mirror of
https://github.com/irungentoo/toxcore.git
synced 2024-03-22 13:30:51 +08:00
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/* Lossless_UDP.h
|
|
*
|
|
* An implementation of the Lossless_UDP protocol as seen in docs/Lossless_UDP.txt
|
|
*
|
|
|
|
Copyright (C) 2013 Tox project All Rights Reserved.
|
|
|
|
This file is part of Tox.
|
|
|
|
Tox is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Tox 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Tox. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
#ifndef LOSSLESS_UDP_H
|
|
#define LOSSLESS_UDP_H
|
|
|
|
#include "network.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* maximum length of the data in the data packets */
|
|
#define MAX_DATA_SIZE 1024
|
|
|
|
|
|
|
|
/* Functions */
|
|
|
|
/* initialize a new connection to ip_port
|
|
returns an integer corresponding to the connection id.
|
|
return -1 if it could not initialize the connection.
|
|
if there already was an existing connection to that ip_port return its number. */
|
|
int new_connection(IP_Port ip_port);
|
|
|
|
/* get connection id from IP_Port
|
|
return -1 if there are no connections like we are looking for
|
|
return id if it found it */
|
|
int getconnection_id(IP_Port ip_port);
|
|
|
|
/* returns an integer corresponding to the next connection in our imcoming connection list
|
|
return -1 if there are no new incoming connections in the list. */
|
|
int incoming_connection();
|
|
|
|
|
|
/* return -1 if it could not kill the connection.
|
|
return 0 if killed successfully */
|
|
int kill_connection(int connection_id);
|
|
|
|
/* kill connection in seconds seconds.
|
|
return -1 if it can not kill the connection.
|
|
return 0 if it will kill it */
|
|
int kill_connection_in(int connection_id, uint32_t seconds);
|
|
|
|
/* returns the ip_port of the corresponding connection.
|
|
return 0 if there is no such connection. */
|
|
IP_Port connection_ip(int connection_id);
|
|
|
|
/* returns the id of the next packet in the queue
|
|
return -1 if no packet in queue */
|
|
char id_packet(int connection_id);
|
|
|
|
/* return 0 if there is no received data in the buffer.
|
|
return length of received packet if successful */
|
|
int read_packet(int connection_id, uint8_t * data);
|
|
|
|
|
|
/* return 0 if data could not be put in packet queue
|
|
return 1 if data was put into the queue */
|
|
int write_packet(int connection_id, uint8_t * data, uint32_t length);
|
|
|
|
|
|
|
|
/* returns the number of packets in the queue waiting to be successfully sent. */
|
|
uint32_t sendqueue(int connection_id);
|
|
|
|
|
|
/* returns the number of packets in the queue waiting to be successfully read with read_packet(...) */
|
|
uint32_t recvqueue(int connection_id);
|
|
|
|
|
|
/* check if connection is connected
|
|
return 0 no.
|
|
return 1 if attempting handshake
|
|
return 2 if handshake is done
|
|
return 3 if fully connected
|
|
return 4 if timed out and wating to be killed */
|
|
int is_connected(int connection_id);
|
|
|
|
|
|
/* Call this function a couple times per second
|
|
It's the main loop. */
|
|
void doLossless_UDP();
|
|
|
|
|
|
/* if we receive a Lossless_UDP packet we call this function so it can be handled.
|
|
return 0 if packet is handled correctly.
|
|
return 1 if it didn't handle the packet or if the packet was shit. */
|
|
int LosslessUDP_handlepacket(uint8_t * packet, uint32_t length, IP_Port source);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|