1 package cleanhttp
2 3 import (
4 "net"
5 "net/http"
6 "runtime"
7 "time"
8 )
9 10 // DefaultTransport returns a new http.Transport with similar default values to
11 // http.DefaultTransport, but with idle connections and keepalives disabled.
12 func DefaultTransport() *http.Transport {
13 transport := DefaultPooledTransport()
14 transport.DisableKeepAlives = true
15 transport.MaxIdleConnsPerHost = -1
16 return transport
17 }
18 19 // DefaultPooledTransport returns a new http.Transport with similar default
20 // values to http.DefaultTransport. Do not use this for transient transports as
21 // it can leak file descriptors over time. Only use this for transports that
22 // will be re-used for the same host(s).
23 func DefaultPooledTransport() *http.Transport {
24 transport := &http.Transport{
25 Proxy: http.ProxyFromEnvironment,
26 DialContext: (&net.Dialer{
27 Timeout: 30 * time.Second,
28 KeepAlive: 30 * time.Second,
29 DualStack: true,
30 }).DialContext,
31 MaxIdleConns: 100,
32 IdleConnTimeout: 90 * time.Second,
33 TLSHandshakeTimeout: 10 * time.Second,
34 ExpectContinueTimeout: 1 * time.Second,
35 ForceAttemptHTTP2: true,
36 MaxIdleConnsPerHost: runtime.GOMAXPROCS(0) + 1,
37 }
38 return transport
39 }
40 41 // DefaultClient returns a new http.Client with similar default values to
42 // http.Client, but with a non-shared Transport, idle connections disabled, and
43 // keepalives disabled.
44 func DefaultClient() *http.Client {
45 return &http.Client{
46 Transport: DefaultTransport(),
47 }
48 }
49 50 // DefaultPooledClient returns a new http.Client with similar default values to
51 // http.Client, but with a shared Transport. Do not use this function for
52 // transient clients as it can leak file descriptors over time. Only use this
53 // for clients that will be re-used for the same host(s).
54 func DefaultPooledClient() *http.Client {
55 return &http.Client{
56 Transport: DefaultPooledTransport(),
57 }
58 }
59