1// Copyright 2018 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// +build go1.11
6
7package http2
8
9import (
10	"net/http/httptrace"
11	"net/textproto"
12)
13
14func traceHasWroteHeaderField(trace *httptrace.ClientTrace) bool {
15	return trace != nil && trace.WroteHeaderField != nil
16}
17
18func traceWroteHeaderField(trace *httptrace.ClientTrace, k, v string) {
19	if trace != nil && trace.WroteHeaderField != nil {
20		trace.WroteHeaderField(k, []string{v})
21	}
22}
23
24func traceGot1xxResponseFunc(trace *httptrace.ClientTrace) func(int, textproto.MIMEHeader) error {
25	if trace != nil {
26		return trace.Got1xxResponse
27	}
28	return nil
29}
30