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 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, 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, 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;
}
}
