To get this to work in Services 3.x in D6, I had to enable: application/x-www-form-urlencoded in server->request parsing. Otherwise I would get:
The requested URL returned error: 406

I am not clear on how the request url is constructed in the example:

$request_url = 'http://your-drupal/rest_server_endpoint/user/login';

Is rest_server_endpoint a canonical name or a placeholder? In the first case, can someone point met to the documentation, in the second case. how and where is set?

if i have a image filed how i can create node content with image?

There are drupal_http_request function , why do you use cURL?

wow.. very nice post.
Thanks.

Trying to get this sample, the script is returning a 302 error in $http_code var and I don't know what's the problem.
Anybody got the same problem or knows how to resolve it?
Thanks.
Regards

I found something really strange.

I have some term references in my custom node so, when I build my node_data I use for instance
$node_data['field_something[und]'] = array(array("tid"=>294));
where field_something is a custom term reference.
I can create a node with term references, using curl. It is working well.

Except for the well known "field_tags", when the default widget for autocomplete is activated.

If I use Autocomplete Deluxe widget for field_tags, the service with curl is working !

I am really surprised of this behavior, should I post it in issues ? and where ? (service ? core ?)

I could not get the above code to work, so I went through and made some revisions based on other Documentation snippets and got this to work:

/*
 * Server REST - user.login
 */

// REST Server URL
$request_url = 'http://your-drupal/rest_server_endpoint/user/login.json';

// User data
$user_data = array(
  'username' => 'testuser',
  'password' => '1password',
);

// cURL
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $request_url);
curl_setopt($curl, CURLOPT_POST, 1); // Do a regular HTTP POST
curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($user_data)); // Set POST data
curl_setopt($curl, CURLOPT_HEADER, FALSE);  // Ask to not return Header
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl, CURLOPT_FAILONERROR, TRUE);

$response = curl_exec($curl);
$http_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);

// Check if login was successful
if ($http_code == 200) {
  // Convert json response as array
  $logged_user = json_decode($response);
}
else {
  // Get error msg
  $http_message = curl_error($curl);
  die($http_message);
}

/*
 * Server REST - node.create
 */

// REST Server URL
$request_url = 'http://your-drupal/rest_server_endpoint/node';

// Node data
$node = (object) NULL;
$node->title = 'A node created with services 3.x and REST server';
$node->type = 'page';
$node->body['und'][0]['value'] = '<p>Body</p>';
$node->path = '';
$node_data = (array) $node;

$node_data = json_encode($node_data);

// Define cookie session
$cookie_session = $logged_user->session_name . '=' . $logged_user->sessid;

// cURL
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $request_url);
curl_setopt($curl, CURLOPT_POST, TRUE); // Do a regular HTTP POST
curl_setopt($curl, CURLOPT_HTTPHEADER, array('Accept: application/json', 'Content-Type: application/json')); // Accept
curl_setopt($curl, CURLOPT_POSTFIELDS, $node_data); // Set POST data
curl_setopt($curl, CURLOPT_HEADER, TRUE);  // Ask to not return Header
curl_setopt($curl, CURLOPT_COOKIE, $cookie_session); // use the previously saved session
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl, CURLOPT_FAILONERROR, FALSE); //True in prod, false for debugging

$response = curl_exec($curl);

$http_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);

// Check if login was successful
if ($http_code == 200) {
  // Convert json response as array
  $node = json_decode($response);
}
else {
  // Get error msg
  $http_message = curl_error($curl);
  die($http_message);
}

print_r($node);

Nice script, however I want to post tags and category along with node data how can I send it? what parameter should I add in node data array?

$node_data = array(
  'title' => 'A node created with services 3.x and REST server',
  'type' => 'page',
  'body[und][0][value]' => '<p>Body</p>',
);

I believe this sample is flawed as there is no need to get csrf token two times. One time is enough after user login. Also, csrf token needs to be obtained in the same curl session as login, as Drupal Services returns empty otherwise...

