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Comparing gvpe/src/vpn.C (file contents):
Revision 1.8 by pcg, Mon Apr 7 01:28:56 2003 UTC vs.
Revision 1.15 by pcg, Tue Oct 14 15:48:15 2003 UTC

… …
26 26
27#include <sys/types.h> 27#include <sys/types.h>
28#include <sys/socket.h> 28#include <sys/socket.h>
29#include <sys/poll.h> 29#include <sys/poll.h>
30#include <sys/wait.h> 30#include <sys/wait.h>
31#include <netinet/in.h>
32#include <arpa/inet.h>
33#include <errno.h> 31#include <errno.h>
34#include <time.h> 32#include <time.h>
35#include <unistd.h> 33#include <unistd.h>
34#include <fcntl.h>
35#include <sys/socket.h>
36
37#include "netcompat.h"
36 38
37#include "pidfile.h" 39#include "pidfile.h"
38 40
39#include "connection.h" 41#include "connection.h"
40#include "util.h" 42#include "util.h"
… …
80 ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); 82 ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto);
81 83
82 if (ipv4_fd < 0) 84 if (ipv4_fd < 0)
83 return -1; 85 return -1;
84 86
85 sockinfo si (THISNODE, PROT_IPv4); 87 fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
86 88
87 if (bind (ipv4_fd, si.sav4 (), si.salenv4 ())) 89#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
88 {
89 slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));
90 exit (1);
91 }
92
93#ifdef IP_MTU_DISCOVER
94 // this I really consider a linux bug. I am neither connected 90 // this I really consider a linux bug. I am neither connected
95 // nor do I fragment myself. Linux still sets DF and doesn't 91 // nor do I fragment myself. Linux still sets DF and doesn't
96 // fragment for me sometimes. 92 // fragment for me sometimes.
97 { 93 {
98 int oval = IP_PMTUDISC_DONT; 94 int oval = IP_PMTUDISC_DONT;
99 setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); 95 setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
100 } 96 }
101#endif 97#endif
102 98
99 sockinfo si (THISNODE, PROT_IPv4);
100
101 if (bind (ipv4_fd, si.sav4 (), si.salenv4 ()))
102 {
103 slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno));
104 exit (1);
105 }
106
103 ipv4_ev_watcher.start (ipv4_fd, POLLIN); 107 ipv4_ev_watcher.start (ipv4_fd, POLLIN);
104 } 108 }
105 109
106 udpv4_fd = -1; 110 udpv4_fd = -1;
107 111
… …
109 { 113 {
110 udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); 114 udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
111 115
112 if (udpv4_fd < 0) 116 if (udpv4_fd < 0)
113 return -1; 117 return -1;
118
119 fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
114 120
115 // standard daemon practise... 121 // standard daemon practise...
116 { 122 {
117 int oval = 1; 123 int oval = 1;
118 setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); 124 setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
119 } 125 }
120 126
121 sockinfo si (THISNODE, PROT_UDPv4); 127#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
122
123 if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
124 {
125 slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));
126 exit (1);
127 }
128
129#ifdef IP_MTU_DISCOVER
130 // this I really consider a linux bug. I am neither connected 128 // this I really consider a linux bug. I am neither connected
131 // nor do I fragment myself. Linux still sets DF and doesn't 129 // nor do I fragment myself. Linux still sets DF and doesn't
132 // fragment for me sometimes. 130 // fragment for me sometimes.
