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- /*
- Minetest
- Copyright (C) 2013-2017 celeron55, Perttu Ahola <celeron55@gmail.com>
- Copyright (C) 2017 celeron55, Loic Blot <loic.blot@unix-experience.fr>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #pragma once
- #include <cassert>
- #include "threading/thread.h"
- #include "connection.h"
- namespace con
- {
- class Connection;
- class ConnectionSendThread : public Thread
- {
- public:
- friend class UDPPeer;
- ConnectionSendThread(unsigned int max_packet_size, float timeout);
- void *run();
- void Trigger();
- void setParent(Connection *parent)
- {
- assert(parent != NULL); // Pre-condition
- m_connection = parent;
- }
- void setPeerTimeout(float peer_timeout) { m_timeout = peer_timeout; }
- private:
- void runTimeouts(float dtime);
- void rawSend(const BufferedPacket &packet);
- bool rawSendAsPacket(session_t peer_id, u8 channelnum, SharedBuffer<u8> data,
- bool reliable);
- void processReliableCommand(ConnectionCommand &c);
- void processNonReliableCommand(ConnectionCommand &c);
- void serve(Address bind_address);
- void connect(Address address);
- void disconnect();
- void disconnect_peer(session_t peer_id);
- void send(session_t peer_id, u8 channelnum, SharedBuffer<u8> data);
- void sendReliable(ConnectionCommand &c);
- void sendToAll(u8 channelnum, SharedBuffer<u8> data);
- void sendToAllReliable(ConnectionCommand &c);
- void sendPackets(float dtime);
- void sendAsPacket(session_t peer_id, u8 channelnum, SharedBuffer<u8> data,
- bool ack = false);
- void sendAsPacketReliable(BufferedPacket &p, Channel *channel);
- bool packetsQueued();
- Connection *m_connection = nullptr;
- unsigned int m_max_packet_size;
- float m_timeout;
- std::queue<OutgoingPacket> m_outgoing_queue;
- Semaphore m_send_sleep_semaphore;
- unsigned int m_iteration_packets_avaialble;
- unsigned int m_max_commands_per_iteration = 1;
- unsigned int m_max_data_packets_per_iteration;
- unsigned int m_max_packets_requeued = 256;
- };
- class ConnectionReceiveThread : public Thread
- {
- public:
- ConnectionReceiveThread(unsigned int max_packet_size);
- void *run();
- void setParent(Connection *parent)
- {
- assert(parent); // Pre-condition
- m_connection = parent;
- }
- private:
- void receive();
- // Returns next data from a buffer if possible
- // If found, returns true; if not, false.
- // If found, sets peer_id and dst
- bool getFromBuffers(session_t &peer_id, SharedBuffer<u8> &dst);
- bool checkIncomingBuffers(
- Channel *channel, session_t &peer_id, SharedBuffer<u8> &dst);
- /*
- Processes a packet with the basic header stripped out.
- Parameters:
- packetdata: Data in packet (with no base headers)
- peer_id: peer id of the sender of the packet in question
- channelnum: channel on which the packet was sent
- reliable: true if recursing into a reliable packet
- */
- SharedBuffer<u8> processPacket(Channel *channel, SharedBuffer<u8> packetdata,
- session_t peer_id, u8 channelnum, bool reliable);
- SharedBuffer<u8> handlePacketType_Control(Channel *channel,
- SharedBuffer<u8> packetdata, Peer *peer, u8 channelnum,
- bool reliable);
- SharedBuffer<u8> handlePacketType_Original(Channel *channel,
- SharedBuffer<u8> packetdata, Peer *peer, u8 channelnum,
- bool reliable);
- SharedBuffer<u8> handlePacketType_Split(Channel *channel,
- SharedBuffer<u8> packetdata, Peer *peer, u8 channelnum,
- bool reliable);
- SharedBuffer<u8> handlePacketType_Reliable(Channel *channel,
- SharedBuffer<u8> packetdata, Peer *peer, u8 channelnum,
- bool reliable);
- struct PacketTypeHandler
- {
- SharedBuffer<u8> (ConnectionReceiveThread::*handler)(Channel *channel,
- SharedBuffer<u8> packet, Peer *peer, u8 channelnum,
- bool reliable);
- };
- static const PacketTypeHandler packetTypeRouter[PACKET_TYPE_MAX];
- Connection *m_connection = nullptr;
- };
- }
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