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Restrict unite() to desperation==0 since NAT-t only works right now with direct links.

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This commit is contained in:
Adam Ierymenko 2015-04-10 10:13:50 -07:00
parent 068d311ecc
commit 5e331d6733
3 changed files with 11 additions and 8 deletions
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4
node/Peer.cpp
View File

@ -280,11 +280,11 @@ void Peer::resetWithinScope(const RuntimeEnvironment *RR,InetAddress::IpScope sc
}
}
void Peer::getBestActiveAddresses(uint64_t now,InetAddress &v4,InetAddress &v6) const
void Peer::getBestActiveAddresses(uint64_t now,InetAddress &v4,InetAddress &v6,unsigned int maxDesperation) const
{
uint64_t bestV4 = 0,bestV6 = 0;
for(unsigned int p=0,np=_numPaths;p<np;++p) {
if (_paths[p].active(now)) {
if ((_paths[p].active(now))&&(_paths[p].lastReceiveDesperation() <= maxDesperation)) {
uint64_t lr = _paths[p].lastReceived();
if (lr) {
if (_paths[p].address().isV4()) {

12
node/Peer.hpp
View File

@ -374,7 +374,7 @@ public:
}
/**
* Get most recently active UDP path addresses for IPv4 and/or IPv6
* Get most recently active path addresses for IPv4 and/or IPv6
*
* Note that v4 and v6 are not modified if they are not found, so
* initialize these to a NULL address to be able to check.
@ -382,8 +382,9 @@ public:
* @param now Current time
* @param v4 Result parameter to receive active IPv4 address, if any
* @param v6 Result parameter to receive active IPv6 address, if any
* @param maxDesperation Maximum link desperation to consider
*/
void getBestActiveAddresses(uint64_t now,InetAddress &v4,InetAddress &v6) const;
void getBestActiveAddresses(uint64_t now,InetAddress &v4,InetAddress &v6,unsigned int maxDesperation) const;
/**
* Find a common set of addresses by which two peers can link, if any
@ -391,13 +392,14 @@ public:
* @param a Peer A
* @param b Peer B
* @param now Current time
* @param maxDesperation Maximum link desperation to consider
* @return Pair: B's address (to send to A), A's address (to send to B)
*/
static inline std::pair<InetAddress,InetAddress> findCommonGround(const Peer &a,const Peer &b,uint64_t now)
static inline std::pair<InetAddress,InetAddress> findCommonGround(const Peer &a,const Peer &b,uint64_t now,unsigned int maxDesperation)
{
std::pair<InetAddress,InetAddress> v4,v6;
b.getBestActiveAddresses(now,v4.first,v6.first);
a.getBestActiveAddresses(now,v4.second,v6.second);
b.getBestActiveAddresses(now,v4.first,v6.first,maxDesperation);
a.getBestActiveAddresses(now,v4.second,v6.second,maxDesperation);
if ((v6.first)&&(v6.second)) // prefer IPv6 if both have it since NAT-t is (almost) unnecessary
return v6;
else if ((v4.first)&&(v4.second))

3
node/Switch.cpp
View File

@ -289,7 +289,8 @@ bool Switch::unite(const Address &p1,const Address &p2,bool force)
const uint64_t now = RR->node->now();
std::pair<InetAddress,InetAddress> cg(Peer::findCommonGround(*p1p,*p2p,now));
// Right now we only unite desperation == 0 links, which will be direct
std::pair<InetAddress,InetAddress> cg(Peer::findCommonGround(*p1p,*p2p,now,0));
if (!(cg.first))
return false;