2018-04-13 18:23:45 +02:00
|
|
|
/*
|
|
|
|
netchan.h - net channel abstraction layer
|
|
|
|
Copyright (C) 2007 Uncle Mike
|
|
|
|
|
|
|
|
This program 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.
|
|
|
|
|
|
|
|
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 General Public License for more details.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef NET_MSG_H
|
|
|
|
#define NET_MSG_H
|
|
|
|
|
|
|
|
/*
|
|
|
|
==========================================================
|
|
|
|
|
|
|
|
ELEMENTS COMMUNICATED ACROSS THE NET
|
|
|
|
|
|
|
|
==========================================================
|
|
|
|
*/
|
2018-04-23 20:36:33 +02:00
|
|
|
#include "crtlib.h"
|
2018-04-13 18:23:45 +02:00
|
|
|
#include "net_buffer.h"
|
|
|
|
|
|
|
|
// 0 == regular, 1 == file stream
|
2021-01-03 02:28:45 +01:00
|
|
|
#define MAX_STREAMS 2
|
2018-04-13 18:23:45 +02:00
|
|
|
|
|
|
|
// flow control bytes per second limits
|
2021-01-03 02:28:45 +01:00
|
|
|
#define MAX_RATE 100000.0f
|
2018-04-13 18:23:45 +02:00
|
|
|
#define MIN_RATE 1000.0f
|
|
|
|
|
|
|
|
// default data rate
|
|
|
|
#define DEFAULT_RATE (9999.0f)
|
|
|
|
|
|
|
|
// NETWORKING INFO
|
|
|
|
|
|
|
|
// This is the packet payload without any header bytes (which are attached for actual sending)
|
|
|
|
#define NET_MAX_PAYLOAD MAX_INIT_MSG
|
|
|
|
|
|
|
|
// Theoretically maximum size of UDP-packet without header and hardware-specific data
|
2020-02-08 16:40:34 +01:00
|
|
|
#define NET_MAX_FRAGMENT 65535
|
2018-04-13 18:23:45 +02:00
|
|
|
|
|
|
|
// because encoded as highpart of uint32
|
|
|
|
#define NET_MAX_BUFFER_ID 32767
|
|
|
|
|
|
|
|
// because encoded as lowpart of uint32
|
|
|
|
#define NET_MAX_BUFFERS_COUNT 32767
|
|
|
|
|
|
|
|
// This is the payload plus any header info (excluding UDP header)
|
|
|
|
|
|
|
|
// Packet header is:
|
|
|
|
// 4 bytes of outgoing seq
|
|
|
|
// 4 bytes of incoming seq
|
|
|
|
// and for each stream
|
|
|
|
// {
|
|
|
|
// byte (on/off)
|
|
|
|
// int (fragment id)
|
2019-01-29 21:44:48 +01:00
|
|
|
// int (startpos)
|
|
|
|
// int (length)
|
2018-04-13 18:23:45 +02:00
|
|
|
// }
|
2019-01-29 21:44:48 +01:00
|
|
|
#define HEADER_BYTES ( 8 + MAX_STREAMS * 13 )
|
2018-04-13 18:23:45 +02:00
|
|
|
|
|
|
|
// Pad this to next higher 16 byte boundary
|
|
|
|
// This is the largest packet that can come in/out over the wire, before processing the header
|
|
|
|
// bytes will be stripped by the networking channel layer
|
|
|
|
#define NET_MAX_MESSAGE PAD_NUMBER(( NET_MAX_PAYLOAD + HEADER_BYTES ), 16 )
|
|
|
|
|
|
|
|
#define MASTERSERVER_ADR "ms.xash.su:27010"
|
2018-06-01 19:44:16 +02:00
|
|
|
#define MASTERSERVER_ADR2 "ms2.xash.su:27010"
|
2018-10-04 08:08:48 +02:00
|
|
|
#define MS_SCAN_REQUEST "1\xFF" "0.0.0.0:0\0"
|
2018-10-04 09:27:14 +02:00
|
|
|
|
