/// <summary>
/// Creates a multicast listener on the specified multicast port,
/// bound to the specified multicast group. Whenever the byte[]
/// pattern specified by "expectedMessage" is received, the byte[]
/// pattern specifed by "returnMessage" is sent to the sender of
/// the "expected message".
/// </summary>
/// <param name="multicastPort"> Port to bind this listener to. </param>
/// <param name="multicastGroup"> Group to bind this listener to. </param>
/// <param name="expectedMessage"> the message to look for </param>
/// <param name="returnMessage"> the message to reply with </param>
public MulticastListener(int multicastPort, string multicastGroup, byte[] expectedMessage, byte[] returnMessage)
{
this.expectedMessage = expectedMessage;
this.returnMessage = returnMessage;
OneWireEventSource.Log.Debug("DEBUG: Creating Multicast Listener");
OneWireEventSource.Log.Debug("DEBUG: Multicast port: " + multicastPort);
OneWireEventSource.Log.Debug("DEBUG: Multicast group: " + multicastGroup);
// create multicast socket
socket = new DatagramSocket(); // MulticastSocket(multicastPort);
socket.MessageReceived += Multicast_MessageReceived;
socket.Control.MulticastOnly = true;
handlingPacket = false;
var t = Task.Run(async() =>
{
// specify IP address of adapter...
await socket.BindEndpointAsync(new HostName("localhost"), Convert.ToString(multicastPort));
});
t.Wait();
//join the multicast group
socket.JoinMulticastGroup(new HostName(multicastGroup));
OneWireEventSource.Log.Debug("DEBUG: waiting for multicast packet");
}
public async Task <bool> InitializeRecv()
{
recvInitialized = false;
try
{
if (msocketRecv != null)
{
msocketRecv.MessageReceived -= UDPMulticastMessageReceived;
msocketRecv.Dispose();
msocketRecv = null;
}
msocketRecv = new DatagramSocket();
msocketRecv.MessageReceived += UDPMulticastMessageReceived;
NetworkAdapter adapter = GetDefaultNetworkAdapter();
if (adapter != null)
{
await msocketRecv.BindServiceNameAsync(mPort);
}
// await msocketRecv.BindServiceNameAsync(mPort, adapter);
else
{
await msocketRecv.BindServiceNameAsync(mPort);
}
HostName mcast = new HostName(mAddress);
msocketRecv.JoinMulticastGroup(mcast);
mLastIDReceived = 0;
recvInitialized = true;
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Exception while listening: " + e.Message);
recvInitialized = false;
}
return(recvInitialized);
}
public IAsyncAction Start()
{
return(Task.Run(async() =>
{
if (isStarted)
{
return;
}
multicastSsdpSocket = new DatagramSocket();
multicastSsdpSocket.MessageReceived += MulticastSsdpSocket_MessageReceived;
multicastSsdpSocket.Control.MulticastOnly = true;
await multicastSsdpSocket.BindServiceNameAsync(Constants.SSDP_PORT);
multicastSsdpSocket.JoinMulticastGroup(Constants.SSDP_HOST);
unicastLocalSocket = new DatagramSocket();
unicastLocalSocket.MessageReceived += UnicastLocalSocket_MessageReceived;
await unicastLocalSocket.BindServiceNameAsync("");
logger.WriteLine($"ControlPoint: Bind to port :{unicastLocalSocket.Information.LocalPort} for UNICAST search responses.");
NetworkInformation.NetworkStatusChanged += NetworkInformation_NetworkStatusChanged;
networks = GetNetworks();
isStarted = true;
logger.WriteLine("ControlPoint started.");
}).AsAsyncAction());
}
async Task <bool> InitializeMulticastRecv()
{
try
{
if (msocketRecv != null)
{
msocketRecv.MessageReceived -= UDPMulticastMessageReceived;
msocketRecv.Dispose();
msocketRecv = null;
}
msocketRecv = new DatagramSocket();
msocketRecv.Control.MulticastOnly = true;
msocketRecv.MessageReceived += UDPMulticastMessageReceived;
NetworkAdapter adapter = GetDefaultNetworkAdapter(SendInterfaceAddress);
if (adapter != null)
{
await msocketRecv.BindServiceNameAsync(MulticastUDPPort.ToString(), adapter);
}
else
{
await msocketRecv.BindServiceNameAsync(MulticastUDPPort.ToString());
}
HostName mcast = new HostName(MulticastIPAddress);
