php 如何避免来自 LinkedIn 的“HTTP/1.1 999 请求被拒绝”响应？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/27571419/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to avoid "HTTP/1.1 999 Request denied" response from LinkedIn?
提问by zoonman
I'm making request to LinkedIn page and receiving "HTTP/1.1 999 Request denied" response. I use AWS/EC-2 and get this response. On localhost everything works fine.
我正在向 LinkedIn 页面发出请求并收到“HTTP/1.1 999 请求被拒绝”响应。我使用 AWS/EC-2 并得到此响应。在本地主机上一切正常。
This is sample of my code to get html-code of the page.
这是我获取页面 html 代码的代码示例。
<?php
error_reporting(E_ALL);
$url= 'https://www.linkedin.com/pulse/5-essential-strategies-digital-michelle';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
$response = curl_exec($ch);
$info = curl_getinfo($ch);
curl_close($ch);
var_dump($response);
var_dump($info);
I don't need whole page content, just meta-tags (title, og-tags).
我不需要整个页面内容，只需要元标签（标题、OG 标签）。
回答by Guilherme Nascimento
Note that the error 999don't exist in W3C Hypertext Transfer Protocol - HTTP/1.1, probably this error is customized (sounds like a joke)
请注意，错误999在W3C Hypertext Transfer Protocol - HTTP/1.1 中不存在，这个错误可能是自定义的（听起来像个笑话）
LinkedIn don't allow direct access, the probable reason of them blocking any "url" from others webservers access should be to:
LinkedIn 不允许直接访问，他们阻止其他网络服务器访问任何“url”的可能原因应该是：
- Prevent unauthorized copying of information
- Prevent invasions
- Prevent abuse of requests.
- Force use API
- 防止未经授权复制信息
- 防止入侵
- 防止滥用请求。
- 强制使用 API
Some IP addresses of servers are blocked, as the "IP" from "domestic ISP" are not blocked and that when you access the LinkedInwith web-browser you use the IP of your internet provider.
服务器的某些 IP 地址被阻止，因为来自“国内 ISP”的“IP”未被阻止，并且当您使用网络浏览器访问LinkedIn 时，您使用的是互联网提供商的 IP。
The only way to access the data is to use their APIs. See:
访问数据的唯一方法是使用它们的 API。看：
Note: The search engines like Googleand Bingprobably have their IPs in a "whitelist".
回答by Ond?ej Bleha
<?php
header("Content-Type: text/plain");
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.linkedin.com/company/technistone-a-s-");
$header = array();
$header[] = "Host: www.linkedin.com";
$header[] = "User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0";
$header[] = "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
$header[] = "Accept-Language: en-US,en;q=0.5";
$header[] = "Accept-Encoding: gzip, deflate, br";
$header[] = "Connection: keep-alive";
$header[] = "Upgrade-Insecure-Requests: 1";
curl_setopt($ch,CURLOPT_ENCODING , "gzip");
curl_setopt($ch, CURLOPT_HTTPHEADER , $header);
$my_var = curl_exec($ch);
echo $my_var;
回答by Mike Veazie - MSFT
I ran into this while doing local web development and using the LinkedIn badge feature (profile.js). I was only getting the 999 Request deniedin Chrome, so I just cleared my browser cache and localStorage and it started to work again.
我在进行本地 Web 开发和使用 LinkedIn 徽章功能 (profile.js) 时遇到了这个问题。我只999 Request denied在 Chrome 中获得了，所以我只是清除了浏览器缓存和 localStorage，它又开始工作了。
UPDATE - Clearing cache was just a coincidence and the issue came back. LinkedIn is having issues with their badge functionality.
更新 - 清除缓存只是一个巧合，问题又回来了。LinkedIn 的徽章功能存在问题。
I submitted a help thread to their forums. https://www.linkedin.com/help/linkedin/forum/question/714971
我向他们的论坛提交了一个帮助主题。 https://www.linkedin.com/help/linkedin/forum/question/714971
回答by Kaleem
LinkedIn is not supporting the default encoding 'identity' , so if you set the header
LinkedIn 不支持默认编码 'identity' ，因此如果您设置标题
'Accept-Encoding': 'gzip, deflate'
'接受编码'：'gzip，放气'
you should get the response , but you would have to decompress it.
你应该得到响应，但你必须解压缩它。
回答by Muhammad Numan
LinkedIn do not allow direct access. They have blacklisted Heroku/AWS IP address and the only way to access the data is to use their APIs. it can be accessed from the local machine or headless browser
LinkedIn 不允许直接访问。他们已将 Heroku/AWS IP 地址列入黑名单，访问数据的唯一方法是使用他们的 API。它可以从本地机器或无头浏览器访问
