Facebook对象调试器错误502和解析输入URL时出错

Question

嗯，这个网站使用AWS EC2，现在当我在Facebook上分享网站时，facebook不会显示任何内容，但昨天它运作良好。

现在Facebook lint（对象调试器）说

  

解析输入网址时没有错误，没有缓存任何数据，也没有删除任何数据。

和

  

卷曲错误：RECV_ERROR之后从代理收到HTTP代码502   CONNECT

但是当我在Mac上使用curl via terminal（如curl -v -X TRACE www.cuinzy.com）时，返回：

* Rebuilt URL to: www.cuinzy.com/
* Hostname was NOT found in DNS cache
*   Trying 54.207.48.99...
* Connected to www.cuinzy.com (127.0.0.1) port 80 (#0)
> TRACE / HTTP/1.1
> User-Agent: curl/7.37.1
> Host: www.cuinzy.com
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Mon, 17 Aug 2015 10:14:36 GMT
* Server Apache is not blacklisted
< Server: Apache
< Connection: close
< Transfer-Encoding: chunked
< Content-Type: message/http
<
TRACE / HTTP/1.1
User-Agent: curl/7.37.1
Host: www.cuinzy.com
Accept: */*

* Closing connection 0

www.cuinzy.com上的卷曲返回响应代码200，如果尝试使用网址https://www.cuinzy.com/itm/572-aumento-natural-del-busto-pueraria-mirifica-100-x-500mg.html，则返回：

* Hostname was NOT found in DNS cache
*   Trying 54.207.48.99...
* Connected to www.cuinzy.com (127.0.0.1) port 443 (#0)
* TLS 1.2 connection using TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
* Server certificate: *.cuinzy.com
* Server certificate: COMODO RSA Domain Validation Secure Server CA
* Server certificate: COMODO RSA Certification Authority
* Server certificate: AddTrust External CA Root
> TRACE /itm/572-aumento-natural-del-busto-pueraria-mirifica-100-x-500mg.html HTTP/1.1
> User-Agent: curl/7.37.1
> Host: www.cuinzy.com
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Mon, 17 Aug 2015 10:16:25 GMT
* Server Apache is not blacklisted
< Server: Apache
< Connection: close
< Transfer-Encoding: chunked
< Content-Type: message/http
<
TRACE /itm/572-aumento-natural-del-busto-pueraria-mirifica-100-x-500mg.html HTTP/1.1
User-Agent: curl/7.37.1
Host: www.cuinzy.com
Accept: */*

* Closing connection 0

看看SSL的使用如何不代表变化，另外，请注意http响应代码始终为200.

而且，如果我点击Facebook Lint的 See exactly what our scraper sees for your URL 链接，这只会返回：

Document returned no data

啊，另外，我尝试这个工具（并且所有返回http响应代码200并且工作正常）：

• 通过mac上的终端卷曲
• http://httpstatus.io/
• http://iframely.com/debug?uri=https%3A%2F%2Fwww.cuinzy.com%2Fitm%2F572-aumento-natural-del-busto-pueraria-mirifica-100-x-500mg.html
• http://opengraphcheck.com/result.php?url=https%3A%2F%2Fwww.cuinzy.com%2Fitm%2F572-aumento-natural-del-busto-pueraria-mirifica-100-x-500mg.html#.VdG3hVN_Oko
• https://coveloping.com/tools/open-graph-tag-tester

如果你知道发生什么事，请告诉我，我不明白......

P.S：抱歉我的英语不好。