private async void OnSocketConnectionReceived(StreamSocketListener sender, StreamSocketListenerConnectionReceivedEventArgs args)
{
rootPage.NotifyUserFromBackground("Connecting to remote side on L4 layer...", NotifyType.StatusMessage);
StreamSocket serverSocket = args.Socket;
try
{
SocketReaderWriter socketRW = new SocketReaderWriter(serverSocket, rootPage);
socketRW.ReadMessage();
while (true)
{
string sessionId = socketRW.GetCurrentMessage();
if (sessionId != null)
{
rootPage.NotifyUserFromBackground("Connected with remote side on L4 layer", NotifyType.StatusMessage);
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
for (int idx = 0; idx < _connectedDevices.Count; idx++)
{
if (_connectedDevices[idx].DisplayName.Equals("Waiting for client to connect...") == true)
{
ConnectedDevice connectedDevice = _connectedDevices[idx];
_connectedDevices.RemoveAt(idx);
connectedDevice.DisplayName = sessionId;
connectedDevice.SocketRW = socketRW;
_connectedDevices.Add(connectedDevice);
break;
}
}
});
break;
}
await Task.Delay(100);
}
}
catch (Exception ex)
{
rootPage.NotifyUserFromBackground("Connection failed: " + ex.Message, NotifyType.ErrorMessage);
}
}
private async void btnFromId_Click(object sender, RoutedEventArgs e)
{
var discoveredDevice = (DiscoveredDevice)lvDiscoveredDevices.SelectedItem;
if (discoveredDevice == null)
{
rootPage.NotifyUser("No device selected, please select one.", NotifyType.ErrorMessage);
return;
}
rootPage.NotifyUser($"Connecting to {discoveredDevice.DeviceInfo.Name}...", NotifyType.StatusMessage);
if (!discoveredDevice.DeviceInfo.Pairing.IsPaired)
{
if (!await connectionSettingsPanel.RequestPairDeviceAsync(discoveredDevice.DeviceInfo.Pairing))
{
return;
}
}
WiFiDirectDevice wfdDevice = null;
try
{
// IMPORTANT: FromIdAsync needs to be called from the UI thread
wfdDevice = await WiFiDirectDevice.FromIdAsync(discoveredDevice.DeviceInfo.Id);
}
catch (TaskCanceledException)
{
rootPage.NotifyUser("FromIdAsync was canceled by user", NotifyType.ErrorMessage);
return;
}
// Register for the ConnectionStatusChanged event handler
wfdDevice.ConnectionStatusChanged += OnConnectionStatusChanged;
IReadOnlyList <EndpointPair> endpointPairs = wfdDevice.GetConnectionEndpointPairs();
HostName remoteHostName = endpointPairs[0].RemoteHostName;
rootPage.NotifyUser($"Devices connected on L2 layer, connecting to IP Address: {remoteHostName} Port: {Globals.strServerPort}",
NotifyType.StatusMessage);
// Wait for server to start listening on a socket
await Task.Delay(2000);
// Connect to Advertiser on L4 layer
StreamSocket clientSocket = new StreamSocket();
try
{
await clientSocket.ConnectAsync(remoteHostName, Globals.strServerPort);
rootPage.NotifyUser("Connected with remote side on L4 layer", NotifyType.StatusMessage);
}
catch (Exception ex)
{
rootPage.NotifyUser($"Connect operation threw an exception: {ex.Message}", NotifyType.ErrorMessage);
return;
}
SocketReaderWriter socketRW = new SocketReaderWriter(clientSocket, rootPage);
string sessionId = Path.GetRandomFileName();
ConnectedDevice connectedDevice = new ConnectedDevice(sessionId, wfdDevice, socketRW);
ConnectedDevices.Add(connectedDevice);
// The first message sent over the socket is the name of the connection.
