| private ConnectAsync ( [ endpointPair ) : IAsyncAction | ||
| endpointPair | [ | |
| return | IAsyncAction | |
/// <summary>
/// Gets accurate time using the NTP protocol with default timeout of 45 seconds.
/// </summary>
/// <param name="timeout">Operation timeout.</param>
/// <returns>Network accurate <see cref="DateTime"/> value.</returns>
public async Task<DateTime> GetNetworkTimeAsync(TimeSpan timeout)
{
using (var socket = new DatagramSocket())
using (var ct = new CancellationTokenSource(timeout))
{
ct.Token.Register(() => _resultCompletionSource.TrySetCanceled());
socket.MessageReceived += OnSocketMessageReceived;
//The UDP port number assigned to NTP is 123
await socket.ConnectAsync(new HostName("pool.ntp.org"), "123");
using (var writer = new DataWriter(socket.OutputStream))
{
// NTP message size is 16 bytes of the digest (RFC 2030)
var ntpBuffer = new byte[48];
// Setting the Leap Indicator,
// Version Number and Mode values
// LI = 0 (no warning)
// VN = 3 (IPv4 only)
// Mode = 3 (Client Mode)
ntpBuffer[0] = 0x1B;
writer.WriteBytes(ntpBuffer);
await writer.StoreAsync();
var result = await _resultCompletionSource.Task;
return result;
}
}
}
private async void btnConnect_Click(object sender, RoutedEventArgs e)
{
Windows.Networking.Sockets.DatagramSocket socket = new Windows.Networking.Sockets.DatagramSocket();
socket.MessageReceived += Socket_MessageReceived;
//You can use any port that is not currently in use already on the machine. We will be using two separate and random
//ports for the client and server because both the will be running on the same machine.
string serverPort = "8001";
string clientPort = "8002";
//Because we will be running the client and server on the same machine, we will use localhost as the hostname.
Windows.Networking.HostName serverHost = new Windows.Networking.HostName("127.0.0.1");
//Bind the socket to the clientPort so that we can start listening for UDP messages from the UDP echo server.
await socket.BindServiceNameAsync(clientPort);
await socket.ConnectAsync(serverHost, serverPort);
//Write a message to the UDP echo server.
Stream streamOut = (await socket.GetOutputStreamAsync(serverHost, serverPort)).AsStreamForWrite();
StreamWriter writer = new StreamWriter(streamOut);
string message = "I'm the message from client!";
await writer.WriteLineAsync(message);
await writer.FlushAsync();
}
public override async void Start()
{
if (_Started)
return;
_SequenceNumber = 1;
try
{
// Connect to the Drone
udpClient = new DatagramSocket();
await udpClient.BindServiceNameAsync(_ServiceName);
await udpClient.ConnectAsync(new HostName(DroneClient.Host), _ServiceName);
udpWriter = new DataWriter(udpClient.OutputStream);
udpWriter.WriteByte(1);
await udpWriter.StoreAsync();
_Timer = ThreadPoolTimer.CreatePeriodicTimer(new TimerElapsedHandler(timerElapsedHandler), TimeSpan.FromMilliseconds(25));
_Started = true;
}
catch (Exception)
{
Stop();
}
}
private async void ConnectSocket_Click(object sender, RoutedEventArgs e)
{
if (string.IsNullOrEmpty(ServiceNameForConnect.Text))
{
_rootPage.NotifyUser("Please provide a service name.", NotifyType.ErrorMessage);
return;
}
HostName hostName;
try
{
hostName = new HostName(HostNameForConnect.Text);
}
catch (ArgumentException)
{
_rootPage.NotifyUser("Error: Invalid host name.", NotifyType.ErrorMessage);
return;
}
if (CoreApplication.Properties.ContainsKey("clientSocket"))
{
_rootPage.NotifyUser("This step has already been executed. Please move to the next one.",
NotifyType.ErrorMessage);
return;
}
// クライアントソケットの作成
var socket = new Windows.Networking.Sockets.DatagramSocket();
if (DontFragment.IsOn)
{
// IPフラグメンテーションを許可しない
