[feat] Add local flag to the socket object (#3219)

sleimanx2 · darrachequesne · commit 1decae341c80 · 2018-04-27T13:03:25.000+02:00
To match the behaviour on the namespace (see #2628).
diff --git a/lib/socket.js b/lib/socket.js
@@ -39,7 +39,8 @@ exports.events = [
 var flags = [
   'json',
   'volatile',
-  'broadcast'
+  'broadcast',
+  'local'
 ];
 
 /**
