FS2_Open
Open source remastering of the Freespace 2 engine
Classes | Macros | Typedefs | Functions | Variables
psnet2.cpp File Reference
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/select.h>
#include <errno.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <limits.h>
#include <algorithm>
#include "globalincs/pstypes.h"
#include "network/psnet2.h"
#include "network/multi.h"
#include "network/multiutil.h"
#include "network/multilag.h"
#include "osapi/osregistry.h"
#include "io/timer.h"
#include "network/multi_log.h"
#include "network/multi_rate.h"
#include "cmdline/cmdline.h"

Go to the source code of this file.

Classes

struct  network_packet
 
struct  network_packet_buffer
 
struct  network_packet_buffer_list
 
struct  reliable_header
 
struct  reliable_net_sendbuffer
 
struct  reliable_net_rcvbuffer
 
struct  reliable_socket
 

Macros

#define WSAGetLastError()   (errno)
 
#define NETWORK_CONNECTION_NONE   1
 
#define NETWORK_CONNECTION_DIALUP   2
 
#define NETWORK_CONNECTION_LAN   3
 
#define NETWORK_STATUS_NOT_INITIALIZED   1
 
#define NETWORK_STATUS_NO_WINSOCK   2
 
#define NETWORK_STATUS_NO_PROTOCOL   3
 
#define NETWORK_STATUS_NO_RELIABLE   4
 
#define NETWORK_STATUS_RUNNING   5
 
#define MAX_TOP_LAYER_PACKET_SIZE   680
 
#define MAX_PACKET_BUFFERS   75
 
#define MAXHOSTNAME   128
 
#define MAX_RECEIVE_BUFSIZE   4096
 
#define MAX_SEND_RETRIES   20
 
#define MAX_LINGER_TIME   0
 
#define MAXNETBUFFERS   150
 
#define NETRETRYTIME   0.75f
 
#define MIN_NET_RETRYTIME   0.2f
 
#define NETTIMEOUT   30
 
#define NETHEARTBEATTIME   3
 
#define MAXRELIABLESOCKETS   40
 
#define NETBUFFERSIZE   600
 
#define RELIABLE_CONNECT_TIME   7
 
#define RNT_ACK   1
 
#define RNT_DATA   2
 
#define RNT_DATA_COMP   3
 
#define RNT_REQ_CONN   4
 
#define RNT_DISCONNECT   5
 
#define RNT_HEARTBEAT   6
 
#define RNT_I_AM_HERE   7
 
#define RELIABLE_PACKET_HEADER_ONLY_SIZE   (sizeof(reliable_header)-NETBUFFERSIZE)
 
#define MAX_PING_HISTORY   10
 
#define CONNECTSEQ   0x142
 

Typedefs

typedef struct network_packet network_naked_packet
 
typedef struct network_packet_buffer network_packet_buffer
 
typedef struct network_packet_buffer_list network_packet_buffer_list
 

Functions

int psnet_is_valid_numeric_ip (char *ip)
 
void psnet_socket_options (SOCKET sock)
 
int psnet_init_tcp ()
 
float psnet_get_time ()
 
int psnet_get_ip ()
 
int psnet_init_rel_tcp (int port, int should_listen)
 
void psnet_rel_close ()
 
void psnet_buffer_init (network_packet_buffer_list *l)
 
void psnet_buffer_packet (network_packet_buffer_list *l, ubyte *data, int length, net_addr *from)
 
int psnet_buffer_get_next (network_packet_buffer_list *l, ubyte *data, int *length, net_addr *from)
 
int RECVFROM (SOCKET s, char *buf, int len, int flags, sockaddr *from, int *fromlen, int psnet_type)
 
int SELECT (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout, int psnet_type)
 
int SENDTO (SOCKET s, char *buf, int len, int flags, sockaddr *to, int tolen, int psnet_type)
 
void PSNET_TOP_LAYER_PROCESS ()
 
void psnet_init (int protocol, int port_num)
 
void psnet_close ()
 
int psnet_use_protocol (int protocol)
 
int psnet_get_network_status ()
 
char * psnet_addr_to_string (char *text, net_addr *address)
 
void psnet_string_to_addr (net_addr *address, char *text)
 
int psnet_same (net_addr *a1, net_addr *a2)
 
int psnet_send (net_addr *who_to, void *data, int len, int np_index)
 
int psnet_get (void *data, net_addr *from_addr)
 
int psnet_broadcast (net_addr *who_to, void *data, int len)
 
