string GetZeroconfHostKey(NSNetService service)
{
StringBuilder sb = new StringBuilder();
if (service.Addresses != null)
{
foreach (NSData address in service.Addresses)
{
if (address != null)
{
Sockaddr saddr = Sockaddr.CreateSockaddr(address.Bytes);
IPAddress ipAddr = Sockaddr.CreateIPAddress(saddr);
if (ipAddr != null)
{
sb.Append((sb.Length == 0 ? ipAddr.ToString() : $";{ipAddr.ToString()}"));
}
}
else
{
Console.WriteLine($"{nameof(GetZeroconfHostKey)}: Got null entry in NSNetService.Addresses, Service {service?.Name}");
}
}
}
else
{
Console.WriteLine($"{nameof(GetZeroconfHostKey)}: NSNetService.Addresses is null, Service {service?.Name}");
}
return(sb.ToString());
}
ZeroconfHost GetOrCreateZeroconfHost(NSNetService service)
{
ZeroconfHost host;
string hostKey = GetZeroconfHostKey(service);
lock (zeroconfHostDict)
{
if (!zeroconfHostDict.TryGetValue(hostKey, out host))
{
host = new ZeroconfHost();
host.DisplayName = service.Name;
List <string> ipAddrList = new List <string>();
foreach (NSData address in service.Addresses)
{
Sockaddr saddr = Sockaddr.CreateSockaddr(address.Bytes);
IPAddress ipAddr = Sockaddr.CreateIPAddress(saddr);
if (ipAddr != null)
{
ipAddrList.Add(ipAddr.ToString());
}
}
host.IPAddresses = ipAddrList;
host.Id = host.IPAddress;
zeroconfHostDict[hostKey] = host;
}
}
return(host);
}