public async ValueTask CloseAsync(CloseReason closeReason, string message)
{
var package = new WebSocketPackage();
package.OpCode = OpCode.Close;
var bufferSize = !string.IsNullOrEmpty(message) ? _utf8Encoding.GetMaxByteCount(message.Length) : 0;
bufferSize += 2;
var buffer = GetBuffer(bufferSize);
var len = 2;
BinaryPrimitives.WriteUInt16BigEndian(buffer, (ushort)package.OpCode);
if (!string.IsNullOrEmpty(message))
{
len += _utf8Encoding.GetBytes(message, 0, message.Length, buffer, 2);
}
package.Data = new ReadOnlySequence <byte>(buffer, 0, len);
CloseStatus = new CloseStatus
{
Reason = closeReason,
ReasonText = message
};
await SendAsync(_packageEncoder, package);
State = WebSocketState.CloseSent;
var closeHandshakeResponse = await ReceiveAsync(true);
if (closeHandshakeResponse.OpCode != OpCode.Close)
{
OnError($"Unexpected close package, OpCode: {closeHandshakeResponse.OpCode}");
}
else
{
HandleCloseHandshake(closeHandshakeResponse);
}
await base.CloseAsync();
State = WebSocketState.Closed;
}
public async ValueTask CloseAsync(CloseReason closeReason)
{
await CloseAsync(closeReason, string.Empty);
}