void psnet_flush ()
 
int psnet_is_valid_ip_string (char *ip_string, int allow_port)
 
void psnet_rel_send_ack (SOCKADDR *raddr, unsigned int sig, ubyte link_type, float time_sent)
 
void psnet_rel_close_socket (PSNET_SOCKET_RELIABLE *sockp)
 
int psnet_rel_check ()
 
int psnet_rel_send (PSNET_SOCKET_RELIABLE socketid, ubyte *data, int length, int np_index)
 
int psnet_rel_get (PSNET_SOCKET socketid, ubyte *buffer, int max_len)
 
void psnet_rel_work ()
 
int psnet_rel_get_status (PSNET_SOCKET_RELIABLE socketid)
 
int psnet_rel_check_for_listen (net_addr *from_addr)
 
void psnet_rel_connect_to_server (PSNET_SOCKET *socket, net_addr *server_addr)
 
void psnet_mark_received (PSNET_SOCKET_RELIABLE socket)
 

Variables

int Psnet_my_addr_valid
 
net_addr Psnet_my_addr
 
ubyte Null_address [6]
 
int Socket_type
 
int Can_broadcast
 
int Tcp_can_broadcast = 0
 
int Tcp_active = 0
 
int Network_status
 
int Tcp_failure_code = 0
 
int Ras_connected
 
int Psnet_connection
 
ushort Psnet_default_port
 
int Nettimeout = NETTIMEOUT
 
reliable_socket Reliable_sockets [MAXRELIABLESOCKETS]
 
SOCKET TCP_socket
 
SOCKET Unreliable_socket = INVALID_SOCKET
 
float First_sent_iamhere = 0
 
float Last_sent_iamhere = 0
 
unsigned int Serverconn = 0xffffffff
 
network_packet_buffer_list Psnet_top_buffers [PSNET_NUM_TYPES]
 

Macro Definition Documentation

#define CONNECTSEQ   0x142

Definition at line 213 of file psnet2.cpp.

#define MAX_LINGER_TIME   0

Definition at line 132 of file psnet2.cpp.

#define MAX_PACKET_BUFFERS   75

Definition at line 90 of file psnet2.cpp.

#define MAX_PING_HISTORY   10

Definition at line 169 of file psnet2.cpp.

#define MAX_RECEIVE_BUFSIZE   4096

Definition at line 130 of file psnet2.cpp.

#define MAX_SEND_RETRIES   20

Definition at line 131 of file psnet2.cpp.

#define MAX_TOP_LAYER_PACKET_SIZE   680

Definition at line 86 of file psnet2.cpp.

#define MAXHOSTNAME   128

Definition at line 128 of file psnet2.cpp.

#define MAXNETBUFFERS   150

Definition at line 136 of file psnet2.cpp.

#define MAXRELIABLESOCKETS   40

Definition at line 142 of file psnet2.cpp.

#define MIN_NET_RETRYTIME   0.2f

Definition at line 139 of file psnet2.cpp.

#define NETBUFFERSIZE   600

Definition at line 143 of file psnet2.cpp.

#define NETHEARTBEATTIME   3

Definition at line 141 of file psnet2.cpp.

#define NETRETRYTIME   0.75f

Definition at line 138 of file psnet2.cpp.

#define NETTIMEOUT   30

Definition at line 140 of file psnet2.cpp.

#define NETWORK_CONNECTION_DIALUP   2

Definition at line 71 of file psnet2.cpp.

#define NETWORK_CONNECTION_LAN   3

Definition at line 72 of file psnet2.cpp.

#define NETWORK_CONNECTION_NONE   1

Definition at line 70 of file psnet2.cpp.

#define NETWORK_STATUS_NO_PROTOCOL   3

Definition at line 77 of file psnet2.cpp.

#define NETWORK_STATUS_NO_RELIABLE   4

Definition at line 78 of file psnet2.cpp.

#define NETWORK_STATUS_NO_WINSOCK   2

Definition at line 76 of file psnet2.cpp.

#define NETWORK_STATUS_NOT_INITIALIZED   1

Definition at line 75 of file psnet2.cpp.

#define NETWORK_STATUS_RUNNING   5

Definition at line 79 of file psnet2.cpp.

#define RELIABLE_CONNECT_TIME   7

Definition at line 145 of file psnet2.cpp.

#define RELIABLE_PACKET_HEADER_ONLY_SIZE   (sizeof(reliable_header)-NETBUFFERSIZE)

Definition at line 168 of file psnet2.cpp.

