X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fchain%2Fchaininterface.rs;h=d875dcce3e128c1443a2deaa46f1a8465a7cd06b;hb=42e2f1d1a645156180cbcc664989df78175301d2;hp=be86261f0c0300bafd1deb5d495838716acd1391;hpb=af7e9b608d7a78dbb1a87a31a5b45c758f15c0ec;p=rust-lightning

diff --git a/lightning/src/chain/chaininterface.rs b/lightning/src/chain/chaininterface.rs
index be86261f..d875dcce 100644
--- a/lightning/src/chain/chaininterface.rs
+++ b/lightning/src/chain/chaininterface.rs
@@ -19,13 +19,25 @@ use bitcoin::blockdata::transaction::Transaction;
 
 /// An interface to send a transaction to the Bitcoin network.
 pub trait BroadcasterInterface {
-	/// Sends a transaction out to (hopefully) be mined.
-	fn broadcast_transaction(&self, tx: &Transaction);
+	/// Sends a list of transactions out to (hopefully) be mined.
+	/// This only needs to handle the actual broadcasting of transactions, LDK will automatically
+	/// rebroadcast transactions that haven't made it into a block.
+	///
+	/// In some cases LDK may attempt to broadcast a transaction which double-spends another
+	/// and this isn't a bug and can be safely ignored.
+	///
+	/// If more than one transaction is given, these transactions should be considered to be a
+	/// package and broadcast together. Some of the transactions may or may not depend on each other,
+	/// be sure to manage both cases correctly.
+	///
+	/// Bitcoin transaction packages are defined in BIP 331 and here:
+	/// https://github.com/bitcoin/bitcoin/blob/master/doc/policy/packages.md
+	fn broadcast_transactions(&self, txs: &[&Transaction]);
 }
 
 /// An enum that represents the speed at which we want a transaction to confirm used for feerate
 /// estimation.
-#[derive(Clone, Copy, PartialEq, Eq)]
+#[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)]
 pub enum ConfirmationTarget {
 	/// We are happy with this transaction confirming slowly when feerate drops some.
 	Background,
@@ -56,7 +68,7 @@ pub trait FeeEstimator {
 pub const MIN_RELAY_FEE_SAT_PER_1000_WEIGHT: u64 = 4000;
 /// Minimum feerate that takes a sane approach to bitcoind weight-to-vbytes rounding.
 /// See the following Core Lightning commit for an explanation:
-/// https://github.com/ElementsProject/lightning/commit/2e687b9b352c9092b5e8bd4a688916ac50b44af0
+/// <https://github.com/ElementsProject/lightning/commit/2e687b9b352c9092b5e8bd4a688916ac50b44af0>
 pub const FEERATE_FLOOR_SATS_PER_KW: u32 = 253;
 
 /// Wraps a `Deref` to a `FeeEstimator` so that any fee estimations provided by it