network.c

   1 #include "skaterift.h"
   2 #include "vg/vg_steam.h"
   3 #include "vg/vg_steam_networking.h"
   4 #include "vg/vg_steam_auth.h"
   5 #include "vg/vg_steam_friends.h"
   6 #include "player.h"
   7 #include "network.h"
   8 #include "network_msg.h"
   9 #include "network_common.h"
  10 #include "player_remote.h"
  11 #include "world.h"
  12 #include "world_sfd.h"
  13 #include "world_routes.h"
  14 #include "vg/vg_imgui.h"
  15 #include "gui.h"
  16 #include "ent_region.h"
  17 #include "vg/vg_loader.h"
  18
  19 #ifdef _WIN32
  20  #include <winsock2.h>
  21  #include <ws2tcpip.h>
  22 #else
  23  #include <sys/socket.h>
  24  #include <sys/types.h>
  25  #include <netdb.h>
  26 #endif
  27
  28 struct network_client network_client =
  29 {
  30    .auth_mode = eServerModeAuthentication,
  31    .state = k_ESteamNetworkingConnectionState_None,
  32    .last_intent_change = -99999.9
  33 };
  34
  35 static void scores_update(void);
  36
  37 int packet_minsize( SteamNetworkingMessage_t *msg, u32 size ){
  38    if( msg->m_cbSize < size ) {
  39       vg_error( "Invalid packet size (must be at least %u)\n", size );
  40       return 0;
  41    }
  42    else{
  43       return 1;
  44    }
  45 }
  46
  47 static void on_auth_ticket_recieved( void *result, void *context ){
  48    EncryptedAppTicketResponse_t *response = result;
  49
  50    if( response->m_eResult == k_EResultOK ){
  51       vg_info( "  New app ticket ready\n" );
  52    }
  53    else{
  54       vg_warn( "  Could not request new encrypted app ticket (%u)\n",
  55                   response->m_eResult );
  56    }
  57
  58    if( SteamAPI_ISteamUser_GetEncryptedAppTicket( hSteamUser,
  59             network_client.app_symmetric_key,
  60             vg_list_size(network_client.app_symmetric_key),
  61             &network_client.app_key_length )){
  62       vg_success( "  Loaded app ticket\n" );
  63    }
  64    else{
  65       vg_error( "  No ticket availible\n" );
  66       network_client.app_key_length = 0;
  67    }
  68 }
  69
  70 static void request_auth_ticket(void){
  71    /*
  72     * TODO Check for one thats cached on the disk and load it.
  73     * This might be OK though because steam seems to cache the result
  74     */
  75
  76    vg_info( "Requesting new authorization ticket\n" );
  77
  78    vg_steam_async_call *call = vg_alloc_async_steam_api_call();
  79    call->userdata = NULL;
  80    call->p_handler = on_auth_ticket_recieved;
  81    call->id =
  82       SteamAPI_ISteamUser_RequestEncryptedAppTicket( hSteamUser, NULL, 0 );
  83 }
  84
  85 static void network_send_username(void){
  86    if( !network_connected() )
  87       return;
  88
  89    netmsg_playerusername *update = alloca( sizeof(netmsg_playerusername)+
  90                                            NETWORK_USERNAME_MAX );
  91    update->inetmsg_id = k_inetmsg_playerusername;
  92    update->index = 0xff;
  93
  94    ISteamFriends *hSteamFriends = SteamAPI_SteamFriends();
  95    const char *username = SteamAPI_ISteamFriends_GetPersonaName(hSteamFriends);
  96    u32 chs = str_utf8_collapse( username, update->name, NETWORK_USERNAME_MAX );
  97
  98    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
  99          hSteamNetworkingSockets, network_client.remote,
 100          update, sizeof(netmsg_playerusername)+chs+1,
 101          k_nSteamNetworkingSend_Reliable, NULL );
 102 }
 103
 104 void network_send_region(void)
 105 {
 106    if( !network_connected() )
 107       return;
 108
 109    netmsg_region *region = alloca( sizeof(netmsg_region) + NETWORK_REGION_MAX );
 110
 111    region->inetmsg_id = k_inetmsg_region;
 112    region->client = 0;
 113    region->flags = global_ent_region.flags;
 114
 115    u32 l = vg_strncpy( global_ent_region.location, region->loc,
 116                        NETWORK_REGION_MAX, k_strncpy_always_add_null );
 117
 118    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 119          hSteamNetworkingSockets, network_client.remote,
