Revert "cleanup"

This reverts commit 76e7ccc.

internal/xhttp/xhttp.go

@@ -0,0 +1,42 @@
+package xhttp
+
+import (
+	"crypto/tls"
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/buglloc/certifi"
+)
+
+const (
+	dialTimeout    = 1 * time.Second
+	requestTimeout = 5 * time.Second
+	keepAlive      = 60 * time.Second
+)
+
+func NewHTTPClient() *http.Client {
+	return &http.Client{
+		Transport: NewTransport(),
+		Timeout:   requestTimeout,
+		CheckRedirect: func(req *http.Request, via []*http.Request) error {
+			return http.ErrUseLastResponse
+		},
+	}
+}
+
+func NewTransport() http.RoundTripper {
+	transport := http.DefaultTransport.(*http.Transport).Clone()
+	transport.TLSClientConfig = NewTLSClientConfig()
+	transport.DialContext = (&net.Dialer{
+		Timeout:   dialTimeout,
+		KeepAlive: keepAlive,
+	}).DialContext
+	return transport
+}
+
+func NewTLSClientConfig() *tls.Config {
+	return &tls.Config{
+		RootCAs: certifi.NewCertPool(),
+	}
+}