/// <summary>
/// Sends a NOTIFY packet "ssdp:byebye" to all UPnP endpoints.
/// </summary>
/// <param name="NT">Notification type.</param>
/// <param name="USN">Unique Service Name.</param>
/// <param name="rootDevice">Root device for that the message should be send.</param>
public void SendMessage(string NT, string USN, DvDevice rootDevice)
{
SimpleHTTPRequest response = new SimpleHTTPRequest("NOTIFY", "*");
response.SetHeader("NT", NT);
response.SetHeader("NTS", "ssdp:byebye");
response.SetHeader("USN", USN);
response.SetHeader("BOOTID.UPNP.ORG", _serverData.BootId.ToString());
// Currently, we don't support SEARCHPORT.UPNP.ORG function and header
foreach (EndpointConfiguration config in _serverData.UPnPEndPoints)
{
if (config.AddressFamily == AddressFamily.InterNetworkV6)
{
response.SetHeader("OPT", "\"http://schemas.upnp.org/upnp/1/0/\"; ns=01");
response.SetHeader("01-NLS", _serverData.BootId.ToString());
}
response.SetHeader("CONFIGID.UPNP.ORG", config.ConfigId.ToString());
IPEndPoint ep = new IPEndPoint(config.SSDPMulticastAddress, UPnPConsts.SSDP_MULTICAST_PORT);
response.SetHeader("HOST", NetworkHelper.IPEndPointToString(ep));
byte[] bytes = response.Encode();
NetworkHelper.MulticastMessage(config.SSDP_UDP_UnicastSocket, config.SSDPMulticastAddress, bytes);
}
}
protected void SendMulticastEventNotification(DvService service, IEnumerable<DvStateVariable> variables)
{
DvDevice device = service.ParentDevice;
EventingState eventingState = _serverData.GetMulticastEventKey(service);
// First cluster variables by multicast event level so we can put variables of the same event level into a single message
IDictionary<string, ICollection<DvStateVariable>> variablesByLevel =
new Dictionary<string, ICollection<DvStateVariable>>();
foreach (DvStateVariable variable in variables)
{
ICollection<DvStateVariable> variablesCollection;
if (!variablesByLevel.TryGetValue(variable.MulticastEventLevel, out variablesCollection))
variablesByLevel[variable.MulticastEventLevel] = variablesCollection = new List<DvStateVariable>();
variablesCollection.Add(variable);
}
foreach (KeyValuePair<string, ICollection<DvStateVariable>> varByLevel in variablesByLevel)
{
// Use a maximum cluster size of GENA_MAX_MULTICAST_EVENT_VAR_COUNT to keep UDP message small
ICollection<IList<DvStateVariable>> variableClusters = CollectionUtils.Cluster(
varByLevel.Value, UPnPConsts.GENA_MAX_MULTICAST_EVENT_VAR_COUNT);
foreach (IList<DvStateVariable> cluster in variableClusters)
{
foreach (DvStateVariable variable in cluster)
eventingState.UpdateModerationData(variable);
eventingState.IncEventKey();
byte[] bodyData = UPnPConsts.UTF8_NO_BOM.GetBytes(GENAMessageBuilder.BuildEventNotificationMessage(
cluster, false)); // Albert TODO: Is it correct not to force the simple string equivalent for extended data types here?