msocketRecv.JoinMulticastGroup(mcast);
return(true);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Exception while listening: " + e.Message);
}
return(false);
}
public static async void init(TiSettings settings)
{
if (!settings.ContainsKey("logToken") || settings["logToken"].Length == 0)
{
return;
}
logToken = settings["logToken"];
multicastSocket = new DatagramSocket();
multicastSocket.MessageReceived += multicastSocket_MessageReceived;
HostName hostname = new HostName("239.6.6.6");
try {
await multicastSocket.BindServiceNameAsync("8666");
multicastSocket.JoinMulticastGroup(hostname);
IOutputStream stream = await multicastSocket.GetOutputStreamAsync(hostname, "8666");
DataWriter writer = new DataWriter(stream);
writer.WriteString("TI_WP8_LOGGER");
await writer.StoreAsync();
writer.DetachStream();
stream.Dispose();
} catch (Exception ex) {
if (SocketError.GetStatus(ex.HResult) == SocketErrorStatus.Unknown)
{
throw;
}
Debug.WriteLine(ex.ToString());
}
}
private async void NetworkInformation_NetworkStatusChanged(object sender)
{
logger.WriteLine("Network status changed");
var newNetworks = GetNetworks();
var goneNetworkIds = networks
.Select(n => n.NetworkAdapter.NetworkAdapterId)
.Where(id => !newNetworks.Any(n => n.NetworkAdapter.NetworkAdapterId == id)).ToList();
foreach (var networkId in goneNetworkIds)
{
if (NetworkGone != null)
{
await dispatcher.RunAsync(CoreDispatcherPriority.Normal,
new DispatchedHandler(() =>
{
NetworkGone?.Invoke(this, networkId);
}));
}
}
networks = newNetworks;
multicastSsdpSocket.JoinMulticastGroup(Constants.SSDP_HOST);
await SearchDevices();
}
public override void StartClient(string address, int port)
{
socket_ = new DatagramSocket();
sendHost = new HostName(address);
sendPort = port.ToString();
socket_.JoinMulticastGroup(sendHost);//この辺でjoinする
}
static async Task BindToSocketAndWriteQuery(DatagramSocket socket, byte[] bytes, CancellationToken cancellationToken)
{
#if WINDOWS_UWP
// Set control option for multicast. This enables re-use of the port, which is always in use under Windows 10 otherwise.
socket.Control.MulticastOnly = true;
#endif
await socket.BindServiceNameAsync("5353") // binds to the local IP addresses of all network interfaces on the local computer if no adapter is specified
.AsTask(cancellationToken)
.ConfigureAwait(false);
socket.JoinMulticastGroup(new HostName("224.0.0.251"));
var os = await socket.GetOutputStreamAsync(new HostName("224.0.0.251"), "5353")
.AsTask(cancellationToken)
.ConfigureAwait(false);
using (var writer = new DataWriter(os))
{
writer.WriteBytes(bytes);
await writer.StoreAsync()
.AsTask(cancellationToken)
.ConfigureAwait(false);
Debug.WriteLine("Sent mDNS query");
writer.DetachStream();
}
}
private async void ListenSSDP_Click(object sender, RoutedEventArgs e)
{
socket = new DatagramSocket();
socket.MessageReceived += (s, args) =>
{
var reader = args.GetDataReader();
var data = reader.ReadString(reader.UnconsumedBufferLength);
string address = $"{args.RemoteAddress.CanonicalName}:{args.RemotePort}";
logger.WriteLine($"MULTICAST [{address}]\n{data}");
};
socket.Control.MulticastOnly = true;
await socket.BindServiceNameAsync(Constants.SSDP_PORT);
socket.JoinMulticastGroup(Constants.SSDP_HOST);
NetworkInformation.NetworkStatusChanged += (s) => socket.JoinMulticastGroup(Constants.SSDP_HOST);
logger.WriteLine($"Start listening multicast {Constants.SSDP_ADDRESS}");
}
private static async Task OpenSharedChannelAsync()
{
await _mutex.WaitAsync().ConfigureAwait(false);
if (IsJoined || !_shouldJoinChannel)
{
return;
}
CloseSharedChannel();
_log.Info("Opening shared MDNS channel...");
while (!IsJoined && _shouldJoinChannel)
{
try
{
// Create new socket
_udpSocket = new DatagramSocket();
_udpSocket.MessageReceived += UDPSocket_MessageReceived;
// Fixing an issue on Windows 8.1 by attaching the socket to the Internet connection profile's network adapter.
