what does it means "heavy load"? if not in "heavy load", it can work ? On
the other hand, do you want the tcp connections or the http req numbers?
>From the go package, it appears that getting the basic tcp connections in
http.server is impossible.
在 2019年2月12日星期二 UTC+8下午10:37:52，jose.albe...@gmail.com写道：
>
> I was trying to get current HTTP connections in HTTP.Server. Internally
> transport tracks it under connPerHostCount. However, I don't see a way of
> getting this value.
>
> I tried this:
>
> type HTTPRequestMetrics struct {
> activeConnections int64
> next http.Handler
> }
>
>
> func HTTPRequestMetricsHandler(h http.Handler) *HTTPRequestMetrics {
> return &HTTPRequestMetrics{next: h}
> }
>
>
> func (h *HTTPRequestMetrics) ServeHTTP(w http.ResponseWriter, r *http.
> Request) {
> atomic.AddInt64(&h.activeConnections, 1)
> defer atomic.AddInt64(&h.activeConnections, -1)
>
>
> h.next.ServeHTTP(w, r)
> }
>
>
> But looks like defer never gets called when under heavy load (and clients
> see connection reset by peer)
>
> Does anyone know a way of getting current open connections?
>
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