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use kademlia to pick floodfill for destination

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orignal 2014-01-22 07:44:41 -05:00
parent b409e525ba
commit a65400471a
2 changed files with 32 additions and 19 deletions
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41
NetDb.cpp
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@ -239,16 +239,6 @@ namespace data
void NetDb::RequestDestination (const IdentHash& destination, bool isLeaseSet)
{
auto floodfill= GetRandomNTCPRouter (true);
if (floodfill)
RequestDestination (destination, floodfill, isLeaseSet);
else
LogPrint ("No floodfill routers found");
}
void NetDb::RequestDestination (const IdentHash& destination, const RouterInfo * floodfill, bool isLeaseSet)
{
if (!floodfill) return;
i2p::tunnel::OutboundTunnel * outbound = i2p::tunnel::tunnels.GetNextOutboundTunnel ();
if (outbound)
{
@ -256,9 +246,31 @@ namespace data
if (inbound)
{
RequestedDestination * dest = CreateRequestedDestination (destination, isLeaseSet);
auto floodfill = GetClosestFloodfill (destination, dest->GetExcludedPeers ());
if (floodfill)
{
std::vector<i2p::tunnel::TunnelMessageBlock> msgs;
// our RouterInfo
msgs.push_back (i2p::tunnel::TunnelMessageBlock
{
i2p::tunnel::eDeliveryTypeRouter,
floodfill->GetIdentHash (), 0,
CreateDatabaseStoreMsg ()
});
// DatabaseLookup message
dest->SetLastOutboundTunnel (outbound);
auto msg = dest->CreateRequestMessage (floodfill, inbound);
outbound->SendTunnelDataMsg (floodfill->GetIdentHash (), 0, msg);
msgs.push_back (i2p::tunnel::TunnelMessageBlock
{
i2p::tunnel::eDeliveryTypeRouter,
floodfill->GetIdentHash (), 0,
dest->CreateRequestMessage (floodfill, inbound)
});
outbound->SendTunnelDataMsg (msgs);
}
else
LogPrint ("No more floodfills found");
}
else
LogPrint ("No inbound tunnels found");
@ -487,7 +499,8 @@ namespace data
if (msg) m_Queue.Put (msg);
}
const RouterInfo * NetDb::GetClosestFloodfill (const IdentHash& destination) const
const RouterInfo * NetDb::GetClosestFloodfill (const IdentHash& destination,
const std::set<IdentHash>& excluded) const
{
RouterInfo * r = nullptr;
XORMetric minMetric;
@ -495,7 +508,7 @@ namespace data
minMetric.SetMax ();
for (auto it: m_RouterInfos)
{
if (it.second->IsFloodfill () &&! it.second->IsUnreachable ())
if (it.second->IsFloodfill () &&! it.second->IsUnreachable () && !excluded.count (it.first))
{
XORMetric m = destKey ^ it.second->GetRoutingKey ();
if (m < minMetric)

4
NetDb.h
View file

@ -26,6 +26,7 @@ namespace data
const IdentHash& GetDestination () const { return m_Destination; };
int GetNumExcludedPeers () const { return m_ExcludedPeers.size (); };
const std::set<IdentHash>& GetExcludedPeers () { return m_ExcludedPeers; };
const RouterInfo * GetLastRouter () const { return m_LastRouter; };
const i2p::tunnel::InboundTunnel * GetLastReplyTunnel () const { return m_LastReplyTunnel; };
bool IsExploratory () const { return m_IsExploratory; };
@ -62,7 +63,6 @@ namespace data
void RequestDestination (const char * b32); // in base32
void RequestDestination (const IdentHash& destination, bool isLeaseSet = false);
void RequestDestination (const IdentHash& destination, const RouterInfo * floodfill, bool isLeaseSet = false);
void HandleDatabaseStoreMsg (uint8_t * buf, size_t len);
void HandleDatabaseSearchReplyMsg (I2NPMessage * msg);
@ -78,7 +78,7 @@ namespace data
void SaveUpdated (const char * directory);
void Run (); // exploratory thread
void Explore ();
const RouterInfo * GetClosestFloodfill (const IdentHash& destination) const;
const RouterInfo * GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
RequestedDestination * CreateRequestedDestination (const IdentHash& dest,
bool isLeaseSet, bool isExploratory = false);