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## org.teleal.cling.transport.spi
Interface NetworkAddressFactory

All Known Implementing Classes:
  AndroidNetworkAddressFactory, NetworkAddressFactoryImpl

    public interface NetworkAddressFactory

Configuration utility for network interfaces and addresses.

An implementation has to be thread-safe.

Author:
  Christian Bauer

Field Summary
`static String` | `SYSTEM_PROPERTY_NET_ADDRESSES`
`static String` | `SYSTEM_PROPERTY_NET_IFACES`

Method Summary
`InetAddress[]` | `getBindAddresses()`
`InetAddress` | `getBroadcastAddress(InetAddress inetAddress)`
`byte[]` | `getHardwareAddress(InetAddress inetAddress)`
`InetAddress` | `getLocalAddress(NetworkInterface networkInterface, boolean isIPv6, InetAddress remoteAddress)` Best-effort attempt finding a reachable local address for a given remote host.
`InetAddress` | `getMulticastGroup()`
`int` | `getMulticastPort()`
`NetworkInterface[]` | `getNetworkInterfaces()`
`int` | `getStreamListenPort()`

Field Detail

### SYSTEM_PROPERTY_NET_IFACES

    static final String SYSTEM_PROPERTY_NET_IFACES

See Also:
  Constant Field Values

### SYSTEM_PROPERTY_NET_ADDRESSES

    static final String SYSTEM_PROPERTY_NET_ADDRESSES

See Also:
  Constant Field Values

Method Detail

### getMulticastGroup

    InetAddress getMulticastGroup()

  Returns:
    The UDP multicast group to join.

### getMulticastPort

    int getMulticastPort()

  Returns:
    The UDP multicast port to listen on.

### getStreamListenPort

    int getStreamListenPort()

  Returns:
    The TCP (HTTP) stream request port to listen on.

### getNetworkInterfaces

    NetworkInterface[] getNetworkInterfaces()

  Returns:
    The local network interfaces on which multicast groups will be joined.

### getBindAddresses

    InetAddress[] getBindAddresses()

  Returns:
    The local addresses of the network interfaces bound to sockets listening for unicast datagrams and TCP requests.

### getHardwareAddress

    byte[] getHardwareAddress(InetAddress inetAddress)

  Parameters:
    `inetAddress` - An address of a local network interface.
  Returns:
    The MAC hardware address of the network interface or `null` if no hardware address could be obtained.

### getBroadcastAddress

    InetAddress getBroadcastAddress(InetAddress inetAddress)

  Parameters:
    `inetAddress` - An address of a local network interface.
  Returns:
    The broadcast address of the network (interface) or `null` if no broadcast address could be obtained.

### getLocalAddress

    InetAddress getLocalAddress(NetworkInterface networkInterface,
                                boolean isIPv6,
                                InetAddress remoteAddress)
                                throws IllegalStateException

  Best-effort attempt finding a reachable local address for a given remote host.

  This method is called whenever a multicast datagram has been received. We need to be able to communicate with the sender using UDP unicast and we need to tell the sender how we are reachable with TCP requests. We need a local address that is in the same subnet as the senders address, that is reachable from the senders point of view.

  Parameters:
    `networkInterface` - The network interface to examine.
    `isIPv6` - True if the given remote address is an IPv6 address.
    `remoteAddress` - The remote address for which to find a local address in the same subnet.
  Returns:
    A local address that is reachable from the given remote address.
  Throws:
    `IllegalStateException` - If no local address reachable by the remote address has been found.

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