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Decrease minimum fee from 0.01/kB to 0.002/kB

Browse source 
The wallet will start using that fee about two weeks after hard
fork 3, when most people will likely have updated their daemons.
This commit is contained in:
moneromooo-monero 2016-09-14 23:54:01 +01:00
parent 0fde289e2f
commit cd01bae735
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
3 changed files with 21 additions and 15 deletions
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3
src/cryptonote_config.h
View file

@ -62,7 +62,8 @@
// COIN - number of smallest units in one coin
#define COIN ((uint64_t)1000000000000) // pow(10, 12)
#define FEE_PER_KB ((uint64_t)10000000000) // pow(10, 10)
#define FEE_PER_KB_OLD ((uint64_t)10000000000) // pow(10, 10)
#define FEE_PER_KB ((uint64_t)2000000000) // 2 * pow(10, 9)
#define ORPHANED_BLOCKS_MAX_COUNT 100

31
src/wallet/wallet2.cpp
View file

@ -98,16 +98,16 @@ void do_prepare_file_names(const std::string& file_path, std::string& keys_file,
}
}
uint64_t calculate_fee(size_t bytes, uint64_t fee_multiplier)
uint64_t calculate_fee(uint64_t fee_per_kb, size_t bytes, uint64_t fee_multiplier)
{
THROW_WALLET_EXCEPTION_IF(fee_multiplier <= 0 || fee_multiplier > 3, tools::error::invalid_fee_multiplier);
uint64_t kB = (bytes + 1023) / 1024;
return kB * FEE_PER_KB * fee_multiplier;
return kB * fee_per_kb * fee_multiplier;
}
uint64_t calculate_fee(const cryptonote::blobdata &blob, uint64_t fee_multiplier)
uint64_t calculate_fee(uint64_t fee_per_kb, const cryptonote::blobdata &blob, uint64_t fee_multiplier)
{
return calculate_fee(blob.size(), fee_multiplier);
return calculate_fee(fee_per_kb, blob.size(), fee_multiplier);
}
} //namespace
@ -2556,6 +2556,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions(std::vector<crypto
{
const std::vector<size_t> unused_transfers_indices = select_available_outputs_from_histogram(fake_outs_count + 1, true, true, trusted_daemon);
const uint64_t fee_per_kb = use_fork_rules(3, -720 * 14) ? FEE_PER_KB : FEE_PER_KB_OLD;
fee_multiplier = sanitize_fee_multiplier(fee_multiplier);
// failsafe split attempt counter
@ -2588,7 +2589,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions(std::vector<crypto
{
transfer(dst_vector, fake_outs_count, unused_transfers_indices, unlock_time, needed_fee, extra, tx, ptx, trusted_daemon);
auto txBlob = t_serializable_object_to_blob(ptx.tx);
needed_fee = calculate_fee(txBlob, fee_multiplier);
needed_fee = calculate_fee(fee_per_kb, txBlob, fee_multiplier);
} while (ptx.fee < needed_fee);
ptx_vector.push_back(ptx);
@ -3233,6 +3234,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
uint64_t upper_transaction_size_limit = get_upper_tranaction_size_limit();
const bool use_rct = use_fork_rules(4, 0);
const uint64_t fee_per_kb = use_fork_rules(3, -720 * 14) ? FEE_PER_KB : FEE_PER_KB_OLD;
fee_multiplier = sanitize_fee_multiplier(fee_multiplier);
// throw if attempting a transaction with no destinations
@ -3286,7 +3288,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
{
// this is used to build a tx that's 1 or 2 inputs, and 2 outputs, which
// will get us a known fee.
uint64_t estimated_fee = calculate_fee(estimate_rct_tx_size(2, fake_outs_count + 1, 2), fee_multiplier);
uint64_t estimated_fee = calculate_fee(fee_per_kb, estimate_rct_tx_size(2, fake_outs_count + 1, 2), fee_multiplier);
prefered_inputs = pick_prefered_rct_inputs(needed_money + estimated_fee);
if (!prefered_inputs.empty())
{
@ -3380,7 +3382,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
transfer_selected(tx.dsts, tx.selected_transfers, fake_outs_count, unlock_time, needed_fee, extra,
detail::digit_split_strategy, tx_dust_policy(::config::DEFAULT_DUST_THRESHOLD), test_tx, test_ptx);
auto txBlob = t_serializable_object_to_blob(test_ptx.tx);
needed_fee = calculate_fee(txBlob, fee_multiplier);
needed_fee = calculate_fee(fee_per_kb, txBlob, fee_multiplier);
available_for_fee = test_ptx.fee + test_ptx.change_dts.amount + (!test_ptx.dust_added_to_fee ? test_ptx.dust : 0);
LOG_PRINT_L2("Made a " << txBlob.size() << " kB tx, with " << print_money(available_for_fee) << " available for fee (" <<
print_money(needed_fee) << " needed)");
@ -3484,6 +3486,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_all(const cryptono
uint64_t upper_transaction_size_limit = get_upper_tranaction_size_limit();
const bool use_rct = use_fork_rules(4, 0);
const uint64_t fee_per_kb = use_fork_rules(3, -720 * 14) ? FEE_PER_KB : FEE_PER_KB_OLD;
fee_multiplier = sanitize_fee_multiplier(fee_multiplier);
// gather all our dust and non dust outputs
@ -3514,7 +3517,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_all(const cryptono
// get a random unspent output and use it to pay next chunk. We try to alternate
// dust and non dust to ensure we never get with only dust, from which we might
