git.meshlink.io Git - meshlink/blob - src/net.c

   1 /*
   2     net.c -- most of the network code
   3     Copyright (C) 2014-2017 Guus Sliepen <guus@meshlink.io>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (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 along
  16     with this program; if not, write to the Free Software Foundation, Inc.,
  17     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "system.h"
  21
  22 #include "utils.h"
  23 #include "conf.h"
  24 #include "connection.h"
  25 #include "graph.h"
  26 #include "logger.h"
  27 #include "meshlink_internal.h"
  28 #include "meta.h"
  29 #include "net.h"
  30 #include "netutl.h"
  31 #include "protocol.h"
  32 #include "xalloc.h"
  33
  34 #include <assert.h>
  35
  36 #if !defined(min)
  37 static inline int min(int a, int b) {
  38         return a < b ? a : b;
  39 }
  40 #endif
  41
  42 static const int default_timeout = 5;
  43 static const int default_interval = 60;
  44
  45 /*
  46   Terminate a connection:
  47   - Mark it as inactive
  48   - Remove the edge representing this connection
  49   - Kill it with fire
  50   - Check if we need to retry making an outgoing connection
  51 */
  52 void terminate_connection(meshlink_handle_t *mesh, connection_t *c, bool report) {
  53         logger(mesh, MESHLINK_INFO, "Closing connection with %s", c->name);
  54
  55         c->status.active = false;
  56
  57         if(c->node && c->node->connection == c) {
  58                 c->node->connection = NULL;
  59         }
  60
  61         if(c->edge) {
  62                 if(report) {
  63                         send_del_edge(mesh, mesh->everyone, c->edge, 0);
  64                 }
  65
  66                 edge_del(mesh, c->edge);
  67                 c->edge = NULL;
  68
  69                 /* Run MST and SSSP algorithms */
  70
  71                 graph(mesh);
  72
  73                 /* If the node is not reachable anymore but we remember it had an edge to us, clean it up */
  74
  75                 if(report && c->node && !c->node->status.reachable) {
  76                         edge_t *e;
  77                         e = lookup_edge(c->node, mesh->self);
  78
  79                         if(e) {
  80                                 send_del_edge(mesh, mesh->everyone, e, 0);
  81                                 edge_del(mesh, e);
  82                         }
  83                 }
  84         }
  85
  86         outgoing_t *outgoing = c->outgoing;
  87         connection_del(mesh, c);
  88
  89         /* Check if this was our outgoing connection */
  90
  91         if(outgoing) {
  92                 do_outgoing_connection(mesh, outgoing);
  93         }
  94
  95 #ifndef HAVE_MINGW
  96         /* Clean up dead proxy processes */
  97
  98         while(waitpid(-1, NULL, WNOHANG) > 0);
  99
 100 #endif
 101 }
 102
 103 /*
 104   Check if the other end is active.
 105   If we have sent packets, but didn't receive any,
 106   then possibly the other end is dead. We send a
 107   PING request over the meta connection. If the other
 108   end does not reply in time, we consider them dead
 109   and close the connection.
 110 */
 111 static void timeout_handler(event_loop_t *loop, void *data) {
 112         assert(data);
 113
 114         meshlink_handle_t *mesh = loop->data;
 115         logger(mesh, MESHLINK_DEBUG, "timeout_handler()");
 116
 117         for list_each(connection_t, c, mesh->connections) {
 118                 int pingtimeout = c->node ? mesh->dev_class_traits[c->node->devclass].pingtimeout : default_timeout;
 119                 int pinginterval = c->node ? mesh->dev_class_traits[c->node->devclass].pinginterval : default_interval;
 120
 121                 if(c->outgoing && c->outgoing->timeout < 5) {
 122                         pingtimeout = 1;
 123                 }
 124
 125                 // Also make sure that if outstanding key requests for the UDP counterpart of a connection has timed out, we restart it.
