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)
	}

pkg net/http/httptrace, type ClientTrace struct, WroteRequest func(WroteRequestInfo)
pkg net/http/httptrace, type DNSDoneInfo struct
pkg net/http/httptrace, type DNSDoneInfo struct, Addrs []net.IPAddr
pkg net/http/httptrace, type DNSDoneInfo struct, Coalesced bool
pkg net/http/httptrace, type DNSDoneInfo struct, Err error
pkg net/http/httptrace, type DNSStartInfo struct
pkg net/http/httptrace, type DNSStartInfo struct, Host string

		})
		tv.Field(i).Set(newFunc)
	}
}

// DNSStartInfo contains information about a DNS request.
type DNSStartInfo struct {
	Host string
}

// DNSDoneInfo contains information about the results of a DNS lookup.
type DNSDoneInfo struct {
	// Addrs are the IPv4 and/or IPv6 addresses found in the DNS
	// lookup. The contents of the slice should not be mutated.
	Addrs []net.IPAddr

		PutIdleConn:          func(err error) { logf("PutIdleConn = %v", err) },
		DNSStart:             func(e httptrace.DNSStartInfo) { logf("DNS start: %+v", e) },
		DNSDone:              func(e httptrace.DNSDoneInfo) { logf("DNS done: %+v", e) },
		ConnectStart:         func(network, addr string) { logf("ConnectStart: Connecting to %s %s ...", network, addr) },
		ConnectDone: func(network, addr string, err error) {
			if err != nil {

		{"ClientTrace.WroteHeaders", Field, 7},
		{"ClientTrace.WroteRequest", Field, 7},
		{"ContextClientTrace", Func, 7},
		{"DNSDoneInfo", Type, 7},
		{"DNSDoneInfo.Addrs", Field, 7},
		{"DNSDoneInfo.Coalesced", Field, 7},
		{"DNSDoneInfo.Err", Field, 7},
		{"DNSStartInfo", Type, 7},
		{"DNSStartInfo.Host", Field, 7},
		{"GotConnInfo", Type, 7},
		{"GotConnInfo.Conn", Field, 7},