// get a tx that can't pay for itself
size_t idx = unused_transfers_indices.empty() ? pop_best_value(unused_dust_indices, tx.selected_transfers) : unused_dust_indices.empty() ? pop_best_value(unused_transfers_indices, tx.selected_transfers) : ((tx.selected_transfers.size() & 1) || accumulated_outputs > FEE_PER_KB * fee_multiplier * (upper_transaction_size_limit + 1023) / 1024) ? pop_best_value(unused_dust_indices, tx.selected_transfers) : pop_best_value(unused_transfers_indices, tx.selected_transfers);
size_t idx = unused_transfers_indices.empty() ? pop_best_value(unused_dust_indices, tx.selected_transfers) : unused_dust_indices.empty() ? pop_best_value(unused_transfers_indices, tx.selected_transfers) : ((tx.selected_transfers.size() & 1) || accumulated_outputs > fee_per_kb * fee_multiplier * (upper_transaction_size_limit + 1023) / 1024) ? pop_best_value(unused_dust_indices, tx.selected_transfers) : pop_best_value(unused_transfers_indices, tx.selected_transfers);
const transfer_details &td = m_transfers[idx];
LOG_PRINT_L2("Picking output " << idx << ", amount " << print_money(td.amount()));
@ -3551,7 +3554,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_all(const cryptono
transfer_selected(tx.dsts, tx.selected_transfers, fake_outs_count, unlock_time, needed_fee, extra,
detail::digit_split_strategy, tx_dust_policy(::config::DEFAULT_DUST_THRESHOLD), test_tx, test_ptx);
auto txBlob = t_serializable_object_to_blob(test_ptx.tx);
needed_fee = calculate_fee(txBlob, fee_multiplier);
needed_fee = calculate_fee(fee_per_kb, txBlob, fee_multiplier);
available_for_fee = test_ptx.fee + test_ptx.dests[0].amount + test_ptx.change_dts.amount;
LOG_PRINT_L2("Made a " << txBlob.size() << " kB tx, with " << print_money(available_for_fee) << " available for fee (" <<
print_money(needed_fee) << " needed)");
@ -3568,7 +3571,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_all(const cryptono
transfer_selected(tx.dsts, tx.selected_transfers, fake_outs_count, unlock_time, needed_fee, extra,
detail::digit_split_strategy, tx_dust_policy(::config::DEFAULT_DUST_THRESHOLD), test_tx, test_ptx);
txBlob = t_serializable_object_to_blob(test_ptx.tx);
needed_fee = calculate_fee(txBlob, fee_multiplier);
needed_fee = calculate_fee(fee_per_kb, txBlob, fee_multiplier);
LOG_PRINT_L2("Made an attempt at a final " << ((txBlob.size() + 1023)/1024) << " kB tx, with " << print_money(test_ptx.fee) <<
" fee and " << print_money(test_ptx.change_dts.amount) << " change");
} while (needed_fee > test_ptx.fee);
@ -3753,7 +3756,7 @@ void wallet2::get_hard_fork_info(uint8_t version, uint64_t &earliest_height)
earliest_height = resp_t.result.earliest_height;
}
//----------------------------------------------------------------------------------------------------
bool wallet2::use_fork_rules(uint8_t version, uint64_t early_blocks)
bool wallet2::use_fork_rules(uint8_t version, int64_t early_blocks)
{
cryptonote::COMMAND_RPC_GET_HEIGHT::request req = AUTO_VAL_INIT(req);
cryptonote::COMMAND_RPC_GET_HEIGHT::response res = AUTO_VAL_INIT(res);
@ -3898,6 +3901,8 @@ std::vector<wallet2::pending_tx> wallet2::create_unmixable_sweep_transactions(bo
const bool hf1_rules = use_fork_rules(2, 10); // first hard fork has version 2
tx_dust_policy dust_policy(hf1_rules ? 0 : ::config::DEFAULT_DUST_THRESHOLD);
const uint64_t fee_per_kb = use_fork_rules(3, -720 * 14) ? FEE_PER_KB : FEE_PER_KB_OLD;
// may throw
std::vector<size_t> unmixable_outputs = select_available_unmixable_outputs(trusted_daemon);
size_t num_dust_outputs = unmixable_outputs.size();
@ -3931,13 +3936,13 @@ std::vector<wallet2::pending_tx> wallet2::create_unmixable_sweep_transactions(bo
{
transfer_from(unmixable_outputs, num_outputs_per_tx, (uint64_t)0 /* unlock_time */, 0, detail::digit_split_strategy, dust_policy, extra, tx, ptx);
auto txBlob = t_serializable_object_to_blob(ptx.tx);
needed_fee = calculate_fee(txBlob, 1);
needed_fee = calculate_fee(fee_per_kb, txBlob, 1);
// reroll the tx with the actual amount minus the fee
// if there's not enough for the fee, it'll throw
transfer_from(unmixable_outputs, num_outputs_per_tx, (uint64_t)0 /* unlock_time */, needed_fee, detail::digit_split_strategy, dust_policy, extra, tx, ptx);
txBlob = t_serializable_object_to_blob(ptx.tx);
needed_fee = calculate_fee(txBlob, 1);
needed_fee = calculate_fee(fee_per_kb, txBlob, 1);
} while (ptx.fee < needed_fee);
ptx_vector.push_back(ptx);

2
src/wallet/wallet2.h
View file

@ -395,7 +395,7 @@ namespace tools
uint64_t get_num_rct_outputs();
void get_hard_fork_info(uint8_t version, uint64_t &earliest_height);
bool use_fork_rules(uint8_t version, uint64_t early_blocks = 0);
bool use_fork_rules(uint8_t version, int64_t early_blocks = 0);
std::string get_wallet_file() const;
std::string get_keys_file() const;