private async Task Echo(GameSocket gameSocket, CancellationToken cancellationToken)
{
var buffer = new byte[1024 * 4];
var result = await gameSocket.ReceiveAsync(new ArraySegment <byte>(buffer), cancellationToken);
while (!result.CloseStatus.HasValue)
{
await gameSocket.SendAsync(new ArraySegment <byte>(buffer, 0, result.Count), result.MessageType, result.EndOfMessage, cancellationToken);
result = await gameSocket.ReceiveAsync(new ArraySegment <byte>(buffer), cancellationToken);
}
await gameSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, cancellationToken);
}
internal Task SendAsync(ArraySegment <byte> buffer, int messageType, bool endOfMessage, CancellationToken cancel)
{
// Remap close messages to CloseAsync. System.Net.GameSockets.GameSocket.SendAsync does not allow close messages.
if (messageType == 0x8)
{
return(RedirectSendToCloseAsync(buffer, cancel));
}
else if (messageType == 0x9 || messageType == 0xA)
{
// Ping & Pong, not allowed by the underlying APIs, silently discard.
return(Task.CompletedTask);
}
return(_gameSocket.SendAsync(buffer, OpCodeToEnum(messageType), endOfMessage, cancel));
}
private async Task Echo(HttpContext context, GameSocket gameSocket, ILogger logger)
{
var buffer = new byte[1024 * 4];
var result = await gameSocket.ReceiveAsync(buffer.AsMemory(), CancellationToken.None);
LogFrame(logger, gameSocket, result, buffer);
while (result.MessageType != GameSocketMessageType.Close)
{
// If the client send "ServerClose", then they want a server-originated close to occur
string content = "<<binary>>";
if (result.MessageType == GameSocketMessageType.Text)
{
content = Encoding.UTF8.GetString(buffer, 0, result.Count);
if (content.Equals("ServerClose"))
{
await gameSocket.CloseAsync(GameSocketCloseStatus.NormalClosure, "Closing from Server", CancellationToken.None);
logger.LogDebug($"Sent Frame Close: {GameSocketCloseStatus.NormalClosure} Closing from Server");
return;
}
else if (content.Equals("ServerAbort"))
{
context.Abort();
}
}
await gameSocket.SendAsync(new ArraySegment <byte>(buffer, 0, result.Count), result.MessageType, result.EndOfMessage, CancellationToken.None);
logger.LogDebug($"Sent Frame {result.MessageType}: Len={result.Count}, Fin={result.EndOfMessage}: {content}");
result = await gameSocket.ReceiveAsync(buffer.AsMemory(), CancellationToken.None);
LogFrame(logger, gameSocket, result, buffer);
}
await gameSocket.CloseAsync(gameSocket.CloseStatus.Value, gameSocket.CloseStatusDescription, CancellationToken.None);
}