await socketRW.WriteMessageAsync(sessionId);
while (await socketRW.ReadMessageAsync() != null)
{
// Keep reading messages
}
}
private async void OnConnectionRequested(WiFiDirectConnectionListener sender, WiFiDirectConnectionRequestedEventArgs connectionEventArgs)
{
try
{
var connectionRequest = connectionEventArgs.GetConnectionRequest();
var tcs = new TaskCompletionSource<bool>();
var dialogTask = tcs.Task;
var messageDialog = new MessageDialog("Connection request received from " + connectionRequest.DeviceInformation.Name, "Connection Request");
// Add commands and set their callbacks; both buttons use the same callback function instead of inline event handlers
messageDialog.Commands.Add(new UICommand("Accept", null, 0));
messageDialog.Commands.Add(new UICommand("Decline", null, 1));
// Set the command that will be invoked by default
messageDialog.DefaultCommandIndex = 1;
// Set the command to be invoked when escape is pressed
messageDialog.CancelCommandIndex = 1;
await Dispatcher.RunAsync(CoreDispatcherPriority.High, async () =>
{
// Show the message dialog
var commandChosen = await messageDialog.ShowAsync();
tcs.SetResult((commandChosen.Label == "Accept") ? true : false);
});
var fProceed = await dialogTask;
if (fProceed == true)
{
var tcsWiFiDirectDevice = new TaskCompletionSource<WiFiDirectDevice>();
var wfdDeviceTask = tcsWiFiDirectDevice.Task;
await Dispatcher.RunAsync(CoreDispatcherPriority.High, async () =>
{
try
{
rootPage.NotifyUser("Connecting to " + connectionRequest.DeviceInformation.Name + "...", NotifyType.StatusMessage);
WiFiDirectConnectionParameters connectionParams = new WiFiDirectConnectionParameters();
connectionParams.GroupOwnerIntent = Convert.ToInt16(txtGOIntent.Text);
// IMPORTANT: FromIdAsync needs to be called from the UI thread
tcsWiFiDirectDevice.SetResult(await WiFiDirectDevice.FromIdAsync(connectionRequest.DeviceInformation.Id, connectionParams));
}
catch (Exception ex)
{
rootPage.NotifyUser("FromIdAsync task threw an exception: " + ex.ToString(), NotifyType.ErrorMessage);
}
});
WiFiDirectDevice wfdDevice = await wfdDeviceTask;
// Register for the ConnectionStatusChanged event handler
wfdDevice.ConnectionStatusChanged += OnConnectionStatusChanged;
await Dispatcher.RunAsync(CoreDispatcherPriority.High, () =>
{
ConnectedDevice connectedDevice = new ConnectedDevice("Waiting for client to connect...", wfdDevice, null);
_connectedDevices.Add(connectedDevice);
});
var EndpointPairs = wfdDevice.GetConnectionEndpointPairs();
_listenerSocket = null;
_listenerSocket = new StreamSocketListener();
_listenerSocket.ConnectionReceived += OnSocketConnectionReceived;
await _listenerSocket.BindEndpointAsync(EndpointPairs[0].LocalHostName, Globals.strServerPort);
rootPage.NotifyUserFromBackground("Devices connected on L2, listening on IP Address: " + EndpointPairs[0].LocalHostName.ToString() +
" Port: " + Globals.strServerPort, NotifyType.StatusMessage);
}
else
{
// Decline the connection request
rootPage.NotifyUserFromBackground("Connection request from " + connectionRequest.DeviceInformation.Name + " was declined", NotifyType.ErrorMessage);
connectionRequest.Dispose();
}
}
catch (Exception ex)
{
rootPage.NotifyUserFromBackground("Connect operation threw an exception: " + ex.Message, NotifyType.ErrorMessage);
}
}
private async void btnFromId_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
if (lvDiscoveredDevices.SelectedItems.Count == 0)
{
rootPage.NotifyUser("No device selected, please select atleast one.", NotifyType.ErrorMessage);
return;
}
var selectedDevices = lvDiscoveredDevices.SelectedItems;
foreach (DiscoveredDevice discoveredDevice in selectedDevices)
{
rootPage.NotifyUser("Connecting to " + discoveredDevice.DeviceInfo.Name + "...", NotifyType.StatusMessage);
try
{
WiFiDirectConnectionParameters connectionParams = new WiFiDirectConnectionParameters();
connectionParams.GroupOwnerIntent = Convert.ToInt16(txtGOIntent.Text);
_cancellationTokenSource = new CancellationTokenSource();
// IMPORTANT: FromIdAsync needs to be called from the UI thread
var wfdDevice = await WiFiDirectDevice.FromIdAsync(discoveredDevice.DeviceInfo.Id, connectionParams).AsTask(_cancellationTokenSource.Token);
// Register for the ConnectionStatusChanged event handler
wfdDevice.ConnectionStatusChanged += OnConnectionStatusChanged;