133 { 131 {
134 int oval = IP_PMTUDISC_DONT; 132 int oval = IP_PMTUDISC_DONT;
135 setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); 133 setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
136 } 134 }
137#endif 135#endif
138 136
137 sockinfo si (THISNODE, PROT_UDPv4);
138
139 if (bind (udpv4_fd, si.sav4 (), si.salenv4 ()))
140 {
141 slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno));
142 exit (1);
143 }
144
139 udpv4_ev_watcher.start (udpv4_fd, POLLIN); 145 udpv4_ev_watcher.start (udpv4_fd, POLLIN);
140 } 146 }
147
148 icmpv4_fd = -1;
149
150#if ENABLE_ICMP
151 if (THISNODE->protocols & PROT_ICMPv4)
152 {
153 icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP);
154
155 if (icmpv4_fd < 0)
156 return -1;
157
158 fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
159
160#ifdef ICMP_FILTER
161 {
162 icmp_filter oval;
163 oval.data = 0xffffffff;
164 if (::conf.icmp_type < 32)
165 oval.data &= ~(1 << ::conf.icmp_type);
166
167 setsockopt (icmpv4_fd, SOL_RAW, ICMP_FILTER, &oval, sizeof oval);
168 }
169#endif
170
171#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
172 // this I really consider a linux bug. I am neither connected
173 // nor do I fragment myself. Linux still sets DF and doesn't
174 // fragment for me sometimes.
175 {
176 int oval = IP_PMTUDISC_DONT;
177 setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
178 }
179#endif
180
181 sockinfo si (THISNODE, PROT_ICMPv4);
182
183 if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ()))
184 {
185 slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno));
186 exit (1);
187 }
188
189 icmpv4_ev_watcher.start (icmpv4_fd, POLLIN);
190 }
191#endif
141 192
142 tcpv4_fd = -1; 193 tcpv4_fd = -1;
143 194
144#if ENABLE_TCP 195#if ENABLE_TCP
145 if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port) 196 if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port)
146 { 197 {
147 tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); 198 tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
148 199
149 if (tcpv4_fd < 0) 200 if (tcpv4_fd < 0)
150 return -1; 201 return -1;
202
203 fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
151 204
152 // standard daemon practise... 205 // standard daemon practise...
153 { 206 {
154 int oval = 1; 207 int oval = 1;
155 setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); 208 setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
… …
204#if ENABLE_TCP 257#if ENABLE_TCP
205 case PROT_TCPv4: 258 case PROT_TCPv4:
206 return send_tcpv4_packet (pkt, si, tos); 259 return send_tcpv4_packet (pkt, si, tos);
207#endif 260#endif
208 261
262#if ENABLE_ICMP
263 case PROT_ICMPv4:
264 return send_icmpv4_packet (pkt, si, tos);
265#endif
266
209 default: 267 default:
210 slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); 268 slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
211 return false; 269 return false;
212 } 270 }
213} 271}
214 272
215bool 273bool
216vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) 274vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
217{ 275{
276#if defined(SOL_IP) && defined(IP_TOS)
218 setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); 277 setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
278#endif
219 sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); 279 sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
220 280
221 return true; 281 return true;
222} 282}
283
284static u16
285ipv4_checksum (u16 *data, unsigned int len)
286{
287 // use 32 bit accumulator and fold back carry bits at the end
288 u32 sum = 0;
289
290 while (len > 1)
291 {
292 sum += *data++;
293 len -= 2;
294 }
295
296 // odd byte left?
297 if (len)
298 sum += *(u8 *)data;
299
300 // add back carry bits
301 sum = (sum >> 16) + (sum & 0xffff); // lo += hi
302 sum += (sum >> 16); // carry
303
304 return ~sum;
305}
306
307#if ENABLE_ICMP
308bool
309vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
310{
311#if defined(SOL_IP) && defined(IP_TOS)
312 setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
313#endif
314
315 pkt->unshift_hdr (4);
316
317 icmp_header *hdr = (icmp_header *)&((*pkt)[0]);
318 hdr->type = ::conf.icmp_type;
319 hdr->code = 255;
320 hdr->checksum = 0;
321 hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len);
322
323 sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
324
325 return true;
326}
327#endif
223 328
224bool 329bool
225vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) 330vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos)
226{ 331{
332#if defined(SOL_IP) && defined(IP_TOS)
227 setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); 333 setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos);
334#endif
228 sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); 335 sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ());
229 336
230 return true; 337 return true;
231} 338}
232 339
… …
249 (const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ()); 356 (const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ());
250 else 357 else
251 { 358 {
252 connection *c = conns[src - 1]; 359 connection *c = conns[src - 1];
253 360
254 if (dst == 0 && !THISNODE->routerprio) 361 if (dst == 0)
255 slog (L_WARN, _("%s(%s): received broadcast, but we are no router"), 362 slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"),
256 c->conf->nodename, (const char *)rsi); 363 c->conf->nodename, (const char *)rsi);
257 else if (dst != 0 && dst != THISNODE->id) 364 else if (dst != 0 && dst != THISNODE->id)
258 { 365 {
259 if (THISNODE->routerprio) 366 if (THISNODE->routerprio)
260 // the tos setting gets lost here. who cares. 367 // the tos setting gets lost here. who cares.
