/*
protocol_key.c -- handle the meta-protocol, key exchange
Copyright (C) 1999-2005 Ivo Timmermans,
- 2000-2009 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2014 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "system.h"
-#include <openssl/evp.h>
-#include <openssl/err.h>
-#include <openssl/rand.h>
-
-#include "avl_tree.h"
+#include "cipher.h"
#include "connection.h"
+#include "crypto.h"
#include "logger.h"
#include "net.h"
#include "netutl.h"
#include "node.h"
+#include "prf.h"
#include "protocol.h"
+#include "sptps.h"
#include "utils.h"
#include "xalloc.h"
-bool mykeyused = false;
+static bool mykeyused = false;
-bool send_key_changed() {
- /* Only send this message if some other daemon requested our key previously.
- This reduces unnecessary key_changed broadcasts.
- */
+void send_key_changed(void) {
+#ifndef DISABLE_LEGACY
+ send_request(everyone, "%d %x %s", KEY_CHANGED, rand(), myself->name);
- if(!mykeyused)
- return true;
+ /* Immediately send new keys to directly connected nodes to keep UDP mappings alive */
+
+ for list_each(connection_t, c, connection_list)
+ if(c->edge && c->node && c->node->status.reachable && !c->node->status.sptps)
+ send_ans_key(c->node);
+#endif
- return send_request(broadcast, "%d %x %s", KEY_CHANGED, rand(), myself->name);
+ /* Force key exchange for connections using SPTPS */
+
+ if(experimental) {
+ for splay_each(node_t, n, node_tree)
+ if(n->status.reachable && n->status.validkey && n->status.sptps)
+ sptps_force_kex(&n->sptps);
+ }
}
-bool key_changed_h(connection_t *c) {
+bool key_changed_h(connection_t *c, const char *request) {
char name[MAX_STRING_SIZE];
node_t *n;
- if(sscanf(c->buffer, "%*d %*x " MAX_STRING, name) != 1) {
- logger(LOG_ERR, "Got bad %s from %s (%s)", "KEY_CHANGED",
+ if(sscanf(request, "%*d %*x " MAX_STRING, name) != 1) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "KEY_CHANGED",
c->name, c->hostname);
return false;
}
- if(!check_id(name)) {
- logger(LOG_ERR, "Got bad %s from %s (%s): %s", "KEY_CHANGED", c->name, c->hostname, "invalid name");
- return false;
- }
-
- if(seen_request(c->buffer))
+ if(seen_request(request))
return true;
n = lookup_node(name);
if(!n) {
- logger(LOG_ERR, "Got %s from %s (%s) origin %s which does not exist",
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) origin %s which does not exist",
"KEY_CHANGED", c->name, c->hostname, name);
return true;
}
- n->status.validkey = false;
- n->last_req_key = 0;
+ if(!n->status.sptps) {
+ n->status.validkey = false;
+ n->last_req_key = 0;
+ }
/* Tell the others */
if(!tunnelserver)
- forward_request(c);
+ forward_request(c, request);
return true;
}
+static bool send_sptps_data_myself(void *handle, uint8_t type, const void *data, size_t len) {
+ return send_sptps_data(handle, myself, type, data, len);
+}
+
+static bool send_initial_sptps_data(void *handle, uint8_t type, const void *data, size_t len) {
+ node_t *to = handle;
+ to->sptps.send_data = send_sptps_data_myself;
+ char buf[len * 4 / 3 + 5];
+ b64encode(data, buf, len);
+ return send_request(to->nexthop->connection, "%d %s %s %d %s", REQ_KEY, myself->name, to->name, REQ_KEY, buf);
+}
+
bool send_req_key(node_t *to) {
+ if(to->status.sptps) {
+ if(!node_read_ecdsa_public_key(to)) {
+ logger(DEBUG_PROTOCOL, LOG_DEBUG, "No Ed25519 key known for %s (%s)", to->name, to->hostname);
+ send_request(to->nexthop->connection, "%d %s %s %d", REQ_KEY, myself->name, to->name, REQ_PUBKEY);
+ return true;
+ }
+
+ char label[25 + strlen(myself->name) + strlen(to->name)];
+ snprintf(label, sizeof label, "tinc UDP key expansion %s %s", myself->name, to->name);
+ sptps_stop(&to->sptps);
+ to->status.validkey = false;
+ to->status.waitingforkey = true;
+ to->last_req_key = now.tv_sec;
+ to->incompression = myself->incompression;
+ return sptps_start(&to->sptps, to, true, true, myself->connection->ecdsa, to->ecdsa, label, sizeof label, send_initial_sptps_data, receive_sptps_record);
+ }
+
return send_request(to->nexthop->connection, "%d %s %s", REQ_KEY, myself->name, to->name);
}
-bool req_key_h(connection_t *c) {
+/* REQ_KEY is overloaded to allow arbitrary requests to be routed between two nodes. */
+
+static bool req_key_ext_h(connection_t *c, const char *request, node_t *from, node_t *to, int reqno) {
+ /* If this is a SPTPS packet, see if sending UDP info helps.
