package org.klomp.snark.dht;
/*
* GPLv2
*/
import net.i2p.I2PAppContext;
import net.i2p.data.ByteArray;
/**
* Used for both incoming and outgoing message IDs
*
* @since 0.9.2
* @author zzz
*/
class MsgID extends ByteArray {
/** BEP 5: 2 bytes, incremented */
private static final int MY_TOK_LEN = 8;
private static final int MAX_TOK_LEN = 16;
/** outgoing - generate a random ID */
public MsgID(I2PAppContext ctx) {
super(null);
byte[] data = new byte[MY_TOK_LEN];
ctx.random().nextBytes(data);
setData(data);
setValid(MY_TOK_LEN);
}
/** incoming - save the ID (arbitrary length) */
public MsgID(byte[] data) {
super(data);
// lets not get carried away
if (data.length > MAX_TOK_LEN)
throw new IllegalArgumentException();
}
}