#define RNT_ACK   1

Definition at line 150 of file psnet2.cpp.

#define RNT_DATA   2

Definition at line 151 of file psnet2.cpp.

#define RNT_DATA_COMP   3

Definition at line 152 of file psnet2.cpp.

#define RNT_DISCONNECT   5

Definition at line 154 of file psnet2.cpp.

#define RNT_HEARTBEAT   6

Definition at line 155 of file psnet2.cpp.

#define RNT_I_AM_HERE   7

Definition at line 156 of file psnet2.cpp.

#define RNT_REQ_CONN   4

Definition at line 153 of file psnet2.cpp.

#define WSAGetLastError ( )    (errno)

Definition at line 30 of file psnet2.cpp.

Typedef Documentation

typedef struct network_packet network_naked_packet

Definition for a non-checksum packet

typedef struct network_packet_buffer network_packet_buffer

Structure definition for our packet buffers

typedef struct network_packet_buffer_list network_packet_buffer_list

Structure for a bunch of network packet buffers

Function Documentation

char* psnet_addr_to_string ( char *  text,
net_addr *  address 
)

Convert a net_addr to a string

Definition at line 705 of file psnet2.cpp.

int psnet_broadcast ( net_addr *  who_to,
void *  data,
int  len 
)

Broadcast data on unreliable socket

Definition at line 897 of file psnet2.cpp.

int psnet_buffer_get_next ( network_packet_buffer_list *  l,
ubyte *  data,
int *  length,
net_addr *  from 
)

Get the index of the next packet in order!

Definition at line 1861 of file psnet2.cpp.

void psnet_buffer_init ( network_packet_buffer_list *  l)

Initialize the buffering system

Definition at line 1804 of file psnet2.cpp.

void psnet_buffer_packet ( network_packet_buffer_list *  l,
ubyte *  data,
int  length,
net_addr *  from 
)

Buffer a packet (maintain order!)

Definition at line 1825 of file psnet2.cpp.

void psnet_close ( )

Shutdown psnet

Definition at line 563 of file psnet2.cpp.

void psnet_flush ( )

Flush all sockets

Definition at line 927 of file psnet2.cpp.

int psnet_get ( void *  data,
net_addr *  from_addr 
)

Get data from the unreliable socket

Definition at line 881 of file psnet2.cpp.

int psnet_get_ip ( )

Returns the IP address of this computer

Definition at line 1751 of file psnet2.cpp.

int psnet_get_network_status ( )

Get the status of the network

Definition at line 670 of file psnet2.cpp.

float psnet_get_time ( )

Get time in seconds

Definition at line 2166 of file psnet2.cpp.

void psnet_init ( int  protocol,
int  port_num 
)

Initialize psnet to use the specified port

Definition at line 458 of file psnet2.cpp.

int psnet_init_rel_tcp ( int  port,
int  should_listen 
)

Initialize reliable sockets

Definition at line 1777 of file psnet2.cpp.

int psnet_init_tcp ( )

Initialize tcp socket

Definition at line 2125 of file psnet2.cpp.

int psnet_is_valid_ip_string ( char *  ip_string,
int  allow_port 
)

If the passed string is a valid IP string

Definition at line 938 of file psnet2.cpp.

int psnet_is_valid_numeric_ip ( char *  ip)

If the string is a legally formatted IP string

Definition at line 1904 of file psnet2.cpp.

void psnet_mark_received ( PSNET_SOCKET_RELIABLE  socket)

Mark a socket as having received data

Definition at line 2174 of file psnet2.cpp.

int psnet_rel_check ( )

Definition at line 1067 of file psnet2.cpp.

int psnet_rel_check_for_listen ( net_addr *  from_addr)

Checks the Listen_socket for possibly incoming requests to be connected.

Returns
0 on error or nothing waiting. 1 if we should try to accept

Definition at line 1555 of file psnet2.cpp.

void psnet_rel_close ( )

Definition at line 1783 of file psnet2.cpp.

void psnet_rel_close_socket ( PSNET_SOCKET_RELIABLE *  sockp)

Function to shutdown and close the given socket.

It takes a couple of things into consideration when closing, such as possibly reiniting reliable sockets if they are closed here.