+ Note that we only do this if we're the destination or the static relay;
+ otherwise every hop would initiate its own UDP info message, resulting in elevated chatter. */
+ if((reqno == REQ_KEY || reqno == SPTPS_PACKET) && to->via == myself)
+ send_udp_info(myself, from);
+
+ if(reqno == SPTPS_PACKET) {
+ /* This is a SPTPS data packet. */
+
+ char buf[MAX_STRING_SIZE];
+ int len;
+ if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode(buf, buf, strlen(buf)))) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s) to %s (%s): %s", "SPTPS_PACKET", from->name, from->hostname, to->name, to->hostname, "invalid SPTPS data");
+ return true;
+ }
+
+ if(to != myself) {
+ /* We don't just forward the request, because we want to use UDP if it's available. */
+ send_sptps_data(to, from, 0, buf, len);
+ try_tx(to, true);
+ } else {
+ /* The packet is for us */
+ if(!sptps_receive_data(&from->sptps, buf, len)) {
+ /* Uh-oh. It might be that the tunnel is stuck in some corrupted state,
+ so let's restart SPTPS in case that helps. But don't do that too often
+ to prevent storms. */
+ if(from->last_req_key < now.tv_sec - 10) {
+ logger(DEBUG_PROTOCOL, LOG_ERR, "Failed to decode TCP packet from %s (%s), restarting SPTPS", from->name, from->hostname);
+ send_req_key(from);
+ }
+ return true;
+ }
+ send_mtu_info(myself, from, MTU);
+ }
+
+ return true;
+ }
+
+ /* Requests that are not SPTPS data packets are forwarded as-is. */
+
+ if (to != myself)
+ return send_request(to->nexthop->connection, "%s", request);
+
+ /* The request is for us */
+
+ switch(reqno) {
+ case REQ_PUBKEY: {
+ if(!node_read_ecdsa_public_key(from)) {
+ /* Request their key *before* we send our key back. Otherwise the first SPTPS packet from them will get dropped. */
+ logger(DEBUG_PROTOCOL, LOG_DEBUG, "Preemptively requesting Ed25519 key for %s (%s)", from->name, from->hostname);
+ send_request(from->nexthop->connection, "%d %s %s %d", REQ_KEY, myself->name, from->name, REQ_PUBKEY);
+ }
+ char *pubkey = ecdsa_get_base64_public_key(myself->connection->ecdsa);
+ send_request(from->nexthop->connection, "%d %s %s %d %s", REQ_KEY, myself->name, from->name, ANS_PUBKEY, pubkey);
+ free(pubkey);
+ return true;
+ }
+
+ case ANS_PUBKEY: {
+ if(node_read_ecdsa_public_key(from)) {
+ logger(DEBUG_PROTOCOL, LOG_WARNING, "Got ANS_PUBKEY from %s (%s) even though we already have his pubkey", from->name, from->hostname);
+ return true;
+ }
+
+ char pubkey[MAX_STRING_SIZE];
+ if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, pubkey) != 1 || !(from->ecdsa = ecdsa_set_base64_public_key(pubkey))) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "ANS_PUBKEY", from->name, from->hostname, "invalid pubkey");
+ return true;
+ }
+
+ logger(DEBUG_PROTOCOL, LOG_INFO, "Learned Ed25519 public key from %s (%s)", from->name, from->hostname);
+ append_config_file(from->name, "Ed25519PublicKey", pubkey);
+ return true;
+ }
+
+ case REQ_KEY: {
+ if(!node_read_ecdsa_public_key(from)) {
+ logger(DEBUG_PROTOCOL, LOG_DEBUG, "No Ed25519 key known for %s (%s)", from->name, from->hostname);
+ send_request(from->nexthop->connection, "%d %s %s %d", REQ_KEY, myself->name, from->name, REQ_PUBKEY);
+ return true;
