9792b79c56
- prototype - between client and server, allow to capture all exchanges and potentially change them - created to capture server maps in laby - first test get only MapBlock, support version serialization version 28 - prepartion for 29 with zstd but untested. # Conflicts: # fetch_dependencies.sh
91 lines
2.6 KiB
Java
91 lines
2.6 KiB
Java
package org.artisanlogiciel.games.minetest.net;
|
|
|
|
import org.artisanlogiciel.games.minetest.core.PacketException;
|
|
import org.artisanlogiciel.games.minetest.core.Serialize;
|
|
|
|
import java.util.ArrayList;
|
|
|
|
public class IncomingSplitBuffer {
|
|
|
|
int m_seqnum;
|
|
int m_chunk_count;
|
|
int m_chunk_num;
|
|
|
|
// number of chunks
|
|
int m_got = 0;
|
|
|
|
NetworkPacket m_list[] = null;
|
|
BufferedPacket m_reassembled = null;
|
|
|
|
BufferedPacket insert(NetworkPacket networkPacket)
|
|
throws PacketException
|
|
{
|
|
|
|
byte[] buffer = networkPacket.getBuffer();
|
|
int length = networkPacket.getLength();
|
|
int offset = networkPacket.getOffset();
|
|
|
|
int type = Serialize.readU8(buffer , offset, length);
|
|
int seqnum = Serialize.readU16(buffer, offset + 1, length);
|
|
// total number of chunk
|
|
int chunk_count = Serialize.readU16(buffer, offset + 3, length);
|
|
// this chunk number
|
|
int chunk_num = Serialize.readU16(buffer, offset+ 5, length);
|
|
|
|
System.out.println("Split length " + length + " type " + type + " seqnum " + seqnum + " chunk_num/chunk_count " + chunk_num + "/" + chunk_count );
|
|
|
|
// move to next header
|
|
networkPacket.addOffset(7);
|
|
|
|
if (m_reassembled != null)
|
|
{
|
|
return m_reassembled;
|
|
}
|
|
|
|
if (m_list == null )
|
|
{
|
|
m_list = new NetworkPacket[chunk_count];
|
|
}
|
|
|
|
if ( chunk_num < chunk_count && (m_list[chunk_num] == null) )
|
|
{
|
|
m_list[chunk_num] = networkPacket;
|
|
m_got ++;
|
|
}
|
|
//todo seqnum
|
|
m_seqnum = seqnum;
|
|
|
|
// fully obtained
|
|
if ( m_got == chunk_count )
|
|
{
|
|
reassemble();
|
|
}
|
|
|
|
return m_reassembled;
|
|
|
|
}
|
|
|
|
private void reassemble()
|
|
{
|
|
// keep first header since result is a valid BufferedPacket
|
|
int fullLength = BufferedPacket.BASE_HEADER_SIZE;
|
|
for (NetworkPacket networkPacket : m_list )
|
|
{
|
|
fullLength += networkPacket.getLength() - networkPacket.getOffset();
|
|
}
|
|
byte[] reassembled = new byte[fullLength];
|
|
NetworkPacket first = m_list[0];
|
|
System.arraycopy(first.getBuffer(),0,reassembled,0,BufferedPacket.BASE_HEADER_SIZE);
|
|
int offset = BufferedPacket.BASE_HEADER_SIZE;
|
|
for (NetworkPacket networkPacket : m_list )
|
|
{
|
|
int dataLength = networkPacket.getLength() - networkPacket.getOffset();
|
|
System.arraycopy(networkPacket.getBuffer(), networkPacket.getOffset(),reassembled,offset,dataLength);
|
|
offset+=dataLength;
|
|
}
|
|
m_reassembled = new BufferedPacket(reassembled);
|
|
|
|
}
|
|
|
|
}
|