/// <summary>
/// Gets a snapshot of the security token associated with the device. This call is thread-safe.
/// </summary>
public async Task <string> GetTokenAsync(string iotHubName)
{
if (!IsExpiring)
{
return(_token);
}
await _lock.WaitAsync();
if (!IsExpiring)
{
return(_token);
}
_token = await SafeCreateNewToken(iotHubName);
SharedAccessSignature sas = SharedAccessSignature.Parse(iotHubName, _token);
_expiryTime = sas.ExpiresOn;
_lock.Release();
return(_token);
}
/// <summary>
/// Gets a snapshot of the security token associated with the device. This call is thread-safe.
/// </summary>
public async Task <string> GetTokenAsync(string iotHub)
{
if (!IsExpiring)
{
return(_token);
}
await _lock.WaitAsync().ConfigureAwait(false);
try
{
if (!IsExpiring)
{
return(_token);
}
_token = await SafeCreateNewToken(iotHub, _suggestedTimeToLiveSeconds).ConfigureAwait(false);
SharedAccessSignature sas = SharedAccessSignature.Parse(".", _token);
_expiryTime = sas.ExpiresOn;
UpdateTimeBufferSeconds((int)(_expiryTime - DateTime.UtcNow).TotalSeconds);
#if !NET451
if (Logging.IsEnabled)
{
Logging.GenerateToken(this, _expiryTime);
}
#endif
return(_token);
}
finally
{
_lock.Release();
}
}