 126                 if(c->node) {
 127                         if(c->node->status.waitingforkey && c->node->last_req_key + pingtimeout <= mesh->loop.now.tv_sec) {
 128                                 send_req_key(mesh, c->node);
 129                         }
 130                 }
 131
 132                 if(c->last_ping_time + pingtimeout <= mesh->loop.now.tv_sec) {
 133                         if(c->status.active) {
 134                                 if(c->status.pinged) {
 135                                         logger(mesh, MESHLINK_INFO, "%s didn't respond to PING in %ld seconds", c->name, (long)mesh->loop.now.tv_sec - c->last_ping_time);
 136                                 } else if(c->last_ping_time + pinginterval <= mesh->loop.now.tv_sec) {
 137                                         send_ping(mesh, c);
 138                                         continue;
 139                                 } else {
 140                                         continue;
 141                                 }
 142                         } else {
 143                                 if(c->status.connecting) {
 144                                         logger(mesh, MESHLINK_WARNING, "Timeout while connecting to %s", c->name);
 145                                 } else {
 146                                         logger(mesh, MESHLINK_WARNING, "Timeout from %s during authentication", c->name);
 147                                 }
 148                         }
 149
 150                         terminate_connection(mesh, c, c->status.active);
 151                 }
 152         }
 153
 154         timeout_set(&mesh->loop, data, &(struct timeval) {
 155                 1, prng(mesh, TIMER_FUDGE)
 156         });
 157 }
 158
 159 // devclass asc, last_successfull_connection desc
 160 static int node_compare_devclass_asc_lsc_desc(const void *a, const void *b) {
 161         const node_t *na = a, *nb = b;
 162
 163         if(na->devclass < nb->devclass) {
 164                 return -1;
 165         }
 166
 167         if(na->devclass > nb->devclass) {
 168                 return 1;
 169         }
 170
 171         if(na->last_successfull_connection == nb->last_successfull_connection) {
 172                 return 0;
 173         }
 174
 175         if(na->last_successfull_connection == 0 || na->last_successfull_connection > nb->last_successfull_connection) {
 176                 return -1;
 177         }
 178
 179         if(nb->last_successfull_connection == 0 || na->last_successfull_connection < nb->last_successfull_connection) {
 180                 return 1;
 181         }
 182
 183         if(na < nb) {
 184                 return -1;
 185         }
 186
 187         if(na > nb) {
 188                 return 1;
 189         }
 190
 191         return 0;
 192 }
 193
 194 // last_successfull_connection desc
 195 static int node_compare_lsc_desc(const void *a, const void *b) {
 196         const node_t *na = a, *nb = b;
 197
 198         if(na->last_successfull_connection == nb->last_successfull_connection) {
 199                 return 0;
 200         }
 201
 202         if(na->last_successfull_connection == 0 || na->last_successfull_connection > nb->last_successfull_connection) {
 203                 return -1;
 204         }
 205
 206         if(nb->last_successfull_connection == 0 || na->last_successfull_connection < nb->last_successfull_connection) {
 207                 return 1;
 208         }
 209
 210         if(na < nb) {
 211                 return -1;
 212         }
 213
 214         if(na > nb) {
 215                 return 1;
 216         }
 217
 218         return 0;
 219 }
 220
 221 // devclass desc
 222 static int node_compare_devclass_desc(const void *a, const void *b) {
 223         const node_t *na = a, *nb = b;
 224
 225         if(na->devclass < nb->devclass) {
 226                 return -1;
 227         }
 228
 229         if(na->devclass > nb->devclass) {
 230                 return 1;
 231         }
 232
 233         if(na < nb) {
 234                 return -1;
 235         }
 236
 237         if(na > nb) {
 238                 return 1;
 239         }
 240
 241         return 0;
 242 }
 243
 244
 245 /*
 246
 247 autoconnect()
 248 {
 249         timeout = 5
 250
 251         // find the best one for initial connect
 252
 253         if cur < min
 254                 newcon =
 255                         first from nodes
 256                                 where dclass <= my.dclass and !connection and (timestamp - last_retry) > retry_timeout
 257                                 order by dclass asc, last_connection desc
 258                 if newcon
 259                         timeout = 0
 260                         goto connect
 261
 262
 263         // find better nodes to connect to: in case we have less than min connections within [BACKBONE, i] and there are nodes which we are not connected to within the range
 264
 265         if min <= cur < max
 266                 j = 0
 267                 for i = BACKBONE to my.dclass
 268                         j += count(from connections where node.dclass = i)
 269                         if j < min
 270                                 newcon =
 271                                         first from nodes
 272                                                 where dclass = i and !connection and (timestamp - last_retry) > retry_timeout
