Gcm Push Server Side, Which Api Key To Use?

I'm a bit confused. I have a GCM PHP server side app server that uses a key from Google Developer Console. I can create Android key as per the instructions given in getting started

Solution 1:

Solved

I was concentrating on Android or Server API_KEY but I actually had to use browser key.

Moreover, to test initially I removed all IP addresses from white listing to make sure that's not the factor playing it's role.

Now I have the push service working with above code using Browser API Key and IP restriction in place for white listing.

Cheers :)

Solution 2:

Be sure you include the 'Authorization' header with value 'key=APIKEY'.

ApiKey can be either server key or browser key.

If you define IP whitelist for server key, you can only send messages from the specified IPs.