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

Documentation: net/http/httptrace

		 1  // Copyright 2016 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  package httptrace_test
		 6  
		 7  import (
		 8  	"fmt"
		 9  	"log"
		10  	"net/http"
		11  	"net/http/httptrace"
		12  )
		13  
		14  func Example() {
		15  	req, _ := http.NewRequest("GET", "http://example.com", nil)
		16  	trace := &httptrace.ClientTrace{
		17  		GotConn: func(connInfo httptrace.GotConnInfo) {
		18  			fmt.Printf("Got Conn: %+v\n", connInfo)
		19  		},
		20  		DNSDone: func(dnsInfo httptrace.DNSDoneInfo) {
		21  			fmt.Printf("DNS Info: %+v\n", dnsInfo)
		22  		},
		23  	}
		24  	req = req.WithContext(httptrace.WithClientTrace(req.Context(), trace))
		25  	_, err := http.DefaultTransport.RoundTrip(req)
		26  	if err != nil {
		27  		log.Fatal(err)
		28  	}
		29  }
		30  

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