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@rakyll /main.go Secret
Last active Jun 18, 2018

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package main
import (
const mainJS = `console.log("hello world");`
const indexHTML = `<html>
<script src="/main.js"></script>
func main() {
http.HandleFunc("/main.js", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, mainJS)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/" {
http.NotFound(w, r)
pusher, ok := w.(http.Pusher)
if ok { // Push is supported. Try pushing rather than waiting for the browser.
if err := pusher.Push("/main.js", nil); err != nil {
log.Printf("Failed to push: %v", err)
fmt.Fprintf(w, indexHTML)
// Run crypto/tls/generate_cert.go to generate cert.pem and key.pem.
// See
log.Fatal(http.ListenAndServeTLS(":7072", "cert.pem", "key.pem", nil))

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HyeJong commented Nov 30, 2016

Thanks a lot!


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vsouza commented Dec 13, 2016



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peeyushsrj commented Feb 25, 2017



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dreambo8563 commented Mar 30, 2018

I run the code locally, but I didn't see "push" in my console


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m90 commented Jun 18, 2018

As of today (18.06.2018), this does not seem to work in Chrome (v67) when it does work in Firefox (v60).

Strangely the .(http.Pusher) assertion succeeds and the .Push calls don't return errors, but Chrome will simply request each resource on a new request. Firefox only performs a single request.

Strangely still seems to work in all browsers.

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