public void PingAdversary(ProximityDevice device, NotifyNfcReady notify)
{
if (subscribeId != -1)
{
proximityDevice.StopSubscribingForMessage(subscribeId);
subscribeId = -1;
}
if (publishId != -1)
{
proximityDevice.StopPublishingMessage(publishId);
publishId = -1;
}
if (state == NfcManager.ProtoState.Busy)
{
return;
}
state = NfcManager.ProtoState.NotReady;
notifyReady = notify;
initialMessage.devicetime = random.NextDouble();
MemoryStream stream = new MemoryStream();
DataContractSerializer serializer = new DataContractSerializer(initialMessage.GetType());
serializer.WriteObject(stream, initialMessage);
stream.Position = 0;
var dataWriter = new DataWriter();
dataWriter.WriteBytes(stream.GetBuffer());
proximityDevice = device;
publishId = proximityDevice.PublishBinaryMessage("Windows.CarTrumps", dataWriter.DetachBuffer());
subscribeId = proximityDevice.SubscribeForMessage("Windows.CarTrumps", OnMessageReceived);
}
private void OnMessageReceived(ProximityDevice sender, ProximityMessage message)
{
if (state == NfcManager.ProtoState.Ready)
{
return;
}
state = NfcManager.ProtoState.NotReady;
try
{
String msg = message.DataAsString.Substring(0, message.DataAsString.IndexOf('\0'));
MemoryStream stream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(msg));
DataContractSerializer serializer = new DataContractSerializer(typeof(InitialMessage));
stream.Position = 0;
InitialMessage adversaryTime = (InitialMessage)serializer.ReadObject(stream);
isMaster = (initialMessage.devicetime > adversaryTime.devicetime);
state = NfcManager.ProtoState.Ready;
proximityDevice.StopSubscribingForMessage(subscribeId);
proximityDevice.StopPublishingMessage(publishId);
subscribeId = -1;
publishId = -1;
notifyReady();
}
catch (SerializationException)
{
}
}
public void PingAdversary(ProximityDevice device, NotifyNfcReady notify)
{
if (subscribeId != -1)
{
proximityDevice.StopSubscribingForMessage(subscribeId);
subscribeId = -1;
}
if (publishId != -1)
{
proximityDevice.StopPublishingMessage(publishId);
publishId = -1;
}
if (state == NfcManager.ProtoState.Busy)
{
return;
}
state = NfcManager.ProtoState.NotReady;
notifyReady = notify;
initialMessage.devicetime = random.NextDouble();
MemoryStream stream = new MemoryStream();
DataContractSerializer serializer = new DataContractSerializer(initialMessage.GetType());
serializer.WriteObject(stream, initialMessage);
stream.Position = 0;
var dataWriter = new DataWriter();
dataWriter.WriteBytes(stream.GetBuffer());
proximityDevice = device;
publishId = proximityDevice.PublishBinaryMessage("Windows.CarTrumps", dataWriter.DetachBuffer());
subscribeId = proximityDevice.SubscribeForMessage("Windows.CarTrumps", OnMessageReceived);
}
private void OnMessageReceived(ProximityDevice sender, ProximityMessage message)
{
if (state == NfcManager.ProtoState.Ready)
{
return;
}
state = NfcManager.ProtoState.NotReady;
try
{
String msg = message.DataAsString.Substring(0, message.DataAsString.IndexOf('\0'));
MemoryStream stream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(msg));
DataContractSerializer serializer = new DataContractSerializer(typeof(InitialMessage));
stream.Position = 0;
InitialMessage adversaryTime = (InitialMessage)serializer.ReadObject(stream);
isMaster = (initialMessage.devicetime > adversaryTime.devicetime);
state = NfcManager.ProtoState.Ready;
proximityDevice.StopSubscribingForMessage(subscribeId);
proximityDevice.StopPublishingMessage(publishId);
subscribeId = -1;
publishId = -1;
notifyReady();
}
catch (SerializationException)
{
}
}