socket.Control.DontFragment = true;
}
socket.MessageReceived += MessageReceived;
CoreApplication.Properties.Add("clientSocket", socket);
_rootPage.NotifyUser("Connecting to: " + HostNameForConnect.Text, NotifyType.StatusMessage);
try
{
// サーバソケットに接続しにいく
await socket.ConnectAsync(hostName, ServiceNameForConnect.Text);
_rootPage.NotifyUser("Connected", NotifyType.StatusMessage);
CoreApplication.Properties.Add("connected", null);
}
catch (Exception exception)
{
if (SocketError.GetStatus(exception.HResult) == SocketErrorStatus.Unknown)
{
throw;
}
_rootPage.NotifyUser("Connect failed with error: " + exception.Message, NotifyType.ErrorMessage);
}
}
public void Start()
{
_socket = new DatagramSocket();
_socket.Control.DontFragment = true;
_socket.ConnectAsync(new HostName("255.255.255.255"), "19227").AsTask().Wait();
_outputStream = _socket.OutputStream.AsStreamForWrite();
_timer.Change(0, Timeout.Infinite);
}
private async Task SendResponseAsync(HostName target, DiscoveryResponse response)
{
var buffer = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(response));
using (var socket = new DatagramSocket())
{
await socket.ConnectAsync(target, DEFAULT_PORT.ToString());
await socket.OutputStream.WriteAsync(buffer.AsBuffer());
await socket.OutputStream.FlushAsync();
}
}
public async void ConnectedToServer()
{
// 资料来自 http://www.devdiv.com/forum.php?mod=viewthread&tid=134558
//创建一个本地连接
udpSocket = new DatagramSocket();
//创建新的hostName
HostName remoteHost = new HostName("168.63.151.29");
//打开一个至远程主机的连接，后面是远程端口号。。
await udpSocket.ConnectAsync(remoteHost, "3000");
}
public async Task<bool> StartupAsync(string serverIP, int serverPort)
{
await ShutdownAsync();
IsRunning = true;
messageReceiptAwaiters = new Stack<TaskCompletionSource<byte[]>>();
socket = new DatagramSocket();
socket.MessageReceived += socket_MessageReceived;
await socket.ConnectAsync(new HostName(serverIP), serverPort.ToString());
return true;
}
public override async void Start()
{
udpClient = new DatagramSocket();
// Connect To Drone
udpClient.MessageReceived += MessageReceived;
await udpClient.BindServiceNameAsync(_ServiceName);
await udpClient.ConnectAsync(new HostName(DroneClient.Host), _ServiceName);
udpWriter = new DataWriter(udpClient.OutputStream);
SendKeepAliveSignal();
_TimeoutStopWatch = Stopwatch.StartNew();
}
public static async void SynchronizeDeviceTime()
{
DatagramSocket socket = new DatagramSocket();
socket.MessageReceived += DatagramSocket_MessageReceived;
await socket.ConnectAsync(new HostName("time.windows.com"), "123");
using (DataWriter writer = new DataWriter(socket.OutputStream))
{
byte[] container = new byte[48];
container[0] = 0x1B;
writer.WriteBytes(container);
await writer.StoreAsync();
}
}
/// <summary>
/// 在此页将要在 Frame 中显示时进行调用。
/// </summary>
/// <param name="e">描述如何访问此页的事件数据。Parameter
/// 属性通常用于配置页。</param>
async protected override void OnNavigatedTo(NavigationEventArgs e)
{
// 创建一个新的socket实例，并绑定到一个本地端口上
DatagramSocket udpSocket = new DatagramSocket();
await udpSocket.BindServiceNameAsync("3721");
// 打开一个连接到远程主机上
HostName remoteHost = new HostName("192.168.1.100");
await udpSocket.ConnectAsync(remoteHost, "3721");
// 将一个字符串以UDP数据包形式发送到远程主机上
DataWriter udpWriter = new DataWriter(udpSocket.OutputStream);
udpWriter.WriteString("这里是破船之家");
await udpWriter.StoreAsync();
}
/// <summary>
/// connect to server
/// </summary>
/// <param name="_host">target ip address</param>
/// <param name="_axisPort">axis channel port</param>
/// <param name="_ctlPort">control channel port</param>
/// <param name="_trackPort">track channel port</param>
/// <returns></returns>
public async Task connect(string _host,int _axisPort,int _ctlPort, int _trackPort)
