net.i2p.router.transport.udp
Class MTU
java.lang.Object
net.i2p.router.transport.udp.MTU
abstract class MTU
- extends Object
Get the MTU for the network interface of an address.
Not available until Java 6 / Android API 9.
- Since:
- 0.9.2
Constructor Summary |
MTU()
|
Method Summary |
static int |
getMTU(InetAddress ia)
The MTU for the socket interface, if available. |
static int |
rectify(boolean isIPv6,
int mtu)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
MTU
MTU()
getMTU
public static int getMTU(InetAddress ia)
- The MTU for the socket interface, if available.
Not available for Java 5.
Note that we don't return the value for the default interface if
we can't find the address. Finding the default interface is hard,
altough we could perhaps just look for the first non-loopback address.
But the MTU of the default route probably isn't relevant.
- Parameters:
ia
- null ok
- Returns:
- 0 if Java 5, or if not bound to an address;
limited to range MIN_MTU to LARGE_MTU.
rectify
public static int rectify(boolean isIPv6,
int mtu)
- Returns:
- min of PeerState.MIN_MTU, max of PeerState.LARGE_MTU,
rectified so rv % 16 == 12 (IPv4)
or rv % 16 == 0 (IPv6)