2018-04-13 18:23:45 +02:00
|
|
|
#define PORT_MASTER 27010
|
|
|
|
#define PORT_CLIENT 27005
|
|
|
|
#define PORT_SERVER 27015
|
|
|
|
|
|
|
|
#define MULTIPLAYER_BACKUP 64 // how many data slots to use when in multiplayer (must be power of 2)
|
2019-10-26 02:06:26 +02:00
|
|
|
#define SINGLEPLAYER_BACKUP 16 // same for single player
|
2018-04-13 18:23:45 +02:00
|
|
|
#define CMD_BACKUP 64 // allow a lot of command backups for very fast systems
|
|
|
|
#define CMD_MASK (CMD_BACKUP - 1)
|
|
|
|
#define NUM_PACKET_ENTITIES 256 // 170 Mb for multiplayer with 32 players
|
|
|
|
#define MAX_CUSTOM_BASELINES 64
|
2019-01-30 09:14:43 +01:00
|
|
|
#define NET_LEGACY_EXT_SPLIT (1U<<1)
|
2019-01-29 11:28:39 +01:00
|
|
|
#define NETSPLIT_BACKUP 8
|
|
|
|
#define NETSPLIT_BACKUP_MASK (NETSPLIT_BACKUP - 1)
|
|
|
|
#define NETSPLIT_HEADER_SIZE 18
|
|
|
|
|
2019-10-26 02:06:26 +02:00
|
|
|
#if XASH_LOW_MEMORY == 2
|
2019-11-04 16:34:08 +01:00
|
|
|
#undef MULTIPLAYER_BACKUP
|
|
|
|
#undef SINGLEPLAYER_BACKUP
|
|
|
|
#undef NUM_PACKET_ENTITIES
|
|
|
|
#undef MAX_CUSTOM_BASELINES
|
|
|
|
#undef NET_MAX_FRAGMENT
|
2019-11-01 07:49:53 +01:00
|
|
|
#define MULTIPLAYER_BACKUP 4 // breaks protocol in legacy mode, new protocol status unknown
|
|
|
|
#define SINGLEPLAYER_BACKUP 4
|
|
|
|
#define NUM_PACKET_ENTITIES 32
|
2019-10-26 02:06:26 +02:00
|
|
|
#define MAX_CUSTOM_BASELINES 8
|
|
|
|
#define NET_MAX_FRAGMENT 32768
|
2019-11-04 13:58:45 +01:00
|
|
|
#elif XASH_LOW_MEMORY == 1
|
2019-11-04 16:34:08 +01:00
|
|
|
#undef SINGLEPLAYER_BACKUP
|
|
|
|
#undef NUM_PACKET_ENTITIES
|
|
|
|
#undef MAX_CUSTOM_BASELINES
|
|
|
|
#undef NET_MAX_FRAGMENT
|
|
|
|
#define SINGLEPLAYER_BACKUP 4
|
|
|
|
#define NUM_PACKET_ENTITIES 64
|
|
|
|
#define MAX_CUSTOM_BASELINES 8
|
|
|
|
#define NET_MAX_FRAGMENT 32768
|
2019-10-26 02:06:26 +02:00
|
|
|
#endif
|
|
|
|
|
2019-01-29 11:28:39 +01:00
|
|
|
typedef struct netsplit_chain_packet_s
|
|
|
|
{
|
|
|
|
// bool vector
|
2020-04-19 11:56:16 +02:00
|
|
|
uint32_t recieved_v[8];
|
2019-01-29 11:28:39 +01:00
|
|
|
// serial number
|
2020-04-19 11:56:16 +02:00
|
|
|
uint32_t id;
|
2019-01-29 11:28:39 +01:00
|
|
|
byte data[NET_MAX_PAYLOAD];
|
|
|
|
byte received;
|
|
|
|
byte count;
|
|
|
|
} netsplit_chain_packet_t;
|
|
|
|
|
|
|
|
// raw packet format
|
|
|
|
typedef struct netsplit_packet_s
|
|
|
|
{
|
2020-04-19 11:56:16 +02:00
|
|
|
uint32_t signature; // 0xFFFFFFFE
|
|
|
|
uint32_t length;
|
|
|
|
uint32_t part;
|
|
|
|
uint32_t id;
|
2019-01-29 11:28:39 +01:00
|
|
|
// max 256 parts
|
|
|
|
byte count;
|
|
|
|
byte index;
|
|
|
|
byte data[NET_MAX_PAYLOAD - NETSPLIT_HEADER_SIZE];
|
|
|
|
} netsplit_packet_t;
|
|
|
|
|
|
|
|
|
|
|
|
typedef struct netsplit_s
|
|
|
|
{
|
|
|
|
netsplit_chain_packet_t packets[NETSPLIT_BACKUP];
|
2020-04-19 11:56:16 +02:00