+ }
+
+ if(from->sptps.label)
+ logger(DEBUG_ALWAYS, LOG_DEBUG, "Got REQ_KEY from %s while we already started a SPTPS session!", from->name);
+
+ char buf[MAX_STRING_SIZE];
+ int len;
+
+ if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode(buf, buf, strlen(buf)))) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "REQ_SPTPS_START", from->name, from->hostname, "invalid SPTPS data");
+ return true;
+ }
+
+ char label[25 + strlen(from->name) + strlen(myself->name)];
+ snprintf(label, sizeof label, "tinc UDP key expansion %s %s", from->name, myself->name);
+ sptps_stop(&from->sptps);
+ from->status.validkey = false;
+ from->status.waitingforkey = true;
+ from->last_req_key = now.tv_sec;
+ sptps_start(&from->sptps, from, false, true, myself->connection->ecdsa, from->ecdsa, label, sizeof label, send_sptps_data_myself, receive_sptps_record);
+ sptps_receive_data(&from->sptps, buf, len);
+ send_mtu_info(myself, from, MTU);
+ return true;
+ }
+
+ default:
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unknown extended REQ_KEY request from %s (%s): %s", from->name, from->hostname, request);
+ return true;
+ }
+}
+
+bool req_key_h(connection_t *c, const char *request) {
char from_name[MAX_STRING_SIZE];
char to_name[MAX_STRING_SIZE];
node_t *from, *to;
+ int reqno = 0;
- if(sscanf(c->buffer, "%*d " MAX_STRING " " MAX_STRING, from_name, to_name) != 2) {
- logger(LOG_ERR, "Got bad %s from %s (%s)", "REQ_KEY", c->name,
+ if(sscanf(request, "%*d " MAX_STRING " " MAX_STRING " %d", from_name, to_name, &reqno) < 2) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "REQ_KEY", c->name,
c->hostname);
return false;
}
if(!check_id(from_name) || !check_id(to_name)) {
- logger(LOG_ERR, "Got bad %s from %s (%s): %s", "REQ_KEY", c->name, c->hostname, "invalid name");
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "REQ_KEY", c->name, c->hostname, "invalid name");
return false;
}
from = lookup_node(from_name);
if(!from) {
- logger(LOG_ERR, "Got %s from %s (%s) origin %s which does not exist in our connection list",
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) origin %s which does not exist in our connection list",
"REQ_KEY", c->name, c->hostname, from_name);
return true;
}
to = lookup_node(to_name);
if(!to) {
- logger(LOG_ERR, "Got %s from %s (%s) destination %s which does not exist in our connection list",
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) destination %s which does not exist in our connection list",
"REQ_KEY", c->name, c->hostname, to_name);
return true;
}
/* Check if this key request is for us */
- if(to == myself) { /* Yes, send our own key back */
+ if(to == myself) { /* Yes */
+ /* Is this an extended REQ_KEY message? */
+ if(experimental && reqno)
+ return req_key_ext_h(c, request, from, to, reqno);
+
+ /* No, just send our key back */
send_ans_key(from);
} else {
if(tunnelserver)
return true;
if(!to->status.reachable) {
- logger(LOG_WARNING, "Got %s from %s (%s) destination %s which is not reachable",
+ logger(DEBUG_PROTOCOL, LOG_WARNING, "Got %s from %s (%s) destination %s which is not reachable",
"REQ_KEY", c->name, c->hostname, to_name);
return true;
}
- send_request(to->nexthop->connection, "%s", c->buffer);
