From 1de2df0c3a43941d5c44a29d29c45599411c60bb Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Tue, 24 May 2016 16:24:03 -0700
Subject: [PATCH] ignore misbehaving leeches.

---
 lib/bcoin/pool.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/bcoin/pool.js b/lib/bcoin/pool.js
index 10184c5c..01fb78b5 100644
--- a/lib/bcoin/pool.js
+++ b/lib/bcoin/pool.js
@@ -429,10 +429,22 @@ Pool.prototype.listen = function listen(callback) {
   }
 
   this.server.on('connection', function(socket) {
+    var hostname;
+
     if (self.peers.leeches.length >= self.maxLeeches) {
+      hostname = utils.hostname(socket.remoteAddress, socket.remotePort);
+      bcoin.debug('Ignoring leech: too many leeches (%s).', hostname);
       socket.destroy();
       return;
     }
+
+    if (self.isMisbehaving(socket.remoteAddress)) {
+      hostname = utils.hostname(socket.remoteAddress, socket.remotePort);
+      bcoin.debug('Ignoring misbehaving leech (%s).', hostname);
+      socket.destroy();
+      return;
+    }
+
     self._addLeech(socket);
   });