From 0fdb7795e104e192b90c60556916ab93e6b83750 Mon Sep 17 00:00:00 2001
From: Florian Rey <nervo@nervo.net>
Date: Thu, 10 Oct 2013 13:40:26 +0200
Subject: [PATCH] Test for connection attachement before cascading error

---
 WsServer.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/WsServer.php b/WsServer.php
index 9337934..1b7c199 100644
--- a/WsServer.php
+++ b/WsServer.php
@@ -150,7 +150,9 @@ class WsServer implements HttpServerInterface {
      */
     public function onError(ConnectionInterface $conn, \Exception $e) {
         if ($conn->WebSocket->established) {
-            $this->component->onError($this->connections[$conn], $e);
+            if ($this->connections->contains($conn)) {
+                $this->component->onError($this->connections[$conn], $e);
+            }
         } else {
             $conn->close();
         }