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default_http_clients.go
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default_http_clients.go
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package httpclient
import (
"crypto/tls"
"crypto/x509"
"io"
"log"
"net"
"net/http"
"time"
"code.cloudfoundry.org/tlsconfig"
proxy "github.com/cloudfoundry/socks5-proxy"
)
var (
DefaultClient = CreateDefaultClientInsecureSkipVerify()
defaultDialerContextFunc = SOCKS5DialContextFuncFromEnvironment((&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}), proxy.NewSocks5Proxy(proxy.NewHostKey(), log.New(io.Discard, "", log.LstdFlags), 1*time.Minute))
)
type Client interface {
Do(*http.Request) (*http.Response, error)
}
func CreateDefaultClient(certPool *x509.CertPool) *http.Client {
insecureSkipVerify := false
external := false
disableKeepAlives := true
return factory{}.New(insecureSkipVerify, external, disableKeepAlives, certPool)
}
func CreateExternalDefaultClient(certPool *x509.CertPool) *http.Client {
insecureSkipVerify := false
external := true
disableKeepAlives := true
return factory{}.New(insecureSkipVerify, external, disableKeepAlives, certPool)
}
func CreateKeepAliveDefaultClient(certPool *x509.CertPool) *http.Client {
insecureSkipVerify := false
external := true
disableKeepAlives := false
return factory{}.New(insecureSkipVerify, external, disableKeepAlives, certPool)
}
func CreateDefaultClientInsecureSkipVerify() *http.Client {
insecureSkipVerify := true
external := false
disableKeepAlives := true
return factory{}.New(insecureSkipVerify, external, disableKeepAlives, nil)
}
func ResetDialerContext() {
defaultDialerContextFunc = SOCKS5DialContextFuncFromEnvironment((&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}), proxy.NewSocks5Proxy(proxy.NewHostKey(), log.New(io.Discard, "", log.LstdFlags), 1*time.Minute))
}
type factory struct{}
func (f factory) New(insecureSkipVerify, externalClient bool, disableKeepAlives bool, certPool *x509.CertPool) *http.Client {
serviceDefaults := tlsconfig.WithInternalServiceDefaults()
if externalClient {
serviceDefaults = tlsconfig.WithExternalServiceDefaults()
}
tlsConfig, err := tlsconfig.Build(
serviceDefaults,
WithInsecureSkipVerify(insecureSkipVerify),
WithClientSessionCache(0),
).Client(tlsconfig.WithAuthority(certPool))
if err != nil {
log.Fatal(err)
}
client := &http.Client{
Transport: &http.Transport{
TLSClientConfig: tlsConfig,
Proxy: http.ProxyFromEnvironment,
DialContext: defaultDialerContextFunc,
TLSHandshakeTimeout: 30 * time.Second,
DisableKeepAlives: disableKeepAlives,
},
}
return client
}
func WithInsecureSkipVerify(insecureSkipVerify bool) tlsconfig.TLSOption {
return func(config *tls.Config) error {
config.InsecureSkipVerify = insecureSkipVerify
return nil
}
}
func WithClientSessionCache(capacity int) tlsconfig.TLSOption {
return func(config *tls.Config) error {
config.ClientSessionCache = tls.NewLRUClientSessionCache(capacity)
return nil
}
}