Wednesday, November 20, 2013

How to use ZF2's Curl Http Adapter with Header information

Just sharing some of my painful WTF experiences using ZF2's Curl Http client adapter so you wont have to deal with my headaches.

Basically I am trying to send a CURL_HTTPHEADER with these params.
This is what it should look like straight php:

$c = curl_init('http://url');
curl_setopt($c, CURLOPT_POST, 1);
curl_setopt($c, CURLOPT_POSTFIELDS, $data);
curl_setopt($c, CURLOPT_HTTPHEADER, array(
    'Content-type: application/json',
    'Authorization: Bearer 1jo41324knj23o'
));
Simple enough right? Well I was assuming the same thing using ZF2's Curl Adapter:
$client = new Client('http://url');
$client->setMethod('post');

$adapter = new Curl()
$adapter->setCurlOption(CURLOPT_POST, 1);
$adapter->setCurlOption(CURLOPT_POSTFIELDS, $data);
$adapter->setCurlOption(CURLOPT_HTTPHEADER, array(
    'Content-type: application/json',
    'Authorization: Bearer 1jo41324knj23o'
));
Well the thing is this will not work because the headers and data are being set exclusively by write() in the client object as you will see in the source:
// inside Curl::write()
// line 374 Curl.php
curl_setopt($this->curl, CURLOPT_HTTPHEADER, $curlHeaders);

// line 380 Curl.php
if ($method == 'POST') {
    curl_setopt($this->curl, CURLOPT_POSTFIELDS, $body);
}

// line 398 Curl.php
if (isset($this->config['curloptions'])) ...
    foreach ((array) $this->config['curloptions'] as $k => $v) ...
 
Notice at line 398 that this is where the remaining curl parameters gets set. This means that CURLOPT_HTTPHEADER and CURLOPT_POSTFIELDS have already been defined so our usage from above will not work (Maybe there is a CURL flag to overwrite this, I just don't know at the moment). So how do you make this work? You have to pass your definitions in the Client object:
$client = new Client('http://url');
$client->setMethod('post');
$client->setRawBody($data);
$client->setHeaders(array(
    'Content-Type: application/json',
    'Authorization: Bearer 1jo41324knj23o',
));
$client->setAdapter(new Curl());
$client->send();
Now the write() method will pull from these params when assembled

36 comments:

Marco Langebeeke said...

Thanks so much for sharing.. had a lot of WTF moments myself before I found your post! :)

co wendy said...
This comment has been removed by a blog administrator.
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