resp, err := client.Do(req)
	// ...

For control over proxies, TLS configuration, keep-alives,
compression, and other settings, create a [Transport]:

	tr := &http.Transport{
		MaxIdleConns:       10,
		IdleConnTimeout:    30 * time.Second,
		DisableCompression: true,
	}
	client := &http.Client{Transport: tr}
	resp, err := client.Get("https://example.com")

Clients and Transports are safe for concurrent use by multiple

		Proxy:                 http.ProxyFromEnvironment,
		DialContext:           dialContext,
		MaxIdleConnsPerHost:   maxIdleConnsPerHost,
		WriteBufferSize:       WriteBufferSize,
		ReadBufferSize:        ReadBufferSize,
		IdleConnTimeout:       15 * time.Second,
		ResponseHeaderTimeout: 15 * time.Minute, // Conservative timeout is the default (for MinIO internode)
		TLSHandshakeTimeout:   10 * time.Second,
		TLSClientConfig:       &tlsClientConfig,

	// The HTTP/2 implementation manages the idle timer itself
	// (see idleConnTimeout in h2_bundle.go).
	if t.IdleConnTimeout > 0 && pconn.alt == nil {
		if pconn.idleTimer != nil {
			pconn.idleTimer.Reset(t.IdleConnTimeout)
		} else {
			pconn.idleTimer = time.AfterFunc(t.IdleConnTimeout, pconn.closeConnIfStillIdle)
		}
	}
	pconn.idleAt = time.Now()
	return nil
}

	if !EnableHTTP2Probing {
		return t, nil
	}
	if t.TLSHandshakeTimeout == 0 {
		t.TLSHandshakeTimeout = defaultTransport.TLSHandshakeTimeout
	}
	if t.IdleConnTimeout == 0 {
		t.IdleConnTimeout = defaultTransport.IdleConnTimeout
	}
	t2, err := http2.ConfigureTransports(t)
	if err != nil {
		return nil, err
	}
	t2.ReadIdleTimeout = time.Duration(30) * time.Second

		httpClient.Transport = &http.Transport{
			Proxy:           http.ProxyFromEnvironment,
			TLSClientConfig: config,
			DialContext: (&net.Dialer{
				Timeout: time.Second * 10,
			}).DialContext,
			IdleConnTimeout:       90 * time.Second,
			TLSHandshakeTimeout:   10 * time.Second,
			ExpectContinueTimeout: 1 * time.Second,
		}

		retryBackoffTime := firstRetryBackOffTime
		startTime := time.Now()

	var updateTransport http.RoundTripper = &http.Transport{
		Proxy:                 http.ProxyFromEnvironment,
		DialContext:           xhttp.NewInternodeDialContext(timeout, globalTCPOptions),
		IdleConnTimeout:       timeout,
		TLSHandshakeTimeout:   timeout,
		ExpectContinueTimeout: timeout,
		TLSClientConfig: &tls.Config{
			RootCAs:            globalRootCAs,

			return true
		})
		break
	}
}

// Issue 16208: Go 1.7 crashed after Transport.IdleConnTimeout if an
// HTTP/2 connection was established but its caller no longer
// wanted it. (Assuming the connection cache was enabled, which it is
// by default)
//
// This test reproduced the crash by setting the IdleConnTimeout low
// (to make the test reasonable) and then making a request which is

}

func (t *http2Transport) idleConnTimeout() time.Duration {
	// to keep things backwards compatible, we use non-zero values of
	// IdleConnTimeout, followed by using the IdleConnTimeout on the underlying
	// http1 transport, followed by 0
	if t.IdleConnTimeout != 0 {
		return t.IdleConnTimeout
	}

	if t.t1 != nil {
		return t.t1.IdleConnTimeout
	}

	return 0
}

		{"Transport.DisableKeepAlives", Field, 0},
		{"Transport.ExpectContinueTimeout", Field, 6},
		{"Transport.ForceAttemptHTTP2", Field, 13},
		{"Transport.GetProxyConnectHeader", Field, 16},
		{"Transport.IdleConnTimeout", Field, 7},
		{"Transport.MaxConnsPerHost", Field, 11},
		{"Transport.MaxIdleConns", Field, 7},
		{"Transport.MaxIdleConnsPerHost", Field, 0},
		{"Transport.MaxResponseHeaderBytes", Field, 7},