doc: add note on tls connection meta data methods

PR-URL: #3746 Reviewed-By: Ben Noordhuis <[email protected]>
nodejs · Dec 23, 2015 · ebab03f · ebab03f
1 parent f7643ee
commit ebab03f
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diff --git a/doc/api/tls.markdown b/doc/api/tls.markdown
@@ -735,6 +735,10 @@ of written data and all required TLS negotiation.
 This instance implements a duplex [Stream][] interfaces.  It has all the
 common stream methods and events.
 
+Methods that return TLS connection meta data (e.g.
+[getPeerCertificate](#tlssocketgetpeercertificate-detailed-))
+will only return data while the connection is open.
+
 ### Event: 'secureConnect'
 
 This event is emitted after a new connection has been successfully handshaked.