public async Task ThrowsWhenUnderlyingStreamClosed()
{
var pair = WebSocketPair.Create();
var sendBuffer = new byte[] { 0xde, 0xad, 0xbe, 0xef };
await pair.ServerSocket.SendAsync(new ArraySegment <byte>(sendBuffer), WebSocketMessageType.Binary, endOfMessage : true, cancellationToken : CancellationToken.None);
var receiveBuffer = new byte[32];
var result = await pair.ClientSocket.ReceiveAsync(new ArraySegment <byte>(receiveBuffer), CancellationToken.None);
Assert.Equal(WebSocketMessageType.Binary, result.MessageType);
// Close the client socket's read end
pair.ClientStream.ReadStream.End();
// Assert.Throws doesn't support async :(
try
{
await pair.ClientSocket.ReceiveAsync(new ArraySegment <byte>(receiveBuffer), CancellationToken.None);
// The exception should prevent this line from running
Assert.False(true, "Expected an exception to be thrown!");
}
catch (WebSocketException ex)
{
Assert.Equal(WebSocketError.ConnectionClosedPrematurely, ex.WebSocketErrorCode);
}
}
public async Task ServerToClientBinaryMessage()
{
var pair = WebSocketPair.Create();
var sendBuffer = new byte[] { 0xde, 0xad, 0xbe, 0xef };
await pair.ServerSocket.SendAsync(new ArraySegment <byte>(sendBuffer), WebSocketMessageType.Binary, endOfMessage : true, cancellationToken : CancellationToken.None);
var receiveBuffer = new byte[32];
var result = await pair.ClientSocket.ReceiveAsync(new ArraySegment <byte>(receiveBuffer), CancellationToken.None);
Assert.Equal(WebSocketMessageType.Binary, result.MessageType);
Assert.Equal(sendBuffer, receiveBuffer.Take(result.Count).ToArray());
}
public async Task ServerToClientTextMessage()
{
const string message = "Hello, World!";
var pair = WebSocketPair.Create();
var sendBuffer = Encoding.UTF8.GetBytes(message);
await pair.ServerSocket.SendAsync(new ArraySegment <byte>(sendBuffer), WebSocketMessageType.Text, endOfMessage : true, cancellationToken : CancellationToken.None);
var receiveBuffer = new byte[32];
var result = await pair.ClientSocket.ReceiveAsync(new ArraySegment <byte>(receiveBuffer), CancellationToken.None);
Assert.Equal(WebSocketMessageType.Text, result.MessageType);
Assert.Equal(message, Encoding.UTF8.GetString(receiveBuffer, 0, result.Count));
}