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track double spending in the txpool

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Transactions in the txpool are marked when another transaction
is seen double spending one or more of its inputs.
This is then exposed wherever appropriate.

Note that being marked with this "double spend seen" flag does
NOT mean this transaction IS a double spend and will never be
mined: it just means that the network has seen at least another
transaction spending at least one of the same inputs, so care
should be taken to wait for a few confirmations before acting
upon that transaction (ie, mostly of use for merchants wanting
to accept unconfirmed transactions).
This commit is contained in:
moneromooo-monero 2017-09-22 13:57:20 +01:00
parent 3dd31d33fa
commit ccf53a566c
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
16 changed files with 216 additions and 62 deletions
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4
src/daemon/rpc_command_executor.cpp
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@ -840,6 +840,7 @@ bool t_rpc_command_executor::print_transaction_pool_long() {
<< "relayed: " << [&](const cryptonote::tx_info &tx_info)->std::string { if (!tx_info.relayed) return "no"; return boost::lexical_cast<std::string>(tx_info.last_relayed_time) + " (" + get_human_time_ago(tx_info.last_relayed_time, now) + ")"; } (tx_info) << std::endl
<< "do_not_relay: " << (tx_info.do_not_relay ? 'T' : 'F') << std::endl
<< "kept_by_block: " << (tx_info.kept_by_block ? 'T' : 'F') << std::endl
<< "double_spend_seen: " << (tx_info.double_spend_seen ? 'T' : 'F') << std::endl
<< "max_used_block_height: " << tx_info.max_used_block_height << std::endl
<< "max_used_block_id: " << tx_info.max_used_block_id_hash << std::endl
<< "last_failed_height: " << tx_info.last_failed_height << std::endl
@ -922,6 +923,7 @@ bool t_rpc_command_executor::print_transaction_pool_short() {
<< "relayed: " << [&](const cryptonote::tx_info &tx_info)->std::string { if (!tx_info.relayed) return "no"; return boost::lexical_cast<std::string>(tx_info.last_relayed_time) + " (" + get_human_time_ago(tx_info.last_relayed_time, now) + ")"; } (tx_info) << std::endl
<< "do_not_relay: " << (tx_info.do_not_relay ? 'T' : 'F') << std::endl
<< "kept_by_block: " << (tx_info.kept_by_block ? 'T' : 'F') << std::endl
<< "double_spend_seen: " << (tx_info.double_spend_seen ? 'T' : 'F') << std::endl
<< "max_used_block_height: " << tx_info.max_used_block_height << std::endl
<< "max_used_block_id: " << tx_info.max_used_block_id_hash << std::endl
<< "last_failed_height: " << tx_info.last_failed_height << std::endl
@ -984,7 +986,7 @@ bool t_rpc_command_executor::print_transaction_pool_stats() {
tools::msg_writer() << n_transactions << " tx(es), " << res.pool_stats.bytes_total << " bytes total (min " << res.pool_stats.bytes_min << ", max " << res.pool_stats.bytes_max << ", avg " << avg_bytes << ", median " << res.pool_stats.bytes_med << ")" << std::endl
<< "fees " << cryptonote::print_money(res.pool_stats.fee_total) << " (avg " << cryptonote::print_money(n_transactions ? res.pool_stats.fee_total / n_transactions : 0) << " per tx" << ", " << cryptonote::print_money(res.pool_stats.bytes_total ? res.pool_stats.fee_total / res.pool_stats.bytes_total : 0) << " per byte)" << std::endl
<< res.pool_stats.num_not_relayed << " not relayed, " << res.pool_stats.num_failing << " failing, " << res.pool_stats.num_10m << " older than 10 minutes (oldest " << (res.pool_stats.oldest == 0 ? "-" : get_human_time_ago(res.pool_stats.oldest, now)) << "), " << backlog_message;
<< res.pool_stats.num_double_spends << " double spends, " << res.pool_stats.num_not_relayed << " not relayed, " << res.pool_stats.num_failing << " failing, " << res.pool_stats.num_10m << " older than 10 minutes (oldest " << (res.pool_stats.oldest == 0 ? "-" : get_human_time_ago(res.pool_stats.oldest, now)) << "), " << backlog_message;
if (n_transactions > 1 && res.pool_stats.histo.size())
{