上传图片时请求超时

Am developing web application using golang for web server and frontend with reactJS and nodeJS to serve the frontend. I have two issue while uploading images that are big (currently am testing with 2.9 mb) the first one am getting is a timeout within 10 second saying request timeout at the browser side but the upload is successfully uploaded to the database. The second issue is the request is being duplicated two times and as a result the request is saved to the database two times. I have searched on stack overflow but it doesn't seem to work.

First Option

Here is the code using ajax call i.e. fetch from isomorphic-fetch

Following suggestion to implement a timeout wrapper at https://github.com/github/fetch/issues/175

static addEvent(events){
    let config = {
        method: 'POST',
        body: events
    };

    function timeout(ms, promise) {
        return new Promise(function(resolve, reject) {
            setTimeout(function() {

                reject(new Error("timeout"))
            }, ms)
            promise.then(resolve, reject)
        })
    }

    return timeout(120000,fetch(`${SERVER_HOSTNAME}:${SERVER_PORT}/event`, config))
    .then(function(response){
        if(response.status >= 400){
            return {
                "error":"Bad Response from Server"
            };
        }else if(response.ok){
            browserHistory.push({
                pathname: '/events'
            });
        }
    });
}

The request timeout still occurs within 10 seconds.

Second Option

I have tried a different node module for the ajax call i.e. axios since it has a timeout option but this also didn't fix the timeout issue.

Third Option

I tried to set read timeout and write timeout on the server side similiar to https://blog.cloudflare.com/the-complete-guide-to-golang-net-http-timeouts/

server := &http.Server{
    Addr:         ":9292",
    Handler:      router,
    ReadTimeout:  180 * time.Second,
    WriteTimeout: 180 * time.Second,
}

Again am getting request timeout at browser side within 10 seconds.

what shall I do to fix or point me if i made a mistake ?