[DNM] broadcast tx kernel hash (if supported by peer) (#1929)

broadcast tx kernel hash (if supported by peer)

pool/src/pool.rs

@@ -66,6 +66,18 @@ impl Pool {
 			.map(|x| x.tx.clone())
 	}
 
+	/// Query the tx pool for an individual tx matching the given kernel hash.
+	pub fn retrieve_tx_by_kernel_hash(&self, hash: Hash) -> Option<Transaction> {
+		for x in &self.entries {
+			for k in x.tx.kernels() {
+				if k.hash() == hash {
+					return Some(x.tx.clone());
+				}
+			}
+		}
+		None
+	}
+
 	/// Query the tx pool for all known txs based on kernel short_ids
 	/// from the provided compact_block.
 	/// Note: does not validate that we return the full set of required txs.

pool/src/transaction_pool.rs

@@ -201,6 +201,11 @@ impl TransactionPool {
 		Ok(())
 	}
 
+	/// Retrieve individual transaction for the given kernel hash.
+	pub fn retrieve_tx_by_kernel_hash(&self, hash: Hash) -> Option<Transaction> {
+		self.txpool.retrieve_tx_by_kernel_hash(hash)
+	}
+
 	/// Retrieve all transactions matching the provided "compact block"
 	/// based on the kernel set.
 	/// Note: we only look in the txpool for this (stempool is under embargo).