gaming/RetroArch
gaming/RetroArch
1
0
Fork 0
mirror of https://github.com/libretro/RetroArch synced 2024-07-08 12:15:49 +00:00
Code Issues Projects Releases Wiki Activity

Merge netplay_init.c into netplay_io.c

Browse Source
This commit is contained in:
twinaphex 2021-04-08 18:16:24 +02:00
parent 2a2f77f0dc
commit 0d549fd42b
5 changed files with 575 additions and 605 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Makefile.common
View File

@ -2080,7 +2080,6 @@ ifeq ($(HAVE_NETWORKING), 1)
# Netplay
DEFINES += -DHAVE_NETWORK_CMD
OBJ += network/netplay/netplay_handshake.o \
network/netplay/netplay_init.o \
network/netplay/netplay_io.o \
network/netplay/netplay_discovery.o \
network/netplay/netplay_room_parse.o

1
griffin/griffin.c
View File

@ -1293,7 +1293,6 @@ NETPLAY
============================================================ */
#ifdef HAVE_NETWORKING
#include "../network/netplay/netplay_handshake.c"
#include "../network/netplay/netplay_init.c"
#include "../network/netplay/netplay_io.c"
#include "../network/netplay/netplay_discovery.c"
#include "../network/netplay/netplay_room_parse.c"

585
network/netplay/netplay_init.c
View File

@ -1,585 +0,0 @@
/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
* Copyright (C) 2016-2017 - Gregor Richards
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#if defined(_MSC_VER) && !defined(_XBOX)
#pragma comment(lib, "ws2_32")
#endif
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <boolean.h>
#include <compat/strl.h>
#include "netplay_private.h"
#include "netplay_discovery.h"
#include "../../autosave.h"
#include "../../retroarch.h"
#if defined(AF_INET6) && !defined(HAVE_SOCKET_LEGACY) && !defined(_3DS)
#define HAVE_INET6 1
#endif
static int init_tcp_connection(const struct addrinfo *res,
bool server,
struct sockaddr *other_addr, socklen_t addr_size)
{
bool ret = true;
int fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (fd < 0)
{
ret = false;
goto end;
}
#if defined(IPPROTO_TCP) && defined(TCP_NODELAY)
{
int flag = 1;
if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY,
#ifdef _WIN32
(const char*)
#else
(const void*)
#endif
&flag,
sizeof(int)) < 0)
RARCH_WARN("Could not set netplay TCP socket to nodelay. Expect jitter.\n");
}
#endif
#if defined(F_SETFD) && defined(FD_CLOEXEC)
/* Don't let any inherited processes keep open our port */
if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
RARCH_WARN("Cannot set Netplay port to close-on-exec. It may fail to reopen if the client disconnects.\n");
#endif
if (server)
{
if (socket_connect(fd, (void*)res, false) < 0)
{
ret = false;
goto end;
}
}
else
{
#if defined(HAVE_INET6) && defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY)
/* Make sure we accept connections on both IPv6 and IPv4 */
int on = 0;
if (res->ai_family == AF_INET6)
{
if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (const char*)&on, sizeof(on)) < 0)
RARCH_WARN("Failed to listen on both IPv6 and IPv4\n");
}
#endif
if ( !socket_bind(fd, (void*)res) ||
listen(fd, 1024) < 0)
{
ret = false;
goto end;
}
}
end:
if (!ret && fd >= 0)
{
socket_close(fd);
fd = -1;
}
return fd;
}
static bool init_tcp_socket(netplay_t *netplay, void *direct_host,
const char *server, uint16_t port)
{
char port_buf[16];
bool ret = false;
const struct addrinfo *tmp_info = NULL;
struct addrinfo *res = NULL;
struct addrinfo hints = {0};
port_buf[0] = '\0';
if (!direct_host)
{
#ifdef HAVE_INET6
/* Default to hosting on IPv6 and IPv4 */
if (!server)
hints.ai_family = AF_INET6;
#endif
hints.ai_socktype = SOCK_STREAM;
if (!server)
hints.ai_flags = AI_PASSIVE;
snprintf(port_buf, sizeof(port_buf), "%hu", (unsigned short)port);
if (getaddrinfo_retro(server, port_buf, &hints, &res) != 0)