|
|
|
uint64_t total_received;
|
|
|
|
uint64_t total_received_uncompressed;
|
2019-01-29 11:28:39 +01:00
|
|
|
} netsplit_t;
|
|
|
|
|
|
|
|
// packet splitting
|
|
|
|
qboolean NetSplit_GetLong( netsplit_t *ns, netadr_t *from, byte *data, size_t *length );
|
|
|
|
|
|
|
|
|
2018-04-13 18:23:45 +02:00
|
|
|
/*
|
|
|
|
==============================================================
|
|
|
|
|
|
|
|
NET
|
|
|
|
|
|
|
|
==============================================================
|
|
|
|
*/
|
|
|
|
#define MAX_FLOWS 2
|
|
|
|
|
|
|
|
#define FLOW_OUTGOING 0
|
|
|
|
#define FLOW_INCOMING 1
|
|
|
|
#define MAX_LATENT 32
|
|
|
|
#define MASK_LATENT ( MAX_LATENT - 1 )
|
|
|
|
|
|
|
|
#define FRAG_NORMAL_STREAM 0
|
|
|
|
#define FRAG_FILE_STREAM 1
|
|
|
|
|
|
|
|
// message data
|
|
|
|
typedef struct
|
|
|
|
{
|
|
|
|
int size; // size of message sent/received
|
|
|
|
double time; // time that message was sent/received
|
|
|
|
} flowstats_t;
|
|
|
|
|
|
|
|
typedef struct
|
|
|
|
{
|
|
|
|
flowstats_t stats[MAX_LATENT]; // data for last MAX_LATENT messages
|
|
|
|
int current; // current message position
|
|
|
|
double nextcompute; // time when we should recompute k/sec data
|
|
|
|
float kbytespersec; // average data
|
|
|
|
float avgkbytespersec;
|
|
|
|
int totalbytes;
|
|
|
|
} flow_t;
|
|
|
|
|
|
|
|
// generic fragment structure
|
|
|
|
typedef struct fragbuf_s
|
|
|
|
{
|
|
|
|
struct fragbuf_s *next; // next buffer in chain
|
|
|
|
int bufferid; // id of this buffer
|
|
|
|
sizebuf_t frag_message; // message buffer where raw data is stored
|
|
|
|
byte frag_message_buf[NET_MAX_FRAGMENT]; // the actual data sits here
|
|
|
|
qboolean isfile; // is this a file buffer?
|
|
|
|
qboolean isbuffer; // is this file buffer from memory ( custom decal, etc. ).
|
|
|
|
qboolean iscompressed; // is compressed file, we should using filename.ztmp
|
|
|
|
char filename[MAX_OSPATH]; // name of the file to save out on remote host
|
2021-01-03 02:28:45 +01:00
|
|
|
int foffset; // offset in file from which to read data
|
2018-04-13 18:23:45 +02:00
|
|
|
int size; // size of data to read at that offset
|
|
|
|
} fragbuf_t;
|
|
|
|
|
|
|
|
// Waiting list of fragbuf chains
|
|
|
|
typedef struct fbufqueue_s
|
|
|
|
{
|
|
|
|
struct fbufqueue_s *next; // next chain in waiting list
|
|
|
|
int fragbufcount; // number of buffers in this chain
|
|
|
|
fragbuf_t *fragbufs; // the actual buffers
|
|
|
|
} fragbufwaiting_t;
|
|
|
|
|
2019-01-29 21:44:48 +01:00
|
|
|
typedef enum fragsize_e
|
|
|
|
{
|
|
|
|
FRAGSIZE_FRAG,
|
|
|
|
FRAGSIZE_SPLIT,
|
|
|
|
FRAGSIZE_UNRELIABLE
|
|
|
|
} fragsize_t;
|
|
|
|
|
2018-04-13 18:23:45 +02:00
|
|
|
// Network Connection Channel
|
|
|
|
typedef struct netchan_s
|
|
|
|
{
|
|
|
|
netsrc_t sock; // NS_SERVER or NS_CLIENT, depending on channel.
