How to use

getInterface

method

in

javax.jmdns.impl.HostInfo

@Override
public String toString() {
  StringBuilder buf = new StringBuilder(1024);
  buf.append("local host info[");
  buf.append(getName() != null ? getName() : "no name");
  buf.append(", ");
  buf.append(getInterface() != null ? getInterface().getDisplayName() : "???");
  buf.append(":");
  buf.append(getInetAddress() != null ? getInetAddress().getHostAddress() : "no address");
  buf.append(", ");
  buf.append(_state);
  buf.append("]");
  return buf.toString();
}

@Override
public String toString() {
  StringBuilder buf = new StringBuilder(1024);
  buf.append("local host info[");
  buf.append(getName() != null ? getName() : "no name");
  buf.append(", ");
  buf.append(getInterface() != null ? getInterface().getDisplayName() : "???");
  buf.append(":");
  buf.append(getInetAddress() != null ? getInetAddress().getHostAddress() : "no address");
  buf.append(", ");
  buf.append(_state);
  buf.append("]");
  return buf.toString();
}

@Override
public String toString() {
  final StringBuilder sb = new StringBuilder(1024);
  sb.append("local host info[");
  sb.append(getName() != null ? getName() : "no name");
  sb.append(", ");
  sb.append(getInterface() != null ? getInterface().getDisplayName() : "???");
  sb.append(":");
  sb.append(getInetAddress() != null ? getInetAddress().getHostAddress() : "no address");
  sb.append(", ");
  sb.append(_state);
  sb.append("]");
  return sb.toString();
}

@Override
public String toString() {
  StringBuilder buf = new StringBuilder(1024);
  buf.append("local host info[");
  buf.append(getName() != null ? getName() : "no name");
  buf.append(", ");
  buf.append(getInterface() != null ? getInterface().getDisplayName() : "???");
  buf.append(":");
  buf.append(getInetAddress() != null ? getInetAddress().getHostAddress() : "no address");
  buf.append(", ");
  buf.append(_state);
  buf.append("]");
  return buf.toString();
}

private void openMulticastSocket(HostInfo hostInfo) throws IOException {
  if (_group == null) {
    _group = InetAddress.getByName(DNSConstants.MDNS_GROUP);
  }
  if (_socket != null) {
    this.closeMulticastSocket();
  }
  _socket = new MulticastSocket(DNSConstants.MDNS_PORT);
  if ((hostInfo != null) && (hostInfo.getInterface() != null)) {
    try {
      _socket.setNetworkInterface(hostInfo.getInterface());
    } catch (SocketException e) {
      if (logger.isLoggable(Level.FINE)) {
        logger.fine("openMulticastSocket() Set network interface exception: " + e.getMessage());
      }
    }
  }
  _socket.setTimeToLive(255);
  _socket.joinGroup(_group);
}

if ((hostInfo != null) && (hostInfo.getInterface() != null)) {
  final SocketAddress multicastAddr = new InetSocketAddress(_group, DNSConstants.MDNS_PORT);
  _socket.setNetworkInterface(hostInfo.getInterface());
  logger.trace("Trying to joinGroup({}, {})", multicastAddr, hostInfo.getInterface());
  _socket.joinGroup(multicastAddr, hostInfo.getInterface());
} else {
  logger.trace("Trying to joinGroup({})", _group);

private void openMulticastSocket(HostInfo hostInfo) throws IOException {
  Log.i("mDNS","openMulticastSocket");
  if (_group == null) {
    if (hostInfo.getInetAddress() instanceof Inet6Address) {
      _group = InetAddress.getByName(DNSConstants.MDNS_GROUP_IPV6);
    } else {
      _group = InetAddress.getByName(DNSConstants.MDNS_GROUP);
    }
  }
  if (_socket != null) {
    this.closeMulticastSocket();
  }
  _socket = new MulticastSocket(DNSConstants.MDNS_PORT);
  if ((hostInfo != null) && (hostInfo.getInterface() != null)) {
    try {
      _socket.setNetworkInterface(hostInfo.getInterface());
    } catch (SocketException e) {
      Log.i("mDNS","Error:"+e);
      if (logger.isLoggable(Level.FINE)) {
        logger.fine("openMulticastSocket() Set network interface exception: " + e.getMessage());
      }
    }
  }
  
  _socket.setTimeToLive(255);
  _socket.joinGroup(_group);
}

private void openMulticastSocket(HostInfo hostInfo) throws IOException {
  if (_group == null) {
    if (hostInfo.getInetAddress() instanceof Inet6Address) {
      _group = InetAddress.getByName(DNSConstants.MDNS_GROUP_IPV6);
    } else {
      _group = InetAddress.getByName(DNSConstants.MDNS_GROUP);
    }
  }
  if (_socket != null) {
    this.closeMulticastSocket();
  }
  _socket = new MulticastSocket(DNSConstants.MDNS_PORT);
  if ((hostInfo != null) && (hostInfo.getInterface() != null)) {
    try {
      _socket.setNetworkInterface(hostInfo.getInterface());
    } catch (SocketException e) {
      if (logger.isLoggable(Level.FINE)) {
        logger.fine("openMulticastSocket() Set network interface exception: " + e.getMessage());
      }
    }
  }
  _socket.setTimeToLive(255);
  _socket.joinGroup(_group);
}