/// <summary>
/// Determines whether the network is available.
/// </summary>
/// <returns>Returns true if the network is available.</returns>
public bool IsAvailable()
{
try
{
//var restClient = ApplicationContext.Current.GetRestClient("hdsi");
var networkInformationService = ApplicationContext.Current.GetService <INetworkInformationService>();
if (networkInformationService.IsNetworkAvailable)
{
if (this.m_lastPing < DateTime.Now.AddSeconds(-30))
{
HdsiServiceClient client = this.GetServiceClient(); //new HdsiServiceClient(restClient);
client.Client.Credentials = new NullCredentials();
client.Client.Description.Endpoint[0].Timeout = 5000;
this.m_lastPing = DateTime.Now;
return(this.IsValidVersion(client) &&
client.Ping());
}
return(true);
}
return(false);
}
catch (Exception e)
{
this.m_tracer.TraceInfo($"Unable to determine network state: {e}");
return(false);
}
}
/// <summary>
/// Get the difference between the server and this device's time
/// </summary>
public TimeSpan GetServerTimeDrift()
{
try
{
//var restClient = ApplicationContext.Current.GetRestClient("hdsi");
var networkInformationService = ApplicationContext.Current.GetService <INetworkInformationService>();
if (networkInformationService.IsNetworkAvailable)
{
HdsiServiceClient client = this.GetServiceClient(); //new HdsiServiceClient(restClient);
client.Client.Credentials = new NullCredentials();
client.Client.Description.Endpoint[0].Timeout = 20000;
var drift = TimeSpan.Zero;
client.Client.Responded += (o, e) =>
{
if (e.Headers != null)
{
if (e.Headers.ContainsKey("X-GeneratedOn"))
{
drift = DateTime.Parse(e.Headers["X-GeneratedOn"]).Subtract(DateTime.Now);
}
else if (DateTime.TryParse(e.Headers["Date"], out var serverTime))
{
drift = serverTime.Subtract(DateTime.Now);
}
}
};
client.Ping();
return(drift);
}
return(TimeSpan.Zero);
}
catch (Exception e)
{
this.m_tracer.TraceError($"Unable to determine server time drift: {e}");
return(TimeSpan.Zero);
}
}