{
host = _host; trackPort = _trackPort;
AxisBuffer = new byte[AxisMsgSize];
CtlBuffer = new byte[CtlMsgSize];
trackBuffer = new byte[trackMsgSize];
//connecting
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
axisSocket = new DatagramSocket();
ctlSocket = new DatagramSocket();
trackSocket = new DatagramSocket();
HostName hostname = new HostName(host);
await axisSocket.ConnectAsync(hostname, _axisPort.ToString());
await ctlSocket.ConnectAsync(hostname, _ctlPort.ToString());
await trackSocket.ConnectAsync(hostname, trackPort.ToString());
connected = true;
}
async partial void SendTimeRequest()
{
var socket = new Windows.Networking.Sockets.DatagramSocket();
AsyncUdpResult asyncResult = null;
try
{
var buffer = new byte[48];
buffer[0] = 0x1B;
socket.MessageReceived += Socket_Completed_Receive;
asyncResult = new AsyncUdpResult(socket);
await socket.ConnectAsync(new Windows.Networking.HostName(_ServerAddress), "123").AsTask().ConfigureAwait(false);
using (var udpWriter = new DataWriter(socket.OutputStream))
{
udpWriter.WriteBytes(buffer);
await udpWriter.StoreAsync().AsTask().ConfigureAwait(false);
udpWriter.WriteBytes(buffer);
await udpWriter.StoreAsync().AsTask().ConfigureAwait(false);
asyncResult.Wait(OneSecond);
}
}
catch (Exception ex)
{
try
{
if (socket != null)
{
ExecuteWithSuppressedExceptions(() => socket.MessageReceived -= this.Socket_Completed_Receive);
ExecuteWithSuppressedExceptions(() => socket.Dispose());
}
}
finally
{
OnErrorOccurred(ExceptionToNtpNetworkException(ex));
}
}
finally
{
asyncResult?.Dispose();
}
}
async partial void SendTimeRequest()
{
var socket = new Windows.Networking.Sockets.DatagramSocket();
AsyncUdpResult asyncResult = null;
try
{
var buffer = new byte[48];
buffer[0] = 0x1B;
socket.MessageReceived += Socket_Completed_Receive;
asyncResult = new AsyncUdpResult(socket);
await socket.ConnectAsync(new Windows.Networking.HostName(_ServerAddress), "123").AsTask().ConfigureAwait(false);
using (var udpWriter = new DataWriter(socket.OutputStream))
{
udpWriter.WriteBytes(buffer);
await udpWriter.StoreAsync().AsTask().ConfigureAwait(false);
udpWriter.WriteBytes(buffer);
await udpWriter.StoreAsync().AsTask().ConfigureAwait(false);
asyncResult.Wait(OneSecond);
}
}
catch (Exception ex)
{
try
{
if (socket != null)
{
ExecuteWithSuppressedExceptions(() => socket.MessageReceived -= this.Socket_Completed_Receive);
ExecuteWithSuppressedExceptions(() => socket.Dispose());
}
}
finally
{
OnErrorOccurred(ExceptionToNtpNetworkException(ex));
}
}
finally
{
asyncResult?.Dispose();
}
}
public static async Task WakeAsync(HostName endPoint, int port, byte[] macAddress)
{
var packet = new List<byte>();
for (var i = 0; i < 6; i++) // Trailer of 6 FF packets
packet.Add(0xFF);
for (var i = 0; i < 16; i++) // Repeat 16 times the MAC address
packet.AddRange(macAddress);
using (var socket = new DatagramSocket())
{
await socket.ConnectAsync(endPoint, port.ToString());
var stream = socket.OutputStream;
using (var writer = new DataWriter(stream))
{
writer.WriteBytes(packet.ToArray());
await writer.StoreAsync();
}
}
}
public async void Locate()
{
DatagramSocket socket = new DatagramSocket();
//socket.Control.DontFragment = true;
socket.MessageReceived += MessageReceived;
try
{
//// Connect to the server (in our case the listener we created in previous step).
await socket.ConnectAsync(new HostName("255.255.255.255"), "8888");
//await socket.ConnectAsync(new HostName("192.168.1.177"), "8888");
//rootPage.NotifyUser("Connected", NotifyType.StatusMessage);
// Mark the socket as connected. Set the value to null, as we care only about the fact that the property is set.
