Class BonjourBrowser

java.lang.Object
com.codename1.io.bonjour.BonjourBrowser
public final class BonjourBrowser extends Object

Browses the local network for Bonjour / mDNS services.

Bonjour ("zeroconf" / "mDNS-SD") lets clients find network services -- a printer, a music server, another instance of your app -- without knowing their IP address in advance. Services are advertised under a type such as _http._tcp. or your own private _myapp._tcp.. A BonjourBrowser watches for services of one type and notifies the listener whenever a service comes online or goes away.

Platform support
  • Android: android.net.nsd.NsdManager.
  • iOS: NSNetServiceBrowser + NSNetService. The build pipeline injects NSLocalNetworkUsageDescription and the service type into NSBonjourServices so iOS 14+ doesn't block discovery.
  • Simulator: JmDNS is used when present on the classpath; otherwise discovery is a no-op and the listener is told the platform is unsupported.
Example
BonjourBrowser browser = BonjourBrowser.browse("_http._tcp.", new BonjourServiceListener() {
    public void onServiceResolved(BonjourService s) {
        Log.p("Found " + s.getName() + " at " + s.getHost() + ":" + s.getPort());
    }
    public void onServiceLost(BonjourService s) { /* ... */ }
    public void onBrowseError(Throwable t) { Log.e(t); }
});

// when finished
browser.stop();

  • Method Details

    • browse

      public static BonjourBrowser browse(String type, BonjourServiceListener listener)
      Starts browsing for type and returns a handle to stop the search. type must be in mDNS form, e.g. _http._tcp. (trailing dot optional). listener is invoked on the EDT.

    • isSupported

      public static boolean isSupported()
      true if the platform implements Bonjour at all.

    • getType

      public String getType()
      The service type passed to browse(...).

    • stop

      public void stop()
      Stops this browser. Idempotent.