 273                                                 order by last_connection desc
 274                                 if newcon
 275                                         goto connect
 276                         else
 277                                 break
 278
 279
 280         // heal partitions
 281
 282         if min <= cur < max
 283                 newcon =
 284                         first from nodes
 285                                 where dclass <= my.dclass and !reachable and (timestamp - last_retry) > retry_timeout
 286                                 order by dclass asc, last_connection desc
 287                 if newcon
 288                         goto connect
 289
 290
 291         // connect
 292
 293 connect:
 294         if newcon
 295                 connect newcon
 296
 297
 298         // disconnect outgoing connections in case we have more than min connections within [BACKBONE, i] and there are nodes which we are connected to within the range [i, PORTABLE]
 299
 300         if min < cur <= max
 301                 j = 0
 302                 for i = BACKBONE to my.dclass
 303                         j += count(from connections where node.dclass = i)
 304                         if min < j
 305                                 delcon =
 306                                         first from nodes
 307                                                 where dclass >= i and outgoing_connection
 308                                                 order by dclass desc
 309                                 if disconnect
 310                                         goto disconnect
 311                                 else
 312                                         break
 313
 314
 315         // disconnect connections in case we have more than enough connections
 316
 317         if max < cur
 318                 delcon =
 319                         first from nodes
 320                                 where outgoing_connection
 321                                 order by dclass desc
 322                 goto disconnect
 323
 324         // disconnect
 325
 326 disconnect
 327         if delcon
 328                 disconnect delcon
 329
 330
 331         // next iteration
 332         next (timeout, autoconnect)
 333
 334 }
 335
 336 */
 337
 338
 339 static void periodic_handler(event_loop_t *loop, void *data) {
 340         meshlink_handle_t *mesh = loop->data;
 341
 342         /* Check if there are too many contradicting ADD_EDGE and DEL_EDGE messages.
 343            This usually only happens when another node has the same Name as this node.
 344            If so, sleep for a short while to prevent a storm of contradicting messages.
 345         */
 346
 347         if(mesh->contradicting_del_edge > 100 && mesh->contradicting_add_edge > 100) {
 348                 logger(mesh, MESHLINK_WARNING, "Possible node with same Name as us! Sleeping %d seconds.", mesh->sleeptime);
 349                 usleep(mesh->sleeptime * 1000000LL);
 350                 mesh->sleeptime *= 2;
 351
 352                 if(mesh->sleeptime < 0) {
 353                         mesh->sleeptime = 3600;
 354                 }
 355         } else {
 356                 mesh->sleeptime /= 2;
 357
 358                 if(mesh->sleeptime < 10) {
 359                         mesh->sleeptime = 10;
 360                 }
 361         }
 362
 363         mesh->contradicting_add_edge = 0;
 364         mesh->contradicting_del_edge = 0;
 365
 366         int timeout = default_timeout;
 367
 368         /* Check if we need to make or break connections. */
 369
 370         if(mesh->nodes->count > 1) {
 371
 372                 logger(mesh, MESHLINK_DEBUG, "--- autoconnect begin ---");
 373
 374                 int retry_timeout = min(mesh->nodes->count * default_timeout, 60);
 375
 376                 logger(mesh, MESHLINK_DEBUG, "* devclass = %d", mesh->devclass);
 377                 logger(mesh, MESHLINK_DEBUG, "* nodes = %d", mesh->nodes->count);
 378                 logger(mesh, MESHLINK_DEBUG, "* retry_timeout = %d", retry_timeout);
 379
 380
 381                 // connect disconnect nodes
 382
 383                 node_t *connect_to = NULL;
 384                 node_t *disconnect_from = NULL;
 385
 386
 387                 // get cur_connects
 388
 389                 unsigned int cur_connects = 0;
 390
 391                 for list_each(connection_t, c, mesh->connections) {
 392                         if(c->status.active) {
 393                                 cur_connects += 1;
 394                         }
 395                 }
 396
 397                 logger(mesh, MESHLINK_DEBUG, "* cur_connects = %d", cur_connects);
 398                 logger(mesh, MESHLINK_DEBUG, "* outgoings = %d", mesh->outgoings->count);
 399
 400                 // get min_connects and max_connects
 401
 402                 unsigned int min_connects = mesh->dev_class_traits[mesh->devclass].min_connects;
 403                 unsigned int max_connects = mesh->dev_class_traits[mesh->devclass].max_connects;
 404
 405                 logger(mesh, MESHLINK_DEBUG, "* min_connects = %d", min_connects);
 406                 logger(mesh, MESHLINK_DEBUG, "* max_connects = %d", max_connects);
 407
 408                 // find the best one for initial connect
