void load_dht_state(lt::session& s)
{
FILE* f = fopen(".dht", "rb");
if (f == NULL) return;
fseek(f, 0, SEEK_END);
int size = ftell(f);
fseek(f, 0, SEEK_SET);
if (size > 0)
{
std::vector<char> state;
state.resize(size);
fread(&state[0], 1, state.size(), f);
bdecode_node e;
error_code ec;
bdecode(&state[0], &state[0] + state.size(), e, ec);
if (ec)
fprintf(stderr, "failed to parse .dht file: (%d) %s\n"
, ec.value(), ec.message().c_str());
else
{
printf("load dht state from .dht\n");
s.load_state(e);
}
}
fclose(f);
}
void bootstrap_session(std::vector<dht_network*> networks, lt::session& ses)
{
lt::dht_settings sett;
sett.ignore_dark_internet = false;
ses.set_dht_settings(sett);
lt::entry state;
for (auto dht : networks)
{
// bootstrap off of 8 of the nodes
auto router_nodes = dht->router_nodes();
char const* nodes_key;
if (router_nodes.front().address().is_v6())
nodes_key = "nodes6";
else
nodes_key = "nodes";
lt::entry::list_type& nodes = state["dht state"][nodes_key].list();
for (auto const& n : router_nodes)
{
std::string node;
std::back_insert_iterator<std::string> out(node);
lt::detail::write_endpoint(n, out);
nodes.push_back(lt::entry(node));
}
}
std::vector<char> buf;
lt::bencode(std::back_inserter(buf), state);
lt::bdecode_node e;
lt::error_code ec;
lt::bdecode(&buf[0], &buf[0] + buf.size(), e, ec);
ses.load_state(e);
lt::settings_pack pack;
pack.set_bool(lt::settings_pack::enable_dht, true);
ses.apply_settings(pack);
}