// Source: http://blogs.msdn.com/b/wsdevsol/archive/2013/12/19/datagramsocket-multicast-functionality-on-windows-8-1-throws-an-error-0x80072af9-wsahost-not-found.aspx
var networkAdapter = NetworkInformation.GetInternetConnectionProfile().NetworkAdapter;
// Bind the service name and join the multicast group
_log.Debug("Opening UDP socket...");
await _udpSocket.BindServiceNameAsync(BonjourUtility.MulticastDNSPort.ToString(), networkAdapter).AsTask().ConfigureAwait(false);
_log.Debug("Joining multicast group...");
_udpSocket.JoinMulticastGroup(_mdnsHostName);
// All done
IsJoined = true;
}
catch (Exception e)
{
_log.Warning("Caught exception while opening UDP socket");
_log.Debug("Exception details: " + e.ToString());
CloseSharedChannel();
}
if (!IsJoined)
{
await Task.Delay(1000).ConfigureAwait(false);
}
else
{
_log.Info("Successfully opened shared MDNS channel.");
}
}
_mutex.Release();
}
private async Task BindToLan(string port)
{
#if UNITY_EDITOR
var p = int.Parse(port);
using (var socket = new UdpClient(p)) {
socket.JoinMulticastGroup(IPAddress.Parse(Multicast));
Logs.Log($"UDP ready");
while (true)
{
var rec = await socket.ReceiveAsync();
var time = DateTime.Now;
Logs.Log($"Udp message received");
var str = Encoding.Default.GetString(rec.Buffer);
if (str != "IP?")
{
Logs.LogWarning($"Bad message");
continue;
}
var rep = Encoding.Default.GetBytes("IP!");
await socket.SendAsync(rep, rep.Length, rec.RemoteEndPoint);
Logs.Log($"Answer sent in {DateTime.Now - time}");
}
}
#elif UNITY_WSA
using (var _socket = new DatagramSocket()) {
await _socket.BindServiceNameAsync(port);
_socket.JoinMulticastGroup(new HostName(Multicast));
_socket.MessageReceived += async(sender, args) => {
Logs.Log($"Received message from {args.RemoteAddress}:{args.RemotePort}");
using (var output = new DataWriter(await sender.GetOutputStreamAsync(args.RemoteAddress, args.RemotePort))) {
string read;
using (var reader = args.GetDataReader()) { read = reader.ReadString(reader.UnconsumedBufferLength); }
if (read != "IP?")
