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-rw-r--r--src/init.cpp11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/init.cpp b/src/init.cpp
index 220df5ebf7..374e756abd 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -393,6 +393,8 @@ std::string HelpMessage(HelpMessageMode mode)
strUsage += HelpMessageGroup(_("Wallet options:"));
strUsage += HelpMessageOpt("-disablewallet", _("Do not load the wallet and disable wallet RPC calls"));
strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), DEFAULT_KEYPOOL_SIZE));
+ strUsage += HelpMessageOpt("-fallbackfee=<amt>", strprintf(_("A fee rate (in %s/kB) that will be used when fee estimation has insufficient data (default: %s)"),
+ CURRENCY_UNIT, FormatMoney(DEFAULT_FALLBACK_FEE)));
strUsage += HelpMessageOpt("-mintxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)"),
CURRENCY_UNIT, FormatMoney(DEFAULT_TRANSACTION_MINFEE)));
strUsage += HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in %s/kB) to add to transactions you send (default: %s)"),
@@ -959,6 +961,15 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
else
return InitError(AmountErrMsg("mintxfee", mapArgs["-mintxfee"]));
}
+ if (mapArgs.count("-fallbackfee"))
+ {
+ CAmount nFeePerK = 0;
+ if (!ParseMoney(mapArgs["-fallbackfee"], nFeePerK))
+ return InitError(strprintf(_("Invalid amount for -fallbackfee=<amount>: '%s'"), mapArgs["-fallbackfee"]));
+ if (nFeePerK > nHighTransactionFeeWarning)
+ InitWarning(_("-fallbackfee is set very high! This is the transaction fee you may pay when fee estimates are not available."));
+ CWallet::fallbackFee = CFeeRate(nFeePerK);
+ }
if (mapArgs.count("-paytxfee"))
{
CAmount nFeePerK = 0;