… …
269 c->recv_vpn_packet (pkt, rsi); 376 c->recv_vpn_packet (pkt, rsi);
270 } 377 }
271} 378}
272 379
273void 380void
274vpn::udpv4_ev (io_watcher &w, short revents) 381vpn::ipv4_ev (io_watcher &w, short revents)
275{ 382{
276 if (revents & (POLLIN | POLLERR)) 383 if (revents & (POLLIN | POLLERR))
277 { 384 {
278 vpn_packet *pkt = new vpn_packet; 385 vpn_packet *pkt = new vpn_packet;
279 struct sockaddr_in sa; 386 struct sockaddr_in sa;
280 socklen_t sa_len = sizeof (sa); 387 socklen_t sa_len = sizeof (sa);
281 int len; 388 int len;
282 389
283 len = recvfrom (w.fd, &((*pkt)[0]), MAXSIZE, 0, (sockaddr *)&sa, &sa_len); 390 len = recvfrom (w.fd, &((*pkt)[0]), MAXSIZE, 0, (sockaddr *)&sa, &sa_len);
284 391
285 sockinfo si(sa, PROT_UDPv4); 392 sockinfo si(sa, PROT_IPv4);
286 393
287 if (len > 0) 394 if (len > 0)
288 { 395 {
289 pkt->len = len; 396 pkt->len = len;
290 397
398 // raw sockets deliver the ipv4, but don't expect it on sends
399 // this is slow, but...
400 pkt->skip_hdr (IP_OVERHEAD);
401
291 recv_vpn_packet (pkt, si); 402 recv_vpn_packet (pkt, si);
292 } 403 }
293 else 404 else
294 { 405 {
295 // probably ECONNRESET or somesuch 406 // probably ECONNRESET or somesuch
296 slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno)); 407 slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));
297 } 408 }
298 409
299 delete pkt; 410 delete pkt;
300 } 411 }
301 else if (revents & POLLHUP) 412 else if (revents & POLLHUP)
302 { 413 {
303 // this cannot ;) happen on udp sockets 414 // this cannot ;) happen on udp sockets
304 slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating.")); 415 slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating."));
305 exit (1); 416 exit (1);
306 } 417 }
307 else 418 else
308 { 419 {
309 slog (L_ERR, 420 slog (L_ERR,
… …
311 revents); 422 revents);
312 exit (1); 423 exit (1);
313 } 424 }
314} 425}
315 426
427#if ENABLE_ICMP
316void 428void
317vpn::ipv4_ev (io_watcher &w, short revents) 429vpn::icmpv4_ev (io_watcher &w, short revents)
318{ 430{
319 if (revents & (POLLIN | POLLERR)) 431 if (revents & (POLLIN | POLLERR))
320 { 432 {
321 vpn_packet *pkt = new vpn_packet; 433 vpn_packet *pkt = new vpn_packet;
322 struct sockaddr_in sa; 434 struct sockaddr_in sa;
323 socklen_t sa_len = sizeof (sa); 435 socklen_t sa_len = sizeof (sa);
324 int len; 436 int len;
325 437
326 len = recvfrom (w.fd, &((*pkt)[0]), MAXSIZE, 0, (sockaddr *)&sa, &sa_len); 438 len = recvfrom (w.fd, &((*pkt)[0]), MAXSIZE, 0, (sockaddr *)&sa, &sa_len);
327 439
328 sockinfo si(sa, PROT_IPv4); 440 sockinfo si(sa, PROT_ICMPv4);
329 441
330 if (len > 0) 442 if (len > 0)
331 { 443 {
332 pkt->len = len; 444 pkt->len = len;
333 445
446 icmp_header *hdr = (icmp_header *)&((*pkt)[IP_OVERHEAD]);
447
448 if (hdr->type == ::conf.icmp_type
449 && hdr->code == 255)
450 {
334 // raw sockets deliver the ipv4, but don't expect it on sends 451 // raw sockets deliver the ipv4, but don't expect it on sends
335 // this is slow, but... 452 // this is slow, but...
