lib/cleanhttp/cleanhttp.go
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// Copyright (c) HashiCorp, Inc. // SPDX-License-Identifier: MPL-2.0 package cleanhttp import ( "net" "net/http" "runtime" "time" ) // DefaultTransport returns a new http.Transport with similar default values to // http.DefaultTransport, but with idle connections and keepalives disabled. func DefaultTransport() *http.Transport { transport := DefaultPooledTransport() transport.DisableKeepAlives = true transport.MaxIdleConnsPerHost = -1 return transport } // DefaultPooledTransport returns a new http.Transport with similar default // values to http.DefaultTransport. Do not use this for transient transports as // it can leak file descriptors over time. Only use this for transports that // will be re-used for the same host(s). func DefaultPooledTransport() *http.Transport { transport := &http.Transport{ Proxy: http.ProxyFromEnvironment, DialContext: (&net.Dialer{ Timeout: 30 * time.Second, KeepAlive: 30 * time.Second, DualStack: true, }).DialContext, MaxIdleConns: 100, IdleConnTimeout: 90 * time.Second, ExpectContinueTimeout: 1 * time.Second, ForceAttemptHTTP2: true, MaxIdleConnsPerHost: runtime.GOMAXPROCS(0) + 1, } return transport } // DefaultClient returns a new http.Client with similar default values to // http.Client, but with a non-shared Transport, idle connections disabled, and // keepalives disabled. func DefaultClient() *http.Client { return &http.Client{ Transport: DefaultTransport(), } } // DefaultPooledClient returns a new http.Client with similar default values to // http.Client, but with a shared Transport. Do not use this function for // transient clients as it can leak file descriptors over time. Only use this // for clients that will be re-used for the same host(s). func DefaultPooledClient() *http.Client { return &http.Client{ Transport: DefaultPooledTransport(), } }