+ /* Is this an extended REQ_KEY message? */
+ if(experimental && reqno)
+ return req_key_ext_h(c, request, from, to, reqno);
+
+ send_request(to->nexthop->connection, "%s", request);
}
return true;
}
bool send_ans_key(node_t *to) {
- char *key;
+ if(to->status.sptps)
+ abort();
+
+#ifdef DISABLE_LEGACY
+ return false;
+#else
+ size_t keylen = myself->incipher ? cipher_keylength(myself->incipher) : 1;
+ char key[keylen * 2 + 1];
+
+ randomize(key, keylen);
+
+ cipher_close(to->incipher);
+ digest_close(to->indigest);
+
+ if(myself->incipher) {
+ to->incipher = cipher_open_by_nid(cipher_get_nid(myself->incipher));
+ if(!to->incipher)
+ abort();
+ if(!cipher_set_key(to->incipher, key, false))
+ abort();
+ }
- // Set key parameters
- to->incipher = myself->incipher;
- to->inkeylength = myself->inkeylength;
- to->indigest = myself->indigest;
- to->inmaclength = myself->inmaclength;
- to->incompression = myself->incompression;
+ if(myself->indigest) {
+ to->indigest = digest_open_by_nid(digest_get_nid(myself->indigest), digest_length(myself->indigest));
+ if(!to->indigest)
+ abort();
+ if(!digest_set_key(to->indigest, key, keylen))
+ abort();
+ }
- // Allocate memory for key
- to->inkey = xrealloc(to->inkey, to->inkeylength);
+ to->incompression = myself->incompression;
- // Create a new key
- RAND_pseudo_bytes((unsigned char *)to->inkey, to->inkeylength);
- if(to->incipher)
- EVP_DecryptInit_ex(&to->inctx, to->incipher, NULL, (unsigned char *)to->inkey, (unsigned char *)to->inkey + to->incipher->key_len);
+ bin2hex(key, key, keylen);
// Reset sequence number and late packet window
mykeyused = true;
to->received_seqno = 0;
- memset(to->late, 0, sizeof(to->late));
+ to->received = 0;
+ if(replaywin) memset(to->late, 0, replaywin);
- // Convert to hexadecimal and send
- key = alloca(2 * to->inkeylength + 1);
- bin2hex(to->inkey, key, to->inkeylength);
- key[to->inkeylength * 2] = '\0';
+ to->status.validkey_in = true;
return send_request(to->nexthop->connection, "%d %s %s %s %d %d %d %d", ANS_KEY,
- myself->name, to->name, key,
- to->incipher ? to->incipher->nid : 0,
- to->indigest ? to->indigest->type : 0, to->inmaclength,
- to->incompression);
+ myself->name, to->name, key,
+ cipher_get_nid(to->incipher),
+ digest_get_nid(to->indigest),
+ (int)digest_length(to->indigest),
+ to->incompression);
+#endif
}
-bool ans_key_h(connection_t *c) {
+bool ans_key_h(connection_t *c, const char *request) {
char from_name[MAX_STRING_SIZE];
char to_name[MAX_STRING_SIZE];
char key[MAX_STRING_SIZE];
char address[MAX_STRING_SIZE] = "";
char port[MAX_STRING_SIZE] = "";
- int cipher, digest, maclength, compression;
+ int cipher, digest, maclength, compression, keylen;
node_t *from, *to;
- if(sscanf(c->buffer, "%*d "MAX_STRING" "MAX_STRING" "MAX_STRING" %d %d %d %d "MAX_STRING" "MAX_STRING,
+ if(sscanf(request, "%*d "MAX_STRING" "MAX_STRING" "MAX_STRING" %d %d %d %d "MAX_STRING" "MAX_STRING,
from_name, to_name, key, &cipher, &digest, &maclength,
&compression, address, port) < 7) {
- logger(LOG_ERR, "Got bad %s from %s (%s)", "ANS_KEY", c->name,
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s)", "ANS_KEY", c->name,
c->hostname);
