Question: What is FCM Messages?
Full form of FCM is Firebase Cloud Messaging.
FCM is a cross-platform messaging solution that lets you reliably deliver messages to android and IOS devices at no cost.
You can notify a client app that new message has been arrived.
Question: How does FCM works?
App server interacts with FCM (HTTP or XMPP protocol) and a client app. You can compose and send messages.
FCM built on Firebase Cloud Messaging.
Question: What is FCM Server?
FCM servers take messages from an app server and send to cient app.
FCM connection servers provided by Google.
Question: What is App Server?
App Server sends data to a client app (via the chosen FCM connection server) using XMPP or HTTP protocol.
Question: What are role of App Server?
- Communicate with your client
- Send properly formatted requests to the FCM connection server
- Securely store the Server key and client registration tokens
Question:How to send notification to android/IOS device with FCM server?
$jsonData='{
"to": "dhkC5_jTnck:APA91bF7L_KN7GFOPMiVsykjMGqydlftItfapC4Va63hRBuhFCrRKMdUonqhO1qjKT5_OYPMRAZFMA2UDVA1spAw9SpCsLE7B05vGtNttvuykIdxL7jKWWvJkA51T98O8ZZkubhXwQyRx",
"notification": {
"body": "New Gr sent you a message",
"title": "domain.com ",
"icon": "main_ve_logo",
"click_action": "com.domain.fcm"
},
"data": {
"type": "message",
"avatar": "http://img.domain.com/upload/default.jpg",
"message_id": 1
}
}';
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "https://fcm.googleapis.com/fcm/send",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode($fields),
CURLOPT_HTTPHEADER => array(
"authorization: key=FCM_SERVER_KEY",
"cache-control: no-cache",
"content-type: application/json"
),
));
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
