Configure http transport

Author: aledbf

components/registry-facade/cmd/run.go

@@ -8,6 +8,7 @@ import (
 	"crypto/sha256"
 	"encoding/hex"
 	"io"
+	"net"
 	"net/http"
 	"os"
 	"os/signal"
@@ -64,7 +65,7 @@ var runCmd = &cobra.Command{
 
 		promreg := prometheus.NewRegistry()
 		gpreg := prometheus.WrapRegistererWithPrefix("gitpod_registry_facade_", promreg)
-		rtt, err := registry.NewMeasuringRegistryRoundTripper(http.DefaultTransport, prometheus.WrapRegistererWithPrefix("downstream_", gpreg))
+		rtt, err := registry.NewMeasuringRegistryRoundTripper(newDefaultTransport(), prometheus.WrapRegistererWithPrefix("downstream_", gpreg))
 		if err != nil {
 			log.WithError(err).Fatal("cannot registry metrics")
 		}
@@ -125,6 +126,23 @@ var runCmd = &cobra.Command{
 	},
 }
 
+func newDefaultTransport() *http.Transport {
+	return &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
+		DialContext: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+			DualStack: false,
+		}).DialContext,
+		MaxIdleConns:          0,
+		MaxIdleConnsPerHost:   32,
+		IdleConnTimeout:       30 * time.Second,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 5 * time.Second,
+		DisableKeepAlives:     true,
+	}
+}
+
 func init() {
 	rootCmd.AddCommand(runCmd)
 }