{
#ifdef HAVE_INET6
try_wildcard:
if (!server)
{
/* Didn't work with IPv6, try wildcard */
hints.ai_family = 0;
if (getaddrinfo_retro(server, port_buf, &hints, &res) != 0)
return false;
}
else
#endif
return false;
}
if (!res)
return false;
}
else
{
/* I'll build my own addrinfo! */
struct netplay_host *host = (struct netplay_host *)direct_host;
hints.ai_family = host->addr.sa_family;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
hints.ai_addrlen = host->addrlen;
hints.ai_addr = &host->addr;
res = &hints;
}
/* If we're serving on IPv6, make sure we accept all connections, including
* IPv4 */
#ifdef HAVE_INET6
if (!direct_host && !server && res->ai_family == AF_INET6)
{
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) res->ai_addr;
#if defined(_MSC_VER) && _MSC_VER <= 1200
IN6ADDR_SETANY(sin6);
#else
sin6->sin6_addr = in6addr_any;
#endif
}
#endif
/* If "localhost" is used, it is important to check every possible
* address for IPv4/IPv6. */
tmp_info = res;
while (tmp_info)
{
struct sockaddr_storage sad = {0};
int fd = init_tcp_connection(
tmp_info,
direct_host || server,
(struct sockaddr*)&sad,
sizeof(sad));
if (fd >= 0)
{
ret = true;
if (direct_host || server)
{
netplay->connections[0].active = true;
netplay->connections[0].fd = fd;
netplay->connections[0].addr = sad;
}
else
{
netplay->listen_fd = fd;
}
break;
}
tmp_info = tmp_info->ai_next;
}
if (res && !direct_host)
freeaddrinfo_retro(res);
if (!ret)
{
#ifdef HAVE_INET6
if (!direct_host && (hints.ai_family == AF_INET6))
goto try_wildcard;
#endif
RARCH_ERR("Failed to set up netplay sockets.\n");
}
return ret;
}
static bool init_socket(netplay_t *netplay, void *direct_host,
const char *server, uint16_t port)
{
if (!network_init())
return false;
if (!init_tcp_socket(netplay, direct_host, server, port))
return false;
if (netplay->is_server && netplay->nat_traversal)
netplay_init_nat_traversal(netplay);
return true;
}
static bool netplay_init_socket_buffers(netplay_t *netplay)
{
/* Make our packet buffer big enough for a save state and stall-frames-many
* frames of input data, plus the headers for each of them */
size_t i;
size_t packet_buffer_size = netplay->zbuffer_size +
NETPLAY_MAX_STALL_FRAMES * 16;
netplay->packet_buffer_size = packet_buffer_size;
for (i = 0; i < netplay->connections_size; i++)
{
struct netplay_connection *connection = &netplay->connections[i];
if (connection->active)
{
if (connection->send_packet_buffer.data)
{
if (!netplay_resize_socket_buffer(&connection->send_packet_buffer,
packet_buffer_size) ||
!netplay_resize_socket_buffer(&connection->recv_packet_buffer,
packet_buffer_size))
return false;
}
else
{
if (!netplay_init_socket_buffer(&connection->send_packet_buffer,
packet_buffer_size) ||
!netplay_init_socket_buffer(&connection->recv_packet_buffer,
packet_buffer_size))
return false;
}
}
}
return true;
}
static bool netplay_init_serialization(netplay_t *netplay)
{
unsigned i;
retro_ctx_size_info_t info;
if (netplay->state_size)
return true;
core_serialize_size(&info);
if (!info.size)
return false;
netplay->state_size = info.size;
for (i = 0; i < netplay->buffer_size; i++)
{
netplay->buffer[i].state = calloc(netplay->state_size, 1);
if (!netplay->buffer[i].state)
{
netplay->quirks |= NETPLAY_QUIRK_NO_SAVESTATES;
return false;
}
}
netplay->zbuffer_size = netplay->state_size * 2;
netplay->zbuffer = (uint8_t *) calloc(netplay->zbuffer_size, 1);
if (!netplay->zbuffer)
{
netplay->quirks |= NETPLAY_QUIRK_NO_TRANSMISSION;
netplay->zbuffer_size = 0;
return false;
}
return true;
}
/**
* netplay_try_init_serialization
*
* Try to initialize serialization. For quirky cores.
*
* Returns true if serialization is now ready, false otherwise.
