From 6444d5796ebb2fe0a4e3a84cb25e3a094568f625 Mon Sep 17 00:00:00 2001
From: Matteo Pagliazzi <matteopagliazzi@gmail.com>
Date: Fri, 20 Sep 2013 15:59:17 +0200
Subject: [PATCH 1/4] set wasmodified to true if missing req.query._v

---
 src/controllers/auth.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/controllers/auth.js b/src/controllers/auth.js
index 0d569b337c..1269dbec2d 100644
--- a/src/controllers/auth.js
+++ b/src/controllers/auth.js
@@ -37,7 +37,8 @@ api.auth = function(req, res, next) {
     if (_.isEmpty(user)) {
       return res.json(401, NO_USER_FOUND);
     }
-    res.locals.wasModified = +user._v !== +req.query._v;
+
+    res.locals.wasModified = (req.query._v ? +user._v !== +req.query._v : true);
     res.locals.user = user;
     req.session.userId = user._id;
     return next();

From 3b273dadeeb8178f2346a76c1edf7108230b33bb Mon Sep 17 00:00:00 2001
From: Matteo Pagliazzi <matteopagliazzi@gmail.com>
Date: Fri, 20 Sep 2013 16:00:07 +0200
Subject: [PATCH 2/4] typo

---
 src/controllers/auth.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/controllers/auth.js b/src/controllers/auth.js
index 1269dbec2d..dd4ace6c40 100644
--- a/src/controllers/auth.js
+++ b/src/controllers/auth.js
@@ -38,7 +38,7 @@ api.auth = function(req, res, next) {
       return res.json(401, NO_USER_FOUND);
     }
 
-    res.locals.wasModified = (req.query._v ? +user._v !== +req.query._v : true);
+    res.locals.wasModified = req.query._v ? +user._v !== +req.query._v : true;
     res.locals.user = user;
     req.session.userId = user._id;
     return next();

From 0c0e0834be421dc3c223e84a5a0d8d9b120b2d40 Mon Sep 17 00:00:00 2001
From: Matteo Pagliazzi <matteopagliazzi@gmail.com>
Date: Fri, 20 Sep 2013 16:01:09 +0200
Subject: [PATCH 3/4] send response only if modified or drop

---
 src/controllers/user.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/controllers/user.js b/src/controllers/user.js
index c1373777d2..8bbbc8ace7 100644
--- a/src/controllers/user.js
+++ b/src/controllers/user.js
@@ -710,7 +710,14 @@ api.batchUpdate = function(req, res, next) {
     response = user.toJSON();
     response.wasModified = res.locals.wasModified;
     if (response._tmp && response._tmp.drop) response.wasModified = true;
-    res.json(200, response);
+
+    // Send the response to the server
+    if(response.wasModified){
+      res.json(200, response);
+    }else{
+      res.json(204);
+    }
+
     return console.log("Reply sent");
   });
 };
\ No newline at end of file

From 2d02e49e06ae541c3c4e94ca6e393629dca851da Mon Sep 17 00:00:00 2001
From: Matteo Pagliazzi <matteopagliazzi@gmail.com>
Date: Fri, 20 Sep 2013 16:09:55 +0200
Subject: [PATCH 4/4] always send _v

---
 src/controllers/user.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/controllers/user.js b/src/controllers/user.js
index 8bbbc8ace7..2570b05445 100644
--- a/src/controllers/user.js
+++ b/src/controllers/user.js
@@ -715,7 +715,7 @@ api.batchUpdate = function(req, res, next) {
     if(response.wasModified){
       res.json(200, response);
     }else{
-      res.json(204);
+      res.json(200, {_v: response._v});
     }
 
     return console.log("Reply sent");