X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fchain%2Fchaininterface.rs;h=d875dcce3e128c1443a2deaa46f1a8465a7cd06b;hb=52f290119d8c4dea74b7d03e716e61aacd4dfe3f;hp=e923a94bb6d3e7afb5f37376b6de132225821d21;hpb=ad4b91da88c678f04d92d0ad80d58bfab740146b;p=rust-lightning

diff --git a/lightning/src/chain/chaininterface.rs b/lightning/src/chain/chaininterface.rs
index e923a94b..d875dcce 100644
--- a/lightning/src/chain/chaininterface.rs
+++ b/lightning/src/chain/chaininterface.rs
@@ -19,8 +19,20 @@ 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