return false;
}
if(!check_id(from_name) || !check_id(to_name)) {
- logger(LOG_ERR, "Got bad %s from %s (%s): %s", "ANS_KEY", c->name, c->hostname, "invalid name");
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "ANS_KEY", c->name, c->hostname, "invalid name");
return false;
}
from = lookup_node(from_name);
if(!from) {
- logger(LOG_ERR, "Got %s from %s (%s) origin %s which does not exist in our connection list",
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) origin %s which does not exist in our connection list",
"ANS_KEY", c->name, c->hostname, from_name);
return true;
}
to = lookup_node(to_name);
if(!to) {
- logger(LOG_ERR, "Got %s from %s (%s) destination %s which does not exist in our connection list",
+ logger(DEBUG_ALWAYS, LOG_ERR, "Got %s from %s (%s) destination %s which does not exist in our connection list",
"ANS_KEY", c->name, c->hostname, to_name);
return true;
}
return true;
if(!to->status.reachable) {
- logger(LOG_WARNING, "Got %s from %s (%s) destination %s which is not reachable",
- "ANS_KEY", c->name, c->hostname, to_name);
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Got %s from %s (%s) destination %s which is not reachable",
+ "ANS_KEY", c->name, c->hostname, to_name);
return true;
}
- if(!*address) {
+ if(!*address && from->address.sa.sa_family != AF_UNSPEC) {
char *address, *port;
- ifdebug(PROTOCOL) logger(LOG_DEBUG, "Appending reflexive UDP address to ANS_KEY from %s to %s", from->name, to->name);
+ logger(DEBUG_PROTOCOL, LOG_DEBUG, "Appending reflexive UDP address to ANS_KEY from %s to %s", from->name, to->name);
sockaddr2str(&from->address, &address, &port);
- send_request(to->nexthop->connection, "%s %s %s", c->buffer, address, port);
+ send_request(to->nexthop->connection, "%s %s %s", request, address, port);
free(address);
free(port);
return true;
}
- return send_request(to->nexthop->connection, "%s", c->buffer);
+ return send_request(to->nexthop->connection, "%s", request);
}
- /* Update our copy of the origin's packet key */
- from->outkey = xrealloc(from->outkey, strlen(key) / 2);
-
- from->outkey = xstrdup(key);
- from->outkeylength = strlen(key) / 2;
- hex2bin(key, from->outkey, from->outkeylength);
+#ifndef DISABLE_LEGACY
+ /* Don't use key material until every check has passed. */
+ cipher_close(from->outcipher);
+ digest_close(from->outdigest);
+#endif
+ from->status.validkey = false;
- /* Check and lookup cipher and digest algorithms */
+ if(compression < 0 || compression > 11) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses bogus compression level!", from->name, from->hostname);
+ return true;
+ }
- if(cipher) {
- from->outcipher = EVP_get_cipherbynid(cipher);
+ from->outcompression = compression;
- if(!from->outcipher) {
- logger(LOG_ERR, "Node %s (%s) uses unknown cipher!", from->name,
- from->hostname);
+ /* SPTPS or old-style key exchange? */
+
+ if(from->status.sptps) {
+ char buf[strlen(key)];
+ int len = b64decode(key, buf, strlen(key));
+ if(!len || !sptps_receive_data(&from->sptps, buf, len)) {
+ /* Uh-oh. It might be that the tunnel is stuck in some corrupted state,
+ so let's restart SPTPS in case that helps. But don't do that too often
+ to prevent storms.
