Using Guzzle 6 to consume an API

[Daniel2904]

Hello all

I’m a bit new to API’s, so please excuse me if this is a silly question.

I need to create an API server and client.
On recommendation from a friend, I am using apigility to create the server.

I’m trying to get an access code, and here are the parameters needed.
The page that gives the access code is at: /oauth/receivecode
It takes these variables in the URL: response_type=code&client_id=testclient&redirect_uri=/oauth/receivecode&state=xyz
I also need to post a variable called: authorized with value yes
I also need to set two headers: ‘accept’ => ‘application/json’ , ‘Content-Type’ => ‘application/json’

It seems to be working fine, so now I need to consume it.
On recommendation from another friend, I am using Guzzle 6 for the client side.
Here is the code:

    $s_base_url = 'http://www.apigility.loc';
    $s_client = 'testclient';
    $s_redirect_uri = '/oauth/receivecode';

    $o_client = new Client(['base_uri' => $s_base_url]);

    $s_uri = '/oauth/authorize';
    $s_response_type = 'code';

    $s_get_string = $s_uri . '?response_type=' . $s_response_type . '&client_id=' . $s_client . '&redirect_uri=' . $s_redirect_uri . '&state=xyz';

    $a_header = array('accept' => 'application/json' , 'Content-Type' => 'application/json');

    $a_form_data = array('authorized' => 'yes');

    $a_params = array('headers' => $a_header , 'form_params' => $a_form_data);

try {
    $o_response = $o_client -> post($s_get_string , $a_params);
}
catch (GuzzleHttp\Exception\ClientException $e){
    var_dump($e);
}

This does not work.
It returns a 400 Bad Request, with no real error message, so I’m stumped as to what to do.
I’ve also tried using the multipart option, but I can’t get that to work either.

Can anyone help?

Thanks in advance
Daniel

[Dormilich]

I’d assume the URL you try is incorrect. I’ve done a bit of OAuth in the past and it was never as simple as just appending the oauth path somewhere. (see also https://www.apigility.org/documentation/auth/authentication-oauth2 for the apigility docs on OAuth).

if you’re starting with using a public API, use one without authentication at first.

[oddz]

Your environment might not be set-up to pass the required headers. I’ve had issues in the past before with that locally especially if you’re using fpm.

[Daniel2904]

Hi Dormilich

Thanks for the reply buddy.
It is appreciated.

The URL is correct thought.
It’s on my local machine.
.loc is how I setup my local environment.
Also, if I leave out the form data parameters, everything works, but no code is returned (only the client id that I passed, is returned back).

Have you got any other thoughts?

[Daniel2904]

Hi oddz

Thanks for your reply.
I thought about what you are saying.
When I leave out the form parameters, and only send the headers, the code ‘works’ but no code is returned.
So the headers are definitely going through.
Also, when I leave out the headers, a 406 Bad Request is returned.

What is fpm?

[Dormilich]

then the question comes up if you set up Apigility correctly.

FPM - FastCGI Process Manager

[Daniel2904]

I believe that I setup my APIgility correctly.
I watched the tutorials and did some reading, and it’s fairly simple to setup.
I added the authentication (oauth).
My oauth2 route is correct.
I believe that my MySQL tables are correct (found the create statements in a tutorial).
The authentication type is set to oauth2 in my API.
At this stage in the code above, I haven’t reached a method, but I checked that too: authorization is setup, headers are setup.
I’ve been through everything on the APIgility side and can’t see anything incorrect.

Not familiar with FMP, so I don’t think that I’m using that.

Thanks for your help so far
It is appreciated.