*/
bool netplay_try_init_serialization(netplay_t *netplay)
{
retro_ctx_serialize_info_t serial_info;
if (netplay->state_size)
return true;
if (!netplay_init_serialization(netplay))
return false;
/* Check if we can actually save */
serial_info.data_const = NULL;
serial_info.data = netplay->buffer[netplay->run_ptr].state;
serial_info.size = netplay->state_size;
if (!core_serialize(&serial_info))
return false;
/* Once initialized, we no longer exhibit this quirk */
netplay->quirks &= ~((uint64_t) NETPLAY_QUIRK_INITIALIZATION);
return netplay_init_socket_buffers(netplay);
}
/**
* netplay_wait_and_init_serialization
*
* Try very hard to initialize serialization, simulating multiple frames if
* necessary. For quirky cores.
*
* Returns true if serialization is now ready, false otherwise.
*/
bool netplay_wait_and_init_serialization(netplay_t *netplay)
{
int frame;
if (netplay->state_size)
return true;
/* Wait a maximum of 60 frames */
for (frame = 0; frame < 60; frame++)
{
if (netplay_try_init_serialization(netplay))
return true;
#if defined(HAVE_THREADS)
autosave_lock();
#endif
core_run();
#if defined(HAVE_THREADS)
autosave_unlock();
#endif
}
return false;
}
static bool netplay_init_buffers(netplay_t *netplay)
{
struct delta_frame *delta_frames = NULL;
/* Enough to get ahead or behind by MAX_STALL_FRAMES frames, plus one for
* other remote clients, plus one to send the stall message */
netplay->buffer_size = NETPLAY_MAX_STALL_FRAMES + 2;
/* If we're the server, we need enough to get ahead AND behind by
* MAX_STALL_FRAMES frame */
if (netplay->is_server)
netplay->buffer_size *= 2;
delta_frames = (struct delta_frame*)calloc(netplay->buffer_size,
sizeof(*delta_frames));
if (!delta_frames)
return false;
netplay->buffer = delta_frames;
if (!(netplay->quirks & (NETPLAY_QUIRK_NO_SAVESTATES|NETPLAY_QUIRK_INITIALIZATION)))
netplay_init_serialization(netplay);
return netplay_init_socket_buffers(netplay);
}
/**
* netplay_new:
* @direct_host : Netplay host discovered from scanning.
* @server : IP address of server.
* @port : Port of server.
* @stateless_mode : Shall we use stateless mode?
* @check_frames : Frequency with which to check CRCs.
* @cb : Libretro callbacks.
* @nat_traversal : If true, attempt NAT traversal.
* @nick : Nickname of user.
* @quirks : Netplay quirks required for this session.
*
* Creates a new netplay handle. A NULL server means we're
* hosting.
*
* Returns: new netplay data.
*/
netplay_t *netplay_new(void *direct_host, const char *server, uint16_t port,
bool stateless_mode, int check_frames,
const struct retro_callbacks *cb, bool nat_traversal, const char *nick,
uint64_t quirks)
{
netplay_t *netplay = (netplay_t*)calloc(1, sizeof(*netplay));
if (!netplay)
return NULL;
netplay->listen_fd = -1;
netplay->tcp_port = port;
netplay->cbs = *cb;
netplay->is_server = (direct_host == NULL && server == NULL);
netplay->is_connected = false;
netplay->nat_traversal = netplay->is_server ? nat_traversal : false;
netplay->stateless_mode = stateless_mode;
netplay->check_frames = check_frames;
netplay->crc_validity_checked = false;
netplay->crcs_valid = true;
netplay->quirks = quirks;
netplay->self_mode = netplay->is_server ?
