Provides I/O sockets to address and resolve targets for I/O operations. Similar to network sockets, I/O sockets are a very powerfuly concept: They support input, output, copying, caching, proxying etc. of the contents of a generic local target and an optional peer target. By using I/O sockets, you'll never have to write a fast {@link de.schlichtherle.truezip.socket.IOSocket#copy copy} routine again.