SimpleHTTPRequest request = new SimpleHTTPRequest("NOTIFY", "*");
request.SetHeader("CONTENT-LENGTH", bodyData.Length.ToString());
request.SetHeader("CONTENT-TYPE", "text/xml; charset=\"utf-8\"");
request.SetHeader("USN", device.UDN + "::" + service.ServiceTypeVersion_URN);
request.SetHeader("SVCID", service.ServiceId);
request.SetHeader("NT", "upnp:event");
request.SetHeader("NTS", "upnp:propchange");
request.SetHeader("SEQ", eventingState.EventKey.ToString());
request.SetHeader("LVL", varByLevel.Key);
request.SetHeader("BOOTID.UPNP.ORG", _serverData.BootId.ToString());
foreach (EndpointConfiguration config in _serverData.UPnPEndPoints)
{
IPEndPoint ep = new IPEndPoint(config.GENAMulticastAddress, UPnPConsts.GENA_MULTICAST_PORT);
request.SetHeader("HOST", NetworkHelper.IPEndPointToString(ep));
request.MessageBody = bodyData;
byte[] bytes = request.Encode();
NetworkHelper.SendData(config.GENA_UDP_Socket, ep, bytes, 1);
}
}
}
}
protected void MulticastSearchForST(string st)
{
SimpleHTTPRequest request = new SimpleHTTPRequest("M-SEARCH", "*");
request.SetHeader("MAN", "\"ssdp:discover\"");
request.SetHeader("MX", UPnPConfiguration.SEARCH_MX.ToString());
request.SetHeader("ST", st);
request.SetHeader("USER-AGENT", UPnPConfiguration.UPnPMachineInfoHeader);
lock (_cpData.SyncObj)
{
foreach (EndpointConfiguration config in _cpData.Endpoints)
{
IPEndPoint ep = new IPEndPoint(config.SSDPMulticastAddress, UPnPConsts.SSDP_MULTICAST_PORT);
request.SetHeader("HOST", NetworkHelper.IPEndPointToString(ep));
Socket socket = config.SSDP_UDP_UnicastSocket;
if (socket == null)
continue;
byte[] bytes = request.Encode();
NetworkHelper.MulticastMessage(socket, config.SSDPMulticastAddress, bytes); // The server will send the answer to the same socket as we use to send
}
}
}
protected void UnicastSearchForST(string st, IPEndPoint endPoint)
{
SimpleHTTPRequest request = new SimpleHTTPRequest("M-SEARCH", "*");
request.SetHeader("HOST", NetworkHelper.IPEndPointToString(endPoint));
request.SetHeader("MAN", "\"ssdp:discover\"");
request.SetHeader("ST", st);
request.SetHeader("USER-AGENT", UPnPConfiguration.UPnPMachineInfoHeader);
lock (_cpData.SyncObj)
{
foreach (EndpointConfiguration config in _cpData.Endpoints)
{
if (config.AddressFamily != endPoint.AddressFamily)
continue;
Socket socket = config.SSDP_UDP_UnicastSocket;
if (socket == null)
return;
byte[] bytes = request.Encode();
NetworkHelper.SendData(socket, endPoint, bytes, 1); // The server will send the answer to the same socket as we use to send
return;
}
}
}
/// <summary>
/// Sends a NOTIFY packet "ssdp:alive" to all UPnP endpoints.
/// </summary>
/// <param name="NT">Notification type.</param>
/// <param name="USN">Unique Service Name.</param>
/// <param name="rootDevice">Root device for that the message should be send.</param>
public void SendMessage(string NT, string USN, DvDevice rootDevice)
{
SimpleHTTPRequest response = new SimpleHTTPRequest("NOTIFY", "*");
response.SetHeader("CACHE-CONTROL", "max-age = " + _serverData.AdvertisementExpirationTime);
response.SetHeader("NT", NT);
response.SetHeader("NTS", "ssdp:alive");
response.SetHeader("SERVER", UPnPConfiguration.UPnPMachineInfoHeader);
response.SetHeader("USN", USN);
response.SetHeader("BOOTID.UPNP.ORG", _serverData.BootId.ToString());
// Currently, we don't support SEARCHPORT.UPNP.ORG function and header
foreach (EndpointConfiguration config in _serverData.UPnPEndPoints)
{
if (config.AddressFamily == AddressFamily.InterNetworkV6)
{
response.SetHeader("OPT", "\"http://schemas.upnp.org/upnp/1/0/\"; ns=01");
response.SetHeader("01-NLS", _serverData.BootId.ToString());
}
response.SetHeader("CONFIGID.UPNP.ORG", config.ConfigId.ToString());
IPEndPoint ep = new IPEndPoint(config.SSDPMulticastAddress, UPnPConsts.SSDP_MULTICAST_PORT);
response.SetHeader("HOST", NetworkHelper.IPEndPointToString(ep));
if (config.SSDPUsesSpecialSearchPort)
response.SetHeader("SEARCHPORT.UPNP.ORG", config.SSDPSearchPort.ToString());
response.SetHeader("LOCATION", config.GetRootDeviceDescriptionURL(rootDevice));
byte[] bytes = response.Encode();
NetworkHelper.MulticastMessage(config.SSDP_UDP_UnicastSocket, config.SSDPMulticastAddress, bytes);
}
}
