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PacketPing.java
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PacketPing.java
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package net.ME1312.SubData.Client.Protocol.Internal;
import net.ME1312.Galaxi.Library.Util;
import net.ME1312.SubData.Client.Library.PingResponse;
import net.ME1312.SubData.Client.Protocol.Forwardable;
import net.ME1312.SubData.Client.Protocol.PacketStreamIn;
import net.ME1312.SubData.Client.Protocol.PacketStreamOut;
import net.ME1312.SubData.Client.SubDataSender;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Calendar;
import java.util.HashMap;
import java.util.UUID;
import java.util.function.Consumer;
/**
* Ping Packet
*/
public class PacketPing implements Forwardable, PacketStreamOut, PacketStreamIn {
static HashMap<UUID, Consumer<PingResponse>[]> callbacks = new HashMap<UUID, Consumer<PingResponse>[]>();
static HashMap<UUID, PacketPing> data = new HashMap<UUID, PacketPing>();
private UUID tracker;
long init, queue;
/**
* New PacketPing (In)
*/
public PacketPing() {}
/**
* New PacketPing (Out)
*
* @param callback Callbacks
*/
@SafeVarargs
public PacketPing(Consumer<PingResponse>... callback) {
Util.nullpo((Object) callback);
init = Calendar.getInstance().getTime().getTime();
callbacks.put(tracker = Util.getNew(callbacks.keySet(), UUID::randomUUID), callback);
}
@Override
public void send(SubDataSender sender, OutputStream out) throws Throwable {
data.put(tracker, this);
queue = Calendar.getInstance().getTime().getTime();
out.write(ByteBuffer.allocate(8).order(ByteOrder.BIG_ENDIAN).putLong(tracker.getMostSignificantBits()).array());
out.write(ByteBuffer.allocate(8).order(ByteOrder.BIG_ENDIAN).putLong(tracker.getLeastSignificantBits()).array());
out.write(ByteBuffer.allocate(8).order(ByteOrder.BIG_ENDIAN).putLong(init).array()); // Object Initialization (Local) [0]
out.write(ByteBuffer.allocate(8).order(ByteOrder.BIG_ENDIAN).putLong(queue).array()); // On Send (Local) [1]
out.close();
}
@SuppressWarnings("unchecked")
@Override
public void receive(SubDataSender sender, InputStream in) throws Throwable {
ByteArrayOutputStream pending = new ByteArrayOutputStream();
long id_p1 = -1, id_p2 = -1, unused = -1;
int b, position = 0;
while (position < 32 && (b = in.read()) != -1) {
position++;
pending.write(b);
switch (position) {
case 8:
id_p1 = ByteBuffer.wrap(pending.toByteArray()).order(ByteOrder.BIG_ENDIAN).getLong();
pending.reset();
break;
case 16:
id_p2 = ByteBuffer.wrap(pending.toByteArray()).order(ByteOrder.BIG_ENDIAN).getLong();
pending.reset();
break;
case 24: // These bytes are read for consistency reasons.
case 32: // As the name suggests, they go unused.
unused = ByteBuffer.wrap(pending.toByteArray()).order(ByteOrder.BIG_ENDIAN).getLong();
pending.reset();
break;
}
}
in.close();
sender.sendPacket(new PacketPingResponse(new UUID(id_p1, id_p2)));
Long.valueOf(unused);
}
}