public void Disconnect()
{
if (BTWriter != null)
{
BTWriter.DetachStream();
BTWriter = null;
}
if (BTDeviceService != null)
{
BTDeviceService.Dispose();
BTDeviceService = null;
}
lock (this)
{
if (BTStreamSocket != null)
{
BTStreamSocket.Dispose();
BTStreamSocket = null;
}
isSocketOpened = false;
}
}
public async Task ConnectBTService()
{
BluetoothDevice btDevice;
if (isSocketOpened)
{
Debug.WriteLine("すでにソケットが開かれています。");
return;
}
// Perform device access checks before trying to get the device.
// First, we check if consent has been explicitly denied by the user.
DeviceAccessStatus accessStatus = DeviceAccessInformation.CreateFromId(BTDeviceInfo.Id).CurrentStatus;
if (accessStatus == DeviceAccessStatus.DeniedByUser)
{
//rootPage.NotifyUser("This app does not have access to connect to the remote device (please grant access in Settings > Privacy > Other Devices", NotifyType.ErrorMessage);
throw new UnauthorizedAccessException("ユーザーによってデバイスへのアクセスが拒否されました。");
}
// If not, try to get the Bluetooth device
try
{
btDevice = await BluetoothDevice.FromIdAsync(BTDeviceInfo.Id);
if (btDevice.ConnectionStatus == BluetoothConnectionStatus.Disconnected)
{
//btDevice.RequestAccessAsync
}
}
catch (Exception ex)
{
//rootPage.NotifyUser(ex.Message, NotifyType.ErrorMessage);
//ResetMainUI();
throw new Exception("Bluetooth Device の取得に失敗しました。", ex);
}
// If we were unable to get a valid Bluetooth device object,
// it's most likely because the user has specified that all unpaired devices
// should not be interacted with.
if (btDevice == null)
{
throw new NullReferenceException("Bluetooth Device が空です。");
}
//Pairされているか確認する
if (btDevice.DeviceInformation.Pairing.IsPaired == false)
{
var status = await btDevice.RequestAccessAsync();
if (status == DeviceAccessStatus.Allowed)
{
Debug.WriteLine("access granted");
}
}
// This should return a list of uncached Bluetooth services (so if the server was not active when paired, it will still be detected by this call
var rfcommServices = await btDevice.GetRfcommServicesForIdAsync(RfcommServiceId.FromUuid(Constants.RfcommChatServiceUuid), BluetoothCacheMode.Uncached);
if (rfcommServices.Services.Count > 0)
{
BTDeviceService = rfcommServices.Services[0];
}
else
{
rfcommServices = await btDevice.GetRfcommServicesAsync();
if (rfcommServices.Services.Count == 0)
{
throw new NullReferenceException("対象のデバイスにBluetoothサービスが一つも見つかりません。正しい機器に接続していない可能性があります。");
}
else
{
foreach (var service in rfcommServices.Services)
{
Debug.WriteLine(service.ConnectionServiceName + ":::" + service.Device.DeviceInformation.Kind.ToString());
if (service.ConnectionServiceName.Contains(Constants.RfcommChatServiceUuid.ToString()))
{
BTDeviceService = service;
break;
}
}
if (BTDeviceService == null)
{
throw new NullReferenceException("対象のデバイスにBluetoothサービスが一つも見つかりません。正しい機器に接続していない可能性があります。");
}
}
}
// Do various checks of the SDP record to make sure you are talking to a device that actually supports the Bluetooth Rfcomm Chat Service
var attributes = await BTDeviceService.GetSdpRawAttributesAsync();
if (!attributes.ContainsKey(Constants.SdpServiceNameAttributeId))
{
throw new NullReferenceException("対象のデバイスにFantasmicサービスが見つかりません。正しい機器に接続していない可能性があります。");
}
var attributeReader = DataReader.FromBuffer(attributes[Constants.SdpServiceNameAttributeId]);
var attributeType = attributeReader.ReadByte();
if (attributeType != Constants.SdpServiceNameAttributeType)
{
throw new NullReferenceException("対象のデバイスにFantasmicサービスが見つかりません。正しい機器に接続していない可能性があります。");
}
var serviceNameLength = attributeReader.ReadByte();
// The Service Name attribute requires UTF-8 encoding.
attributeReader.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
lock (this)
{
BTStreamSocket = new StreamSocket();
}
try
{
await BTStreamSocket.ConnectAsync(BTDeviceService.ConnectionHostName, BTDeviceService.ConnectionServiceName);
//SetChatUI(attributeReader.ReadString(serviceNameLength), bluetoothDevice.Name);
BTWriter = new DataWriter(BTStreamSocket.OutputStream);
BTReader = new DataReader(BTStreamSocket.InputStream);
isSocketOpened = true;
}
catch (Exception ex) when((uint)ex.HResult == 0x80070490) // ERROR_ELEMENT_NOT_FOUND
{
throw new NullReferenceException("ソケットのオープンに失敗しました。対象のデバイスでアプリケーションが起動されていることをご確認ください。(0x80070490: ERROR_ELEMENT_NOT_FOUND)", ex);
}
catch (Exception ex) when((uint)ex.HResult == 0x80072740) // WSAEADDRINUSE
{
throw new InvalidOperationException("ソケットのオープンに失敗しました。対象のデバイスがすでに他のサーバーに接続されている可能性があります。(0x80072740: WSAEADDRINUSE)", ex);
}
catch (Exception ex)
{
throw new InvalidOperationException("ソケットのオープンに失敗しました。", ex);
}
}
