// Read out and print the message received from the socket.
private async void StartReader(Windows.Networking.Proximity.ProximityStreamSocket socket,
Windows.Storage.Streams.DataReader reader)
{
uint initialLength = 4;
try
{
await reader.LoadAsync(initialLength);
uint msgLength = (uint)reader.ReadInt32();
try
{
await reader.LoadAsync(msgLength);
string message = reader.ReadString(msgLength);
WriteMessageText("Received message: " + message + "\n");
// After receiving a message, listen for the next message.
StartReader(socket, reader);
}
catch (Exception e)
{
WriteMessageText("Error: " + e.Message + "\n");
socket.Dispose();
}
}
catch (Exception e)
{
WriteMessageText("Error: " + e.Message + "\n");
socket.Dispose();
}
}
// Reference socket streams for writing and reading messages.
private void SendMessage(Windows.Networking.Proximity.ProximityStreamSocket socket)
{
// Get the network socket from the proximity connection.
proximitySocket = socket;
// Create DataWriter for writing messages to peers.
dataWriter = new Windows.Storage.Streams.DataWriter(proximitySocket.OutputStream);
// Listen for messages from peers.
Windows.Storage.Streams.DataReader dataReader =
new Windows.Storage.Streams.DataReader(proximitySocket.InputStream);
StartReader(proximitySocket, dataReader);
}
async private void ConnectToPeer(Windows.Networking.Proximity.PeerInformation peerInfo)
{
WriteMessageText("Peer found. Connecting to " + peerInfo.DisplayName + "\n");
try
{
Windows.Networking.Proximity.ProximityStreamSocket socket =
await Windows.Networking.Proximity.PeerFinder.ConnectAsync(peerInfo);
WriteMessageText("Connection successful. You may now send messages.\n");
SendMessage(socket);
}
catch (Exception err)
{
WriteMessageText("Connection failed: " + err + "\n");
}
}
