From 3988d2766d50c6676341a1b4564f33d84794bbf8 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Tue, 28 Feb 2017 23:19:11 -0800
Subject: [PATCH] mempool: add double spend events.

---
 lib/mempool/mempool.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/mempool/mempool.js b/lib/mempool/mempool.js
index aaf80d93..c66e87ae 100644
--- a/lib/mempool/mempool.js
+++ b/lib/mempool/mempool.js
@@ -823,6 +823,7 @@ Mempool.prototype.insertTX = co(function* insertTX(tx) {
   // not double-spending an output in the
   // mempool.
   if (this.isDoubleSpend(tx)) {
+    this.emit('conflict', tx);
     throw new VerifyError(tx,
       'duplicate',
       'bad-txns-inputs-spent',
@@ -1895,6 +1896,8 @@ Mempool.prototype.removeDoubleSpends = function removeDoubleSpends(tx) {
       spent.tx.rhash());
 
     this.removeEntry(spent, true);
+
+    this.emit('double spend', spent);
   }
 };