//CoreApplication.Properties.Add("connected", null);
DataWriter udpWriter = new DataWriter(socket.OutputStream);
udpWriter.WriteString("SNC");
await udpWriter.StoreAsync();
//byte[] msg = new byte[] { 35, 36, 37 };
//IOutputStream stream = await socket.GetOutputStreamAsync(new HostName("255.255.255.255"), "8888");
//await stream.WriteAsync(BytesToBuffer(msg));
}
catch (Exception exception)
{
// If this is an unknown status it means that the error is fatal and retry will likely fail.
if (SocketError.GetStatus(exception.HResult) == SocketErrorStatus.Unknown)
{
throw;
}
//rootPage.NotifyUser("Connect failed with error: " + exception.Message, NotifyType.ErrorMessage);
}
}
public override async void Start()
{
if (_Started)
return;
_SequenceNumber = 1;
// Connect To Drone
udpClient = new DatagramSocket();
await udpClient.BindServiceNameAsync(_ServiceName);
await udpClient.ConnectAsync(new HostName(DroneClient.Host), _ServiceName);
udpWriter = new DataWriter(udpClient.OutputStream);
//string path = string.Format("AR.Drone-CommandHistory_{0:yyyy-MM-dd-HH-mm}.txt", DateTime.Now);
//commandHistoryFile = await ApplicationData.Current.TemporaryFolder.CreateFileAsync(path, CreationCollisionOption.ReplaceExisting);
// Write first message
//byte[] firstMessage = BitConverter.GetBytes(1);
//WriteString(firstMessage.ToString());
udpWriter.WriteByte(1);
await udpWriter.StoreAsync();
_Timer = ThreadPoolTimer.CreatePeriodicTimer(new TimerElapsedHandler(timerElapsedHandler), TimeSpan.FromMilliseconds(25));
_Started = true;
}
private async Task SendIdentifierToDevice(HostName remoteAddress)
{
using (var socket = new DatagramSocket())
{
await socket.ConnectAsync(remoteAddress, Settings.RemoteServiceName);
using (var dataStream = socket.OutputStream.AsStreamForWrite())
{
var identifier = DeviceRegistration.Current.DeviceIdentifier.ToString();
var data = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "{0}:{1}",
Protocol.TickTack.SendDeviceInfoCommand, identifier));
dataStream.Write(data, 0, data.Length);
await dataStream.FlushAsync();
Log($"TACK sent to {remoteAddress} - device identifier: {identifier}");
}
}
}
/// <summary>
/// Connects the client to a given remote address and port.
/// </summary>
async public void Connect()
{
if(_udpClient != null) Close();
_udpClient = new DatagramSocket();
writer = new DataWriter(_udpClient.OutputStream);
try
{
HostName hn = new HostName(_ipAddress);
await _udpClient.ConnectAsync(hn,_port);
}
catch
{
throw new Exception(String.Format("Can't create client at IP address {0} and port {1}.", _ipAddress,_port));
}
}
/// <summary>
/// This is the click handler for the 'ConnectSocket' button.
/// </summary>
/// <param name="sender">Object for which the event was generated.</param>
/// <param name="e">Event's parameters.</param>
private async void ConnectSocket_Click(object sender, RoutedEventArgs e)
{
if (String.IsNullOrEmpty(ServiceNameForConnect.Text))
{
rootPage.NotifyUser("Please provide a service name.", NotifyType.ErrorMessage);
return;
}
// By default 'HostNameForConnect' is disabled and host name validation is not required. When enabling the
// text box validating the host name is required since it was received from an untrusted source (user
// input). The host name is validated by catching ArgumentExceptions thrown by the HostName constructor for
// invalid input.
HostName hostName;
try
{
hostName = new HostName(HostNameForConnect.Text);
}
catch (ArgumentException)
{
rootPage.NotifyUser("Error: Invalid host name.", NotifyType.ErrorMessage);
return;
}
if (CoreApplication.Properties.ContainsKey("clientSocket"))
{
rootPage.NotifyUser(
"This step has already been executed. Please move to the next one.",
NotifyType.ErrorMessage);
return;
}
DatagramSocket socket = new DatagramSocket();
if (DontFragment.IsOn)
{
// Set the IP DF (Don't Fragment) flag.
// This won't have any effect when running both client and server on localhost.
// Refer to the DatagramSocketControl class' MSDN documentation for the full list of control options.
socket.Control.DontFragment = true;
}
socket.MessageReceived += MessageReceived;
// Save the socket, so subsequent steps can use it.
