enabling CORS for a golang REST app

[gmuth...@gmail.com]

I have enabled CORS for the golang REST app deployed on GAE. I don't use cloud endpoints. Its a simple app that exposes a GET and a POST api and works fine on POSTMAN. However cannot use any js client to POST because of CORS error. 

I have enabled CORS as below:

httpServer = &http.Server{

Addr: ":8080",

Handler: handlers.CORS(

handlers.AllowedOrigins([]string{"*"}),

handlers.AllowedHeaders([]string{"Authorization", "Access-Control-Allow-Headers"}),

handlers.AllowedMethods([]string{"GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS"}))(router),

ReadTimeout:    timeout,

WriteTimeout:   timeout,

MaxHeaderBytes: 1 << 20,

}

}

Any pointers will help.

[gmuth...@gmail.com]

Update:  I'm using the GAE flex engine and Gorilla Mux as my http middleware.