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Source file src/net/http/httptrace/example_test.go

Documentation: net/http/httptrace

  // 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.
  
  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)
  	}
  }
  

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