Service Discovery

ServiceDiscovery implements RFC 6763 - DNS-Based Service Discovery. It is used to find services and service instances on the link local network(s).

Finding all services

QueryAllServices is used to find the services. The ServiceDiscovered event is raised each time a service is discovered.

using Makaretu.Dns;

var sd = new ServiceDiscovery();
sd.ServiceDiscovered += (s, serviceName) =>
{
    Console.WriteLine($"service '{serviceName}'");
};
sd.QueryAllServices();

Finding service instances

QueryServiceInstances is used to find the all the instances of a service. The ServiceInstanceDiscovered event is raised each time a service instance is discovered.

using Makaretu.Dns;

var sd = new ServiceDiscovery();
sd.ServiceInstanceDiscovered += (s, e) =>
{
    Console.WriteLine($"service instance '{e.ServiceInstanceName}'");
};
sd.QueryServiceInstances("_myservice");

Advertising

Create a ServiceProfile and then Advertise it. Any queries for the service or service instance will be answered with information from the profile.

using Makaretu.Dns;

var profile = new ServiceProfile("x", "_myservice._udp", 1024);
var sd = new ServiceDiscovery();
sd.Advertise(profile);