From 9fdd167dba95521df41c4e5f75907cdcf8e41c50 Mon Sep 17 00:00:00 2001
From: beorn7 <beorn@soundcloud.com>
Date: Wed, 25 Jan 2017 12:49:31 +0100
Subject: [PATCH] InstrumentHandler: Document issues with HTTP/2

---
 prometheus/http.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/prometheus/http.go b/prometheus/http.go
index a397277..d74fb48 100644
--- a/prometheus/http.go
+++ b/prometheus/http.go
@@ -172,6 +172,9 @@ func nowSeries(t ...time.Time) nower {
 // httputil.ReverseProxy is a prominent example for a handler
 // performing such writes.
 //
+// - It has additional issues with HTTP/2, cf.
+// https://github.com/prometheus/client_golang/issues/272.
+//
 // Upcoming versions of this package will provide ways of instrumenting HTTP
 // handlers that are more flexible and have fewer issues. Please prefer direct
 // instrumentation in the meantime.