{
return;
}
output.WriteString("IP!");
await output.StoreAsync();
await output.FlushAsync();
}
};
while (true)
{
await Task.Delay(new TimeSpan(0, 0, 1));
}
}
#endif
}
public async Task SsdpQueryAsync(string filter = "ssdp:all", int seconds = 5, int port = 1900)
{
_ssdpPort = port;
_foundDevices = new List <string>();
var remoteIP = new Windows.Networking.HostName(_ssdp_ip);
var ssdpQuery = GetSSDPQuery(seconds, port, filter);
var reqBuff = Encoding.UTF8.GetBytes(ssdpQuery);
try
{
if (_readerSocket != null)
{
_readerSocket.Dispose();
}
}
catch (Exception ex)
{
LogException("SSDPFinder.QueryAsync - Close Existing Socket", ex);
}
_readerSocket = new DatagramSocket();
_readerSocket.MessageReceived += (sender, args) =>
{
Task.Run(async() =>
{
var addr = args.RemoteAddress.DisplayName;
var result = args.GetDataStream();
var resultStream = result.AsStreamForRead(1024);
using (var reader = new StreamReader(resultStream))
{
var resultText = await reader.ReadToEndAsync();
if (resultText.StartsWith("HTTP/1.1 200 OK"))
{
HandleSSDPResponse(resultText);
}
};
});
};
var ipAddress = PlatformSupport.Services.Network.GetIPV4Address();
var hostName = new Windows.Networking.HostName(ipAddress);
await _readerSocket.BindEndpointAsync(hostName, "");
Core.PlatformSupport.Services.Logger.AddCustomEvent(LogLevel.Message, "SSDPFinder.QueryAsync", _readerSocket.Information.LocalAddress + " " + _readerSocket.Information.LocalPort);
_readerSocket.JoinMulticastGroup(remoteIP);
using (var stream = await _readerSocket.GetOutputStreamAsync(remoteIP, _ssdpPort.ToString()))
{
await stream.WriteAsync(reqBuff.AsBuffer());
}
}
public void addMembership(string mcastAddr, string ifaceAddr)
{
_socket.JoinMulticastGroup(new HostName(mcastAddr));
if (ifaceAddr != string.Empty && ifaceAddr != null)
{
throw new NotImplementedException();
}
// TO DO ICommsInterface
}
/// <summary>
/// initialize multicast
/// </summary>
private async void multi_cast()
{
listenerSocket = new DatagramSocket(); //datagram object
listenerSocket.MessageReceived += MessageReceived; //MessageReceived event
//listenerSocket.MessageReceived += MessageReceived;
listenerSocket.Control.MulticastOnly = true;
await listenerSocket.BindServiceNameAsync("22113");
listenerSocket.JoinMulticastGroup(new HostName("224.3.0.5"));
}
/// <summary>
/// Searches for an available devices of specified type.
/// </summary>
/// <param name="searchTarget">
/// The type of the devices to search for.
/// </param>
/// <param name="timeForResponse">
/// The time (in seconds) of a search.
/// </param>
/// <returns>
/// An observable collection which contains search results.
/// </returns>
public IObservable <SearchResponseMessage> Search(string searchTarget, int timeForResponse)
{
return(Observable.Create <SearchResponseMessage>(async observer =>
{
var searchSocket = new DatagramSocket();
// Handling responses from found devices
searchSocket.MessageReceived += async(sender, args) =>
{
var dataReader = args.GetDataReader();
dataReader.InputStreamOptions = InputStreamOptions.Partial;
if (dataReader.UnconsumedBufferLength == 0)
{
await dataReader.LoadAsync(1024);
}
var message = dataReader.ReadString(dataReader.UnconsumedBufferLength);
try
{
var response = SearchResponseMessage.Create(message);
observer.OnNext(response);
}
catch (ArgumentException ex)
{
logger.Instance().Warning(ex, "The received M-Search response has been ignored.", "Message".As(message));
}
};
await searchSocket.BindServiceNameAsync("0");
searchSocket.JoinMulticastGroup(this.multicastHost);
var request = MSearchRequestFormattedString.F(searchTarget, timeForResponse);
var buffer = Encoding.UTF8.GetBytes(request).AsBuffer();
// Sending the search request to a multicast group
var outputStream = await searchSocket.GetOutputStreamAsync(this.multicastHost, MulticastPort.ToString());
