ExSsdp

Description

It's an extension for the RSSDP library (the implementation of the ssdp protocol)

It is not a complete implementation of the UPNP;

In which cases you can use it:

• If you want to publish a description of your device on the Http server
• If you want to publish devices on specified networks
• If you want to search devices on specified networks
• Not all upnp devices send 'byebye' notification to the network, you can activate the monitoring mode to check availability of device description

Example:

Publish Device

Create publisher on all adapters with any available port

var devicePublisher = AggregatableDevicePublisher.Create();
devicePublisher.AddDevice(ssdpDevice);

Create publisher with specified ip addresses, or on all adapters

int port = 8090;
var unicastAddresses = new List<string> { "fe80::8c8:c972:5205:278e" };
var ssdpDevicePublisherFactory = new SsdpDevicePublisherFactory();
var httpDeviceInfoPublisher = new HttpDeviceInfoPublisher(port);
var devicePublisher = new AggregatableDevicePublisher(unicastAddresses, ssdpDevicePublisherFactory, httpDeviceInfoPublisher, port);
       
       
int port = 8090;
var networkInfoProvider = new NetworkInfoProvider();
var ssdpDevicePublisherFactory = new SsdpDevicePublisherFactory();
var httpDeviceInfoPublisher = new HttpDeviceInfoPublisher(port);
var devicePublisher = new AggregatableDevicePublisher(networkInfoProvider, ssdpDevicePublisherFactory, httpDeviceInfoPublisher, port);

Description of devices will be available on specified ipaddresses and information about location of the device description will be set in the ssdp packet

For example:

The description of the device will be available at this address: http://[fe80::f54c:62dd:f94b:3a9c]:1024/upnp/description/7331cc99-a757-46a5-bd99-05ece173ce38

And will have the following description:

<root xmlns="urn:schemas-upnp-org:device-1-0">
<specVersion>
<major>1</major>
<minor>0</minor>
</specVersion>
<device>
<deviceType>urn:test-namespace:device:test-device-type:1</deviceType>
<friendlyName>test-friendly-name</friendlyName>
<manufacturer>manufacturer</manufacturer>
<modelName>test-model-name</modelName>
<UDN>uuid:7331cc99-a757-46a5-bd99-05ece173ce38</UDN>
</device>
</root>

Search and listen for notifications:

var deviceLocator = AggregatableDeviceLocator.Create();
deviceNotificationListener.IsMonitoringEnabled = true;
     
var deviceLocator.DeviceAvailable += OnDeviceAvailable;
var deviceLocator.DeviceUnavailable += OnDeviceUnavailable;
        
var deviceLocator.StartListeningForNotifications();
        
var devices = await deviceLocator.SearchAsync();