server.c

   1 /*
   2  * Netris -- A free networked version of T*tris
   3  * Copyright (C) 1994,1995,1996  Mark H. Weaver <mhw@netris.org>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  * $Id: game.c,v 1.39 1999/05/16 06:56:27 mhw Exp $
  20  */
  21
  22 #define NOEXT
  23 #include "netris.h"
  24
  25 #include <stdlib.h>
  26 #include <ctype.h>
  27 #include <string.h>
  28 #include <sys/types.h>
  29 #include <netinet/in.h>
  30 #include <unistd.h>
  31 #include <sys/socket.h>
  32 #include <netdb.h>
  33 #include <errno.h>
  34 #include <setjmp.h>
  35
  36 #include "util.h"
  37
  38 #define HEADER_SIZE sizeof(netint4[3])
  39
  40 static struct option options[] = {
  41         { "wait",        0, 0, 'w' },
  42         { "port",        1, 0, 'p' },
  43         { "quadra",      1, 0, 'q' },
  44         { "min-players", 1, 0, 'm' },
  45         { "max-players", 1, 0, 'x' },
  46         { "continuous",  1, 0, 'c' },
  47         { "speed",       1, 0, 'i' },
  48         { "seed",        1, 0, 's' },
  49         { "verbose",     0, 0, 'v' },
  50         { "info",        0, 0, 'H' },
  51         { "help",        0, 0, 'h' },
  52         { 0,             0, 0,  0  }
  53 };
  54
  55 static char minplayers = 2;
  56 static char maxplayers = 8;
  57 static char playercount;
  58 static char verbose = 0;
  59
  60 struct sockaddr_in addr;
  61
  62 MyEventType NetGenFunc(EventGenRec *gen, MyEvent *event);
  63 static EventGenRec netGen[MAX_SCREENS] = {
  64         { NULL, 0, FT_read, -1, NetGenFunc, EM_net, 0, "\0", 0, HEADER_SIZE }
  65 };
  66
  67 static MyEventType AlarmGenFunc(EventGenRec *gen, MyEvent *event);
  68 static EventGenRec alarmGen = {
  69         &alarmGen, 0, FT_read, -1, AlarmGenFunc, EM_alarm
  70 };
  71
  72 static MyEventType ConnGenFunc(EventGenRec *gen, MyEvent *event);
  73 static EventGenRec connGen = {
  74         NULL, 0, FT_read, -1, ConnGenFunc, EM_connect
  75 };
  76
  77 static EventGenRec *nextGen = &alarmGen;
  78
  79 static sigjmp_buf close_env;
  80
  81
  82 void SendPacketTo(short playa, short uid, NetPacketType type, int size, void *data)
  83 { //send to someone
  84         netint4 header[3];
  85
  86         if (netGen[playa].fd >= 0) {
  87                 if (verbose)
  88                         fprintf(stderr, ": send %d from %d to %d\n", type, uid, playa);
  89                 header[0] = hton4(uid);
  90                 header[1] = hton4(type);
  91                 header[2] = hton4(size + HEADER_SIZE);
  92                 if (MyWrite(netGen[playa].fd, header, HEADER_SIZE) != HEADER_SIZE)
  93                         die("write (header)");
  94                 if (size > 0 && data && MyWrite(netGen[playa].fd, data, size) != size)
  95                         die("write");
  96         }
  97 }
  98
  99 static MyEventType AlarmGenFunc(EventGenRec *gen, MyEvent *event)
 100 {
 101         return E_alarm;
 102 }
 103
 104 void SCloseNet(short playa)
 105 { //kick some connection's ass!