await outputStream.WriteAsync(buffer);
await outputStream.WriteAsync(buffer);
// Stop listening for a devices when timeout for responses is expired
Observable.Timer(TimeSpan.FromSeconds(timeForResponse)).Subscribe(s =>
{
observer.OnCompleted();
searchSocket.Dispose();
});
logger.Instance().Debug("M-Search request has been sent. [multicastHost={0}, searchTarget={1}]".F(multicastHost.DisplayName, searchTarget));
return searchSocket.Dispose;
}));
}
/// <summary>
/// Returns list of bridge IPs
/// </summary>
/// <returns></returns>
public async Task <IEnumerable <LocatedBridge> > LocateBridgesAsync(TimeSpan timeout)
{
if (timeout <= TimeSpan.Zero)
{
throw new ArgumentException("Timeout value must be greater than zero.", nameof(timeout));
}
var discoveredDevices = new List <string>();
var multicastIP = new HostName("239.255.255.250");
using (var socket = new DatagramSocket())
{
//Handle MessageReceived
socket.MessageReceived += (sender, e) =>
{
var reader = e.GetDataReader();
var bytesRemaining = reader.UnconsumedBufferLength;
var receivedString = reader.ReadString(bytesRemaining);
var location = receivedString.Substring(receivedString.IndexOf("LOCATION:", System.StringComparison.Ordinal) + 9);
receivedString = location.Substring(0, location.IndexOf("\r", System.StringComparison.Ordinal)).Trim();
discoveredDevices.Add(receivedString);
};
await socket.BindEndpointAsync(null, string.Empty);
socket.JoinMulticastGroup(multicastIP);
var start = DateTime.Now;
do
{
using (var stream = await socket.GetOutputStreamAsync(multicastIP, "1900"))
using (var writer = new DataWriter(stream))
{
string request = "M-SEARCH * HTTP/1.1\r\n" +
"HOST:239.255.255.250:1900\r\n" +
//"ST:urn:schemas-upnp-org:device:Basic:1\r\n" + //Alternative
// "ST:upnp:rootdevice\r\n" + //Alternative
"ST:SsdpSearch:all\r\n" +
"MAN:\"ssdp:discover\"\r\n" +
"MX:3\r\n\r\n\r\n";
writer.WriteString(request.ToString());
await writer.StoreAsync();
}
}while (DateTime.Now.Subtract(start) < timeout); // try for thee seconds
}
return(await FilterBridges(discoveredDevices));
}
public void MulticastAddMembership(string ipLan, string mcastAddress)
{
if (!_isUnicastInitialized)
{
throw new ArgumentException("Multicast interface must be initialized before adding multicast memberships");
}
var hostName = new HostName(mcastAddress);
DatagramSocket.JoinMulticastGroup(hostName);
_multicastMemberships.Add(mcastAddress, true);
}
public bool Bind(int port)
{
_datagramSocket = new DatagramSocket();
_datagramSocket.Control.InboundBufferSizeInBytes = NetConstants.SocketBufferSize;
_datagramSocket.Control.DontFragment = true;
_datagramSocket.Control.OutboundUnicastHopLimit = NetConstants.SocketTTL;
_datagramSocket.MessageReceived += OnMessageReceived;
try
{
_datagramSocket.BindServiceNameAsync(port.ToString()).AsTask().Wait();
_datagramSocket.JoinMulticastGroup(MulticastAddressV4);
_datagramSocket.JoinMulticastGroup(MulticastAddressV6);
_localEndPoint = new NetEndPoint(_datagramSocket.Information.LocalAddress, _datagramSocket.Information.LocalPort);
}
catch (Exception ex)
{
NetUtils.DebugWriteError("[B]Bind exception: {0}", ex.ToString());
return(false);
}
return(true);
}
public async Task Bind(string localAddress, string multicastAddress, string multicastPort)
{
information = new ServerInformation(localAddress, multicastAddress, multicastPort);
socket = new DatagramSocket();
socket.Control.MulticastOnly = true;
await socket.BindEndpointAsync(new HostName(information.LocalAddress), information.MulticastPort);
socket.JoinMulticastGroup(new HostName(information.MulticastAddress));
socket.MessageReceived += OnMessageReceived;
}
private static async Task OpenSharedChannelAsync()
{
await _mutex.WaitAsync().ConfigureAwait(false);
if (IsJoined || !_shouldJoinChannel)
{
return;
}
CloseSharedChannel();
_log.Info("Opening shared MDNS channel...");