CoreApplication.Properties.Add("clientSocket", socket);
rootPage.NotifyUser("Connecting to: " + HostNameForConnect.Text, NotifyType.StatusMessage);
try
{
// Connect to the server (by default, the listener we created in the previous step).
await socket.ConnectAsync(hostName, ServiceNameForConnect.Text);
rootPage.NotifyUser("Connected", NotifyType.StatusMessage);
// Mark the socket as connected. Set the value to null, as we care only about the fact that the
// property is set.
CoreApplication.Properties.Add("connected", null);
}
catch (Exception exception)
{
// If this is an unknown status it means that the error is fatal and retry will likely fail.
if (SocketError.GetStatus(exception.HResult) == SocketErrorStatus.Unknown)
{
throw;
}
rootPage.NotifyUser("Connect failed with error: " + exception.Message, NotifyType.ErrorMessage);
}
}
public async static void ConnectedToServer()
{
// 资料来自 http://www.devdiv.com/forum.php?mod=viewthread&tid=134558
//创建一个本地连接
udpSocket = new DatagramSocket();
//绑定本地端口,服务器想要接收消息应该在这个端口。。
await udpSocket.BindServiceNameAsync("5556");
//创建新的hostName
HostName remoteHost = new HostName("192.168.1.1");
//打开一个至远程主机的连接，后面是远程端口号。。
await udpSocket.ConnectAsync(remoteHost, "5556");
}
//
// UDP send.
//
private async void UdpSend_Click_1(object sender, RoutedEventArgs e)
{
DatagramSocket sendSocket = new DatagramSocket();
// Even when we do not except any response, this handler is called if any error occurrs.
sendSocket.MessageReceived += OnMessageReceived;
try
{
await sendSocket.ConnectAsync(new HostName("foohost"), "2704");
// DatagramSocket.ConnectAsync() vs DatagramSocket.GetOutputStreamAsync()?
// Use DatagramSocket.GetOutputStreamAsync() if datagrams are sent to multiple
// GetOutputStreamAsync() does DNS resolution first.
// If remote host does not exist, "No such host is known. (Exception from HRESULT: 0x80072AF9)"
// exception is thrown.
// If remote host is not listening on the specified host, "An existing connection was forcibly
// closed by the remote host. (Exception from HRESULT: 0x80072746)" exception is thrown.
string message = "¡Hello, I am the new guy in the network!";
DataWriter writer = new DataWriter(sendSocket.OutputStream);
// This is useless in this sample. Just a friendly remainder.
uint messageLength = writer.MeasureString(message);
writer.WriteString(message);
uint bytesWritten = await writer.StoreAsync();
Debug.Assert(bytesWritten == messageLength);
DisplayOutput(UdpSendOutput, "Message sent: " + message);
}
catch (Exception ex)
{
DisplayOutput(UdpSendOutput, ex.ToString());
}
}
private async void received_Click(object sender, RoutedEventArgs e)
{
DatagramSocket datagramSocket = new DatagramSocket();
datagramSocket.MessageReceived+=datagramSocket_MessageReceived2;
await datagramSocket.ConnectAsync(new HostName("localhost"), "22112");
}
/// <summary>
/// Gets the current date and time from the specified
/// NTP server.
/// </summary>
/// <param name="server">Specifies the host name or IP address
/// of the NTP server to call.</param>
/// <returns>Returns a DateTime instance containing the date and time
/// obtained from the NTP server.</returns>
public async Task<DateTimeOffset?> GetAsync(string server)
{
DateTimeOffset? returnValue = null;
// ***
// *** Create a DatagramSocket for the UDP message
// ***
DatagramSocket socket = new DatagramSocket();
// ***
// ***
// ***
ManualResetEvent _clientDone = new ManualResetEvent(false);
// ***
// *** Connect the callback for the response data
// ***
socket.MessageReceived += (s, a) =>
{
DataReader reader = a.GetDataReader();
byte[] data = new byte[48];
reader.ReadBytes(data);
returnValue = this.ConvertDateTime(data);
// ***
// *** Signal that the callback is complete
// ***
_clientDone.Set();
};
// ***
// *** Get the host name instance and connect
// *** the socket.
