From 13875e6a149779e77dcfe183a4010bf88847b721 Mon Sep 17 00:00:00 2001
From: Bob McElrath <bob_git@mcelrath.org>
Date: Thu, 2 Mar 2017 16:26:22 -0500
Subject: [PATCH] debugging

---
 index.js | 31 +++++++++++++++++++++++--------
 1 file changed, 23 insertions(+), 8 deletions(-)

diff --git a/index.js b/index.js
index 7d0a71a..f559b33 100644
--- a/index.js
+++ b/index.js
@@ -21,14 +21,7 @@ var Buffer = require('buffer').Buffer
 // to the right handlers.
 var servers = {}
 var sockets = {}
-
-// Thorough check for Chrome App since both Edge and Chrome implement dummy chrome object
-if (typeof chrome === 'object' && typeof chrome.runtime === 'object' && typeof chrome.runtime.id === 'string') {
-  chrome.sockets.tcpServer.onAccept.addListener(onAccept)
-  chrome.sockets.tcpServer.onAcceptError.addListener(onAcceptError)
-  chrome.sockets.tcp.onReceive.addListener(onReceive)
-  chrome.sockets.tcp.onReceiveError.addListener(onReceiveError)
-}
+var listenersAdded = false
 
 function onAccept (info) {
   if (info.socketId in servers) {
@@ -138,6 +131,17 @@ function Server (options, connectionListener) {
   if (!(this instanceof Server)) return new Server(options, connectionListener)
   EventEmitter.call(this)
 
+  if(!listenersAdded) {
+    // Thorough check for Chrome App since both Edge and Chrome implement dummy chrome object
+    if (typeof chrome === 'object' && typeof chrome.runtime === 'object') {
+      chrome.sockets.tcpServer.onAccept.addListener(onAccept)
+      chrome.sockets.tcpServer.onAcceptError.addListener(onAcceptError)
+      chrome.sockets.tcp.onReceive.addListener(onReceive)
+      chrome.sockets.tcp.onReceiveError.addListener(onReceiveError)
+      listenersAdded = true
+    }
+  }
+
   if (typeof options === 'function') {
     connectionListener = options
     options = {}
@@ -516,6 +520,17 @@ inherits(Socket, stream.Duplex)
 function Socket (options) {
   if (!(this instanceof Socket)) return new Socket(options)
 
+  if(!listenersAdded) {
+    // Thorough check for Chrome App since both Edge and Chrome implement dummy chrome object
+    if (typeof chrome === 'object' && typeof chrome.runtime === 'object') {
+      chrome.sockets.tcpServer.onAccept.addListener(onAccept)
+      chrome.sockets.tcpServer.onAcceptError.addListener(onAcceptError)
+      chrome.sockets.tcp.onReceive.addListener(onReceive)
+      chrome.sockets.tcp.onReceiveError.addListener(onReceiveError)
+      listenersAdded = true
+    }
+  }
+
   if (typeof options === 'number') {
     options = { fd: options } // Legacy interface.
   } else if (options === undefined) {