//当设备应该下线时（对方通知，它自己要下线了），完成这个代理本身的清理工作。
internal void Offline()
{
AppModel.Instance.RemoveDevice(this);
State = DeviceState.OffLine;
try
{
Udp?.Close();
}
catch (Exception ex) { }
}
public async Task ReceiveData(CancellationToken token)
{
StringBuilder sb = new StringBuilder();
while (true)
{
if (token.IsCancellationRequested)
{
UDP.Close();
break;
}
var buffer = await UDP.ReceiveAsync();
var remoteInfo = buffer.RemoteEndPoint;
var bufferAsString = Encoding.UTF8.GetString(buffer.Buffer);
sb.Append(bufferAsString);
if (bufferAsString.EndsWith("\r\n", StringComparison.InvariantCultureIgnoreCase))
{
var fullString = sb.ToString().Trim();
sb.Clear();
fullLineEventHandler.Invoke(this, new UDPJsonLineReceivedEventArgs
{
JSONString = fullString,
RemoteInfo = remoteInfo
});
}
else if (bufferAsString.StartsWith("{", StringComparison.InvariantCultureIgnoreCase) &&
bufferAsString.EndsWith("}", StringComparison.InvariantCultureIgnoreCase) &&
bufferAsString.Contains("Publish"))
{
var fullString = sb.ToString();
var obj = JsonConvert.DeserializeObject(fullString);
sb.Clear();
fullLineEventHandler.Invoke(this, new UDPJsonLineReceivedEventArgs
{
JSON = obj,
JSONString = fullString,
RemoteInfo = remoteInfo
});
}
}
return;
}
public void Close()
{
udp.Close();
state = State.Closed;
}