Forked version of brutella/dnssd
This library implements Multicast DNS and DNS-Based Service Discovery to provide zero-configuration operations. It lets you announce and find services in a specific link-local domain.
The following code creates a service with name "My Website._http._tcp.local." for the host "My Computer" which has all IPs from network interface "eth0". The service is added to a responder.
import (
"context"
"github.com/hkontrol/dnssd"
)
cfg := dnssd.Config{
Name: "My Website",
Type: "_http._tcp",
Domain: "local",
Host: "My Computer",
Ifaces: []string{"eth0"},,
Port: 12345,
}
sv, _ := dnssd.NewService(cfg)
In most cases you only need to specify the name, type and port of the service.
cfg := dnssd.Config{
Name: "My Website",
Type: "_http._tcp",
Port: 12345,
}
sv, _ := dnssd.NewService(cfg)
Then you create a responder and add the service to it.
rp, _ := dnssd.NewResponder()
hdl, _ := rp.Add(sv)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
rp.Respond(ctx)
When calling Respond
the responder probes for the service instance name and host name to be unqiue in the network.
Once probing is finished, the service will be announced.
Once a service is added to a responder, you can use the hdl
to update properties.
hdl.UpdateText(map[string]string{"key1": "value1", "key2": "value2"}, rsp)
There are examples in the _cmd
directory to register services, resolve service instances and to browse for service types.
- Support hot plugging
- Support negative responses (RFC6762 6.1)
- Handle txt records case insensitive
- Remove outdated services from cache regularly
- Make sure that hostnames are FQDNs
dnssd is available under the MIT license. See the LICENSE file for more info.