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Chrome "undefined" appended URL causes 404 Not Found 2012-10-28 20:50 |
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Random "undefined" appended URL causes 404 Not Found @ Chrome
有發現一些怪現象,尤其是這個 Chrome 18 or Chrome 22 這個瀏覽器
會導致約有 0.08% 的機率,隨機的要求 "undefined" 這個物件,
但是明明網站沒有任何 undefined 的物件。
Guess: 猜測是 Windows Chrome 22 版本的 BUG?
User-Agent:
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4
171 / 212627 = 0.08%
代碼:
$ wc access.log
212627 3844687 53484813
$ grep -r "undefined HTTP" access.log | wc
171 3097 37608
$ grep -r "undefined HTTP" access.log | grep Safari | wc
169 3047 37099
$ grep -r "undefined HTTP" access.log | grep 'Safari/537' | wc
168 3028 36855
$ grep -r "undefined HTTP" access.log | grep 'Safari/537' | grep -i 'Chrome' | wc
169 3046 37079
上述實際 access.log 測試結果。 ________________
美術插畫設計案子報價系統 v0.1 Beta
爪哇禾雀
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繪圖畫廊 設計藝廊 攝影相簿 留言板 最愛收藏 分類標籤
暱稱: Type 註冊: 2002-11-30 發表: 11173 來自: vovo2000.com
V幣: 901761
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Re: Chrome "undefined" appended URL causes 404 Not Found 2012-10-31 12:24 |
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IE 好像也會造成 Undefined,Chrome 佔多數
發生的機率非常低,使用者應該也沒感覺(因為這是 Server 端記錄到的)
不確定誰造成的
Google Plus +1 Button Javascript
- Google Adsense Javascript
- Google Analytics Javascript
- Facebook Like-Button Javascript
代碼:
$ grep "undefined" access.log.1 | wc
76 1407 17419
$ grep "undefined" access.log.1 | grep Chrome | wc
67 1223 15192
$ grep "undefined" access.log.1 | grep IE | wc
9 184 2227
$ grep "undefined" access.log.1 | grep Firefox | wc
0 0 0
________________
美術插畫設計案子報價系統 v0.1 Beta
爪哇禾雀
|
|
Type
繪圖畫廊 設計藝廊 攝影相簿 留言板 最愛收藏 分類標籤
暱稱: Type 註冊: 2002-11-30 發表: 11173 來自: vovo2000.com
V幣: 901761
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Re: Chrome "undefined" appended URL causes 404 Not Found 2012-11-30 13:47 |
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The "random /undefined 404" symptom still exists there
Seemingly most of them are __STILL__ "Google Chrome 23" clients.
If you already prepare some customzied HTTP-404-Not-Found handle script,
you may want to add some early-exit to save your CPU%.
your-404-not-found.php
代碼:
<?PHP
# ... SNIP ... your code
$undef_str = substr($_SERVER['REQUEST_URI'], -10, 10);
if ($undef_str == '/undefined')
{
echo 'https://vovo2000.com';
exit;
}
# ... SNIP ... your code
?>
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Type
繪圖畫廊 設計藝廊 攝影相簿 留言板 最愛收藏 分類標籤
暱稱: Type 註冊: 2002-11-30 發表: 11173 來自: vovo2000.com
V幣: 901761
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