diff options
Diffstat (limited to 'src/wallet')
| -rw-r--r-- | src/wallet/wallet2.cpp | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index fad904031..0ab1035dd 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -8532,7 +8532,9 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton needed_fee = estimate_fee(use_per_byte_fee, use_rct, tx.selected_transfers.size(), fake_outs_count, tx.dsts.size()+1, extra.size(), bulletproof, base_fee, fee_multiplier, fee_quantization_mask); - tx.dsts.push_back(tx_destination_entry(1, address, is_subaddress)); + // add N - 1 outputs for correct initial fee estimation + for (size_t i = 0; i < ((outputs > 1) ? outputs - 1 : outputs); ++i) + tx.dsts.push_back(tx_destination_entry(1, address, is_subaddress)); LOG_PRINT_L2("Trying to create a tx now, with " << tx.dsts.size() << " destinations and " << tx.selected_transfers.size() << " outputs"); @@ -8544,15 +8546,35 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton 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(use_per_byte_fee, test_ptx.tx, txBlob.size(), base_fee, fee_multiplier, fee_quantization_mask); - available_for_fee = test_ptx.fee + test_ptx.dests[0].amount + test_ptx.change_dts.amount; + available_for_fee = test_ptx.fee + test_ptx.change_dts.amount; + for (auto &dt: test_ptx.dests) + available_for_fee += dt.amount; LOG_PRINT_L2("Made a " << get_weight_string(test_ptx.tx, txBlob.size()) << " tx, with " << print_money(available_for_fee) << " available for fee (" << print_money(needed_fee) << " needed)"); + // add last output, missed for fee estimation + if (outputs > 1) + tx.dsts.push_back(tx_destination_entry(1, address, is_subaddress)); + THROW_WALLET_EXCEPTION_IF(needed_fee > available_for_fee, error::wallet_internal_error, "Transaction cannot pay for itself"); do { LOG_PRINT_L2("We made a tx, adjusting fee and saving it"); - tx.dsts[0].amount = available_for_fee - needed_fee; + // distribute total transferred amount between outputs + uint64_t amount_transferred = available_for_fee - needed_fee; + uint64_t dt_amount = amount_transferred / outputs; + // residue is distributed as one atomic unit per output until it reaches zero + uint64_t residue = amount_transferred % outputs; + for (auto &dt: tx.dsts) + { + uint64_t dt_residue = 0; + if (residue > 0) + { + dt_residue = 1; + residue -= 1; + } + dt.amount = dt_amount + dt_residue; + } if (use_rct) transfer_selected_rct(tx.dsts, tx.selected_transfers, fake_outs_count, outs, unlock_time, needed_fee, extra, test_tx, test_ptx, range_proof_type); |