var endpointPairs = wfdDevice.GetConnectionEndpointPairs();
rootPage.NotifyUser("Devices connected on L2 layer, connecting to IP Address: " + endpointPairs[0].RemoteHostName +
" Port: " + Globals.strServerPort, NotifyType.StatusMessage);
// Wait for server to start listening on a socket
await Task.Delay(2000);
// Connect to Advertiser on L4 layer
StreamSocket clientSocket = new StreamSocket();
await clientSocket.ConnectAsync(endpointPairs[0].RemoteHostName, Globals.strServerPort);
SocketReaderWriter socketRW = new SocketReaderWriter(clientSocket, rootPage);
string sessionId = "Session: " + Path.GetRandomFileName();
ConnectedDevice connectedDevice = new ConnectedDevice(sessionId, wfdDevice, socketRW);
_connectedDevices.Add(connectedDevice);
socketRW.ReadMessage();
socketRW.WriteMessage(sessionId);
rootPage.NotifyUser("Connected with remote side on L4 layer", NotifyType.StatusMessage);
}
catch (TaskCanceledException)
{
rootPage.NotifyUser("FromIdAsync was canceled by user", NotifyType.ErrorMessage);
}
catch (Exception ex)
{
rootPage.NotifyUser("Connect operation threw an exception: " + ex.Message, NotifyType.ErrorMessage);
}
_cancellationTokenSource = null;
}
}
private async void btnFromId_Click(object sender, RoutedEventArgs e)
{
var discoveredDevice = (DiscoveredDevice)lvDiscoveredDevices.SelectedItem;
if (discoveredDevice == null)
{
rootPage.NotifyUser("No device selected, please select one.", NotifyType.ErrorMessage);
return;
}
rootPage.NotifyUser($"Connecting to {discoveredDevice.DeviceInfo.Name}...", NotifyType.StatusMessage);
if (!discoveredDevice.DeviceInfo.Pairing.IsPaired)
{
if (!await connectionSettingsPanel.RequestPairDeviceAsync(discoveredDevice.DeviceInfo.Pairing))
{
return;
}
}
try
{
// IMPORTANT: FromIdAsync needs to be called from the UI thread
var wfdDevice = await WiFiDirectDevice.FromIdAsync(discoveredDevice.DeviceInfo.Id);
// Register for the ConnectionStatusChanged event handler
wfdDevice.ConnectionStatusChanged += OnConnectionStatusChanged;
IReadOnlyList<EndpointPair> endpointPairs = wfdDevice.GetConnectionEndpointPairs();
HostName remoteHostName = endpointPairs[0].RemoteHostName;
rootPage.NotifyUser($"Devices connected on L2 layer, connecting to IP Address: {remoteHostName} Port: {Globals.strServerPort}",
NotifyType.StatusMessage);
// Wait for server to start listening on a socket
await Task.Delay(2000);
// Connect to Advertiser on L4 layer
StreamSocket clientSocket = new StreamSocket();
await clientSocket.ConnectAsync(remoteHostName, Globals.strServerPort);
rootPage.NotifyUser("Connected with remote side on L4 layer", NotifyType.StatusMessage);
SocketReaderWriter socketRW = new SocketReaderWriter(clientSocket, rootPage);
string sessionId = Path.GetRandomFileName();
ConnectedDevice connectedDevice = new ConnectedDevice(sessionId, wfdDevice, socketRW);
ConnectedDevices.Add(connectedDevice);
// The first message sent over the socket is the name of the connection.
await socketRW.WriteMessageAsync(sessionId);
while (await socketRW.ReadMessageAsync() != null)
{
// Keep reading messages
}
}
catch (TaskCanceledException)
{
rootPage.NotifyUser("FromIdAsync was canceled by user", NotifyType.ErrorMessage);
}
catch (Exception ex)
{
rootPage.NotifyUser($"Connect operation threw an exception: {ex.Message}", NotifyType.ErrorMessage);
}
}
private async void OnConnectionRequested(WiFiDirectConnectionListener sender, WiFiDirectConnectionRequestedEventArgs connectionEventArgs)
{
try
{
var connectionRequest = connectionEventArgs.GetConnectionRequest();
var tcs = new TaskCompletionSource <bool>();
var dialogTask = tcs.Task;
var messageDialog = new MessageDialog("Connection request received from " + connectionRequest.DeviceInformation.Name, "Connection Request");
// Add commands and set their callbacks; both buttons use the same callback function instead of inline event handlers
messageDialog.Commands.Add(new UICommand("Accept", null, 0));
messageDialog.Commands.Add(new UICommand("Decline", null, 1));
// Set the command that will be invoked by default
messageDialog.DefaultCommandIndex = 1;
// Set the command to be invoked when escape is pressed
messageDialog.CancelCommandIndex = 1;
await Dispatcher.RunAsync(CoreDispatcherPriority.High, async() =>
{
// Show the message dialog
var commandChosen = await messageDialog.ShowAsync();
tcs.SetResult((commandChosen.Label == "Accept") ? true : false);
