From a3e9fab86f9d8c24906eeebca201e40ef63a68df Mon Sep 17 00:00:00 2001
From: Jacob Heun <jacobheun@gmail.com>
Date: Tue, 29 May 2018 20:29:44 +0200
Subject: [PATCH] fix: prevent undefined error during a mutual hangup

---
 src/dial.js  | 5 +++--
 src/index.js | 5 +++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/dial.js b/src/dial.js
index 46aa401..bb3e139 100644
--- a/src/dial.js
+++ b/src/dial.js
@@ -267,8 +267,9 @@ class Dialer {
           }
 
           const muxedConn = this.switch.muxers[key].dialer(conn)
-          this.switch.muxedConns[b58Id] = {}
-          this.switch.muxedConns[b58Id].muxer = muxedConn
+          this.switch.muxedConns[b58Id] = {
+            muxer: muxedConn
+          }
 
           muxedConn.once('close', () => {
             delete this.switch.muxedConns[b58Id]
diff --git a/src/index.js b/src/index.js
index 0ccea35..1b096bd 100644
--- a/src/index.js
+++ b/src/index.js
@@ -110,6 +110,11 @@ class Switch extends EE {
     this.stats.stop()
     series([
       (cb) => each(this.muxedConns, (conn, cb) => {
+        // If the connection was destroyed while we are hanging up, continue
+        if (!conn) {
+          return cb()
+        }
+
         conn.muxer.end((err) => {
           // If OK things are fine, and someone just shut down
           if (err && err.message !== 'Fatal error: OK') {