|
2021-01-03 02:28:45 +01:00
|
|
|
netadr_t remote_address; // address this channel is talking to.
|
2018-04-13 18:23:45 +02:00
|
|
|
int qport; // qport value to write when transmitting
|
|
|
|
|
|
|
|
double last_received; // for timeouts
|
|
|
|
double connect_time; // Usage: host.realtime - netchan.connect_time
|
|
|
|
double rate; // bandwidth choke. bytes per second
|
|
|
|
double cleartime; // if realtime > cleartime, free to send next packet
|
|
|
|
|
|
|
|
// Sequencing variables
|
2021-01-02 03:01:51 +01:00
|
|
|
unsigned int incoming_sequence; // increasing count of sequence numbers
|
|
|
|
unsigned int incoming_acknowledged; // # of last outgoing message that has been ack'd.
|
|
|
|
unsigned int incoming_reliable_acknowledged; // toggles T/F as reliable messages are received.
|
|
|
|
unsigned int incoming_reliable_sequence; // single bit, maintained local
|
|
|
|
unsigned int outgoing_sequence; // message we are sending to remote
|
|
|
|
unsigned int reliable_sequence; // whether the message contains reliable payload, single bit
|
|
|
|
unsigned int last_reliable_sequence; // outgoing sequence number of last send that had reliable data
|
2018-04-13 18:23:45 +02:00
|
|
|
|
|
|
|
// callback to get actual framgment size
|
|
|
|
void *client;
|
2019-01-29 21:44:48 +01:00
|
|
|
int (*pfnBlockSize)( void *cl, fragsize_t mode );
|
2018-04-13 18:23:45 +02:00
|
|
|
|
|
|
|
// staging and holding areas
|
|
|
|
sizebuf_t message;
|
|
|
|
byte message_buf[NET_MAX_MESSAGE];
|
|
|
|
|
|
|
|
// reliable message buffer.
|
|
|
|
// we keep adding to it until reliable is acknowledged. Then we clear it.
|
|
|
|
int reliable_length;
|
|
|
|
byte reliable_buf[NET_MAX_MESSAGE]; // unacked reliable message (max size for loopback connection)
|
|
|
|
|
|
|
|
// Waiting list of buffered fragments to go onto queue.
|
|
|
|
// Multiple outgoing buffers can be queued in succession
|
2021-01-03 02:28:45 +01:00
|
|
|
fragbufwaiting_t *waitlist[MAX_STREAMS];
|
2018-04-13 18:23:45 +02:00
|
|
|
|
2019-07-19 19:23:08 +02:00
|
|
|
int reliable_fragment[MAX_STREAMS]; // is reliable waiting buf a fragment?