 120          region, sizeof(netmsg_region)+l+1,
 121          k_nSteamNetworkingSend_Reliable, NULL );
 122 }
 123
 124 static void network_send_request( netmsg_request *req, vg_msg *body,
 125                                   void (*callback)(
 126                                      netmsg_request *res, vg_msg *body,
 127                                      u64 userdata),
 128                                   u64 userdata ){
 129    u32 len = 0;
 130    if( body ){
 131       len = body->cur.co;
 132       vg_info( "Request scoreboard. Info (%u):\n", body->cur.co );
 133       vg_msg_print( body, len );
 134
 135       if( body->error != k_vg_msg_error_OK ){
 136          vg_error( "Body not OK\n" );
 137          return;
 138       }
 139    }
 140
 141    if( callback ){
 142       req->id = vg_pool_lru( &network_client.request_pool );
 143       if( req->id ){
 144          vg_pool_watch( &network_client.request_pool, req->id );
 145          struct network_request *pn =
 146             vg_pool_item( &network_client.request_pool, req->id );
 147          pn->callback = callback;
 148          pn->sendtime = vg.time_real;
 149          pn->userdata = userdata;
 150       }
 151       else{
 152          vg_error( "Unable to send request. Pool is full.\n" );
 153          return;
 154       }
 155    }
 156    else
 157       req->id = 0;
 158
 159    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 160          hSteamNetworkingSockets, network_client.remote,
 161          req, sizeof(netmsg_request)+len,
 162          k_nSteamNetworkingSend_Reliable, NULL );
 163 }
 164
 165 static void network_scoreboard_callback( netmsg_request *res, vg_msg *body,
 166                                          u64 userdata ){
 167    world_instance *world = world_current_instance();
 168
 169    world_routes_recv_scoreboard( world, body, userdata, res->status );
 170    if( userdata == world_sfd.active_route_board )
 171       world_sfd_compile_active_scores();
 172 }
 173
 174
 175
 176 /* mod_uid: world mod uid,
 177  * route_uid: run name (just a string)
 178  * week:
 179  *   0   ALL TIME
 180  *   1   CURRENT WEEK
 181  *   2   ALL TIME + CURRENT WEEK
 182  *   .
 183  *   10+ specific week index
 184  */
 185 void network_request_scoreboard( const char *mod_uid,
 186                                  const char *route_uid,
 187                                  u32 week, u64 userdata ){
 188    if( !network_connected() )
 189       return;
 190
 191    netmsg_request *req = alloca( sizeof(netmsg_request) + 512 );
 192    req->inetmsg_id = k_inetmsg_request;
 193
 194    vg_msg data;
 195    vg_msg_init( &data, req->q, 512 );
 196    vg_msg_wkvstr( &data, "endpoint", "scoreboard" );
 197    vg_msg_wkvstr( &data, "mod", mod_uid );
 198    vg_msg_wkvstr( &data, "route", route_uid );
 199    vg_msg_wkvnum( &data, "week", k_vg_msg_u32, 1, &week );
 200    network_send_request( req, &data, network_scoreboard_callback, userdata );
 201 }
 202
 203 static void network_publish_callback( netmsg_request *res, vg_msg *body,
 204                                       u64 userdata ){
 205    if( res->status != k_request_status_ok ){
 206       vg_error( "Publish laptime, server error #%d\n", (i32)res->status );
 207    }
 208 }
 209
 210 void network_publish_laptime( const char *mod_uid,
 211                               const char *route_uid, f64 lap_time ){
 212    if( !network_connected() )
 213       return;
 214
 215    i32 time_centiseconds = lap_time * 100.0;
 216
 217    netmsg_request *req = alloca( sizeof(netmsg_request) + 512 );
 218    req->inetmsg_id = k_inetmsg_request;
 219
 220    vg_msg data;
 221    vg_msg_init( &data, req->q, 512 );
 222    vg_msg_wkvstr( &data, "endpoint", "setlap" );
 223    vg_msg_wkvstr( &data, "mod", mod_uid );
 224    vg_msg_wkvstr( &data, "route", route_uid );
 225    vg_msg_wkvnum( &data, "time", k_vg_msg_i32, 1, &time_centiseconds );
 226    network_send_request( req, &data, network_publish_callback, 0 );
