tls: Provide buffer to Connection.setSession

lib/tls.js

@@ -1296,7 +1296,10 @@ exports.connect = function(/* [port, host], options, cb */) {
                             });
 
   if (options.session) {
-    pair.ssl.setSession(options.session);
+    var session = options.session;
+    if (typeof session === 'string')
+      session = new Buffer(session, 'binary');
+    pair.ssl.setSession(session);
   }
 
   var cleartext = pipe(pair, socket);