});
var fProceed = await dialogTask;
if (fProceed == true)
{
var tcsWiFiDirectDevice = new TaskCompletionSource <WiFiDirectDevice>();
var wfdDeviceTask = tcsWiFiDirectDevice.Task;
await Dispatcher.RunAsync(CoreDispatcherPriority.High, async() =>
{
try
{
rootPage.NotifyUser("Connecting to " + connectionRequest.DeviceInformation.Name + "...", NotifyType.StatusMessage);
WiFiDirectConnectionParameters connectionParams = new WiFiDirectConnectionParameters();
connectionParams.GroupOwnerIntent = Convert.ToInt16(txtGOIntent.Text);
// IMPORTANT: FromIdAsync needs to be called from the UI thread
tcsWiFiDirectDevice.SetResult(await WiFiDirectDevice.FromIdAsync(connectionRequest.DeviceInformation.Id, connectionParams));
}
catch (Exception ex)
{
rootPage.NotifyUser("FromIdAsync task threw an exception: " + ex.ToString(), NotifyType.ErrorMessage);
}
});
WiFiDirectDevice wfdDevice = await wfdDeviceTask;
// Register for the ConnectionStatusChanged event handler
wfdDevice.ConnectionStatusChanged += OnConnectionStatusChanged;
await Dispatcher.RunAsync(CoreDispatcherPriority.High, () =>
{
ConnectedDevice connectedDevice = new ConnectedDevice("Waiting for client to connect...", wfdDevice, null);
_connectedDevices.Add(connectedDevice);
});
var EndpointPairs = wfdDevice.GetConnectionEndpointPairs();
_listenerSocket = null;
_listenerSocket = new StreamSocketListener();
_listenerSocket.ConnectionReceived += OnSocketConnectionReceived;
await _listenerSocket.BindEndpointAsync(EndpointPairs[0].LocalHostName, Globals.strServerPort);
rootPage.NotifyUserFromBackground("Devices connected on L2, listening on IP Address: " + EndpointPairs[0].LocalHostName.ToString() +
" Port: " + Globals.strServerPort, NotifyType.StatusMessage);
}
else
{
// Decline the connection request
rootPage.NotifyUserFromBackground("Connection request from " + connectionRequest.DeviceInformation.Name + " was declined", NotifyType.ErrorMessage);
connectionRequest.Dispose();
}
}
catch (Exception ex)
{
rootPage.NotifyUserFromBackground("Connect operation threw an exception: " + ex.Message, NotifyType.ErrorMessage);
}
}
private async void btnFromId_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
if (lvDiscoveredDevices.SelectedItems.Count == 0)
{
rootPage.NotifyUser("No device selected, please select atleast one.", NotifyType.ErrorMessage);
return;
}
var selectedDevices = lvDiscoveredDevices.SelectedItems;
foreach (DiscoveredDevice discoveredDevice in selectedDevices)
{
rootPage.NotifyUser("Connecting to " + discoveredDevice.DeviceInfo.Name + "...", NotifyType.StatusMessage);
try
{
WiFiDirectConnectionParameters connectionParams = new WiFiDirectConnectionParameters();
connectionParams.GroupOwnerIntent = Convert.ToInt16(txtGOIntent.Text);
_cancellationTokenSource = new CancellationTokenSource();
// IMPORTANT: FromIdAsync needs to be called from the UI thread
var wfdDevice = await WiFiDirectDevice.FromIdAsync(discoveredDevice.DeviceInfo.Id, connectionParams).AsTask(_cancellationTokenSource.Token);
// Register for the ConnectionStatusChanged event handler
wfdDevice.ConnectionStatusChanged += OnConnectionStatusChanged;
var endpointPairs = wfdDevice.GetConnectionEndpointPairs();
rootPage.NotifyUser("Devices connected on L2 layer, connecting to IP Address: " + endpointPairs[0].RemoteHostName +
" Port: " + Globals.strServerPort, NotifyType.StatusMessage);
// Wait for server to start listening on a socket
await Task.Delay(2000);
// Connect to Advertiser on L4 layer
StreamSocket clientSocket = new StreamSocket();
await clientSocket.ConnectAsync(endpointPairs[0].RemoteHostName, Globals.strServerPort);
SocketReaderWriter socketRW = new SocketReaderWriter(clientSocket, rootPage);
string sessionId = "Session: " + Path.GetRandomFileName();
ConnectedDevice connectedDevice = new ConnectedDevice(sessionId, wfdDevice, socketRW);
_connectedDevices.Add(connectedDevice);
socketRW.ReadMessage();
socketRW.WriteMessage(sessionId);
rootPage.NotifyUser("Connected with remote side on L4 layer", NotifyType.StatusMessage);
}
catch (TaskCanceledException)
{
rootPage.NotifyUser("FromIdAsync was canceled by user", NotifyType.ErrorMessage);
}
catch (Exception ex)
{
rootPage.NotifyUser("Connect operation threw an exception: " + ex.Message, NotifyType.ErrorMessage);
}
_cancellationTokenSource = null;
}
}