NETPLAY_CONNECTION_SPECTATING :
NETPLAY_CONNECTION_NONE;
if (netplay->is_server)
{
netplay->connections = NULL;
netplay->connections_size = 0;
}
else
{
netplay->connections = &netplay->one_connection;
netplay->connections_size = 1;
netplay->connections[0].fd = -1;
}
strlcpy(netplay->nick, nick[0]
? nick : RARCH_DEFAULT_NICK,
sizeof(netplay->nick));
if (!init_socket(netplay, direct_host, server, port))
{
free(netplay);
return NULL;
}
if (!netplay_init_buffers(netplay))
{
free(netplay);
return NULL;
}
if (netplay->is_server)
{
/* Clients get device info from the server */
unsigned i;
for (i = 0; i < MAX_INPUT_DEVICES; i++)
{
uint32_t dtype = input_config_get_device(i);
netplay->config_devices[i] = dtype;
if ((dtype&RETRO_DEVICE_MASK) == RETRO_DEVICE_KEYBOARD)
{
netplay->have_updown_device = true;
netplay_key_hton_init();
}
if (dtype != RETRO_DEVICE_NONE && !netplay_expected_input_size(netplay, 1<<i))
RARCH_WARN("Netplay does not support input device %u\n", i+1);
}
}
else
{
/* Start our handshake */
netplay_handshake_init_send(netplay, &netplay->connections[0]);
netplay->connections[0].mode = NETPLAY_CONNECTION_INIT;
netplay->self_mode = NETPLAY_CONNECTION_INIT;
}
/* FIXME: Not really the right place to do this,
* socket initialization needs to be fixed in general. */
if (netplay->is_server)
{
if (!socket_nonblock(netplay->listen_fd))
goto error;
}
else
{
if (!socket_nonblock(netplay->connections[0].fd))
goto error;
}
return netplay;
error:
if (netplay->listen_fd >= 0)
socket_close(netplay->listen_fd);
if (netplay->connections && netplay->connections[0].fd >= 0)
socket_close(netplay->connections[0].fd);
free(netplay);
return NULL;
}
/**
* netplay_free
* @netplay : pointer to netplay object
*
* Frees netplay data/
*/
void netplay_free(netplay_t *netplay)
{
size_t i;
if (netplay->listen_fd >= 0)
socket_close(netplay->listen_fd);
for (i = 0; i < netplay->connections_size; i++)
{
struct netplay_connection *connection = &netplay->connections[i];
if (connection->active)
{
socket_close(connection->fd);
netplay_deinit_socket_buffer(&connection->send_packet_buffer);
netplay_deinit_socket_buffer(&connection->recv_packet_buffer);
}
}
if (netplay->connections && netplay->connections != &netplay->one_connection)
free(netplay->connections);
if (netplay->nat_traversal)
natt_free(&netplay->nat_traversal_state);
if (netplay->buffer)
{
for (i = 0; i < netplay->buffer_size; i++)
netplay_delta_frame_free(&netplay->buffer[i]);
free(netplay->buffer);
}
if (netplay->zbuffer)
free(netplay->zbuffer);
if (netplay->compress_nil.compression_stream)
{
netplay->compress_nil.compression_backend->stream_free(netplay->compress_nil.compression_stream);
netplay->compress_nil.decompression_backend->stream_free(netplay->compress_nil.decompression_stream);
}
if (netplay->compress_zlib.compression_stream)
{
netplay->compress_zlib.compression_backend->stream_free(netplay->compress_zlib.compression_stream);
netplay->compress_zlib.decompression_backend->stream_free(netplay->compress_zlib.decompression_stream);
}
if (netplay->addr)
freeaddrinfo_retro(netplay->addr);
free(netplay);
}

586
network/netplay/netplay_io.c
View File

@ -15,6 +15,10 @@
* If not, see <http://www.gnu.org/licenses/>.
*/
#if defined(_MSC_VER) && !defined(_XBOX)
#pragma comment(lib, "ws2_32")
#endif
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
@ -27,6 +31,7 @@
#include <net/net_socket.h>
#include "netplay_private.h"
#include "netplay_discovery.h"
#include "../../autosave.h"
#include "../../configuration.h"
@ -37,6 +42,10 @@
#include "../../input/input_driver.h"
#if defined(AF_INET6) && !defined(HAVE_SOCKET_LEGACY) && !defined(_3DS)
#define HAVE_INET6 1
#endif
#ifdef HAVE_DISCORD
#include "../discord.h"
@ -139,11 +148,9 @@ bool netplay_delta_frame_ready(netplay_t *netplay, struct delta_frame *delta,
*
* Get the CRC for the serialization of this frame.