// ***
HostName serverHost = new HostName(server);
await socket.ConnectAsync(serverHost, PORT);
// ***
// *** Get a data writer for the network stream
// ***
DataWriter dataWriter = new DataWriter(socket.OutputStream);
// ***
// *** RFC 2030
// ***
byte[] ntpData = new byte[48];
ntpData[0] = 0x1B;
dataWriter.WriteBytes(ntpData);
// ***
// *** Send the data
// ***
uint result = await dataWriter.StoreAsync();
// ***
// *** Wait for the callback to complete
// ***
if (!_clientDone.WaitOne(this.Timeout))
{
throw new TimeoutException();
}
return returnValue;
}
// This will fire when the connected peer attempts to open a port for this connection
// The peer should start a stream socket listener (for TCP)
private async void OnRemotePortAdded(WiFiDirectServiceSession sender, WiFiDirectServiceRemotePortAddedEventArgs args)
{
try
{
ThrowIfDisposed();
var endpointPairCollection = args.EndpointPairs;
var protocol = args.Protocol;
if (endpointPairCollection.Count == 0)
{
manager.NotifyUser("No endpoint pairs for remote port added event", NotifyType.ErrorMessage);
return;
}
manager.NotifyUser(String.Format("{0} Port {1} Added by remote peer",
(protocol == WiFiDirectServiceIPProtocol.Tcp) ? "TCP" : ((protocol == WiFiDirectServiceIPProtocol.Udp) ? "UDP" : "???"),
endpointPairCollection[0].RemoteServiceName
),
NotifyType.StatusMessage
);
SocketWrapper socketWrapper = null;
if (args.Protocol == WiFiDirectServiceIPProtocol.Tcp)
{
// Connect to the stream socket listener
StreamSocket streamSocket = new StreamSocket();
socketWrapper = new SocketWrapper(manager, streamSocket, null);
manager.NotifyUser("Connecting to stream socket...", NotifyType.StatusMessage);
await streamSocket.ConnectAsync(endpointPairCollection[0]);
// Start receiving messages recursively
var rcv = socketWrapper.ReceiveMessageAsync();
manager.NotifyUser("Stream socket connected", NotifyType.StatusMessage);
}
else if (args.Protocol == WiFiDirectServiceIPProtocol.Udp)
{
// Connect a socket over UDP
DatagramSocket datagramSocket = new DatagramSocket();
socketWrapper = new SocketWrapper(manager, null, datagramSocket);
manager.NotifyUser("Connecting to datagram socket...", NotifyType.StatusMessage);
await datagramSocket.ConnectAsync(endpointPairCollection[0]);
manager.NotifyUser("Datagram socket connected", NotifyType.StatusMessage);
}
else
{
manager.NotifyUser("Bad protocol for remote port added event", NotifyType.ErrorMessage);
return;
}
socketList.Add(socketWrapper);
// Update manager so UI can add to list
manager.AddSocket(socketWrapper);
}
catch (Exception ex)
{
manager.NotifyUser("OnRemotePortAdded Failed: " + ex.Message, NotifyType.ErrorMessage);
}
}
private async void ConnectToOSC_Click(object sender, RoutedEventArgs e)
{
socket = new DatagramSocket();
socket.MessageReceived += RecieveOSC;
await socket.ConnectAsync(new HostName(host.Text),port.Text);
writer = new DataWriter(socket.OutputStream);
}
/// <summary>
/// 连接Udp服务
/// </summary>
private async void connectButton_Click(object sender, RoutedEventArgs e)
{
hostName = new HostName(hostIP.Text);
DatagramSocket socket = new DatagramSocket();
CoreApplication.Properties.Add("clientSocket", socket);
try
{
await socket.ConnectAsync(hostName, hostPort.Text);
CoreApplication.Properties.Add("connected", null);
}
catch (Exception ee)
{
}
finally
{
connectButton.IsEnabled = false;
_accelerometer = Accelerometer.GetDefault();
if (_accelerometer != null)
{
// Select a report interval that is both suitable for the purposes of the app and supported by the sensor.
// This value will be used later to activate the sensor.
// send();
//}
uint minReportInterval = _accelerometer.MinimumReportInterval;
_desiredReportInterval = minReportInterval > 16 ? minReportInterval : 16;
_accelerometer.ReportInterval = _desiredReportInterval;
_accelerometer.ReadingChanged += new TypedEventHandler<Accelerometer, AccelerometerReadingChangedEventArgs>(ReadingChanged);
readyToSend();
}
else
{
readyToSend();
MessageDialog msg = new MessageDialog("No accelerometer found");
msg.ShowAsync();
}
}
}