 227 }
 228
 229 static void network_request_rx_300_400( SteamNetworkingMessage_t *msg ){
 230    netmsg_blank *tmp = msg->m_pData;
 231
 232    if( tmp->inetmsg_id == k_inetmsg_request ){
 233
 234    }
 235    else if( tmp->inetmsg_id == k_inetmsg_response ){
 236       netmsg_request *res = (netmsg_request *)msg->m_pData;
 237
 238       vg_msg *body = NULL;
 239
 240       vg_msg data;
 241       if( res->status == k_request_status_ok ){
 242          vg_msg_init( &data, res->q, msg->m_cbSize - sizeof(netmsg_request) );
 243          vg_success( "Response to #%d:\n", (i32)res->id );
 244          vg_msg_print( &data, data.max );
 245          body = &data;
 246       }
 247       else {
 248          vg_warn( "Server response to #%d: %d\n", (i32)res->id, res->status );
 249       }
 250
 251       if( res->id ){
 252          struct network_request *pn =
 253             vg_pool_item( &network_client.request_pool, res->id );
 254          pn->callback( res, body, pn->userdata );
 255          vg_pool_unwatch( &network_client.request_pool, res->id );
 256       }
 257    }
 258 }
 259
 260 void network_send_item( enum netmsg_playeritem_type type )
 261 {
 262    if( !network_connected() )
 263       return;
 264
 265    netmsg_playeritem *item =
 266       alloca( sizeof(netmsg_playeritem) + ADDON_UID_MAX );
 267    item->inetmsg_id = k_inetmsg_playeritem;
 268    item->type_index = type;
 269    item->client = 0;
 270
 271    if( (type == k_netmsg_playeritem_world0) ||
 272        (type == k_netmsg_playeritem_world1) ){
 273
 274       enum world_purpose purpose = type - k_netmsg_playeritem_world0;
 275       addon_reg *reg = world_static.instance_addons[ purpose ];
 276
 277       if( reg )
 278          addon_alias_uid( &reg->alias, item->uid );
 279       else
 280          item->uid[0] = '\0';
 281    }
 282    else{
 283       u16 view_id = 0;
 284       enum addon_type addon_type = k_addon_type_none;
 285       if( type == k_netmsg_playeritem_board ){
 286          view_id = localplayer.board_view_slot;
 287          addon_type = k_addon_type_board;
 288       }
 289       else if( type == k_netmsg_playeritem_player ){
 290          view_id = localplayer.playermodel_view_slot;
 291          addon_type = k_addon_type_player;
 292       }
 293
 294       struct addon_cache *cache = &addon_system.cache[addon_type];
 295       vg_pool *pool = &cache->pool;
 296
 297       SDL_AtomicLock( &addon_system.sl_cache_using_resources );
 298       addon_cache_entry *entry = vg_pool_item( pool, view_id );
 299       addon_alias_uid( &entry->reg_ptr->alias, item->uid );
 300       SDL_AtomicUnlock( &addon_system.sl_cache_using_resources );
 301    }
 302
 303    vg_info( "send equip: [%u] %s\n",
 304             item->type_index, item->uid );
 305    u32 chs = strlen(item->uid);
 306
 307    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 308          hSteamNetworkingSockets, network_client.remote,
 309          item, sizeof(netmsg_playeritem)+chs+1,
 310          k_nSteamNetworkingSend_Reliable, NULL );
 311 }
 312
 313 static void network_disconnect(void){
 314    SteamAPI_ISteamNetworkingSockets_CloseConnection(
 315          hSteamNetworkingSockets, network_client.remote, 0, NULL, 0 );
 316    network_client.remote = 0;
 317    network_client.state = k_ESteamNetworkingConnectionState_None;
 318
 319    for( int i=0; i<vg_list_size(netplayers.list); i++ ){
 320       netplayers.list[i].active = 0;
 321    }
 322 }
 323
 324 void network_status_string( vg_str *str, u32 *colour )
 325 {
 326    if( skaterift.demo_mode ){
 327       vg_strcat( str, "Offline" );
 328       return;
 329    }
 330
 331    if( steam_ready ){
 332       if( network_client.user_intent == k_server_intent_offline ){
 333          vg_strcat( str, "Offline" );
 334       }
 335       else {
 336          ESteamNetworkingConnectionState state = network_client.state;
 337
 338          if( state == k_ESteamNetworkingConnectionState_None )
 339             vg_strcat( str, "No Connection" );