*/
uint32_t netplay_delta_frame_crc(netplay_t *netplay,
static uint32_t netplay_delta_frame_crc(netplay_t *netplay,
struct delta_frame *delta)
{
if (!netplay->state_size)
return 0;
return encoding_crc32(0L, (const unsigned char*)delta->state,
netplay->state_size);
}
@ -204,7 +211,7 @@ netplay_input_state_t netplay_input_state_for(
if (!ret->used && !must_not_create && ret->size == size)
{
ret->client_num = client_num;
ret->used = true;
ret->used = true;
memset(ret->data, 0, size*sizeof(uint32_t));
return ret;
}
@ -378,10 +385,12 @@ void netplay_deinit_socket_buffer(struct socket_buffer *sbuf)
free(sbuf->data);
}
void netplay_clear_socket_buffer(struct socket_buffer *sbuf)
#if 0
static void netplay_clear_socket_buffer(struct socket_buffer *sbuf)
{
sbuf->start = sbuf->read = sbuf->end = 0;
}
#endif
/**
* netplay_send
@ -1117,14 +1126,20 @@ static void netplay_handle_frame_hash(netplay_t *netplay,
if (netplay->check_frames &&
delta->frame % abs(netplay->check_frames) == 0)
{
delta->crc = netplay_delta_frame_crc(netplay, delta);
if (netplay->state_size)
delta->crc = netplay_delta_frame_crc(netplay, delta);
else
delta->crc = 0;
netplay_cmd_crc(netplay, delta);
}
}
else if (delta->crc && netplay->crcs_valid)
{
/* We have a remote CRC, so check it */
uint32_t local_crc = netplay_delta_frame_crc(netplay, delta);
uint32_t local_crc = 0;
if (netplay->state_size)
local_crc = netplay_delta_frame_crc(netplay, delta);
if (local_crc != delta->crc)
{
/* If the very first check frame is wrong,
@ -1508,7 +1523,7 @@ void netplay_sync_post_frame(netplay_t *netplay, bool stalled)
#ifdef DEBUG_NONDETERMINISTIC_CORES
if (ptr->have_remote && netplay_delta_frame_ready(netplay, &netplay->buffer[netplay->replay_ptr], netplay->replay_frame_count))
{
RARCH_LOG("PRE %u: %X\n", netplay->replay_frame_count-1, netplay_delta_frame_crc(netplay, ptr));
RARCH_LOG("PRE %u: %X\n", netplay->replay_frame_count-1, netplay->state_size ? netplay_delta_frame_crc(netplay, ptr) : 0);
if (netplay->is_server)
RARCH_LOG("INP %X %X\n", ptr->real_input_state[0], ptr->self_state[0]);
else
@ -1517,7 +1532,7 @@ void netplay_sync_post_frame(netplay_t *netplay, bool stalled)
serial_info.data = ptr->state;
memset(serial_info.data, 0, serial_info.size);
core_serialize(&serial_info);
RARCH_LOG("POST %u: %X\n", netplay->replay_frame_count-1, netplay_delta_frame_crc(netplay, ptr));
RARCH_LOG("POST %u: %X\n", netplay->replay_frame_count-1, netplay->state_size ? netplay_delta_frame_crc(netplay, ptr) : 0);
}
#endif
@ -3158,8 +3173,10 @@ static bool netplay_get_cmd(netplay_t *netplay,
{
/* We've already replayed up to this frame, so we can check it
* directly */
uint32_t local_crc = netplay_delta_frame_crc(
netplay, &netplay->buffer[tmp_ptr]);
uint32_t local_crc = 0;
if (netplay->state_size)
local_crc = netplay_delta_frame_crc(
netplay, &netplay->buffer[tmp_ptr]);
/* Problem! */
if (buffer[1] != local_crc)
@ -3670,3 +3687,550 @@ void netplay_init_nat_traversal(netplay_t *netplay)
netplay->nat_traversal_task_oustanding = true;
task_push_netplay_nat_traversal(&netplay->nat_traversal_state, netplay->tcp_port);
}
static int init_tcp_connection(const struct addrinfo *res,
bool server,
struct sockaddr *other_addr, socklen_t addr_size)
{
bool ret = true;
int fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (fd < 0)
{
ret = false;
goto end;
}
#if defined(IPPROTO_TCP) && defined(TCP_NODELAY)
{
int flag = 1;
if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY,
#ifdef _WIN32
(const char*)
#else
(const void*)
#endif
&flag,
sizeof(int)) < 0)
RARCH_WARN("Could not set netplay TCP socket to nodelay. Expect jitter.\n");
}
#endif
#if defined(F_SETFD) && defined(FD_CLOEXEC)
/* Don't let any inherited processes keep open our port */
if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
RARCH_WARN("Cannot set Netplay port to close-on-exec. It may fail to reopen if the client disconnects.\n");
#endif
if (server)
{
if (socket_connect(fd, (void*)res, false) < 0)
{
ret = false;
goto end;
}
}
else
{
#if defined(HAVE_INET6) && defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY)
/* Make sure we accept connections on both IPv6 and IPv4 */
int on = 0;
if (res->ai_family == AF_INET6)
{
if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (const char*)&on, sizeof(on)) < 0)
RARCH_WARN("Failed to listen on both IPv6 and IPv4\n");
}
#endif