 409
 410                 if(cur_connects < min_connects) {
 411                         splay_tree_t *nodes = splay_alloc_tree(node_compare_devclass_asc_lsc_desc, NULL);
 412
 413                         for splay_each(node_t, n, mesh->nodes) {
 414                                 logger(mesh, MESHLINK_DEBUG, "* %s->devclass = %d", n->name, n->devclass);
 415
 416                                 if(n != mesh->self && n->devclass <= mesh->devclass && !n->connection && !n->status.blacklisted && (n->last_connect_try == 0 || (mesh->loop.now.tv_sec - n->last_connect_try) > retry_timeout)) {
 417                                         splay_insert(nodes, n);
 418                                 }
 419                         }
 420
 421                         if(nodes->head) {
 422                                 //timeout = 0;
 423                                 connect_to = (node_t *)nodes->head->data;
 424
 425                                 logger(mesh, MESHLINK_DEBUG, "* found best one for initial connect: %s", connect_to->name);
 426                         } else {
 427                                 logger(mesh, MESHLINK_DEBUG, "* could not find node for initial connect");
 428                         }
 429
 430                         splay_delete_tree(nodes);
 431                 }
 432
 433
 434                 // find better nodes to connect to
 435
 436                 if(!connect_to && min_connects <= cur_connects && cur_connects < max_connects) {
 437                         unsigned int connects = 0;
 438
 439                         for(dev_class_t devclass = 0; devclass <= mesh->devclass; ++devclass) {
 440                                 for list_each(connection_t, c, mesh->connections) {
 441                                         if(c->status.active && c->node && c->node->devclass == devclass) {
 442                                                 connects += 1;
 443                                         }
 444                                 }
 445
 446                                 if(connects < min_connects) {
 447                                         splay_tree_t *nodes = splay_alloc_tree(node_compare_lsc_desc, NULL);
 448
 449                                         for splay_each(node_t, n, mesh->nodes) {
 450                                                 if(n != mesh->self && n->devclass == devclass && !n->connection && !n->status.blacklisted && (n->last_connect_try == 0 || (mesh->loop.now.tv_sec - n->last_connect_try) > retry_timeout)) {
 451                                                         splay_insert(nodes, n);
 452                                                 }
 453                                         }
 454
 455                                         if(nodes->head) {
 456                                                 logger(mesh, MESHLINK_DEBUG, "* found better node");
 457                                                 connect_to = (node_t *)nodes->head->data;
 458
 459                                                 splay_delete_tree(nodes);
 460                                                 break;
 461                                         }
 462
 463                                         splay_delete_tree(nodes);
 464                                 } else {
 465                                         break;
 466                                 }
 467                         }
 468
 469                         if(!connect_to) {
 470                                 logger(mesh, MESHLINK_DEBUG, "* could not find better nodes");
 471                         }
 472                 }
 473
 474
 475                 // heal partitions
 476
 477                 if(!connect_to && min_connects <= cur_connects && cur_connects < max_connects) {
 478                         splay_tree_t *nodes = splay_alloc_tree(node_compare_devclass_asc_lsc_desc, NULL);
 479
 480                         for splay_each(node_t, n, mesh->nodes) {
 481                                 if(n != mesh->self && n->devclass <= mesh->devclass && !n->status.reachable && !n->status.blacklisted && (n->last_connect_try == 0 || (mesh->loop.now.tv_sec - n->last_connect_try) > retry_timeout)) {
 482                                         splay_insert(nodes, n);
 483                                 }
 484                         }
 485
 486                         if(nodes->head) {
 487                                 logger(mesh, MESHLINK_DEBUG, "* try to heal partition");
 488                                 connect_to = (node_t *)nodes->head->data;
 489                         } else {
 490                                 logger(mesh, MESHLINK_DEBUG, "* could not find nodes for partition healing");
 491                         }
 492
 493                         splay_delete_tree(nodes);
 494                 }
 495
 496
 497                 // perform connect
 498
 499                 if(connect_to && !connect_to->connection) {
 500                         connect_to->last_connect_try = mesh->loop.now.tv_sec;
 501                         logger(mesh, MESHLINK_DEBUG, "Autoconnect trying to connect to %s", connect_to->name);
 502
 503                         /* check if there is already a connection attempt to this node */
 504                         bool skip = false;
 505