while (!IsJoined && _shouldJoinChannel)
{
try
{
// Create new socket
_udpSocket = new DatagramSocket();
_udpSocket.MessageReceived += UDPSocket_MessageReceived;
// Bind the service name and join the multicast group
_log.Debug("Opening UDP socket...");
await _udpSocket.BindServiceNameAsync(BonjourUtility.MulticastDNSPort.ToString()).AsTask().ConfigureAwait(false);
_log.Debug("Joining multicast group...");
_udpSocket.JoinMulticastGroup(_mdnsHostName);
// All done
IsJoined = true;
}
catch (Exception e)
{
_log.Warning("Caught exception while opening UDP socket");
_log.Debug("Exception details: " + e.ToString());
CloseSharedChannel();
}
if (!IsJoined)
{
await Task.Delay(1000).ConfigureAwait(false);
}
else
{
_log.Info("Successfully opened shared MDNS channel.");
}
}
_mutex.Release();
}
public static async void StartListening()
{
if (DatagramSocket != null)
{
await DatagramSocket.CancelIOAsync();
}
DatagramSocket = new DatagramSocket();
DatagramSocket.MessageReceived += async(sender, args) =>
{
await OnReceived(args.GetDataStream(), args.RemoteAddress);
};
await DatagramSocket.BindServiceNameAsync(DeviceAuthPort.ToString());
DatagramSocket.JoinMulticastGroup(DeviceMulticastGroupAddress);
}
private async Task <DatagramSocket> StartMulticastListenerAsync(string port)
{
if (socketIsConnected)
{
return(socket);
}
socket = new DatagramSocket();
// You must register handlers before calling BindXxxAsync
socket.MessageReceived += SocketOnMessageReceived;
await socket.BindServiceNameAsync(port, NetworkInformation.GetInternetConnectionProfile().NetworkAdapter); // Listen on desired port
socket.JoinMulticastGroup(multicastIP); // Join socket to the multicast IP address
socketIsConnected = true;
return(socket);
}
/// <summary>
/// Search one device on the local network with the specified name.
/// </summary>
/// <param name="deviceName">Friendly name of the device.</param>
/// <param name="timeoutMiliseconds">Timeout to search the device.</param>
/// <returns>Device with the specified name.</returns>
public static async Task <IDeviceInfo> GetDevice(string deviceName, uint timeoutMiliseconds = 6000)
{
if (string.IsNullOrEmpty(deviceName))
{
throw new ArgumentNullException("deviceName");
}
if (timeoutMiliseconds == 0)
{
throw new InvalidOperationException("Timeout must be greater than zero.");
}
IDeviceInfo deviceInfo = null;
var timeoutCancellationTokenSource = new CancellationTokenSource();
using (var socket = new DatagramSocket())
{
socket.MessageReceived += async(sender, args) =>
{
var reader = args.GetDataReader();
var deviceLocationUri = GetDeviceLocation(reader.ReadString(reader.UnconsumedBufferLength));
var dinfo = await GetDeviceInfo(deviceLocationUri);
#if DEBUG
Debug.WriteLine(string.Format("DEVICE FOUND: Name = {0}, Manufacturer = {1}, Model = {2}, Address = {3}", dinfo.FriendlyName, dinfo.Manufacturer, dinfo.Model, dinfo.UrlBase));
#endif
if (dinfo.FriendlyName.Equals(deviceName))
{
deviceInfo = dinfo;
timeoutCancellationTokenSource.Cancel();
}
};
await socket.BindEndpointAsync(null, "");
socket.JoinMulticastGroup(DialConstants.MulticastHost);
var writer = new DataWriter(await socket.GetOutputStreamAsync(DialConstants.MulticastHost, DialConstants.UdpPort));
writer.WriteString(string.Format(DialConstants.MSearchMessage, DialConstants.MulticastHost, DialConstants.UdpPort));
await writer.StoreAsync();
try
{
await Task.Delay((int)timeoutMiliseconds, timeoutCancellationTokenSource.Token);
}
catch
{}
}
return(deviceInfo);
}
public async override void StartServer(string address, int port)
{
try
{
socket_ = new DatagramSocket();
socket_.MessageReceived += OnMessage;
rcvHost = new HostName(address);
await socket_.BindServiceNameAsync(port.ToString());
socket_.JoinMulticastGroup(rcvHost);//この辺でjoinする
}
catch (Exception e)
{
Debug.LogError(e.ToString());
}
}
/// <summary>
/// Start listening.
