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authorWladimir J. van der Laan <laanwj@gmail.com>2017-07-19 16:38:09 +0200
committerWladimir J. van der Laan <laanwj@gmail.com>2017-07-19 16:46:49 +0200
commit9022aa37226b6779e1b86b0c625806226898590a (patch)
treeb8aa22ceda7d24b0a79e46463ef0bfadf6fe0c40 /src/init.cpp
parenta6ec5802b0a9449bb498a68bb2aa40f1ca7be698 (diff)
parentf4d00e63f7951469c840edede3f675d07249f62a (diff)
Merge #10817: Redefine Dust and add a discard_rate
f4d00e6 Add a discard_rate (Alex Morcos) b138585 Remove factor of 3 from definition of dust. (Alex Morcos) Pull request description: The definition of dust is redefined to remove the factor of 3. Dust is redefined to be the value of an output such that it would cost that value in fees to (create and) spend the output at the dust relay rate. The previous definition was that it would cost 1/3 of the value. The default dust relay rate is correspondingly increased to 3000 sat/kB so the actual default dust output value of 546 satoshis for a non-segwit output remains unchanged. This commit is a refactor only unless a dustrelayfee is passed on the commandline in which case that number now needs to be increased by a factor of 3 to get the same behavior. -dustrelayfee is a hidden command line option. Note: It's not exactly a refactor due to edge case changes in rounding as evidenced by the required change to the unit test. A discard_rate is added which defaults to 10,000 sat/kB Any change output which would be dust at the discard_rate you are willing to discard completely and add to fee (as well as continuing to pay the fee that would have been needed for creating the change) This would be a nice addition for 0.15 and I think will remain useful for 0.16 with the new coin selection algorithms in discussion, but its not crucial. It does add translation strings, but we could (should?) avoid that by hiding the option Tree-SHA512: 5b6f655354d0ab6b8b6cac1e8d1fe3136d10beb15c6d948fb15bfb105155a9d03684c6240624039b3eed6428b7e60e54216cc8b2f90c4600701e39f646284a9b
Diffstat (limited to 'src/init.cpp')
-rw-r--r--src/init.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/init.cpp b/src/init.cpp
index d9b98be739..f0dbdb47c6 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -479,7 +479,7 @@ std::string HelpMessage(HelpMessageMode mode)
if (showDebug) {
strUsage += HelpMessageOpt("-acceptnonstdtxn", strprintf("Relay and mine \"non-standard\" transactions (%sdefault: %u)", "testnet/regtest only; ", defaultChainParams->RequireStandard()));
strUsage += HelpMessageOpt("-incrementalrelayfee=<amt>", strprintf("Fee rate (in %s/kB) used to define cost of relay, used for mempool limiting and BIP 125 replacement. (default: %s)", CURRENCY_UNIT, FormatMoney(DEFAULT_INCREMENTAL_RELAY_FEE)));
- strUsage += HelpMessageOpt("-dustrelayfee=<amt>", strprintf("Fee rate (in %s/kB) used to defined dust, the value of an output such that it will cost about 1/3 of its value in fees at this fee rate to spend it. (default: %s)", CURRENCY_UNIT, FormatMoney(DUST_RELAY_TX_FEE)));
+ strUsage += HelpMessageOpt("-dustrelayfee=<amt>", strprintf("Fee rate (in %s/kB) used to defined dust, the value of an output such that it will cost more than its value in fees at this fee rate to spend it. (default: %s)", CURRENCY_UNIT, FormatMoney(DUST_RELAY_TX_FEE)));
}
strUsage += HelpMessageOpt("-bytespersigop", strprintf(_("Equivalent bytes per sigop in transactions for relay and mining (default: %u)"), DEFAULT_BYTES_PER_SIGOP));
strUsage += HelpMessageOpt("-datacarrier", strprintf(_("Relay and mine data carrier transactions (default: %u)"), DEFAULT_ACCEPT_DATACARRIER));