if ( !socket_bind(fd, (void*)res) ||
listen(fd, 1024) < 0)
{
ret = false;
goto end;
}
}
end:
if (!ret && fd >= 0)
{
socket_close(fd);
fd = -1;
}
return fd;
}
static bool init_tcp_socket(netplay_t *netplay, void *direct_host,
const char *server, uint16_t port)
{
char port_buf[16];
bool ret = false;
const struct addrinfo *tmp_info = NULL;
struct addrinfo *res = NULL;
struct addrinfo hints = {0};
port_buf[0] = '\0';
if (!direct_host)
{
#ifdef HAVE_INET6
/* Default to hosting on IPv6 and IPv4 */
if (!server)
hints.ai_family = AF_INET6;
#endif
hints.ai_socktype = SOCK_STREAM;
if (!server)
hints.ai_flags = AI_PASSIVE;
snprintf(port_buf, sizeof(port_buf), "%hu", (unsigned short)port);
if (getaddrinfo_retro(server, port_buf, &hints, &res) != 0)
{
#ifdef HAVE_INET6
try_wildcard:
if (!server)
{
/* Didn't work with IPv6, try wildcard */
hints.ai_family = 0;
if (getaddrinfo_retro(server, port_buf, &hints, &res) != 0)
return false;
}
else
#endif
return false;
}
if (!res)
return false;
}
else
{
/* I'll build my own addrinfo! */
struct netplay_host *host = (struct netplay_host *)direct_host;
hints.ai_family = host->addr.sa_family;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
hints.ai_addrlen = host->addrlen;
hints.ai_addr = &host->addr;
res = &hints;
}
/* If we're serving on IPv6, make sure we accept all connections, including
* IPv4 */
#ifdef HAVE_INET6
if (!direct_host && !server && res->ai_family == AF_INET6)
{
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) res->ai_addr;
#if defined(_MSC_VER) && _MSC_VER <= 1200
IN6ADDR_SETANY(sin6);
#else
sin6->sin6_addr = in6addr_any;
#endif
}
#endif
/* If "localhost" is used, it is important to check every possible
* address for IPv4/IPv6. */
tmp_info = res;
while (tmp_info)
{
struct sockaddr_storage sad = {0};
int fd = init_tcp_connection(
tmp_info,
direct_host || server,
(struct sockaddr*)&sad,
sizeof(sad));
if (fd >= 0)
{
ret = true;
if (direct_host || server)
{
netplay->connections[0].active = true;
netplay->connections[0].fd = fd;
netplay->connections[0].addr = sad;
}
else
{
netplay->listen_fd = fd;
}
break;
}
tmp_info = tmp_info->ai_next;
}
if (res && !direct_host)
freeaddrinfo_retro(res);
if (!ret)
{
#ifdef HAVE_INET6
if (!direct_host && (hints.ai_family == AF_INET6))
goto try_wildcard;
#endif
RARCH_ERR("Failed to set up netplay sockets.\n");
}
return ret;
}
static bool init_socket(netplay_t *netplay, void *direct_host,
const char *server, uint16_t port)
{
if (!network_init())
return false;
if (!init_tcp_socket(netplay, direct_host, server, port))
return false;
if (netplay->is_server && netplay->nat_traversal)
netplay_init_nat_traversal(netplay);
return true;
}
static bool netplay_init_socket_buffers(netplay_t *netplay)
{
/* Make our packet buffer big enough for a save state and stall-frames-many
* frames of input data, plus the headers for each of them */
size_t i;
size_t packet_buffer_size = netplay->zbuffer_size +
NETPLAY_MAX_STALL_FRAMES * 16;
netplay->packet_buffer_size = packet_buffer_size;
for (i = 0; i < netplay->connections_size; i++)
{
struct netplay_connection *connection = &netplay->connections[i];
if (connection->active)
{
if (connection->send_packet_buffer.data)
{
if (!netplay_resize_socket_buffer(&connection->send_packet_buffer,
packet_buffer_size) ||
!netplay_resize_socket_buffer(&connection->recv_packet_buffer,
packet_buffer_size))
return false;
}
else
{
if (!netplay_init_socket_buffer(&connection->send_packet_buffer,
packet_buffer_size) ||
!netplay_init_socket_buffer(&connection->recv_packet_buffer,
packet_buffer_size))
return false;
}
}
}
return true;
}
static bool netplay_init_serialization(netplay_t *netplay)
{
unsigned i;
retro_ctx_size_info_t info;
if (netplay->state_size)
return true;
core_serialize_size(&info);
if (!info.size)
return false;
netplay->state_size = info.size;
for (i = 0; i < netplay->buffer_size; i++)
{
netplay->buffer[i].state = calloc(netplay->state_size, 1);
if (!netplay->buffer[i].state)
{
netplay->quirks |= NETPLAY_QUIRK_NO_SAVESTATES;
return false;
}
}
netplay->zbuffer_size = netplay->state_size * 2;
netplay->zbuffer = (uint8_t *) calloc(netplay->zbuffer_size, 1);
if (!netplay->zbuffer)
{
netplay->quirks |= NETPLAY_QUIRK_NO_TRANSMISSION;
netplay->zbuffer_size = 0;
return false;
}
return true;
}
/**
* netplay_try_init_serialization
*
* Try to initialize serialization. For quirky cores.