/// </summary>
public override async Task <bool> StartListeningAsync()
{
bool status = false;
if (_listenerSocket == null)
{
_listenerSocket = new DatagramSocket();
_listenerSocket.MessageReceived += AdvertisementMessageReceivedFromManagerAsync;
await _listenerSocket.BindServiceNameAsync(ListenerPort);
_listenerSocket.JoinMulticastGroup(ListenerGroupHost);
status = true;
}
return(status);
}
// listen for announcements on a given adapter
Task ListenForAnnouncementsAsync(NetworkAdapter adapter, Action <AdapterInformation, string, byte[]> callback, CancellationToken cancellationToken)
{
return(Task.Factory.StartNew(async() =>
{
using (var socket = new DatagramSocket())
{
// setup delegate to detach from later
TypedEventHandler <DatagramSocket, DatagramSocketMessageReceivedEventArgs> handler =
(sock, args) =>
{
var dr = args.GetDataReader();
var buffer = dr.ReadBuffer(dr.UnconsumedBufferLength).ToArray();
callback(new AdapterInformation(args.LocalAddress.CanonicalName.ToString(), args.LocalAddress.RawName.ToString()), args.RemoteAddress.RawName.ToString(), buffer);
};
socket.MessageReceived += handler;
// Set control option for multicast. This enables re-use of the port, which is always in use under Windows 10 otherwise.
socket.Control.MulticastOnly = true;
if (adapter != null)
{
await socket.BindServiceNameAsync("5353", adapter)
.AsTask(cancellationToken)
.ConfigureAwait(false);
}
else
{
await socket.BindServiceNameAsync("5353")
.AsTask(cancellationToken)
.ConfigureAwait(false);
}
socket.JoinMulticastGroup(new HostName("224.0.0.251"));
while (!cancellationToken.IsCancellationRequested)
{
await Task.Delay(5000, cancellationToken).ConfigureAwait(false);
}
socket.MessageReceived -= handler;
socket.Dispose();
}
}, cancellationToken, TaskCreationOptions.LongRunning, TaskScheduler.Default).Unwrap());
}
/// <summary>
/// @see http://www.johnthom.com/implementing-ssdp-search-in-windows-phone-8-using-winrt/
/// </summary>
public async Task DiscoverDevices()
{
int timeout = 3000;
var remoteIp = "239.255.255.250";
var remoteIpHostName = new Windows.Networking.HostName(remoteIp);
var port = "1900";
string query = "M-SEARCH * HTTP/1.1\r\n" +
"HOST: 239.255.255.250:1900\r\n" +
"ST: upnp:rootdevice\r\n" +
"MAN: \"ssdp:discover\"\r\n" +
"MX: " + timeout.ToString() + "\r\n\r\n";
var buffer = Encoding.UTF8.GetBytes(query);
using (var socket = new DatagramSocket())
{
socket.MessageReceived += (sender, args) => {
Task.Run(() => {
using (var reader = args.GetDataReader())
{
byte[] respBuff = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(respBuff);
string response = Encoding.UTF8.GetString(respBuff, 0, respBuff.Length).ToLower();
response.Trim('\0');
ProcessSSDPResponse(response);
}
});
};
await socket.BindEndpointAsync(null, "");
socket.JoinMulticastGroup(remoteIpHostName);
using (var stream = await socket.GetOutputStreamAsync(remoteIpHostName, port))
{