 340          else if( state == k_ESteamNetworkingConnectionState_Connecting )
 341          {
 342             vg_strcatf( str, "Connecting...\n%s", network_client.host_adress );
 343
 344             if( network_client.retries ){
 345                vg_strcat( str, "\n(" );
 346                vg_strcati32( str, network_client.retries );
 347                vg_strcat( str, " retries)" );
 348             }
 349          }
 350          else if( state == k_ESteamNetworkingConnectionState_Connected ){
 351             vg_strcatf( str, "Connected to:\n%s", network_client.host_adress );
 352             *colour = 0xff00a020;
 353          }
 354          else if( state == k_ESteamNetworkingConnectionState_ClosedByPeer )
 355             vg_strcat( str, "Connection Closed" );
 356          else if( state == k_ESteamNetworkingConnectionState_FindingRoute )
 357             vg_strcat( str, "Finding Route" );
 358          else if( state ==
 359                k_ESteamNetworkingConnectionState_ProblemDetectedLocally){
 360             vg_strcat( str, "Problem Detected\nLocally" );
 361             *colour = 0xff0000a0;
 362          }
 363          else
 364             vg_strcat( str, "???" );
 365       }
 366    }
 367    else {
 368       vg_strcat( str, "Steam Offline" );
 369       *colour = 0xff0000a0;
 370    }
 371 }
 372
 373 void render_server_status_gui(void)
 374 {
 375    render_fb_bind( gpipeline.fb_workshop_preview, 0 );
 376
 377    /* HACK */
 378         vg_ui.cur_vert = 0;
 379         vg_ui.cur_indice = 0;
 380    vg_ui.vert_start = 0;
 381    vg_ui.indice_start = 0;
 382
 383    ui_rect r = { 0, 0, 128, 48 };
 384
 385    char buf[128];
 386    vg_str str;
 387    vg_strnull( &str, buf, sizeof(buf) );
 388
 389    u32 bg = 0xff000000;
 390    network_status_string( &str, &bg );
 391
 392    ui_fill( r, bg );
 393    ui_text( r, buf, 1, k_ui_align_center, 0 );
 394    ui_flush( k_ui_shader_colour, 128, 48 );
 395
 396    skaterift.rt_textures[ k_skaterift_rt_server_status ] =
 397       gpipeline.fb_workshop_preview->attachments[0].id;
 398 }
 399
 400 static void on_server_connect_status( CallbackMsg_t *msg ){
 401    SteamNetConnectionStatusChangedCallback_t *info = (void *)msg->m_pubParam;
 402    vg_info( "  Connection status changed for %lu\n", info->m_hConn );
 403    vg_info( "  %s -> %s\n",
 404          string_ESteamNetworkingConnectionState(info->m_eOldState),
 405          string_ESteamNetworkingConnectionState(info->m_info.m_eState) );
 406
 407    if( info->m_hConn == network_client.remote ){
 408       network_client.state = info->m_info.m_eState;
 409
 410       if( info->m_info.m_eState ==
 411             k_ESteamNetworkingConnectionState_Connected ){
 412          vg_success("  Connected to remote server.. authenticating\n");
 413
 414          /* send version info to server */
 415          netmsg_version version;
 416          version.inetmsg_id = k_inetmsg_version;
 417          version.version = NETWORK_SKATERIFT_VERSION;
 418          SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 419                hSteamNetworkingSockets, network_client.remote, &version,
 420                sizeof(netmsg_version), k_nSteamNetworkingSend_Reliable, NULL );
 421
 422          /* TODO: We should really wait to see if the server is in auth mode
 423           * first... */
 424          u32 size = sizeof(netmsg_auth) + network_client.app_key_length;
 425          netmsg_auth *auth = alloca(size);
 426          auth->inetmsg_id = k_inetmsg_auth;
 427          auth->ticket_length = network_client.app_key_length;
 428          for( int i=0; i<network_client.app_key_length; i++ )
 429             auth->ticket[i] = network_client.app_symmetric_key[i];
 430
 431          SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 432                hSteamNetworkingSockets, network_client.remote, auth, size,
 433                k_nSteamNetworkingSend_Reliable, NULL );
 434       }
 435       else if( info->m_info.m_eState ==
