Registration in Notification Hub with PHP Backend - php

Question

For user requeriments the backend must be PHP and the app client is in Ionic 2. Based on:
https://msdn.microsoft.com/en-us/library/azure/dn223265.aspx
https://github.com/Azure/azure-notificationhubs-samples/tree/master/notificationhubs-rest-php
https://github.com/webwarejp/notificationhubs-rest-php
Create Registration Notification Hub Azure PHP Important
I created this method in php API:
$uri = $this->endpoint . $this->hubPath . "/registrations".NotificationHub::API_VERSION;
/* print($uri); */
$ch = curl_init($uri);
$token = $this->generateSasToken($uri);
$headers = [
'Authorization: '. $token,
'Content-Type: '."application/atom+xml;type=entry;charset=utf-8",
'x-ms-version: 2015-01',
'Content-Length: 0'
];
$body = $this->getXmlAndroid($registrationId, $tag);
print_r($body);
curl_setopt_array($ch, array(
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_RETURNTRANSFER => TRUE,
CURLOPT_SSL_VERIFYPEER => FALSE,
CURLOPT_HTTPHEADER => $headers,
CURLOPT_POSTFIELDS => $body
));
$response = curl_exec($ch);
// Check for errors
if($response === FALSE){
print_r(curl_error($ch));
throw new Exception(curl_error($ch));
}
$info = curl_getinfo($ch);
print_r($info);
curl_close($ch);
The getXmlAndroid method is simple return xml format with GCM ID
private function getXmlAndroid($registrationId){
return '<?xml version="1.0" encoding="utf-8"?>
<entry xmlns="http://www.w3.org/2005/Atom">
<content type="application/xml">
<GcmRegistrationDescription xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/netservices/2010/10/servicebus/connect">
<GcmRegistrationId>'.$registrationId.'</GcmRegistrationId>
</GcmRegistrationDescription>
</content>
</entry>';
}
I get the GcmRegistrationId with this function in Ionic 2 app.
import { Push, PushObject, PushOptions } from '#ionic-native/push';
....
const options: PushOptions = {
android: { senderID: 'MyIDFirebaseProject'},
ios: { alert: 'true', badge: true, sound: 'false'},
windows: {}
};
pushObject.on('registration').subscribe((registration: any) => {
console.log(registration.registrationId);
});
The problem is always request to Registration method in Notification API return
[http_code] => 400
Where 400 means the "Invalid request body. The registration could not be created because the request was malformed.". I don't understand why this happen.

Answer 1

Why you send Content-Length: 0 header? It may cause a problem.