HTTP Status Code: 401 in GCMDemo

Question

Reference:http://developer.android.com/google/gcm/demo.html

Server 401 when trying to send a message to my android device.

HTTP Status 500 - HTTP Sta         


        

Answer 1

You should take a look at the GCM docs where it explains the GCM response: http://developer.android.com/google/gcm/gcm.html#response and troubleshooting the 401 error code: http://developer.android.com/google/gcm/gcm.html#auth_error

Description from the docs:

Authentication Error The sender account that you're trying to use to send a message couldn't be authenticated. Possible causes are:

Authorization header missing or with invalid syntax.

Invalid project number sent as key.

Key valid but with GCM service disabled.

Request originated from a server not whitelisted in the Server Key IPs.

So I would check to make sure that you are setting you authorization header properly and that you Google Project number is properly setup with GCM and accepting your servers IP.