From 063ea136ba8a10f422cdfde04fb82d09b77d1993 Mon Sep 17 00:00:00 2001
From: Nicolas Stepien <stepien.nicolas@gmail.com>
Date: Fri, 7 Sep 2012 22:20:26 +0200
Subject: [PATCH] Network tweak: get the Last-Modified header when we open the
 thread via a HEAD request.

---
 4chan_x.user.js | 9 +++++++++
 script.coffee   | 5 +++++
 2 files changed, 14 insertions(+)

diff --git a/4chan_x.user.js b/4chan_x.user.js
index 4b04b0d60..81c515f77 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -2851,6 +2851,15 @@
       this.thread = $.id("t" + g.THREAD_ID);
       this.unsuccessfulFetchCount = 0;
       this.lastModified = '0';
+      $.ajax("//api.4chan.org/" + g.BOARD + "/res/" + g.THREAD_ID + ".json", {
+        type: 'head',
+        onload: function() {
+          if (this.status !== 200) {
+            return;
+          }
+          return Updater.lastModified = this.getResponseHeader('Last-Modified');
+        }
+      });
       _ref = $$('input', dialog);
       for (_i = 0, _len = _ref.length; _i < _len; _i++) {
         input = _ref[_i];
diff --git a/script.coffee b/script.coffee
index 6867e9db9..fec950281 100644
--- a/script.coffee
+++ b/script.coffee
@@ -2281,6 +2281,11 @@ Updater =
 
     @unsuccessfulFetchCount = 0
     @lastModified = '0'
+    $.ajax "//api.4chan.org/#{g.BOARD}/res/#{g.THREAD_ID}.json",
+      type: 'head'
+      onload: ->
+        return if @status isnt 200
+        Updater.lastModified = @getResponseHeader 'Last-Modified'
 
     for input in $$ 'input', dialog
       if input.type is 'checkbox'