org.scion.jpan.internal

Class Shim

java.lang.Object

org.scion.jpan.internal.Shim

All Implemented Interfaces:

AutoCloseable

public class Shim
extends Object
implements AutoCloseable

The SHIM acts similar to the SHIM component of a normal SCION installation: link

The SHIM will try to install itself on port 30041. If that is not possible, it will optimistically assume that another SHIM is already running there.

The SHIM responds to SCMP echo request. All other packets will be forwarded to the destination address encoded in the SCION header. If parsing of the SCION header fails, the packet is dropped.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Shim.Builder

Method Summary

Modifier and Type	Method and Description
void	close()
void	forward(ByteBuffer buf, DatagramChannel channel)
static void	install(ScionService service) Start the SHIM.
static boolean	isInstalled()
void	signalReadiness()
static void	uninstall()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

install

public static void install(ScionService service)

Start the SHIM. The SHIM also provides an SCMP echo responder.

uninstall

public static void uninstall()

isInstalled

public static boolean isInstalled()

signalReadiness

public void signalReadiness()

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Throws:

IOException

forward

public void forward(ByteBuffer buf,
                    DatagramChannel channel)