336 pkt->skip_hdr (IP_OVERHEAD); 453 pkt->skip_hdr (ICMP_OVERHEAD);
337 454
338 recv_vpn_packet (pkt, si); 455 recv_vpn_packet (pkt, si);
456 }
339 } 457 }
340 else 458 else
341 { 459 {
342 // probably ECONNRESET or somesuch 460 // probably ECONNRESET or somesuch
343 slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno)); 461 slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno));
… …
346 delete pkt; 464 delete pkt;
347 } 465 }
348 else if (revents & POLLHUP) 466 else if (revents & POLLHUP)
349 { 467 {
350 // this cannot ;) happen on udp sockets 468 // this cannot ;) happen on udp sockets
351 slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating.")); 469 slog (L_ERR, _("FATAL: POLLHUP on icmpv4 fd, terminating."));
352 exit (1); 470 exit (1);
353 } 471 }
354 else 472 else
355 { 473 {
356 slog (L_ERR, 474 slog (L_ERR,
357 _("FATAL: unknown revents %08x in socket, terminating\n"), 475 _("FATAL: unknown revents %08x in socket, terminating\n"),
358 revents); 476 revents);
359 exit (1); 477 exit (1);
360 } 478 }
361} 479}
480#endif
481
482void
483vpn::udpv4_ev (io_watcher &w, short revents)
484{
485 if (revents & (POLLIN | POLLERR))
486 {
487 vpn_packet *pkt = new vpn_packet;
488 struct sockaddr_in sa;
489 socklen_t sa_len = sizeof (sa);
490 int len;
491
492 len = recvfrom (w.fd, &((*pkt)[0]), MAXSIZE, 0, (sockaddr *)&sa, &sa_len);
493
494 sockinfo si(sa, PROT_UDPv4);
495
496 if (len > 0)
497 {
498 pkt->len = len;
499
500 recv_vpn_packet (pkt, si);
501 }
502 else
503 {
504 // probably ECONNRESET or somesuch
505 slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno));
506 }
507
508 delete pkt;
509 }
510 else if (revents & POLLHUP)
511 {
512 // this cannot ;) happen on udp sockets
513 slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating."));
514 exit (1);
515 }
516 else
517 {
518 slog (L_ERR,
519 _("FATAL: unknown revents %08x in socket, terminating\n"),
520 revents);
521 exit (1);
522 }
523}
362 524
363void 525void
364vpn::tap_ev (io_watcher &w, short revents) 526vpn::tap_ev (io_watcher &w, short revents)
365{ 527{
366 if (revents & POLLIN) 528 if (revents & POLLIN)
… …
373 int dst = mac2id (pkt->dst); 535 int dst = mac2id (pkt->dst);
374 int src = mac2id (pkt->src); 536 int src = mac2id (pkt->src);
375 537
376 if (src != THISNODE->id) 538 if (src != THISNODE->id)
377 { 539 {
378 slog (L_ERR, _("FATAL: tap packet not originating on current node received, terminating.")); 540 slog (L_ERR, _("FATAL: tap packet not originating on current node received, exiting."));
379 exit (1); 541 exit (1);
380 } 542 }
381 543
382 if (dst == THISNODE->id) 544 if (dst == THISNODE->id)
383 { 545 {
384 slog (L_ERR, _("FATAL: tap packet destined for current node received, terminating.")); 546 slog (L_ERR, _("FATAL: tap packet destined for current node received, exiting."));
385 exit (1); 547 exit (1);
386 } 548 }
387 549
388 if (dst > conns.size ()) 550 if (dst > conns.size ())
389 slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst); 551 slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst);
… …
395 if (dst != THISNODE->id) 557 if (dst != THISNODE->id)
396 conns[dst - 1]->inject_data_packet (pkt); 558 conns[dst - 1]->inject_data_packet (pkt);
397 } 559 }
398 else 560 else
399 { 561 {
400 // broadcast, first check router, then self, then english 562 // broadcast, this is ugly, but due to the security policy
401 connection *router = find_router (); 563 // we have to connect to all hosts...
