void DatagramDestination::SendMsg(
I2NPMessage* msg,
std::shared_ptr<const i2p::data::LeaseSet> remote) {
auto outboundTunnel = m_Owner.GetTunnelPool()->GetNextOutboundTunnel();
auto leases = remote->GetNonExpiredLeases();
if (!leases.empty() && outboundTunnel) {
std::vector<i2p::tunnel::TunnelMessageBlock> msgs;
uint32_t i = i2p::crypto::RandInRange<uint32_t>(0, leases.size() - 1);
auto garlic = m_Owner.WrapMessage(remote, ToSharedI2NPMessage(msg), true);
msgs.push_back(
i2p::tunnel::TunnelMessageBlock {
i2p::tunnel::e_DeliveryTypeTunnel,
leases[i].tunnel_gateway,
leases[i].tunnel_ID,
garlic});
outboundTunnel->SendTunnelDataMsg(msgs);
} else {
if (outboundTunnel)
LogPrint(eLogWarn,
"DatagramDestination: failed to send datagram: all leases expired");
else
LogPrint(eLogWarn,
"DatagramDestination: failed to send datagram: no outbound tunnels");
DeleteI2NPMessage(msg);
}
}
void DatagramDestination::SendMsg (I2NPMessage * msg, std::shared_ptr<const i2p::data::LeaseSet> remote)
{
auto outboundTunnel = m_Owner.GetTunnelPool ()->GetNextOutboundTunnel ();
auto leases = remote->GetNonExpiredLeases ();
if (!leases.empty () && outboundTunnel)
{
std::vector<i2p::tunnel::TunnelMessageBlock> msgs;
uint32_t i = i2p::context.GetRandomNumberGenerator ().GenerateWord32 (0, leases.size () - 1);
auto garlic = m_Owner.WrapMessage (remote, ToSharedI2NPMessage (msg), true);
msgs.push_back (i2p::tunnel::TunnelMessageBlock
{
i2p::tunnel::eDeliveryTypeTunnel,
leases[i].tunnelGateway, leases[i].tunnelID,
garlic
});
outboundTunnel->SendTunnelDataMsg (msgs);
}
else
{
if (outboundTunnel)
LogPrint (eLogWarning, "Failed to send datagram. All leases expired");
else
LogPrint (eLogWarning, "Failed to send datagram. No outbound tunnels");
DeleteI2NPMessage (msg);
}
}
void NetDbRequests::ManageRequests() {
uint64_t ts = i2p::util::GetSecondsSinceEpoch();
std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
for (auto it = m_RequestedDestinations.begin();
it != m_RequestedDestinations.end();) {
auto& dest = it->second;
bool done = false;
// request is worthless after 1 minute
if (ts < dest->GetCreationTime() + 60) {
// no response for 5 seconds
if (ts > dest->GetCreationTime() + 5) {
auto count = dest->GetExcludedPeers().size();
std::size_t attempts(7);
if (!dest->IsExploratory() && count < attempts) {
auto pool = i2p::tunnel::tunnels.GetExploratoryPool();
auto outbound = pool->GetNextOutboundTunnel();
auto inbound = pool->GetNextInboundTunnel();
auto nextFloodfill = netdb.GetClosestFloodfill(
dest->GetDestination(),
dest->GetExcludedPeers());
if (nextFloodfill && outbound && inbound) {
outbound->SendTunnelDataMsg(
nextFloodfill->GetIdentHash(),
0,
dest->CreateRequestMessage(
nextFloodfill,
inbound));
} else {
done = true;
if (!inbound)
LogPrint(eLogWarn, "NetDbRequests: no inbound tunnels");
if (!outbound)
LogPrint(eLogWarn, "NetDbRequests: no outbound tunnels");
if (!nextFloodfill)
LogPrint(eLogWarn, "NetDbRequests: no more floodfills");
}
} else {
if (!dest->IsExploratory())
LogPrint(eLogWarn,
"NetDbRequests: ", dest->GetDestination().ToBase64(),
" not found after ", attempts, " attempts");
done = true;
}
}
} else { // delete obsolete request
done = true;
}
if (done)
it = m_RequestedDestinations.erase(it);
else
it++;
}
}
