Having CORS enabled on the app , but still throws an exception.

[Gokul Muthuswamy]

I have simple golang REST api app on GAE.  I'm using a gorilla mux router and 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,

}

}

Checked it on local deploys and its works well.  However on GAE it still returns a CORS error as below:

No access control origin header is present.

[Jun (Cloud Platform Support)]

Hello Gokul,

Google Groups is meant for general product discussions and not for technical support.

 

It is recommended you open a Public Issue Tracker report with more information such as your project-id, app.yaml/appengine-web.xml configuration file, information about the timestamps of when this issue occurred.