|
2018-04-13 18:23:45 +02:00
|
|
|
uint reliable_fragid[MAX_STREAMS]; // buffer id for each waiting fragment
|
|
|
|
|
|
|
|
fragbuf_t *fragbufs[MAX_STREAMS]; // the current fragment being set
|
|
|
|
int fragbufcount[MAX_STREAMS]; // the total number of fragments in this stream
|
|
|
|
|
|
|
|
int frag_startpos[MAX_STREAMS]; // position in outgoing buffer where frag data starts
|
|
|
|
int frag_length[MAX_STREAMS]; // length of frag data in the buffer
|
|
|
|
|
|
|
|
fragbuf_t *incomingbufs[MAX_STREAMS]; // incoming fragments are stored here
|
|
|
|
qboolean incomingready[MAX_STREAMS]; // set to true when incoming data is ready
|
|
|
|
|
|
|
|
// Only referenced by the FRAG_FILE_STREAM component
|
|
|
|
char incomingfilename[MAX_OSPATH]; // Name of file being downloaded
|
|
|
|
|
|
|
|
void *tempbuffer; // download file buffer
|
|
|
|
int tempbuffersize; // current size
|
|
|
|
|
|
|
|
// incoming and outgoing flow metrics
|
2021-01-03 02:28:45 +01:00
|
|
|
flow_t flow[MAX_FLOWS];
|
2018-04-13 18:23:45 +02:00
|
|
|
|
|
|
|
// added for net_speeds
|
|
|
|
size_t total_sended;
|
|
|
|
size_t total_received;
|
2019-01-29 11:28:39 +01:00
|
|
|
qboolean split;
|
|
|
|
unsigned int maxpacket;
|
|
|
|
unsigned int splitid;
|
|
|
|
netsplit_t netsplit;
|
2018-04-13 18:23:45 +02:00
|
|
|
} netchan_t;
|
|
|
|
|
|
|
|
extern netadr_t net_from;
|
|
|
|
extern netadr_t net_local;
|
|
|
|
extern sizebuf_t net_message;
|
|
|
|
extern byte net_message_buffer[NET_MAX_MESSAGE];
|
|
|
|
extern convar_t sv_lan;
|
|
|
|
extern convar_t sv_lan_rate;
|
|
|
|
extern int net_drop;
|
|
|
|
|
|
|
|
void Netchan_Init( void );
|
|
|
|
void Netchan_Shutdown( void );
|
2019-01-30 08:04:29 +01:00
|
|
|
void Netchan_Setup( netsrc_t sock, netchan_t *chan, netadr_t adr, int qport, void *client, int (*pfnBlockSize)(void *, fragsize_t mode ) );
|
2018-04-23 22:07:54 +02:00
|
|
|
void Netchan_CreateFileFragmentsFromBuffer( netchan_t *chan, const char *filename, byte *pbuf, int size );
|
2018-04-13 18:23:45 +02:00
|
|
|
qboolean Netchan_CopyNormalFragments( netchan_t *chan, sizebuf_t *msg, size_t *length );
|
|
|
|
qboolean Netchan_CopyFileFragments( netchan_t *chan, sizebuf_t *msg );
|
|
|
|
void Netchan_CreateFragments( netchan_t *chan, sizebuf_t *msg );
|
|
|
|
int Netchan_CreateFileFragments( netchan_t *chan, const char *filename );
|
|
|
|
void Netchan_Transmit( netchan_t *chan, int lengthInBytes, byte *data );
|
|
|
|
void Netchan_TransmitBits( netchan_t *chan, int lengthInBits, byte *data );
|
|
|
|
void Netchan_OutOfBand( int net_socket, netadr_t adr, int length, byte *data );
|
2021-07-20 15:02:59 +02:00
|
|
|
void Netchan_OutOfBandPrint( int net_socket, netadr_t adr, const char *format, ... ) _format( 3 );
|
2018-04-13 18:23:45 +02:00
|
|
|
qboolean Netchan_Process( netchan_t *chan, sizebuf_t *msg );
|
|
|
|
void Netchan_UpdateProgress( netchan_t *chan );
|
|
|
|
qboolean Netchan_IncomingReady( netchan_t *chan );
|
|
|
|
qboolean Netchan_CanPacket( netchan_t *chan, qboolean choke );
|
|
|
|
qboolean Netchan_IsLocal( netchan_t *chan );
|
|
|
|
void Netchan_ReportFlow( netchan_t *chan );
|
|
|
|
void Netchan_FragSend( netchan_t *chan );
|
|
|
|
void Netchan_Clear( netchan_t *chan );
|
|
|
|
|
2018-04-23 20:36:33 +02:00
|
|
|
#endif//NET_MSG_H
|