// Copyright 2016 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // +build ignore package httptrace_test import ( "fmt" "log" "net/http" "net/http/httptrace" ) func Example() { req, _ := http.NewRequest("GET", "http://example.com", nil) trace := &httptrace.ClientTrace{ GotConn: func(connInfo httptrace.GotConnInfo) { fmt.Printf("Got Conn: %+v\n", connInfo) }, DNSDone: func(dnsInfo httptrace.DNSDoneInfo) { fmt.Printf("DNS Info: %+v\n", dnsInfo) }, } req = req.WithContext(httptrace.WithClientTrace(req.Context(), trace)) _, err := http.DefaultTransport.RoundTrip(req) if err != nil { log.Fatal(err) } }