 436             k_ESteamNetworkingConnectionState_ClosedByPeer ){
 437
 438          if( info->m_info.m_eEndReason ==
 439                k_ESteamNetConnectionEnd_Misc_InternalError ){
 440             network_client.retries = 40;
 441          }
 442          network_disconnect();
 443       }
 444       else if( info->m_info.m_eState ==
 445             k_ESteamNetworkingConnectionState_ProblemDetectedLocally ){
 446          network_disconnect();
 447       }
 448    }
 449    else{
 450       //vg_warn( "  Recieved signal from unknown connection\n" );
 451    }
 452
 453    render_server_status_gui();
 454 }
 455
 456 static void on_persona_state_change( CallbackMsg_t *msg ){
 457    if( !network_connected() )
 458       return;
 459
 460    PersonaStateChange_t *info = (void *)msg->m_pubParam;
 461    ISteamUser *hSteamUser = SteamAPI_SteamUser();
 462
 463    vg_info( "User: %llu, change: %u\n", info->m_ulSteamID,
 464                                         info->m_nChangeFlags );
 465
 466    if( info->m_ulSteamID == SteamAPI_ISteamUser_GetSteamID(hSteamUser) ){
 467       if( info->m_nChangeFlags & k_EPersonaChangeName ){
 468          network_send_username();
 469       }
 470    }
 471
 472    if( info->m_nChangeFlags & k_EPersonaChangeRelationshipChanged ){
 473       for( u32 i=0; i<NETWORK_MAX_PLAYERS; i ++ ){
 474          struct network_player *rp = &netplayers.list[i];
 475          if( rp->steamid == info->m_ulSteamID ){
 476             player_remote_update_friendflags( rp );
 477          }
 478       }
 479    }
 480 }
 481
 482 void network_set_host( const char *host_str, const char *port_str )
 483 {
 484    vg_strncpy( host_str, network_client.host_adress,
 485                sizeof(network_client.host_adress), k_strncpy_overflow_fatal );
 486
 487    memset( &network_client.ip, 0, sizeof(network_client.ip) );
 488    network_client.ip_resolved = 0;
 489
 490    if( port_str )
 491    {
 492       vg_strncpy( port_str, network_client.host_port,
 493                   sizeof(network_client.host_port), k_strncpy_overflow_fatal );
 494    }
 495    else
 496    {
 497       vg_str str;
 498       vg_strnull( &str, network_client.host_port,
 499                   sizeof(network_client.host_port) );
 500       vg_strcati32( &str, NETWORK_PORT );
 501    }
 502
 503    network_client.ip.m_port = atoi( network_client.host_port );
 504 }
 505
 506 static void network_connect(void)
 507 {
 508    VG_ASSERT( network_client.ip_resolved );
 509
 510    vg_info( "connecting...\n" );
 511    network_client.remote = SteamAPI_ISteamNetworkingSockets_ConnectByIPAddress(
 512                   hSteamNetworkingSockets, &network_client.ip, 0, NULL );
 513 }
 514
 515 static void network_sign_on_complete(void){
 516    vg_success( "Sign on completed\n" );
 517
 518    /* send our init info */
 519    network_send_username();
 520    for( u32 i=0; i<k_netmsg_playeritem_max; i ++ ){
 521       network_send_item(i);
 522    }
 523    network_send_region();
 524 }
 525
 526 static void poll_remote_connection(void){
 527    SteamNetworkingMessage_t *messages[32];
 528    int len;
 529
 530    for( int i=0; i<10; i++ ){
 531       len = SteamAPI_ISteamNetworkingSockets_ReceiveMessagesOnConnection(
 532             hSteamNetworkingSockets, network_client.remote,
 533             messages, vg_list_size(messages));
 534
 535       if( len <= 0 )
 536          return;
 537
 538       for( int i=0; i<len; i++ ){
 539          SteamNetworkingMessage_t *msg = messages[i];
 540
 541          if( msg->m_cbSize < sizeof(netmsg_blank) ){
 542             vg_warn( "Discarding message (too small: %d)\n", msg->m_cbSize );
 543             continue;
 544          }
 545
 546          netmsg_blank *tmp = msg->m_pData;
 547
 548          if( (tmp->inetmsg_id >= 200) && (tmp->inetmsg_id < 300) ){
 549             player_remote_rx_200_300( msg );
 550          }
 551          else if( (tmp->inetmsg_id >= 300) && (tmp->inetmsg_id < 400) ){