402
403 if (router)
404 router->inject_data_packet (pkt, true);
405 else
406 for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) 564 for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
407 if ((*c)->conf != THISNODE) 565 if ((*c)->conf != THISNODE)
408 (*c)->inject_data_packet (pkt); 566 (*c)->inject_data_packet (pkt);
409 } 567 }
410 } 568 }
411 569
412 delete pkt; 570 delete pkt;
413 } 571 }
… …
480 } 638 }
481} 639}
482 640
483connection *vpn::find_router () 641connection *vpn::find_router ()
484{ 642{
485 u32 prio = 0; 643 u32 prio = 1;
486 connection *router = 0; 644 connection *router = 0;
487 645
488 for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) 646 for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
489 { 647 {
490 connection *c = *i; 648 connection *c = *i;
491 649
492 if (c->conf->routerprio > prio 650 if (c->conf->routerprio > prio
493 && c->connectmode == conf_node::C_ALWAYS 651 && c->connectmode == conf_node::C_ALWAYS // so we don't drop the connection if in use
494 && c->conf != THISNODE
495 && c->ictx && c->octx) 652 && c->ictx && c->octx
653 && c->conf != THISNODE) // redundant, since ictx==octx==0 always on thisnode
496 { 654 {
497 prio = c->conf->routerprio; 655 prio = c->conf->routerprio;
498 router = c; 656 router = c;
499 } 657 }
500 } 658 }
… …
509 if (c) 667 if (c)
510 c->send_connect_request (id); 668 c->send_connect_request (id);
511 else 669 else
512 // no router found, aggressively connect to all routers 670 // no router found, aggressively connect to all routers
513 for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) 671 for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i)
514 if ((*i)->conf->routerprio) 672 if ((*i)->conf->routerprio && (*i)->conf != THISNODE)
515 (*i)->establish_connection (); 673 (*i)->establish_connection ();
516} 674}
517 675
518void 676void
519connection::dump_status () 677connection::dump_status ()
… …
537 695
538 slog (L_NOTICE, _("END status dump")); 696 slog (L_NOTICE, _("END status dump"));
539} 697}
540 698
541vpn::vpn (void) 699vpn::vpn (void)
542: event(this, &vpn::event_cb) 700: event (this, &vpn::event_cb)
543, udpv4_ev_watcher(this, &vpn::udpv4_ev) 701, udpv4_ev_watcher (this, &vpn::udpv4_ev)
544, ipv4_ev_watcher (this, &vpn::ipv4_ev) 702, ipv4_ev_watcher (this, &vpn::ipv4_ev)
545, tap_ev_watcher (this, &vpn::tap_ev)
546#if ENABLE_TCP 703#if ENABLE_TCP
547, tcpv4_ev_watcher(this, &vpn::tcpv4_ev) 704, tcpv4_ev_watcher (this, &vpn::tcpv4_ev)
548#endif 705#endif
706#if ENABLE_ICMP
707, icmpv4_ev_watcher(this, &vpn::icmpv4_ev)
708#endif
709, tap_ev_watcher (this, &vpn::tap_ev)
549{ 710{
550} 711}
551 712
552vpn::~vpn () 713vpn::~vpn ()
553{ 714{

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