php - Why Share on LinkedIn API return 400 Bad Request? -


i'm trying post linkedin share update via share on linkedin api using php library linkedin-client api. i've authorized user , got access token returned it. use token along share api call. here code:

$linkedinoauth = new happyr\linkedin\linkedin(linkedin_app_id, linkedin_app_secret);  if ($accesstoken) { // assume retrieved session     $linkedinoauth->setaccesstoken($accesstoken);      $postparams = array(         "content" => array(             'description' => "i'm exciting share post using api."         ),         "visibility" => array(             "code" => "connnections-only"         )     );      $result = $linkedinoauth->api(         "v1/people/~/shares",         array("format" => "json"),         "post",         $postparams     ); }

however got 400 bad request error returned api call.

fatal error: uncaught guzzleexception: 400: client error response [url] https://api.linkedin.com/v1/people/~/shares?format=json&oauth2_access_token=xxxxxxx [status code] 400 [reason phrase] bad request thrown in ...\vendor\happyr\linkedin-api-client\src\happyr\linkedin\http\guzzlerequest.php on line 26

what problem?

[update on 2015-04-30 3:00 pm utc]

linkedin-client api uses guzzle internally http requests. tried use guzzlehttp directly without using happyr\linkedin\linkedin->api(), same error , no success.

if ($accesstoken) {     $url = 'https://api.linkedin.com/v1/people/~/shares?format=json&oauth2_access_token=' . $accesstoken;      $client = new guzzlehttp\client();      $response = $client->post($url, array(         'headers' => array(             'content-type' => 'application/json',             'x-li-format'  => 'json'         ),         'json' => array(             'comment' => 'check out developer.linkedin.com!',             'content' => array(                 'description' => 'i\'m exciting share post using api.'             ),             'visibility' => array(                 'code' => 'connections-only'             )         )     )); }

fatal error: uncaught exception 'guzzlehttp\exception\clientexception' message 'client error response [url] https://api.linkedin.com/v1/people/~/shares?format=json&oauth2_access_token=xxxxx [status code] 400 [reason phrase] bad request' in \vendor\guzzlehttp\guzzle\src\exception\requestexception.php:89 stack trace: #0 \vendor\guzzlehttp\guzzle\src\subscriber\httperror.php(33): guzzlehttp\exception\requestexception::create(object(guzzlehttp\message\request), object(guzzlehttp\message\response)) #1 \vendor\guzzlehttp\guzzle\src\event\emitter.php(109): guzzlehttp\subscriber\httperror->oncomplete(object(guzzlehttp\event\completeevent), 'complete') #2 \vendor\guzzlehttp\guzzle\src\requestfsm.php(91): guzzlehttp\event\emitter->emit('complete', object(guz in \vendor\guzzlehttp\guzzle\src\exception\requestexception.php on line 89

[update on 2015-05-05 9:40 utc]

i copied , used both xml , json examples of share on linkedin api page. time, error changed internal server error.

if ($accesstoken) {     $format = 'xml';     $url = 'https://api.linkedin.com/v1/people/~/shares?format='.$format.'&oauth2_access_token=' . $connect->accesstoken;     $postparams = array(         "xml" => "             <share>                 <comment>check out developer.linkedin.com!</comment>                 <content>                     <title>linkedin developer resources</title>                     <description>leverage linkedin's apis maximize engagement</description>                     <submitted-url>https://developer.linkedin.com</submitted-url>                     <submitted-image-url>https://example.com/logo.png</submitted-image-url>                 </content>                 <visibility>                     <code>anyone</code>                 </visibility>             </share>",         "json" => array(             "comment" => "check out developer.linkedin.com!",             "content" => array(                 "title" => "linkedin developers resources",                 "description" => "leverage linkedin's apis maximize engagement",                 "submitted-url" => "https://developer.linkedin.com",                 "submitted-image-url" => "https://example.com/logo.png"             ),             "visibility" => array(                 "code" => "anyone"             )         )     );      $client = new guzzlehttp\client();      if ($format === 'xml') {         $response = $client->post($url, array(             'body' => $postparams['xml']         ));     } else {         $response = $client->post($url, array(             'headers' => array(                 'content-type' => 'application/json',                 'x-li-format'  => 'json'             ),             'json' => $postparams['json']         ));     } }

fatal error: uncaught exception 'guzzlehttp\exception\serverexception' message 'server error response [url] https://api.linkedin.com/v1/people/~/shares?format=json&oauth2_access_token=xxxx [status code] 500 [reason phrase] internal server error'

according the github issue of happyr\linkedin-api-client, updates have been made in 0.5.0 , solved problem. however, linkedin has unclear documentation share api. following information have noted:

  1. the comment field sharing update content. name comment leads confusing.
  2. using field comment, url optional in sharing update content.
  3. the content field means snapshot content of url sharing. describe more clearly, reflects open graph meta tags;
    • content.title overrides <meta property="og:title" content="..." />
    • content.description overrides <meta property="description" content="..." />
    • content.title overrides <meta property="og:title" content="..." />
    • content.submitted-url overrides <meta property="og:url" content="..." />
    • content.submitted-image-url overrides <meta property="og:image" content="..." />
  4. when content field used, field submitted-url required. rest optional. if missing, 400 bad request return.
  5. the urls included in example codes of linkedin share api cause 500 internal server error. should not used testing purpose.

the following correct usage of api using happyr\linkedin-api-client.

(1) happyr\linkedin - using field comment

$linkedinoauth = new happyr\linkedin\linkedin(linkedin_app_id, linkedin_app_secret); // retrieve $accesstoken db or session $linkedinoauth->setaccesstoken($accesstoken);  $postparams = array(     'json' => array(         "comment" => "phplucidframe - simple, lightweight , flexible web application development framework http://phplucidframe.sithukyaw.com",         "visibility" => array(             "code" => "anyone"         )     ) );  $result = $linkedinoauth->post('v1/people/~/shares', $postparams);

(2) happyr\linkedin - using field content

$linkedinoauth = new happyr\linkedin\linkedin(linkedin_app_id, linkedin_app_secret); // retrieve $accesstoken db or session $linkedinoauth->setaccesstoken($accesstoken);  $postparams = array(     'json' => array(         "content" => array(             "title" => "phplucidframe",             "description" => "the simple, lightweight , flexible web application development framework",             "submitted-url" => "http://phplucidframe.sithukyaw.com"         ),         "visibility" => array(             "code" => "anyone"         )     ) );  $result = $linkedinoauth->post('v1/people/~/shares', $postparams);

the following correct usage of api using guzzlehttp.

(3) guzzlehttp - using field comment

// retrieve $accesstoken db or session $url = 'https://api.linkedin.com/v1/people/~/shares?format=json&oauth2_access_token=' . $accesstoken; $client = new guzzlehttp\client(); $response = $client->post($url, array(     "json" => array(         "comment" => "phplucidframe - simple, lightweight , flexible web application development framework http://phplucidframe.sithukyaw.com",         "visibility" => array(             "code" => "anyone"         )     ) ));

(4) guzzlehttp - using field content

// retrieve $accesstoken db or session $url = 'https://api.linkedin.com/v1/people/~/shares?format=json&oauth2_access_token=' . $accesstoken; $client = new guzzlehttp\client(); $response = $client->post($url, array(     "json" => array(         "content" => array(             "title" => "phplucidframe",             "description" => "the simple, lightweight , flexible web application development framework",             "submitted-url" => "http://phplucidframe.sithukyaw.com"         ),         "visibility" => array(             "code" => "anyone"         )     ) ));

the fields comment , content can used together.


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