<p>would there be a reason to listen for signals on both <code>w.(http.CloseNotifier).CloseNotify()</code> and <code>r.Context().Done()</code> like this?</p>
<pre><code>func handle(w http.ResponseWriter, r *http.Request) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
go func() {
select {
case <-w.(http.CloseNotifier).CloseNotify():
log.Print("writer closed")
case <-r.Context().Done():
log.Print("request canceled")
}
cancel()
return
}()
// ...
}
</code></pre>
<p>if not both, then will either one do? which one is better and why?</p>
<hr/>**评论：**<br/><br/>tv64738: <pre><p>Use <code>Request.Context</code> not <code>CloseNotifier</code>, these days.</p></pre>
