Introduce -dustrelayfee

1 files changed, 7 insertions, 0 deletions

diff --git a/src/policy/policy.h b/src/policy/policy.h
index 039122a59e..9b1323ac26 100644
--- a/src/policy/policy.h
+++ b/src/policy/policy.h
@@ -40,6 +40,12 @@ static const unsigned int MAX_STANDARD_P2WSH_STACK_ITEMS = 100;
 static const unsigned int MAX_STANDARD_P2WSH_STACK_ITEM_SIZE = 80;
 /** The maximum size of a standard witnessScript */
 static const unsigned int MAX_STANDARD_P2WSH_SCRIPT_SIZE = 3600;
+/** Min feerate for defining dust. Historically this has been the same as the
+ * minRelayTxFee, however changing the dust limit changes which transactions are
+ * standard and should be done with care and ideally rarely. It makes sense to
+ * only increase the dust limit after prior releases were already not creating
+ * outputs below the new threshold */
+static const unsigned int DUST_RELAY_TX_FEE = 1000;
 /**
  * Standard script verification flags that standard transactions will comply
  * with. However scripts violating these flags may still be present in valid
@@ -88,6 +94,7 @@ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs)
 bool IsWitnessStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs);
 
 extern CFeeRate incrementalRelayFee;
+extern CFeeRate dustRelayFee;
 extern unsigned int nBytesPerSigOp;
 
 /** Compute the virtual transaction size (weight reinterpreted as bytes). */