 552             network_request_rx_300_400( msg );
 553          }
 554          else {
 555             if( tmp->inetmsg_id == k_inetmsg_version ){
 556                netmsg_version *version = msg->m_pData;
 557                if( version->version != NETWORK_SKATERIFT_VERSION ){
 558                   network_disconnect();
 559                   /* we dont want to connect to this server ever */
 560                   network_client.retries = 999;
 561                   network_client.last_attempt = 999999999.9;
 562                   vg_error( "version mismatch with server\n" );
 563                }
 564                else {
 565                   network_client.remote_version = version->version;
 566                   network_sign_on_complete();
 567                }
 568             }
 569          }
 570
 571          SteamAPI_SteamNetworkingMessage_t_Release( msg );
 572       }
 573    }
 574 }
 575
 576 static void network_resolve_host_async( void *payload, u32 size )
 577 {
 578    u32 *status = payload;
 579    network_client.ip_resolved = *status;
 580
 581    char buf[256];
 582    SteamAPI_SteamNetworkingIPAddr_ToString( &network_client.ip, buf, 256, 1 );
 583    vg_info( "Resolved host address to: %s\n", buf );
 584 }
 585
 586 static void network_resolve_host_thread( void *_ )
 587 {
 588    vg_async_item *call = vg_async_alloc(8);
 589    u32 *status = call->payload;
 590    *status = 0;
 591
 592    if( (network_client.host_adress[0] >= '0') &&
 593        (network_client.host_adress[0] <= '9') )
 594    {
 595       SteamAPI_SteamNetworkingIPAddr_ParseString(
 596             &network_client.ip,
 597             network_client.host_adress );
 598       network_client.ip.m_port = atoi( network_client.host_port );
 599       *status = 1;
 600       goto end;
 601    }
 602
 603    vg_info( "Resolving host.. %s (:%s)\n",
 604              network_client.host_adress, network_client.host_port );
 605
 606    struct addrinfo  hints;
 607    struct addrinfo  *result;
 608
 609    /* Obtain address(es) matching host/port. */
 610
 611    memset( &hints, 0, sizeof(hints) );
 612    hints.ai_family = AF_INET6;
 613    hints.ai_socktype = SOCK_DGRAM;
 614    hints.ai_flags = AI_V4MAPPED | AI_ADDRCONFIG;
 615    hints.ai_protocol = 0;
 616
 617    int s = getaddrinfo( network_client.host_adress, network_client.host_port,
 618                         &hints, &result);
 619    if( s != 0 )
 620    {
 621 #ifndef _WIN32
 622       vg_error( "getaddrinfo: %s\n", gai_strerror(s) );
 623 #endif
 624
 625       if( !strcmp( network_client.host_adress, "skaterift.com" ) )
 626       {
 627          vg_warn( "getaddrinfo failed for skaterift.com;\n "
 628                   "falling back to a hardcoded IPv4\n" );
 629          strcpy( network_client.host_adress, "46.101.34.155" );
 630          SteamAPI_SteamNetworkingIPAddr_ParseString(
 631                &network_client.ip,
 632                network_client.host_adress );
 633          network_client.ip.m_port = NETWORK_PORT;
 634          *status = 1;
 635       }
 636
 637       goto end;
 638    }
 639
 640    struct sockaddr_in6 *inaddr = (struct sockaddr_in6 *)result->ai_addr;
 641    memcpy( network_client.ip.m_ipv6, &inaddr->sin6_addr, 16 );
 642    freeaddrinfo( result );
 643
 644    *status = 1;
 645
 646 end: vg_async_dispatch( call, network_resolve_host_async );
 647 }
 648
 649 void network_update(void)
 650 {
 651    if( !steam_ready )
 652       return;
 653
 654    ESteamNetworkingConnectionState state = network_client.state;
 655
 656    if( network_client.user_intent == k_server_intent_offline )
 657    {
 658       if( state != k_ESteamNetworkingConnectionState_None )
 659          network_disconnect();
 660
 661       return;
 662    }
 663
 664    if( state == k_ESteamNetworkingConnectionState_Connected )
 665    {
 666       poll_remote_connection();
 667       f64 frame_delta = vg.time_real - network_client.last_frame;
 668
 669       if( frame_delta > NETWORK_FRAMERATE )
 670       {