PS: I also fixed the DrupalREST class here https://github.com/RandallKent/DrupalREST.PHP/issues/2

<pre>
	<?php
		
		// LOGIN AND GET CSRF TOKEN
		
		/*
			* Server REST - user.login
		*/
		
		// REST Server URL
		$request_url = 'http://mysite....com/server/user/login.json';
		
		// User data
		$user_data = array(
		'username' => 'xxxx',
		'password' => 'xxxx',
		);
		$user_data = http_build_query($user_data);
		
		// cURL
		$curl = curl_init($request_url);
		curl_setopt($curl, CURLOPT_HTTPHEADER, array('Accept: application/json')); // Accept JSON response
		curl_setopt($curl, CURLOPT_POST, 1); // Do a regular HTTP POST
		curl_setopt($curl, CURLOPT_POSTFIELDS, $user_data); // Set POST data
		curl_setopt($curl, CURLOPT_HEADER, FALSE);  // Ask to not return Header
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
		curl_setopt($curl, CURLOPT_FAILONERROR, TRUE);
		
		
		$response = curl_exec($curl);
		//print_r($response);
		$http_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
		//print "<br>".$http_code."</br>";
		// Check if login was successful
		if ($http_code == 200) {
			// Convert json response as array
			$logged_user = json_decode($response);
			//print_r($logged_user);
			
		}
		else {
			// Get error msg
			$http_message = curl_error($curl);
			die($http_message);
		}		

		
		// Define cookie session
		$cookie_session = $logged_user->session_name . '=' . $logged_user->sessid;
		
		//GET CSRF TOKEN
		curl_setopt_array($curl, array(
		CURLOPT_RETURNTRANSFER => 1,
		CURLOPT_URL => 'http://mysite....com/services/session/token',
		));
		curl_setopt($curl, CURLOPT_COOKIE, "$cookie_session"); 
		// $csrf_token = curl_exec($curl);
		//print_r($csrf_token);
		
		$ret = new stdClass;
		
		$ret->response = curl_exec($curl);
		$ret->error    = curl_error($curl);
		$ret->info     = curl_getinfo($curl);
		
		
		//print_r($ret->response);
		$csrf_token = $ret->response;


		/*
			* Server REST - node.create
		*/
		
		// REST Server URL
		$request_url = 'http://mysite....com/server/node';
		
		// Node data
		$node_data = array(
		'title' => 'A node created with services 3.x and REST server',
		'type' => 'page',
		'body[und][0][value]' => '<p>Body</p>',
		);
		$node_data = http_build_query($node_data);

		// cURL
		$curl = curl_init($request_url);
		curl_setopt($curl, CURLOPT_HTTPHEADER, array('Accept: application/json', 'X-CSRF-Token: ' .$csrf_token)); // Accept JSON response
		curl_setopt($curl, CURLOPT_POST, 1); // Do a regular HTTP POST
		curl_setopt($curl, CURLOPT_POSTFIELDS, $node_data); // Set POST data
		curl_setopt($curl, CURLOPT_HEADER, FALSE);  // Ask to not return Header
		curl_setopt($curl, CURLOPT_COOKIE, "$cookie_session"); // use the previously saved session
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
		curl_setopt($curl, CURLOPT_FAILONERROR, TRUE);
		
		$response = curl_exec($curl);
		print "<br><br>";
		print_r($response);
		$http_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
		
		// Check if login was successful
		if ($http_code == 200) {
			// Convert json response as array
			$node = json_decode($response);
		}
		else {
			// Get error msg
			$http_message = curl_error($curl);
			die($http_message);
		}
		
		print_r($node);
		
		
	?>
</pre>

i am using same code only the url and rest api url is changed, but it gives 401 anauthorized aceess error::
it print csrf-token fine and also login into the remote site fine, but when i want to create a node throught curl then it gives 401...
can anyone give me any idea why this gives 401 error,,
when i try in poster it works fine,

thanks for this example , I have used the same example to fetch user friends from drupal website but its returning me 404 , Please help. I am getting the logged user session id and name but when I hit using the same then I get 404

$post_data = array('uid' => 'x');
$post_data = http_build_query($post_data);

// cURL
$curl = curl_init($request_url);

curl_setopt($curl, CURLOPT_HTTPHEADER, array("Accept: application/json", $csrf_header)); // Accept JSON response
curl_setopt($curl, CURLOPT_POST, true); 
curl_setopt($curl, CURLOPT_POSTFIELDS, $post_data);

curl_setopt($curl, CURLOPT_COOKIE, $cookie_session); // use the previously saved session
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl, CURLOPT_FAILONERROR, TRUE);

$response = curl_exec($curl);
$http_code = curl_getinfo($curl, CURLINFO_HTTP_CODE);

// Check if login was successful
if ($http_code == 200) {
  $node = json_decode($response);
}
else {
  $http_message = curl_error($curl);
  
  $info = curl_getinfo($curl);
   print_r($info);
  echo "<b>Error I am getting</b><br /><br />";
  echo $http_message; 
  }

Please help.

thanks,