 106         MyEvent event;
 107
 108         if (netGen[playa].fd >= 0) {
 109                 if (Players[playa].alive >= 0) {
 110                         SendPacketTo(playa, 0, NP_endConn, 0, NULL);
 111                         do {} while (WaitMyEvent(&event, EM_net) != E_lostConn);
 112                 } //say bye to player
 113                 close(netGen[playa].fd);
 114                 netGen[playa].fd = -1;
 115         }
 116         if (netGen[playa].next)
 117                 RemoveEventGen(&netGen[playa]);
 118 }
 119
 120 void CloseNets(void)
 121 { //nou oogjes dicht en snaveltjes toe
 122         int i;
 123
 124         fprintf(stderr, "- Closing connections...\n");
 125         for (i = 1; i < MAX_SCREENS; i++)
 126                 SCloseNet(i); //bye everybuddy
 127         fprintf(stderr, "* All Done\n\n");
 128 }
 129
 130 MyEventType NetGenFunc(EventGenRec *gen, MyEvent *event)
 131 { //receive
 132         int result;
 133         short uid, type, size;
 134         netint4 *data = (netint4*)&(gen->buf);
 135
 136         result = MyRead(gen->fd, gen->buf + gen->bufSize,
 137                 gen->bufGoal - gen->bufSize);
 138         if (result < 0) {
 139                 fprintf(stderr, "- Closed connection to player #%d\n", gen->player);
 140                 return E_lostConn;
 141         }
 142         gen->bufSize += result;
 143         if (gen->bufSize < gen->bufGoal)
 144                 return E_none;
 145         // *ugly* memcpy(data, gen->buf, sizeof(data));
 146         uid = ntoh4(data[0]);
 147         type = ntoh4(data[1]);
 148         size = ntoh4(data[2]);
 149         gen->bufGoal = size;
 150         if (gen->bufSize < gen->bufGoal)
 151                 return E_none;
 152         gen->bufSize = 0;
 153         gen->bufGoal = HEADER_SIZE;
 154         event->u.net.sender = gen->player;
 155         event->u.net.uid = uid;
 156         event->u.net.type = type;
 157         event->u.net.size = size - HEADER_SIZE;
 158         event->u.net.data = gen->buf + HEADER_SIZE;
 159         if (type == NP_endConn) {
 160                 fprintf(stderr, "- Quit player #%d\n", gen->player);
 161                 return E_lostConn;
 162         } //client sent quit signal
 163         return E_net;
 164 }
 165
 166
 167 static MyEventType ConnGenFunc(EventGenRec *gen, MyEvent *event)
 168 {
 169         int addrLen;
 170         struct linger val2;
 171         int new;
 172
 173         addrLen = sizeof(addr);
 174         for (new = 1; new <= MAX_SCREENS; new++)
 175                 if (netGen[new].fd < 0) break;
 176         if (new > maxplayers) return;
 177
 178         if ((netGen[new].fd =
 179                 accept(gen->fd, (struct sockaddr *)&addr, &addrLen)) < 0)
 180                         die("accept");
 181         fprintf(stderr, "+ Connection: %s\n", inet_ntoa(addr.sin_addr));
 182         val2.l_onoff = 1;
 183         val2.l_linger = 0;
 184         setsockopt(netGen[new].fd, SOL_SOCKET, SO_LINGER,(void *)&val2,
 185                 sizeof(val2));
 186         AddEventGen(&netGen[new]);
 187         netGen[new].player = event->u.net.uid = new;
 188                         { //new connection; netGen already initialized in GenFunc
 189                                 struct hostent *host;
 190
 191                                 sprintf(Players[new].host, "%s", inet_ntoa(addr.sin_addr));
 192                                 if (addr.sin_family == AF_INET) {
 193                                         host = gethostbyaddr((void *)&addr.sin_addr,
 194                                                              sizeof(struct in_addr), AF_INET);
 195                                         if (host) {
 196                                                 strncpy(Players[new].host, host->h_name,
 197                                                         sizeof(Players[new].host) - 1);
 198                                                 Players[new].host[sizeof(Players[new].host) - 1] = 0;
 199                                         } //set player's hostname
 200                                 }
 201                         } //E_connect
 202         return E_connect;
 203 }
 204
 205 void CountPlayers(void)
 206 { //count number of players/teams
 207         int i, j;
 208         playercount = 0;
 209         for (i = 1; i < MAX_SCREENS; i++) if (Players[i].alive > 0) {
 210                 if (Players[i].team < 128) for (j = 1; j < i; j++)
 211                         if (Players[j].alive > 0 && (Players[j].team == Players[i].team)) {
 212                                 playercount--;
 213                                 break;
 214                         } //player of same team counted before
 215                 playercount++;
 216         } //player alive
 217 }
 218
 219 int StartServer(void)
 220 {
 221         MyEvent event;
 222         netint2 currentpiece[MAX_SCREENS];
 223         int playersReady = 0;
 224         int paused = 1;
 225         int i;
 226         char teams[10][7] = {
 227                 "", "Green", "Cyan", "Blue", "Purple",
 228                 "Red", "Grey", "White", "*Orange"
 229         };
 230
 231         do {
 232                 switch (WaitMyEvent(&event, EM_any)) {
 233                         case E_lostConn: //client went away :(
 234                                 Players[event.u.net.sender].alive = -1;
 235                                 for (i = 1; i < MAX_SCREENS; i++)
 236                                         if (Players[i].alive >= 0)
 237                                                 SendPacketTo(i, event.u.net.sender,
