PHP中的Facebook Graph API出现不一致的错误 - 无法连接到graph.facebook.com端口443：连接超时

Question

我正在我正在研究的网站上集成Facebook登录选项，并且在用php调用Facebook的API时遇到了一些问题。我得到的实际错误如下：

无法连接到graph.facebook.com端口443：连接超时

我已经验证了curl调用的超时值是正确的，我尝试通过SSH直接从服务器的命令提示符检查连接（ping正确，端口似乎是打开的，进程正在监听它等）。然而，使用我在网上找到类似问题的简单卷曲片段，我设法轻松测试它，似乎问题是间歇性/不一致的：有时它完美无瑕地工作，有时它会加载几秒钟因上述错误而失败。

我非常怀疑这个错误是在Facebook的一面，但我无法弄清楚它是什么我做错了。我以前在PHP中使用过Facebook SDK，这是我第一次看到这个错误。

有没有其他人在遇到这个问题并修复它？

快速说明：这是我第一次在基于Symfony的项目中使用Facebook - 在这种情况下不要认为它是相关的，而是为了以防万一而将其丢弃。

相关摘要：

$fb = new FacebookFacebook(['app_id' => '[withheld]',
                                      'app_secret' => '[withheld]',
                                      'default_graph_version' => 'v2.10',]);
$fb->setDefaultAccessToken($accessToken); # Access token obtained from Facebook Login in JS, passed in post data.

try {
    $basic_info_response = $fb->get('/me?fields=id,first_name,last_name,email,website');

    if ($with_picture)
        $profile_picture_response = $fb->get('/me/picture?width=720&height=720');

    if ($with_friends)
        $friends_response = $fb->get('/me/friends');
}
catch(FacebookExceptionsFacebookResponseException $e) {
    echo 'Graph returned an error: ' . $e->getMessage();
    exit;
}
catch(FacebookExceptionsFacebookSDKException $e) {
    echo 'Facebook SDK returned an error: ' . $e->getMessage();
    exit;
}

在这段代码中，它在任何$ fb-> get（）调用中都失败 - 并不总是相同的，有时在第一个，有时在第一个，有时在朋友一个。

[更新]

大约90％的电话都出现了错误。我尝试通过SSH（curl -v graph.facebook.com）直接在服务器上进行curl调用，得到以下两个结果：

* Rebuilt URL to: graph.facebook.com/
*   Trying 31.13.91.2...
* TCP_NODELAY set
*   Trying 2a03:2880:f01b:1:face:b00c:0:1...
* TCP_NODELAY set
* Immediate connect fail for 2a03:2880:f01b:1:face:b00c:0:1: Network is unreachable
* Connected to graph.facebook.com (31.13.91.2) port 80 (#0)
> GET / HTTP/1.1
> Host: graph.facebook.com
> User-Agent: curl/7.50.2
> Accept: */*
> 
< HTTP/1.1 400 Bad Request
< WWW-Authenticate: OAuth "Facebook Platform" "invalid_request" "Unsupported get request. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api"
< Access-Control-Allow-Origin: *
< Pragma: no-cache
< Cache-Control: no-store
< x-fb-rev: 3274377
< Content-Type: application/json; charset=UTF-8
< x-fb-trace-id: A2OYZzFP3v8
< facebook-api-version: v2.4
< Expires: Sat, 01 Jan 2000 00:00:00 GMT
< Vary: Accept-Encoding
< X-FB-Debug: z9FEtq3Rlh8LyFn6pOIBZ5ZMCX+TY1jUD7iZ7ZRZ8/YGAsi035TbCP3qdBzqxDryvjJhKoKxnbAdvcxY/7r3Vg==
< Date: Mon, 04 Sep 2017 19:51:40 GMT
< Transfer-Encoding: chunked
< Connection: keep-alive
< 
* Curl_http_done: called premature == 0
* Connection #0 to host graph.facebook.com left intact

和

* Rebuilt URL to: graph.facebook.com/
*   Trying 31.13.91.2...
* TCP_NODELAY set
* Connected to graph.facebook.com (31.13.91.2) port 80 (#0)
> GET / HTTP/1.1
> Host: graph.facebook.com
> User-Agent: curl/7.50.2
> Accept: */*
> 
< HTTP/1.1 400 Bad Request
< WWW-Authenticate: OAuth "Facebook Platform" "invalid_request" "Unsupported get request. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api"
< Access-Control-Allow-Origin: *
< Pragma: no-cache
< Cache-Control: no-store
< x-fb-rev: 3274377
< Content-Type: application/json; charset=UTF-8
< x-fb-trace-id: BrIDaH8D8D5
< facebook-api-version: v2.4
< Expires: Sat, 01 Jan 2000 00:00:00 GMT
< Vary: Accept-Encoding
< X-FB-Debug: tYvsf7Nn2PVnHFkV40UUddjQGKzPl8XKfdNeiqu1CXZck5WuUUlcG9hoCAZQrOX93uS19m2JpAEu9DJ/YhSIeg==
< Date: Mon, 04 Sep 2017 19:54:54 GMT
< Transfer-Encoding: chunked
< Connection: keep-alive
< 
* Curl_http_done: called premature == 0
* Connection #0 to host graph.facebook.com left intact

有没有人对此问题有任何更多信息或可能的解释？

Answer 1

另一答案

Answer 2

另一答案

PHP中的Facebook Graph API出现不一致的错误 - 无法连接到graph.facebook.com端口443：连接超时

Config.php