToken.None);
}
}
}
};
var builder = new WebHostBuilder()
.ConfigureServices(services =>
{
services.AddSingleton <ILogger <IWebHost> >(logger);
})
.Configure(app =>
{
app.Run(appDelegate);
});
var server = new TestServer(builder);
// Act
var client = server.CreateWebSocketClient();
// The HttpContext will be created and the logger will make sure that the HttpRequest exists and contains reasonable values
var clientSocket = await client.ConnectAsync(new System.Uri("http://localhost"), CancellationToken.None);
var hello = Encoding.UTF8.GetBytes("hello");
await clientSocket.SendAsync(new System.ArraySegment <byte>(hello), WebSocketMessageType.Text, true, CancellationToken.None);
var world = Encoding.UTF8.GetBytes("world!");
await clientSocket.SendAsync(new System.ArraySegment <byte>(world), WebSocketMessageType.Binary, true, CancellationToken.None);
await clientSocket.CloseOutputAsync(WebSocketCloseStatus.NormalClosure, "Normal Closure", CancellationToken.None);
// Assert
Assert.Equal(WebSocketState.CloseSent, clientSocket.State);
var buffer = new byte[1024];
var result = await clientSocket.ReceiveAsync(new System.ArraySegment <byte>(buffer), CancellationToken.None);
Assert.Equal(hello.Length, result.Count);
Assert.True(hello.SequenceEqual(buffer.Take(hello.Length)));
Assert.Equal(WebSocketMessageType.Text, result.MessageType);
result = await clientSocket.ReceiveAsync(new System.ArraySegment <byte>(buffer), CancellationToken.None);
Assert.Equal(world.Length, result.Count);
Assert.True(world.SequenceEqual(buffer.Take(world.Length)));
Assert.Equal(WebSocketMessageType.Binary, result.MessageType);
result = await clientSocket.ReceiveAsync(new System.ArraySegment <byte>(buffer), CancellationToken.None);
Assert.Equal(WebSocketMessageType.Close, result.MessageType);
Assert.Equal(WebSocketState.Closed, clientSocket.State);
clientSocket.Dispose();
}