 238                                                         NP_part, sizeof(Players[0].alive),
 239                                                         &Players[event.u.net.sender].alive);
 240                                 SCloseNet(event.u.net.sender);
 241                                 break; //NP_endConn
 242                         case E_net:
 243                                 if (verbose) fprintf(stderr, ": %d sent %d\n",
 244                                         netGen[event.u.net.sender].fd, event.u.net.type);
 245                                 switch(event.u.net.type) {
 246                                         case NP_hello:
 247 //                                              if (event.u.net.type != NP_hello) ByeClient(new);
 248                                         {
 249                                                 netint4 versiondata[2];
 250                                                 char data[255];
 251                                                 int major;
 252                                                 int protocolVersion;
 253
 254                                                 memcpy(versiondata, event.u.net.data,
 255                                                         sizeof(versiondata));
 256                                                 major = ntoh4(versiondata[0]);
 257                                                 protocolVersion = ntoh4(versiondata[1]);
 258                                                 if (major != MAJOR_VERSION
 259                                                  || protocolVersion != PROTOCOL_VERSION) {
 260                                                         snprintf(data, sizeof(data),
 261                                                                 "Version mismatch: received %d.%d",
 262                                                                 major, protocolVersion);
 263                                                         fprintf(stderr, "= Wrong version player #%d (%s)\n",
 264                                                                 event.u.net.sender, data);
 265                                                         SendPacketTo(event.u.net.sender, 0, NP_error,
 266                                                                 strlen(data)+1, data);
 267                                                         SCloseNet(event.u.net.sender);
 268                                                 } //version mismatch
 269                                                 fprintf(stderr, "* Accepted player #%d\n",
 270                                                         event.u.net.sender);
 271                                                 break;
 272                                         } //NP_hello
 273                                         case NP_newPlayer:
 274                                         //receive player details and return other players
 275                                                 memcpy(&Players[event.u.net.sender],
 276                                                         event.u.net.data, event.u.net.size);
 277                                                 if (Players[event.u.net.sender].team < 1
 278                                                 || Players[event.u.net.sender].team > 7) {
 279                                                         int team;
 280
 281                                                         for (team = 1; team < 7; team++) {
 282                                                                 for (i = 1; i < MAX_SCREENS; i++)
 283                                                                         if ((Players[i].alive > 0) && (Players[i].team == team))
 284                                                                                 break; //team in use
 285                                                                 if (i==MAX_SCREENS) break;
 286                                                         } //find unused team
 287                                                         Players[event.u.net.sender].team = team;
 288                                                         SendPacketTo(event.u.net.sender, event.u.net.sender, NP_team,
 289                                                                 sizeof(Players[event.u.net.sender].team),
 290                                                                 &Players[event.u.net.sender].team);
 291                                                 } //invalid team
 292                                                 if (Game.started < 2)
 293                                                         Players[event.u.net.sender].flags |= SCF_paused;
 294                                                 if (!Game.continuous && Game.started >= 2) {
 295                                                         char data[40];
 296                                                         strcpy(data, "Can't join: Game has already started");
 297                                                         fprintf(stderr, "- Can't join player #%d in "
 298                                                                 "non-continuous game\n", event.u.net.sender);
 299                                                         SendPacketTo(event.u.net.sender, 0, NP_error,
 300                                                                 strlen(data)+1, data);
 301 //                                                      SCloseNet(event.u.net.sender, 0);