+ Note that simply relying on handshake timeout is not enough, because
+ that doesn't apply to key regeneration. */
+ if(from->last_req_key < now.tv_sec - 10) {
+ logger(DEBUG_PROTOCOL, LOG_ERR, "Failed to decode handshake TCP packet from %s (%s), restarting SPTPS", from->name, from->hostname);
+ send_req_key(from);
+ }
return true;
}
- if(from->outkeylength != from->outcipher->key_len + from->outcipher->iv_len) {
- logger(LOG_ERR, "Node %s (%s) uses wrong keylength!", from->name,
- from->hostname);
- return true;
+ if(from->status.validkey) {
+ if(*address && *port) {
+ logger(DEBUG_PROTOCOL, LOG_DEBUG, "Using reflexive UDP address from %s: %s port %s", from->name, address, port);
+ sockaddr_t sa = str2sockaddr(address, port);
+ update_node_udp(from, &sa);
+ }
}
- } else {
- from->outcipher = NULL;
- }
- from->outmaclength = maclength;
+ send_mtu_info(myself, from, MTU);
- if(digest) {
- from->outdigest = EVP_get_digestbynid(digest);
+ return true;
+ }
- if(!from->outdigest) {
- logger(LOG_ERR, "Node %s (%s) uses unknown digest!", from->name,
- from->hostname);
- return true;
+#ifdef DISABLE_LEGACY
+ logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses legacy protocol!", from->name, from->hostname);
+ return false;
+#else
+ /* Check and lookup cipher and digest algorithms */
+
+ if(cipher) {
+ if(!(from->outcipher = cipher_open_by_nid(cipher))) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses unknown cipher!", from->name, from->hostname);
+ return false;
}
+ } else {
+ from->outcipher = NULL;
+ }
- if(from->outmaclength > from->outdigest->md_size || from->outmaclength < 0) {
- logger(LOG_ERR, "Node %s (%s) uses bogus MAC length!",
- from->name, from->hostname);
- return true;
+ if(digest) {
+ if(!(from->outdigest = digest_open_by_nid(digest, maclength))) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses unknown digest!", from->name, from->hostname);
+ return false;
}
} else {
from->outdigest = NULL;
}
- if(compression < 0 || compression > 11) {
- logger(LOG_ERR, "Node %s (%s) uses bogus compression level!", from->name, from->hostname);
+ if(maclength != digest_length(from->outdigest)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses bogus MAC length!", from->name, from->hostname);
+ return false;
+ }
+
+ /* Process key */
+
+ keylen = hex2bin(key, key, sizeof key);
+
+ if(keylen != (from->outcipher ? cipher_keylength(from->outcipher) : 1)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses wrong keylength!", from->name, from->hostname);
return true;
}
-
- from->outcompression = compression;
- if(from->outcipher)
- if(!EVP_EncryptInit_ex(&from->outctx, from->outcipher, NULL, (unsigned char *)from->outkey, (unsigned char *)from->outkey + from->outcipher->key_len)) {
- logger(LOG_ERR, "Error during initialisation of key from %s (%s): %s",
- from->name, from->hostname, ERR_error_string(ERR_get_error(), NULL));
- return true;
- }
+ /* Update our copy of the origin's packet key */
+
+ if(from->outcipher && !cipher_set_key(from->outcipher, key, true))
+ return false;
+ if(from->outdigest && !digest_set_key(from->outdigest, key, keylen))
+ return false;
from->status.validkey = true;
from->sent_seqno = 0;
if(*address && *port) {
- ifdebug(PROTOCOL) logger(LOG_DEBUG, "Using reflexive UDP address from %s: %s port %s", from->name, address, port);
+ logger(DEBUG_PROTOCOL, LOG_DEBUG, "Using reflexive UDP address from %s: %s port %s", from->name, address, port);
sockaddr_t sa = str2sockaddr(address, port);
update_node_udp(from, &sa);
}
- if(from->options & OPTION_PMTU_DISCOVERY && !from->mtuprobes)
- send_mtu_probe(from);
-
return true;
+#endif
}
projects / tinc / blobdiff