void fullnode::start()
{
// Subscribe to new connections.
protocol_.subscribe_channel(
std::bind(&fullnode::connection_started, this, _1, _2));
// Start blockchain. Must finish before any operations
// are performed on the database (or they will fail).
std::promise<std::error_code> ec_promise;
auto blockchain_started =
[&ec_promise](const std::error_code& ec)
{
ec_promise.set_value(ec);
};
chain_.start("blockchain", blockchain_started);
std::error_code ec = ec_promise.get_future().get();
if (ec)
{
log_error() << "Problem starting blockchain: " << ec.message();
return;
}
// Start transaction pool
txpool_.start();
// Fire off app.
auto handle_start =
std::bind(&fullnode::handle_start, this, _1);
session_.start(handle_start);
}
void connection_started(const std::error_code& ec, channel_ptr node,
protocol& prot)
{
if (ec)
{
log_warning() << "Couldn't start connection: " << ec.message();
return;
}
log_info() << "Connection established.";
// Resubscribe to new nodes.
prot.subscribe_channel(
std::bind(connection_started, _1, _2, std::ref(prot)));
}
void fullnode::connection_started(const std::error_code& ec, channel_ptr node)
{
if (ec)
{
log_warning() << "Couldn't start connection: " << ec.message();
return;
}
// Subscribe to transaction messages from this node.
node->subscribe_transaction(
std::bind(&fullnode::recv_tx, this, _1, _2, node));
// Stay subscribed to new connections.
protocol_.subscribe_channel(
std::bind(&fullnode::connection_started, this, _1, _2));
}
void connection_started(const std::error_code& ec, channel_ptr node,
protocol& prot, tx_watch& watch)
{
if (ec)
{
log_warning() << "Couldn't start connection: " << ec.message();
return;
}
log_info() << "Connection established.";
// Subscribe to inventory packets.
node->subscribe_inventory(
std::bind(inventory_received, _1, _2, node, std::ref(watch)));
// Resubscribe to new nodes.
prot.subscribe_channel(
std::bind(connection_started, _1, _2, std::ref(prot), std::ref(watch)));
}
void send_tx(const std::error_code& ec, channel_ptr node,
protocol& prot, transaction_type& tx)
{
check_error(ec);
std::cout << "sendtx-p2p: Sending " << hash_transaction(tx) << std::endl;
auto handle_send =
[](const std::error_code& ec)
{
if (ec)
log_warning() << "Send failed: " << ec.message();
else
std::cout << "sendtx-p2p: Sent "
<< time(nullptr) << std::endl;
};
node->send(tx, handle_send);
prot.subscribe_channel(
std::bind(send_tx, _1, _2, std::ref(prot), std::ref(tx)));
}