 302                                                         break;
 303                                                 } //can't join started game
 304                                                 {
 305                                                         static struct {
 306                                                                 int playerflags;
 307                                                                 int gravity;    //1
 308                                                                 int started;    //2
 309                                                                 int continuous; //3
 310                                                                 long seed;              //4
 311                                                                 int initspeed;  //5
 312                                                         } data;
 313
 314                                                         memcpy(&data, &Players[event.u.net.sender].flags,
 315                                                                 sizeof(data.playerflags));
 316                                                         memcpy(&data.gravity, &Game,
 317                                                                 sizeof(data) - sizeof(data.playerflags));
 318                                                         SendPacketTo(event.u.net.sender, 0, NP_gamedata,
 319                                                                 sizeof(data), &data);
 320                                                 } //send game options
 321                                                 for (i = 1; i < MAX_SCREENS; i++)
 322                                                         if (netGen[i].fd >= 0 && i != event.u.net.sender) {
 323                                                                 SendPacketTo(event.u.net.sender, i,
 324                                                                         NP_newPlayer, sizeof(_Player), &Players[i]);
 325                                                                 SendPacketTo(event.u.net.sender, i, NP_newPiece,
 326                                                                         sizeof(Players[i].curShape), &Players[i].curShape);
 327                                                                 SendPacketTo(i, event.u.net.sender, NP_newPlayer,
 328                                                                         sizeof(_Player), &Players[event.u.net.sender]);
 329                                                         } //send (to) players
 330                                                 fprintf(stderr, "> Joined player #%d: %s <%s> (%s)\n",
 331                                                         event.u.net.sender,
 332                                                         Players[event.u.net.sender].name,
 333                                                         Players[event.u.net.sender].host,
 334                                                         teams[Players[event.u.net.sender].team]);
 335                                                 if (++playersReady >= minplayers) {
 336                                                         if (Game.started > 1)
 337                                                                 SendPacketTo(event.u.net.sender, 0,
 338                                                                         NP_start, 0, NULL);
 339 /*                                                      else {
 340                                                                 fprintf(stderr, "* Starting game (%010d)\n",
 341                                                                         Game.seed);
 342                                                                 for (i = 1; i < MAX_SCREENS; i++)
 343                                                                         SendPacketTo(i, 0, NP_start, 0, NULL);
 344                                                                 Game.started++;
 345                                                         } //first goahead (to all)*/
 346                                                 } //give go ahead
 347                                                 break; //NP_playerdata
 348                                         case NP_newPiece:
 349                                                 memcpy(&Players[event.u.net.sender].curShape,
 350                                                         event.u.net.data, sizeof(Players[0].curShape));
 351                                                 goto sendtoall;
 352                                         case NP_argghhh:
 353                                                 Players[event.u.net.sender].alive = 0;
 354                                                 fprintf(stderr, "< Player #%d died\n",
 355                                                         event.u.net.sender);
 356                                                 //check for unpaused game
 357                                         case NP_pause:
 358                                         {
 359                                                 Players[event.u.net.sender].flags ^= SCF_paused;
 360                                                 paused = Game.started < 1;
 361                                                 for (i = 1; i < MAX_SCREENS; i++)
 362                                                         if (Players[i].alive > 0)
 363                                                                 paused |= Players[i].flags & SCF_paused;
 364                                                 fprintf(stderr, "* Player #%d (un)paused (pause=%d)\n",