*
* Returns true if serialization is now ready, false otherwise.
*/
bool netplay_try_init_serialization(netplay_t *netplay)
{
retro_ctx_serialize_info_t serial_info;
if (netplay->state_size)
return true;
if (!netplay_init_serialization(netplay))
return false;
/* Check if we can actually save */
serial_info.data_const = NULL;
serial_info.data = netplay->buffer[netplay->run_ptr].state;
serial_info.size = netplay->state_size;
if (!core_serialize(&serial_info))
return false;
/* Once initialized, we no longer exhibit this quirk */
netplay->quirks &= ~((uint64_t) NETPLAY_QUIRK_INITIALIZATION);
return netplay_init_socket_buffers(netplay);
}
/**
* netplay_wait_and_init_serialization
*
* Try very hard to initialize serialization, simulating multiple frames if
* necessary. For quirky cores.
*
* Returns true if serialization is now ready, false otherwise.
*/
bool netplay_wait_and_init_serialization(netplay_t *netplay)
{
int frame;
if (netplay->state_size)
return true;
/* Wait a maximum of 60 frames */
for (frame = 0; frame < 60; frame++)
{
if (netplay_try_init_serialization(netplay))
return true;
#if defined(HAVE_THREADS)
autosave_lock();
#endif
core_run();
#if defined(HAVE_THREADS)
autosave_unlock();
#endif
}
return false;
}
static bool netplay_init_buffers(netplay_t *netplay)
{
struct delta_frame *delta_frames = NULL;
/* Enough to get ahead or behind by MAX_STALL_FRAMES frames, plus one for
* other remote clients, plus one to send the stall message */
netplay->buffer_size = NETPLAY_MAX_STALL_FRAMES + 2;
/* If we're the server, we need enough to get ahead AND behind by
* MAX_STALL_FRAMES frame */
if (netplay->is_server)
netplay->buffer_size *= 2;
delta_frames = (struct delta_frame*)calloc(netplay->buffer_size,
sizeof(*delta_frames));
if (!delta_frames)
return false;
netplay->buffer = delta_frames;
if (!(netplay->quirks & (NETPLAY_QUIRK_NO_SAVESTATES|NETPLAY_QUIRK_INITIALIZATION)))
netplay_init_serialization(netplay);
return netplay_init_socket_buffers(netplay);
}
/**
* netplay_new:
* @direct_host : Netplay host discovered from scanning.
* @server : IP address of server.
* @port : Port of server.
* @stateless_mode : Shall we use stateless mode?
* @check_frames : Frequency with which to check CRCs.
* @cb : Libretro callbacks.
* @nat_traversal : If true, attempt NAT traversal.
* @nick : Nickname of user.
* @quirks : Netplay quirks required for this session.
*
* Creates a new netplay handle. A NULL server means we're
* hosting.
*
* Returns: new netplay data.
*/
netplay_t *netplay_new(void *direct_host, const char *server, uint16_t port,
bool stateless_mode, int check_frames,
const struct retro_callbacks *cb, bool nat_traversal, const char *nick,
uint64_t quirks)
{
netplay_t *netplay = (netplay_t*)calloc(1, sizeof(*netplay));
if (!netplay)
return NULL;
netplay->listen_fd = -1;
netplay->tcp_port = port;
netplay->cbs = *cb;
netplay->is_server = (direct_host == NULL && server == NULL);
netplay->is_connected = false;
netplay->nat_traversal = netplay->is_server ? nat_traversal : false;
netplay->stateless_mode = stateless_mode;
netplay->check_frames = check_frames;
netplay->crc_validity_checked = false;
netplay->crcs_valid = true;
netplay->quirks = quirks;
netplay->self_mode = netplay->is_server ?