 506                         for list_each(outgoing_t, outgoing, mesh->outgoings) {
 507                                 if(outgoing->node == connect_to) {
 508                                         logger(mesh, MESHLINK_DEBUG, "* skip autoconnect since it is an outgoing connection already");
 509                                         skip = true;
 510                                         break;
 511                                 }
 512                         }
 513
 514                         if(!connect_to->status.reachable && !node_read_public_key(mesh, connect_to)) {
 515                                 logger(mesh, MESHLINK_DEBUG, "* skip autoconnect since we don't know this node's public key");
 516                                 skip = true;
 517                         }
 518
 519                         if(!skip) {
 520                                 logger(mesh, MESHLINK_DEBUG, "Autoconnecting to %s", connect_to->name);
 521                                 outgoing_t *outgoing = xzalloc(sizeof(outgoing_t));
 522                                 outgoing->node = connect_to;
 523                                 list_insert_tail(mesh->outgoings, outgoing);
 524                                 setup_outgoing_connection(mesh, outgoing);
 525                         }
 526                 }
 527
 528
 529                 // disconnect suboptimal outgoing connections
 530
 531                 if(min_connects < cur_connects /*&& cur_connects <= max_connects*/) {
 532                         unsigned int connects = 0;
 533
 534                         for(dev_class_t devclass = 0; devclass <= mesh->devclass; ++devclass) {
 535                                 for list_each(connection_t, c, mesh->connections) {
 536                                         if(c->status.active && c->node && c->node->devclass == devclass) {
 537                                                 connects += 1;
 538                                         }
 539                                 }
 540
 541                                 if(min_connects < connects) {
 542                                         splay_tree_t *nodes = splay_alloc_tree(node_compare_devclass_desc, NULL);
 543
 544                                         for list_each(connection_t, c, mesh->connections) {
 545                                                 if(c->outgoing && c->node && c->node->devclass >= devclass) {
 546                                                         splay_insert(nodes, c->node);
 547                                                 }
 548                                         }
 549
 550                                         if(nodes->head) {
 551                                                 logger(mesh, MESHLINK_DEBUG, "* disconnect suboptimal outgoing connection");
 552                                                 disconnect_from = (node_t *)nodes->head->data;
 553                                         }
 554
 555                                         splay_delete_tree(nodes);
 556                                         break;
 557                                 }
 558                         }
 559
 560                         if(!disconnect_from) {
 561                                 logger(mesh, MESHLINK_DEBUG, "* no suboptimal outgoing connections");
 562                         }
 563                 }
 564
 565
 566                 // disconnect connections (too many connections)
 567
 568                 if(!disconnect_from && max_connects < cur_connects) {
 569                         splay_tree_t *nodes = splay_alloc_tree(node_compare_devclass_desc, NULL);
 570
 571                         for list_each(connection_t, c, mesh->connections) {
 572                                 if(c->status.active && c->node) {
 573                                         splay_insert(nodes, c->node);
 574                                 }
 575                         }
 576
 577                         if(nodes->head) {
 578                                 logger(mesh, MESHLINK_DEBUG, "* disconnect connection (too many connections)");
 579
 580                                 //timeout = 0;
 581                                 disconnect_from = (node_t *)nodes->head->data;
 582                         } else {
 583                                 logger(mesh, MESHLINK_DEBUG, "* no node we want to disconnect, even though we have too many connections");
 584                         }
 585
 586                         splay_delete_tree(nodes);
 587                 }
 588
 589
 590                 // perform disconnect
 591
 592                 if(disconnect_from && disconnect_from->connection) {
 593                         logger(mesh, MESHLINK_DEBUG, "Autodisconnecting from %s", disconnect_from->connection->name);
 594                         list_delete(mesh->outgoings, disconnect_from->connection->outgoing);
 595                         disconnect_from->connection->outgoing = NULL;
 596                         terminate_connection(mesh, disconnect_from->connection, disconnect_from->connection->status.active);
 597                 }
 598
 599                 // reduce timeout if we don't have enough connections + outgoings
 600                 if(cur_connects + mesh->outgoings->count < 3) {
 601                         timeout = 1;
 602                 }
 603
 604                 // done!