 671          network_client.last_frame = vg.time_real;
 672          remote_player_send_playerframe();
 673          localplayer.sfx_buffer_count = 0;
 674       }
 675
 676       remote_player_debug_update();
 677    }
 678    else
 679    {
 680       if( (state == k_ESteamNetworkingConnectionState_Connecting) ||
 681           (state == k_ESteamNetworkingConnectionState_FindingRoute) )
 682       {
 683          return;
 684       }
 685       else
 686       {
 687          f64 waited = vg.time_real - network_client.last_attempt,
 688              min_wait = 1.0;
 689
 690          if( network_client.retries > 5 )
 691             min_wait = 60.0;
 692
 693          if( waited < min_wait )
 694             return;
 695
 696          if( !network_client.ip_resolved )
 697          {
 698             if( vg_loader_availible() )
 699             {
 700                vg_loader_start( network_resolve_host_thread, NULL );
 701             }
 702             else return;
 703          }
 704          else
 705             network_connect();
 706
 707          network_client.retries ++;
 708          network_client.last_attempt = vg.time_real;
 709       }
 710    }
 711 }
 712
 713 void chat_send_message( const char *message )
 714 {
 715    if( !network_connected() ){
 716       return;
 717    }
 718
 719    netmsg_chat *chat = alloca( sizeof(netmsg_chat) + NETWORK_MAX_CHAT );
 720    chat->inetmsg_id = k_inetmsg_chat;
 721    chat->client = 0;
 722
 723    u32 l = vg_strncpy( message, chat->msg, NETWORK_MAX_CHAT,
 724                        k_strncpy_always_add_null );
 725
 726    SteamAPI_ISteamNetworkingSockets_SendMessageToConnection(
 727          hSteamNetworkingSockets, network_client.remote,
 728          chat, sizeof(netmsg_chat)+l+1,
 729          k_nSteamNetworkingSend_Reliable, NULL );
 730 }
 731
 732 static int cmd_network_send_message( int argc, const char *argv[] ){
 733    char buf[ NETWORK_MAX_CHAT ];
 734    vg_str str;
 735    vg_strnull( &str, buf, NETWORK_MAX_CHAT );
 736
 737    for( int i=0; i<argc; i ++ ){
 738       vg_strcat( &str, argv[i] );
 739
 740       if( i < argc-1 )
 741          vg_strcatch( &str, ' ' );
 742    }
 743
 744    chat_send_message( buf );
 745    return 0;
 746 }
 747
 748 void network_init(void)
 749 {
 750    vg_console_reg_var( "network_info", &network_client.network_info,
 751                        k_var_dtype_i32, VG_VAR_PERSISTENT );
 752    vg_console_reg_var( "auto_connect", &network_client.auto_connect,
 753                        k_var_dtype_i32, VG_VAR_PERSISTENT );
 754    if( steam_ready ){
 755       u32 alloc_size = sizeof(struct network_request)*NETWORK_MAX_REQUESTS;
 756       network_client.request_buffer =
 757          vg_linear_alloc( vg_mem.rtmemory, alloc_size );
 758       memset( network_client.request_buffer, 0, alloc_size );
 759
 760       vg_pool *pool = &network_client.request_pool;
 761       pool->buffer = network_client.request_buffer;
 762       pool->count = NETWORK_MAX_REQUESTS;
 763       pool->stride = sizeof( struct network_request );
 764       pool->offset = offsetof( struct network_request, poolnode );
 765       vg_pool_init( pool );
 766
 767       steam_register_callback( k_iSteamNetConnectionStatusChangedCallBack,
 768                                on_server_connect_status );
 769       steam_register_callback( k_iPersonaStateChange,
 770                                on_persona_state_change );
 771       request_auth_ticket();
 772
 773       vg_console_reg_cmd( "say", cmd_network_send_message, NULL );
 774    }
 775 }
 776
 777 void network_end(void)
 778 {
 779    /* TODO: Send buffered highscores that were not already */
 780    if( (network_client.state == k_ESteamNetworkingConnectionState_Connected) ||
 781        (network_client.state == k_ESteamNetworkingConnectionState_Connecting) )
 782    {
 783       SteamAPI_ISteamNetworkingSockets_CloseConnection(
 784             hSteamNetworkingSockets, network_client.remote, 0, NULL, 1 );
 785    }
 786 }