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merged DHT fix from RC_0_16

This commit is contained in:
Arvid Norberg 2014-01-17 04:49:04 +00:00
parent 36889a1524
commit b621f3f00a
3 changed files with 46 additions and 41 deletions
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1
ChangeLog
View File

@ -38,6 +38,7 @@
* fix uTP edge case where udp socket buffer fills up
* fix nagle implementation in uTP
* fix DHT memory error
* change semantics of storage allocation to allocate on first write rather
than on startup (behaves better with changing file priorities)
* fix resend logic in response to uTP SACK messages

8
include/libtorrent/kademlia/routing_table.hpp
View File

@ -85,6 +85,8 @@ struct routing_table_node
class TORRENT_EXTRA_EXPORT routing_table
{
public:
typedef std::vector<routing_table_node> table_t;
routing_table(node_id const& id, int bucket_size
, dht_settings const& settings);
@ -127,6 +129,8 @@ public:
// are nearest to the given id.
void find_node(node_id const& id, std::vector<node_entry>& l
, int options, int count = 0);
void remove_node(node_entry* n
, table_t::iterator bucket) ;
int bucket_size(int bucket) const
{
@ -174,8 +178,6 @@ public:
private:
typedef std::vector<routing_table_node> table_t;
table_t::iterator find_bucket(node_id const& id);
void split_bucket();
@ -227,7 +229,7 @@ private:
// table. It's used to only allow a single entry
// per IP in the whole table. Currently only for
// IPv4
std::set<address_v4::bytes_type> m_ips;
std::multiset<address_v4::bytes_type> m_ips;
};
} } // namespace libtorrent::dht

74
src/kademlia/routing_table.cpp
View File

@ -415,6 +415,30 @@ node_entry* routing_table::find_node(udp::endpoint const& ep
return 0;
}
void routing_table::remove_node(node_entry* n
, routing_table::table_t::iterator bucket)
{
if (!bucket->replacements.empty()
&& n >= &bucket->replacements[0]
&& n < &bucket->replacements[0] + bucket->replacements.size())
{
int idx = n - &bucket->replacements[0];
TORRENT_ASSERT(m_ips.count(n->endpoint.address().to_v4().to_bytes()) > 0);
m_ips.erase(n->endpoint.address().to_v4().to_bytes());
bucket->replacements.erase(bucket->replacements.begin() + idx);
}
if (!bucket->live_nodes.empty()
&& n >= &bucket->live_nodes[0]
&& n < &bucket->live_nodes[0] + bucket->live_nodes.size())
{
int idx = n - &bucket->live_nodes[0];
TORRENT_ASSERT(m_ips.count(n->endpoint.address().to_v4().to_bytes()) > 0);
m_ips.erase(n->endpoint.address().to_v4().to_bytes());
bucket->live_nodes.erase(bucket->live_nodes.begin() + idx);
}
}
bool routing_table::add_node(node_entry e)
{
INVARIANT_CHECK;
@ -428,11 +452,11 @@ bool routing_table::add_node(node_entry e)
if (e.id == m_id) return ret;
// do we already have this IP in the table?
if (m_ips.find(e.addr().to_v4().to_bytes()) != m_ips.end())
if (m_ips.count(e.addr().to_v4().to_bytes()) > 0)
{
// this exact IP already exists in the table. It might be the case
// that the node changed IP. If pinged is true, and the port also
// matches the we assume it's in fact the same node, and just update
// matches then we assume it's in fact the same node, and just update
// the routing table
// pinged means that we have sent a message to the IP, port and received
// a response with a correct transaction ID, i.e. it is verified to not
@ -454,44 +478,22 @@ bool routing_table::add_node(node_entry e)
return ret;
}
}
TORRENT_ASSERT(e.pinged() && existing);
else if (existing && existing->id == e.id)
{
// if the node ID is the same, just update the failcount
// and be done with it
if (existing->id == e.id)
{
existing->timeout_count = 0;
existing->update_rtt(e.rtt);
return ret;
}
// delete the current entry before we instert the new one
bucket_t& b = existing_bucket->live_nodes;
bucket_t& rb = existing_bucket->replacements;
bucket_t::iterator i = std::find_if(b.begin(), b.end()
, boost::bind(&node_entry::ep, _1) == e.ep());
if (i != b.end())
else if (existing)
{
#ifdef TORRENT_DHT_VERBOSE_LOGGING
TORRENT_LOG(table) << "node ID changed, deleting old entry: "
<< i->id << " " << i->addr();
#endif
b.erase(i);
TORRENT_ASSERT(existing->id != e.id);
// this is the same IP and port, but with
// a new node ID. remove the old entry and
// replace it with this new ID
remove_node(existing, existing_bucket);
}
else
{
i = std::find_if(rb.begin(), rb.end()
, boost::bind(&node_entry::ep, _1) == e.ep());
// this must hold because existing != NULL
TORRENT_ASSERT(i != rb.end());
#ifdef TORRENT_DHT_VERBOSE_LOGGING
TORRENT_LOG(table) << "node ID changed, deleting old entry: "
<< i->id << " " << i->addr();
#endif
rb.erase(i);
}
m_ips.erase(e.addr().to_v4().to_bytes());
}
table_t::iterator i = find_bucket(e.id);
@ -812,9 +814,6 @@ void routing_table::split_bucket()
int bucket_size_limit = bucket_limit(bucket_index);
TORRENT_ASSERT(m_buckets.back().live_nodes.size() >= bucket_size_limit);
bucket_t& b = m_buckets.back().live_nodes;
bucket_t& rb = m_buckets.back().replacements;
// this is the last bucket, and it's full already. Split
// it by adding another bucket
m_buckets.push_back(routing_table_node());
@ -824,6 +823,9 @@ void routing_table::split_bucket()
bucket_t& new_bucket = m_buckets.back().live_nodes;
bucket_t& new_replacement_bucket = m_buckets.back().replacements;
bucket_t& b = m_buckets[bucket_index].live_nodes;
bucket_t& rb = m_buckets[bucket_index].replacements;
// move any node whose (160 - distane_exp(m_id, id)) >= (i - m_buckets.begin())
// to the new bucket
int new_bucket_size = bucket_limit(bucket_index + 1);
@ -1081,7 +1083,7 @@ void routing_table::find_node(node_id const& target
#if defined TORRENT_DEBUG && !defined TORRENT_DISABLE_INVARIANT_CHECKS
void routing_table::check_invariant() const
{
std::set<address_v4::bytes_type> all_ips;
std::multiset<address_v4::bytes_type> all_ips;
for (table_t::const_iterator i = m_buckets.begin()
, end(m_buckets.end()); i != end; ++i)