iOS网页错误通过蜂窝数据但不通过Wifi？最近对AT& T Cellular网络的改变？ [英] iOS Web page errors over Cellular Data but not over Wifi? Recent change to AT&T Cellular network?
问题描述
我遇到某些iOS网页（在移动版Safari，Chrome以及应用中的iOS网页中）的问题，而不是网络数据与Wifi，
I'm encountering an issue with certain iOS web pages (in both mobile Safari, Chrome, and in also iOS Webviews in app) over cellular data vs. Wifi,
该问题与此前其他人发布的问题相同：
The issue is identical to what was previously posted by someone else here:
很遗憾没有答案发布到上述网址。
Unfortunately no answers yet posted to the above URL.
基本上，我一直在HTML中看到无关的随机垃圾字符，这些字符来自蜂窝数据，但同样的页面加载完全可以通过Wifi。这不是下载速度或连接问题，它似乎是蜂窝网络上一些无法解释的数据传输/解释故障。我已经能够在不同的位置和不同的设备上复制相同的问题。
Basically, I'm consistently seeing extraneous random garbage characters in the HTML that comes down from cellular data, but the same page loading perfectly okay via Wifi. This isn't a download speed or poor connection issue, it seems to be some inexplicable data transfer/interpretation malfunction over the cellular network. I've been able to replicate the same problem at different locations and with different devices.
一个加载Wifi但加载错误的页面示例（JavaScript和由于上述无关的垃圾字符而导致的CSS错误数据在这里：
An example of a page that loads okay with Wifi but loads with errors (JavaScript and CSS errors because of the aforementioned extraneous garbage characters) over data is here:
还有其他人遇到过同样的问题吗？非常感谢任何见解。
Has anyone else encountered the same issue? Any insights greatly appreciated.
推荐答案
内容类型不是问题，但这让我更多地思考页面可能在我的服务器，网络和最终客户端之间进行了转换。
The content-type wasn't the issue, but that got me thinking more about how the pages were possibly being transformed between my server, the network, and ultimately the client.
经过一些试验和错误后我删除了JQuery引用，之后页面正确加载到AT& ; T celullar数据。这导致了另一个Google搜索，并最终根据以下网址找到问题的答案：
After some trial and error I eliminated JQuery references, after which the pages then loaded correctly over AT&T celullar data. That led to another Google search, and ultimately the answer to the problem as per the below URLs:
http://bugs.jquery.com/ticket/8917
...上面的JQuery bug报告这两个URL的引用修复，其中一个实际上来自stackoverflow：
... The above JQuery bug report referenced fixes at these two URLs, one of which was actually from stackoverflow:
http://mobiforge.com/design-development/setting-http-headers-advise-transcoding-proxies
网站在3G / iPhone下的iPad上显示JavaScript错误但不在WiFi下
总之，问题在于最近的变化是AT& T蜂窝数据网络，类似于上述URL中描述的网络。即AT& T以某种方式修改某些网页内容，然后再将其发送到iPhone和iPad。修复很简单，只需为不希望由AT& T网络更改/转换的页面设置Cache-Controlno-transform标题。
In summary, the issue is with a recent change at the AT&T cellular data network, similar to that described in the above URLs. i.e. AT&T is in some way modifying certain web content before sending it on to iPhones and iPads. The fix is simple, just set the Cache-Control "no-transform" header for pages you don't want changed/transformed by the AT&T network.
I通过以下方式在PHP中为选择页面手动设置标题：
I'm manually setting the header in PHP for select pages via:
header（Cache-Control：no-transform）;
header("Cache-Control: no-transform");
....但我认为它可以在目录的.htaccess文件中全局设置，或者在虚拟主机文件中的域或httpd.conf文件中的整个服务器中设置，例如：
.... but I assume it could be globally set in a directory's .htaccess file, or for the domain in the virtual host file or the entire server in the httpd.conf file, e.g.:
标头集缓存控制无变换
Header set Cache-Control "no-transform"
我不知道设置无变换将如何影响性能，我远不是Apache配置设置或网络的专家，但上面至少现在解决了最初的问题。
I don't know how setting "no-transform" will effect performance, I'm far from an expert on Apache configuration settings or networks, but the above has at least for now solved the initial problem.
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