 365                                                         event.u.net.sender, paused);
 366                                                 if (paused) paused = 1;
 367                                                 goto sendtoall;
 368                                         } //NP_pause
 369                                         default: //relay data to all players
 370                                         sendtoall:
 371 //                                              if (event.u.net.type >= NP_pause)
 372                                                 if (event.u.net.type >= NP_rotright
 373                                                  && Game.started < 2)
 374                                                         break;
 375                                                 for (i = 1; i < MAX_SCREENS; i++)
 376                                                         if (i != event.u.net.sender)
 377                                                         if (event.u.net.type != NP_giveJunk ||
 378                                                         Players[i].team != Players[event.u.net.sender].team)
 379                                                                 SendPacketTo(i, event.u.net.sender,
 380                                                                         event.u.net.type, event.u.net.size,
 381                                                                         event.u.net.data);
 382                                                 break; //>=NP_paused
 383                                 }
 384                                 break; //E_net
 385                         case E_connect:
 386                         { //new connection; netGen already initialized in GenFunc
 387                                 char serverdata[255];
 388
 389                                 sprintf(serverdata, "Netris server %s", version_string);
 390                                 SendPacketTo(event.u.net.uid, event.u.net.uid, NP_hello,
 391                                         strlen(serverdata)+1, serverdata);
 392                                 break;
 393                         } //E_connect
 394                 } //event
 395                 CountPlayers();
 396                 if (Game.started < 1) {
 397                         if (playercount > 1) {
 398                                 fprintf(stderr, "* Game (%010d) ready to start\n", Game.seed);
 399                                 Game.started++;
 400                         } //give goahead
 401                 } //game not yet started
 402                 else {
 403                         if (playercount < 2) {
 404                                 fprintf(stderr, "* Stopping game\n");
 405                                 if (Game.seed) Game.seed++;
 406                                 if (Game.started > 1) for (i = 1; i < MAX_SCREENS; i++)
 407                                         if (Players[i].alive >= 0) {
 408                                                 Players[i].alive = 1;
 409                                                 Players[i].flags |= SCF_paused;
 410                                                 SendPacketTo(i, 0, NP_stop,
 411                                                         sizeof(Game.seed), &Game.seed);
 412                                         } //transmit game stop and set players not ready
 413                                 paused = 1;
 414                                 Game.started = 0;
 415                         } //too few players for game
 416                         if (Game.started == 1 && !paused) {
 417                                 Game.started++;
 418                                 fprintf(stderr, "* Game starts\n");
 419                                 for (i = 1; i < MAX_SCREENS; i++)
 420                                         if (Players[i].alive > 0)
 421                                                 SendPacketTo(i, 0, NP_start, 0, NULL);
 422                         } //everybody ready to start
 423                 } //game (ready to) start(ed)
 424         } while (1);
 425         fprintf(stderr, "* Exiting server\n");
 426 }
 427
 428
 429 void SHeader(void)
 430 {
 431         fprintf(stderr,
 432                 "NETRIS Server %s\t(c) 2002 Shiar <shiar@shiar.org>\n\n",
 433                 version_string);
 434 }
 435
 436 void SUsage(void)
 437 {
 438         SHeader();
 439         fprintf(stderr,
 440                 "Usage: netris <options>\n"
 441                 "\n"
 442                 "  -h, --help\t\tPrint this usage information\n"
 443                 "  -H, --info\t\tShow distribution and warranty information\n"
 444                 "\n"
 445                 "  -p, --port <port>\tSet port number (default is %d)\n"
 446                 "\n"
 447                 "  -s, --seed <seed>\tStart with given random seed\n"
 448                 "  -i, --speed <sec>\tSet the initial step-down interval, in seconds\n"
 449                 "  -m, --min-players <2>\tNumber of players required before starting the game\n"
 450                 "  -x, --max-players <8>\tMaximum number of players allowed in the game\n"
 451                 "  -c, --continuous\tDon'n quit the game\n"
 452                 "\n", DEFAULT_PORT);
 453 }
 454
 455 void WriteConf(void)
 456 {
 457         FILE *file_out;
 458
 459         file_out = fopen(CONFIG_FILE, "w");
 460         if (file_out == NULL) {
 461                 perror("Error writing config file");
 462                 exit(1);
