private DeviceDiscoveryReportItem ParseServiceAnnouncement(ServiceAnnouncement announcement)
{
IPAddress localInterface = IPAddress.Any;
// Retrieve local interface address
// TODO: This will need some IPv6 love at some point
if (announcement.NetworkInterface.Information.OperationalStatus == System.Net.NetworkInformation.OperationalStatus.Up)
{
var ipv4Addresses = announcement.NetworkInterface.Information.GetIPProperties().UnicastAddresses.Where((ad) => ad.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork);
localInterface = ipv4Addresses.FirstOrDefault().Address;
}
// Retrieve version string
var versionTempString = announcement.Txt.Where((kvp) => kvp.Contains("ve=")).FirstOrDefault();
int versionNumber = 2;
if (string.IsNullOrEmpty(versionTempString) == false)
{
versionNumber = int.Parse(versionTempString.Split('=')[1]);
}
// Retrieve device ID
var idTempString = announcement.Txt.Where((kvp) => kvp.Contains("id=")).FirstOrDefault();
string Id = "";
if (string.IsNullOrEmpty(idTempString) == false)
{
Id = idTempString.Split('=')[1];
}
else
{
// Log.Error(string.Format("Unable to get ID of device {0}", e.Announcement.Hostname));
return null;
}
// Optional: Verify that it's a Chromecast device
var tempDeviceType = announcement.Txt.Where((kvp) => kvp.Contains("md=")).FirstOrDefault();
var deviceType = DeviceType.Generic;
if (string.IsNullOrEmpty(tempDeviceType) == false && tempDeviceType.Split('=')[1] == "Chromecast")
{
deviceType = DeviceType.Chromecast;
}
else
{
deviceType = DeviceType.Generic;
}
// Build baseUrl
// This might not be right as there URI scheme could be something else.
var scheme = "http";
var address = announcement.Addresses.First();
var port = announcement.Port;
var uri = new Uri(string.Format("{0}://{1}:{2}", scheme, address, port));
var report = new ChromecastV2DeviceDiscoveryReportItem()
{
DeviceType = deviceType,
Version = versionNumber,
Id = Id,
Name = announcement.Hostname,
EndPoint = new IPEndPoint(announcement.Addresses.First(), announcement.Port),
Interface = localInterface,
BaseUri = uri,
};
return report;
}