 605
 606                 logger(mesh, MESHLINK_DEBUG, "--- autoconnect end ---");
 607         }
 608
 609         for splay_each(node_t, n, mesh->nodes) {
 610                 if(n->status.dirty) {
 611                         if(node_write_config(mesh, n)) {
 612                                 logger(mesh, MESHLINK_DEBUG, "Could not update %s", n->name);
 613                         }
 614
 615                         n->status.dirty = false;
 616                 }
 617         }
 618
 619         timeout_set(&mesh->loop, data, &(struct timeval) {
 620                 timeout, prng(mesh, TIMER_FUDGE)
 621         });
 622 }
 623
 624 void handle_meta_connection_data(meshlink_handle_t *mesh, connection_t *c) {
 625         if(!receive_meta(mesh, c)) {
 626                 terminate_connection(mesh, c, c->status.active);
 627                 return;
 628         }
 629 }
 630
 631 void retry(meshlink_handle_t *mesh) {
 632         /* Reset the reconnection timers for all outgoing connections */
 633         for list_each(outgoing_t, outgoing, mesh->outgoings) {
 634                 outgoing->timeout = 0;
 635
 636                 if(outgoing->ev.cb)
 637                         timeout_set(&mesh->loop, &outgoing->ev, &(struct timeval) {
 638                         0, 0
 639                 });
 640         }
 641
 642 #ifdef HAVE_IFADDRS_H
 643         struct ifaddrs *ifa = NULL;
 644         getifaddrs(&ifa);
 645 #endif
 646
 647         /* For active connections, check if their addresses are still valid.
 648          * If yes, reset their ping timers, otherwise terminate them. */
 649         for list_each(connection_t, c, mesh->connections) {
 650                 if(!c->status.active) {
 651                         continue;
 652                 }
 653
 654                 if(!c->status.pinged) {
 655                         c->last_ping_time = 0;
 656                 }
 657
 658 #ifdef HAVE_IFADDRS_H
 659
 660                 if(!ifa) {
 661                         continue;
 662                 }
 663
 664                 sockaddr_t sa;
 665                 socklen_t salen = sizeof(sa);
 666
 667                 if(getsockname(c->socket, &sa.sa, &salen)) {
 668                         continue;
 669                 }
 670
 671                 bool found = false;
 672
 673                 for(struct ifaddrs *ifap = ifa; ifap; ifap = ifap->ifa_next) {
 674                         if(ifap->ifa_addr && !sockaddrcmp_noport(&sa, (sockaddr_t *)ifap->ifa_addr)) {
 675                                 found = true;
 676                                 break;
 677                         }
 678
 679                 }
 680
 681                 if(!found) {
 682                         logger(mesh, MESHLINK_DEBUG, "Local address for connection to %s no longer valid, terminating", c->name);
 683                         terminate_connection(mesh, c, c->status.active);
 684                 }
 685
 686 #endif
 687         }
 688
 689 #ifdef HAVE_IFADDRS_H
 690
 691         if(ifa) {
 692                 freeifaddrs(ifa);
 693         }
 694
 695 #endif
 696
 697         /* Kick the ping timeout handler */
 698         timeout_set(&mesh->loop, &mesh->pingtimer, &(struct timeval) {
 699                 0, 0
 700         });
 701 }
 702
 703 /*
 704   this is where it all happens...
 705 */
 706 void main_loop(meshlink_handle_t *mesh) {
 707         timeout_add(&mesh->loop, &mesh->pingtimer, timeout_handler, &mesh->pingtimer, &(struct timeval) {
 708                 1, prng(mesh, TIMER_FUDGE)
 709         });
 710         timeout_add(&mesh->loop, &mesh->periodictimer, periodic_handler, &mesh->periodictimer, &(struct timeval) {
 711                 0, 0
 712         });
 713
 714         //Add signal handler
 715         mesh->datafromapp.signum = 0;
 716         signal_add(&mesh->loop, &mesh->datafromapp, meshlink_send_from_queue, mesh, mesh->datafromapp.signum);
 717
 718         if(!event_loop_run(&mesh->loop, &mesh->mutex)) {
 719                 logger(mesh, MESHLINK_ERROR, "Error while waiting for input: %s", strerror(errno));
 720                 call_error_cb(mesh, MESHLINK_ENETWORK);
 721         }
 722
 723         signal_del(&mesh->loop, &mesh->datafromapp);
 724         timeout_del(&mesh->loop, &mesh->periodictimer);
 725         timeout_del(&mesh->loop, &mesh->pingtimer);
 726 }