Definition at line 1008 of file psnet2.cpp.

void psnet_rel_connect_to_server ( PSNET_SOCKET *  socket,
net_addr *  server_addr 
)

Attempt to connect() to the server's tcp socket. socket parameter is simply assigned to the Reliable_socket socket created in psnet_init

Definition at line 1593 of file psnet2.cpp.

int psnet_rel_get ( PSNET_SOCKET  socketid,
ubyte *  buffer,
int  max_len 
)

Definition at line 1152 of file psnet2.cpp.

int psnet_rel_get_status ( PSNET_SOCKET_RELIABLE  socketid)

Get the status of a reliable socket, see RNF_* defines above

Definition at line 1542 of file psnet2.cpp.

int psnet_rel_send ( PSNET_SOCKET_RELIABLE  socketid,
ubyte *  data,
int  length,
int  np_index 
)

Send data reliably

Definition at line 1075 of file psnet2.cpp.

void psnet_rel_send_ack ( SOCKADDR *  raddr,
unsigned int  sig,
ubyte  link_type,
float  time_sent 
)

Definition at line 975 of file psnet2.cpp.

void psnet_rel_work ( )

Process all active reliable sockets

Definition at line 1187 of file psnet2.cpp.

int psnet_same ( net_addr *  a1,
net_addr *  a2 
)

Compare 2 addresses

Definition at line 785 of file psnet2.cpp.

int psnet_send ( net_addr *  who_to,
void *  data,
int  len,
int  np_index 
)

Send data unreliably

Definition at line 793 of file psnet2.cpp.

void psnet_socket_options ( SOCKET  sock)

Set some options on a socket

Definition at line 2088 of file psnet2.cpp.

void psnet_string_to_addr ( net_addr *  address,
char *  text 
)

Convert a string to a net addr

Definition at line 732 of file psnet2.cpp.

void PSNET_TOP_LAYER_PROCESS ( )

Call this once per frame to read everything off of our socket

Definition at line 360 of file psnet2.cpp.

int psnet_use_protocol ( int  protocol)

Set the protocol to use

Definition at line 596 of file psnet2.cpp.

int RECVFROM ( SOCKET  s,
char *  buf,
int  len,
int  flags,
sockaddr *  from,
int *  fromlen,
int  psnet_type 
)

Wrappers around select() and recvfrom() for lagging/losing data

Definition at line 271 of file psnet2.cpp.

int SELECT ( int  nfds,
fd_set *  readfds,
fd_set *  writefds,
fd_set *  exceptfds,
struct timeval *  timeout,
int  psnet_type 
)

Wrappers around select() and recvfrom() for lagging/losing data

Definition at line 317 of file psnet2.cpp.

int SENDTO ( SOCKET  s,
char *  buf,
int  len,
int  flags,
sockaddr *  to,
int  tolen,
int  psnet_type 
)

Wrappers around sendto to sorting through different packet types

Definition at line 345 of file psnet2.cpp.

Variable Documentation

int Can_broadcast

Definition at line 57 of file psnet2.cpp.

float First_sent_iamhere = 0

Definition at line 210 of file psnet2.cpp.

float Last_sent_iamhere = 0

Definition at line 211 of file psnet2.cpp.

int Nettimeout = NETTIMEOUT

Definition at line 147 of file psnet2.cpp.

int Network_status

Definition at line 62 of file psnet2.cpp.

ubyte Null_address[6]

Definition at line 54 of file psnet2.cpp.

int Psnet_connection

Definition at line 65 of file psnet2.cpp.

ushort Psnet_default_port

Definition at line 67 of file psnet2.cpp.

net_addr Psnet_my_addr

Definition at line 52 of file psnet2.cpp.

int Psnet_my_addr_valid

Definition at line 51 of file psnet2.cpp.

network_packet_buffer_list Psnet_top_buffers[PSNET_NUM_TYPES]

Definition at line 221 of file psnet2.cpp.

int Ras_connected

Definition at line 64 of file psnet2.cpp.

reliable_socket Reliable_sockets[MAXRELIABLESOCKETS]

Definition at line 202 of file psnet2.cpp.

unsigned int Serverconn = 0xffffffff

Definition at line 215 of file psnet2.cpp.

int Socket_type

Definition at line 56 of file psnet2.cpp.

int Tcp_active = 0

Definition at line 60 of file psnet2.cpp.

int Tcp_can_broadcast = 0

Definition at line 58 of file psnet2.cpp.

int Tcp_failure_code = 0

Definition at line 63 of file psnet2.cpp.

SOCKET TCP_socket

Definition at line 205 of file psnet2.cpp.

SOCKET Unreliable_socket = INVALID_SOCKET

Definition at line 208 of file psnet2.cpp.