NETPLAY_CONNECTION_SPECTATING :
NETPLAY_CONNECTION_NONE;
if (netplay->is_server)
{
netplay->connections = NULL;
netplay->connections_size = 0;
}
else
{
netplay->connections = &netplay->one_connection;
netplay->connections_size = 1;
netplay->connections[0].fd = -1;
}
strlcpy(netplay->nick, nick[0]
? nick : RARCH_DEFAULT_NICK,
sizeof(netplay->nick));
if (!init_socket(netplay, direct_host, server, port))
{
free(netplay);
return NULL;
}
if (!netplay_init_buffers(netplay))
{
free(netplay);
return NULL;
}
if (netplay->is_server)
{
/* Clients get device info from the server */
unsigned i;
for (i = 0; i < MAX_INPUT_DEVICES; i++)
{
uint32_t dtype = input_config_get_device(i);
netplay->config_devices[i] = dtype;
if ((dtype&RETRO_DEVICE_MASK) == RETRO_DEVICE_KEYBOARD)
{
netplay->have_updown_device = true;
netplay_key_hton_init();
}
if (dtype != RETRO_DEVICE_NONE && !netplay_expected_input_size(netplay, 1<<i))
RARCH_WARN("Netplay does not support input device %u\n", i+1);
}
}
else
{
/* Start our handshake */
netplay_handshake_init_send(netplay, &netplay->connections[0]);
netplay->connections[0].mode = NETPLAY_CONNECTION_INIT;
netplay->self_mode = NETPLAY_CONNECTION_INIT;
}
/* FIXME: Not really the right place to do this,
* socket initialization needs to be fixed in general. */
if (netplay->is_server)
{
if (!socket_nonblock(netplay->listen_fd))
goto error;
}
else
{
if (!socket_nonblock(netplay->connections[0].fd))
goto error;
}
return netplay;
error:
if (netplay->listen_fd >= 0)
socket_close(netplay->listen_fd);
if (netplay->connections && netplay->connections[0].fd >= 0)
socket_close(netplay->connections[0].fd);
free(netplay);
return NULL;
}
/**
* netplay_free
* @netplay : pointer to netplay object
*
* Frees netplay data/
*/
void netplay_free(netplay_t *netplay)
{
size_t i;
if (netplay->listen_fd >= 0)
socket_close(netplay->listen_fd);
for (i = 0; i < netplay->connections_size; i++)
{
struct netplay_connection *connection = &netplay->connections[i];
if (connection->active)
{
socket_close(connection->fd);
netplay_deinit_socket_buffer(&connection->send_packet_buffer);
netplay_deinit_socket_buffer(&connection->recv_packet_buffer);
}
}
if (netplay->connections && netplay->connections != &netplay->one_connection)
free(netplay->connections);
if (netplay->nat_traversal)
natt_free(&netplay->nat_traversal_state);
if (netplay->buffer)
{
for (i = 0; i < netplay->buffer_size; i++)
netplay_delta_frame_free(&netplay->buffer[i]);
free(netplay->buffer);
}
if (netplay->zbuffer)
free(netplay->zbuffer);
if (netplay->compress_nil.compression_stream)
{
netplay->compress_nil.compression_backend->stream_free(netplay->compress_nil.compression_stream);
netplay->compress_nil.decompression_backend->stream_free(netplay->compress_nil.decompression_stream);
}
if (netplay->compress_zlib.compression_stream)
{
netplay->compress_zlib.compression_backend->stream_free(netplay->compress_zlib.compression_stream);
netplay->compress_zlib.decompression_backend->stream_free(netplay->compress_zlib.decompression_stream);
}
if (netplay->addr)
freeaddrinfo_retro(netplay->addr);
free(netplay);
}

7
network/netplay/netplay_private.h
View File

@ -665,13 +665,6 @@ void netplay_recv_flush(struct socket_buffer *sbuf);
bool netplay_delta_frame_ready(netplay_t *netplay, struct delta_frame *delta,
uint32_t frame);
/**
* netplay_delta_frame_crc
*
* Get the CRC for the serialization of this frame.
*/
uint32_t netplay_delta_frame_crc(netplay_t *netplay, struct delta_frame *delta);
/**
* netplay_delta_frame_free
*