 463         }
 464
 465         fprintf(file_out, "### NETRIS %s Config file ###\n\n", version_string);
 466
 467         fclose(file_out);
 468         fprintf(stderr, "Wrote new game configuration to %s\n", CONFIG_FILE);
 469 }
 470
 471 void HandleOption(char tag, char *value)
 472 {
 473         switch (tag) {
 474                 case 'v':  //verbose
 475                         verbose = 1;
 476                         break;
 477                 case 'p':  //port
 478                         port = atoi(value);
 479                         break;
 480                 case 'c':  //min-players
 481                         Game.continuous = atoi(value);
 482                         break;
 483                 case 'm':  //min-players
 484                         minplayers = atoi(value);
 485                         break;
 486                 case 'x':  //max-players
 487                         maxplayers = atoi(value);
 488                         if (maxplayers >= MAX_SCREENS)
 489                                 maxplayers = MAX_SCREENS;
 490                         break;
 491                 case 'q':  //quadra-style gravity
 492                         Game.gravity ^= 1;
 493                         break;
 494                 case 'i':  //speed (of level 1)
 495                         Game.initspeed = atof(value) * 1e6;
 496                         break;
 497                 case 's':  //seed
 498                         Game.seed = atoi(value);
 499                         break;
 500                 case 'H':  //info
 501                         SHeader();
 502                         DistInfo(); exit(0);
 503                 case 'h':  //help
 504                         SUsage(); exit(0);
 505                 default:
 506                         break;
 507         }
 508 }
 509
 510 void ReadConf(char *filename)
 511 {
 512         FILE *file_in;
 513         char buf[513];
 514         int i;
 515         char *ch;
 516         char tag[81], value[81];
 517
 518         file_in = fopen(filename, "r");
 519         if (file_in) {
 520                 while (fgets(buf, 512, file_in) != NULL) {
 521                         if ((ch = strchr(buf, '#')))
 522                                 *ch = '\0'; // truncate string from # char
 523                         for (i = strlen(buf)-1; i >= 0; i--)
 524                                 if (buf[i] == ' '  || buf[i] == '\t'
 525                                  || buf[i] == '\n' || buf[i] == 13)
 526                                         buf[i] = '\0';
 527                                 else break;
 528
 529                         sscanf(buf, "%80[^= \t] = %80[^\n]", tag, value);
 530                         for (i = 0; options[i].name; i++){
 531                                 if (!strcasecmp(options[i].name, tag)) {
 532                                         HandleOption(options[i].val, value);
 533                                         break;
 534                                 }
 535                         }
 536                 }
 537                 fclose(file_in);
 538         } //read file
 539         else {
 540                 fprintf(stderr, "Unable to open config file %s.\n", filename);
 541         } //defaults
 542
 543 }
 544
 545 void CatchInt(int sig)
 546 {
 547         siglongjmp(close_env, 1);
 548 }
 549
 550 int main(int argc, char **argv)
 551 {
 552         char ch;
 553
 554         if (sigsetjmp(close_env, 1)) exit(0);
 555         signal(SIGINT, CatchInt);
 556         port = DEFAULT_PORT;
 557         maxplayers = 8;
 558         Game.initspeed = DEFAULT_INTERVAL;
 559         Game.seed = time(0);
 560         Game.gravity = 0;
 561         {
 562                 int i;
 563
 564                 for (i = 1; i < MAX_SCREENS; i++)
 565                         Players[i].alive = -1;
 566         }
 567
 568 //      if (getopt(argc, argv, "f:") == 'f')
 569 //              ReadConf(optarg);
 570 //      else
 571         ReadConf(CONFIG_FILE);
 572         while ((ch = getopt_long(
 573                 argc, argv, "hHvqp:i:s:c:m:x:", options, NULL
 574         )) != -1)
 575                 HandleOption(ch, optarg);
 576         if (optind < argc) {
 577                 SUsage();
 578                 exit(1);
 579         }
 580 //      WriteConf();
 581
 582         SHeader();
 583
 584         {
 585                 int i;
 586
 587                 for (i = 1; i < MAX_SCREENS; i++)
 588                         memcpy(&netGen[i], &netGen[0], sizeof(EventGenRec));
 589         } //setup netGen var
 590
 591         AtExit(CloseNets);
 592
 593         {
 594                 int val1;
 595
 596                 memset(&addr, 0, sizeof(addr));
 597                 addr.sin_family = AF_INET;
 598                 addr.sin_port = htons(port);
 599                 addr.sin_addr.s_addr = htonl(INADDR_ANY);
 600                 if ((connGen.fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
 601                         die("socket");
 602                 val1 = 1;
 603                 setsockopt(connGen.fd, SOL_SOCKET, SO_REUSEADDR,
 604                         (void *)&val1, sizeof(val1));
 605                 if (bind(connGen.fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
 606                         die("bind");
 607                 if (listen(connGen.fd, 1) < 0)
 608                         die("listen");
 609
 610                 AddEventGen(&connGen);
 611         } //setup listening sock
 612
 613         StartServer(); //server loop
 614
 615         return 0;
 616 }
 617