await stream.WriteAsync(buffer.AsBuffer());
}
// Execute within timeout
await Task.Delay(timeout);
}
}
public async void FindTvs()
{
if (searchState == SearchState.Searching)
{
StopSearching();
}
tvSearchSocket = new DatagramSocket();
tvSearchSocket.MessageReceived += TvListenCompleted;
await tvSearchSocket.BindEndpointAsync(null, "");
tvSearchSocket.JoinMulticastGroup(multicastAddress);
StartedSearching();
SendSSDP();
tvSearchRetryTimer = new Timer(TvSearchRetry, null, TimeSpan.FromSeconds(tvSearchRetryTimeSeconds), TimeSpan.FromMilliseconds(-1));
tvSearchTimeoutTimer = new Timer(TvSearchTimeout, null, TimeSpan.FromSeconds(tvSearchTotalTimeSeconds), TimeSpan.FromMilliseconds(-1));
searchState = SearchState.Searching;
}
public override async void Start()
{
if (Status == ListenerStatus.Listening)
{
return;
}
try
{
_datagramSocket = new DatagramSocket();
_datagramSocket.MessageReceived += DatagramSocketOnMessageReceived;
await _datagramSocket.BindServiceNameAsync(MulticastPort.ToString());
_datagramSocket.JoinMulticastGroup(MulticastIpAddress);
RaiseStatusChanged(ListenerStatus.Listening);
}
catch
{
RaiseStatusChanged(ListenerStatus.PortNotFree);
}
}
private static async Task BindToSocketAndWriteQuery(DatagramSocket socket, byte[] bytes, CancellationToken cancellationToken)
{
#if !WINDOWS_PHONE
try
{
// Try to bind using port 5353 first
await socket.BindServiceNameAsync("5353", NetworkInformation.GetInternetConnectionProfile().NetworkAdapter)
.AsTask(cancellationToken)
.ConfigureAwait(false);
}
catch (Exception)
{
// If it fails, use the default
await socket.BindServiceNameAsync("", NetworkInformation.GetInternetConnectionProfile().NetworkAdapter)
.AsTask(cancellationToken)
.ConfigureAwait(false);
}
#else
await socket.BindServiceNameAsync("5353")
.AsTask(cancellationToken)
.ConfigureAwait(false);
#endif
socket.JoinMulticastGroup(new HostName("224.0.0.251"));
var os = await socket.GetOutputStreamAsync(new HostName("224.0.0.251"), "5353")
.AsTask(cancellationToken)
.ConfigureAwait(false);
using (var writer = new DataWriter(os))
{
writer.WriteBytes(bytes);
await writer.StoreAsync()
.AsTask(cancellationToken)
.ConfigureAwait(false);
Debug.WriteLine("Sent mDNS query");
writer.DetachStream();
}
}
public bool Bind(int port)
{
_datagramSocket = new DatagramSocket();
_datagramSocket.Control.InboundBufferSizeInBytes = NetConstants.SocketBufferSize;
_datagramSocket.Control.DontFragment = true;
_datagramSocket.Control.OutboundUnicastHopLimit = NetConstants.SocketTTL;
_datagramSocket.MessageReceived += OnMessageReceived;
try
{
_datagramSocket.BindServiceNameAsync(port.ToString()).AsTask().Wait();
_datagramSocket.JoinMulticastGroup(MulticastAddressV6);
_localEndPoint = new NetEndPoint(_datagramSocket.Information.LocalAddress, _datagramSocket.Information.LocalPort);
}
catch (Exception ex)
{
NetUtils.DebugWriteError("[B]Bind exception: {0}", ex.ToString());
return false;
}
return true;
}
