From a7e2ae23d79c4630cf990a638bee6c58e1005beb 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 450265c..00070ca 100644
--- a/src/dial.js
+++ b/src/dial.js
@@ -212,8 +212,9 @@ 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..825d97b 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 === undefined) {
+          return cb()
+        }
+
         conn.muxer.end((err) => {
           // If OK things are fine, and someone just shut down
           if (err && err.message !== 'Fatal error: OK') {