protected override bool SendData(byte[] buffer, object state)
{
var message = new MqttApplicationMessageBuilder()
.WithTopic(topic)
.WithPayload(buffer)
.WithExactlyOnceQoS()
.Build();
if (!mqttClient.PublishAsync(message).Wait(TIMEOUT, cancellationToken.Token))
{
var e = new TimeoutException();
Tracker.LogE(TAG, e);
using (new MethodUtils.Unlocker(this)) {
OnExceptionCallback?.Invoke(e);
}
return(false);
}
using (new MethodUtils.Unlocker(this)) {
OnSendCompletedCallback?.Invoke(state);
}
return(true);
}
/// <summary>
/// 异步连接
/// </summary>
private async Task ConnectAsync()
{
while (true)
{
try {
// 连接
await mqttClient.ConnectAsync(options, cancellationToken.Token);
using (new MethodUtils.Unlocker(this)) {
OnConnectedCallback?.Invoke();
}
return;
}
catch (Exception e) {
Tracker.LogNW(TAG, "connect fail");
using (new MethodUtils.Unlocker(this)) {
OnExceptionCallback?.Invoke(e);
}
await Task.Delay(TimeSpan.FromMilliseconds(RETRY_DURATION));
}
}
}
private void OnException(Exception e)
{
using (new MethodUtils.Unlocker(this)) {
OnExceptionCallback?.Invoke(e);
}
}
