Guzzle POST request always returns 400 Bad Request - laravel

Question

I have been trying to make a simple POST request to an endpoint with a payload using Guzzle but I always get 400 Bad Request returned.
I can make the same request in Postman and it works. Also, If I make the request using cURL it works.
Can anyone tell from my code what I am doing wrong?
Here's the original cURL request:
curl "https://endpoint.com/" \
-H "Authorization: ApiKey pp_test_*********" \
--data '{
"shipping_address": {
"recipient_name": "Deon Botha",
"address_line_1": "Eastcastle House",
"address_line_2": "27-28 Eastcastle Street",
"city": "London",
"county_state": "Greater London",
"postcode": "W1W 8DH",
"country_code": "GBR"
},
"customer_email": "email£example.com",
"customer_phone": "123455677",
"customer_payment": {
"amount": 29.99,
"currency": "USD"
},
"jobs": [{
"assets": ["http://psps.s3.amazonaws.com/sdk_static/1.jpg"],
"template_id": "i6_case"
}, {
"assets": ["http://psps.s3.amazonaws.com/sdk_static/2.jpg"],
"template_id": "a1_poster"
}]
}'
And the Postman PHPHttp Request which works too.
<?php
$request = new HttpRequest();
$request->setUrl('https://endpoint.com/');
$request->setMethod(HTTP_METH_POST);
$request->setHeaders(array(
'cache-control' => 'no-cache',
'Connection' => 'keep-alive',
'Content-Length' => '678',
'Accept-Encoding' => 'gzip, deflate',
'Host' => 'api.kite.ly',
'Cache-Control' => 'no-cache',
'Accept' => '*/*',
'User-Agent' => 'PostmanRuntime/7.19.0',
'Content-Type' => 'text/plain',
'Authorization' => 'ApiKey pk_test_*******'
));
$request->setBody(' {
"shipping_address": {
"recipient_name": "Deon Botha",
"address_line_1": "Eastcastle House",
"address_line_2": "27-28 Eastcastle Street",
"city": "London",
"county_state": "Greater London",
"postcode": "W1W 8DH",
"country_code": "GBR"
},
"customer_email": "email#example.com",
"customer_phone": "12345667",
"customer_payment": {
"amount": 29.99,
"currency": "USD"
},
"jobs": [{
"assets": ["http://psps.s3.amazonaws.com/sdk_static/1.jpg"],
"template_id": "i6_case"
}, {
"assets": ["http://psps.s3.amazonaws.com/sdk_static/2.jpg"],
"template_id": "a1_poster"
}]
}');
try {
$response = $request->send();
echo $response->getBody();
} catch (HttpException $ex) {
echo $ex;
}
But when I try to send make the same request with Guzzle it fails with 400 Bad Request and I can't understand why.
$data = [
"shipping_address" => [
"recipient_name" => "Deon Botha",
"address_line_1" => "Eastcastle House",
"address_line_2" => "27-28 Eastcastle Street",
"city" => "London",
"county_state" => "Greater London",
"postcode" => "W1W 8DH",
"country_code" => "GBR"
],
"customer_email" => "example#email.com",
"customer_phone" => "[phone]",
"customer_payment" => [
"amount" => 29.99,
"currency" => "USD"
],
"jobs" =>
[
"assets" => ["http://psps.s3.amazonaws.com/sdk_static/1.jpg"],
"template_id" => "i6_case"
]
];
$options = json_encode($data);
$response = $client->request('POST', config('services.endpoint.com'),
['headers' => ["Authorization" => config('services.endpoint.com.public_key'),
'Content-Type' => "application/json"], $options]);
If anyone can help me to debug this I'd be really grateful.

Answer 1

If you're using Guzzle 6 (and you probably should be), you're actually constructing in a more complex way than you need to, such that the endpoint is not receiving the expected JSON. Try this instead:
$client = new Client([
'base_uri' => 'https://my.endpoint.com/api',
'headers' => [
'Accept' => 'application/json',
...other headers...
]
]);
$data = [...your big slab of data...];
$response = $client->post('/kitely/path', ['json' => $data]);
// a string containing the results, which will depend on the endpoint
// the Accept header says we will accept json if it is available
// then we can use json_decode on the result
$result = $response->getBody()->getContents();

Answer 2

I'm using Unirest to make any sort of HTTP requests. I tried using Guzzle, but was facing the same issue as you are.
So what I did was install Unirest in my project, all the process are given in details in their documentation. This works perfectly fine for me.