cURL 'Content-length required' error... 3 days of searching, no luck

curl, google-calendar-api, php

Solution

I think you need to set `CURLOPT_HTTPHEADER`. You can try to pass data as a json string as stated below.

$post_data = array(
    "end" => array("dateTime" => "2013-14-11T10:40:00.000-07:00"),  
    "start" => array("dateTime" => "2013-14-11T10:00:00.000-07:00"),  
    "summary" => "my_summary",
    "description" => "my_description"
);

$post_data = json_encode($post_data);
curl_setopt($ch2, CURLOPT_HTTPHEADER, array(  
   'Content-Type: application/json',  
   'Content-Length: ' . strlen($post_data),)  
 );

Problem

Before you ask: I have already checked every similar question that already had an answer, and none of the proposed solutions work. So I'm hoping someone may be able to notice a mistake in my code. When submitting a cURL post to Google, I am returned with a 411 error, "POST requests require a Content-length header" ``` //Info required to authenticate $URL = "https://www.google.com/accounts/ClientLogin"; $POST = http_build_query(array( 'Email' => 'XXXXXXX@gmail.com', 'Passwd' => 'XXXXXXXXXXXXXXX', 'source' => 'primary', 'service' => 'cl' )); $ch = curl_init( $URL ); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $POST); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); curl_setopt($ch, CURLOPT_HEADER, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $response = curl_exec($ch); //returns SID=<sid code>nLSID=<lsid code>nAuth=<auth code> or ERROR=<message> if ( curl_errno($ch) ) die( 'Error contacting server' ); //Successful auth results in http code 200 if ( curl_getinfo($ch, CURLINFO_HTTP_CODE) != 200 ) die( 'Failed to authenticate' ); //Extract auth code - Authorization: GoogleLogin auth=yourAuthToken $auth_code = substr($response, strpos($response, 'Auth=')+5); //We're done here curl_close($ch); $url = "https://www.googleapis.com/calendar/v3/calendars/".urlencode('XXXXXXXXXXXXX@developer.gserviceaccount.com')."/events?sendNotifications=true&pp=1&key=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXx"; $post_data = http_build_query(array( "end" => array("dateTime" => "2013-14-11T10:40:00.000-07:00"), "start" => array("dateTime" => "2013-14-11T10:00:00.000-07:00"), "summary" => "my_summary", "description" => "my_description" )); $headers = array( 'Authorization: GoogleLogin auth='.$auth_code.'', 'Content-Type: application/json' ); $ch2 = curl_init(); curl_setopt($ch2, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch2, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch2, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch2, CURLOPT_POSTFIELDS, $post_data); $output = curl_exec($ch2); curl_close($ch2); echo '<pre>'.print_r($output).'</pre>'; ``` Things I have tried: -Adding the 'Content-length: '.strlen($post_data) -Content-type of 'x-www-form-urlencoded' -using a very simply json string for post_data so that I didn't use http_build_query -Trying to make it send as a PUT instead of POST -And a few other things over the course of the last few days that I can't quite recall right now Intent: To add an event to only MY calendar using only PHP with no authentication steps required by the user. This must be able to run all within a php function, asynchronously (called via AJAX) NOTE: Not using Wordpress or any other CMS -Kyle

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