fix: use cleanhttp transport (default transport in retryablehttp

go.mod

@@ -14,6 +14,8 @@ require (
 	github.com/fernet/fernet-go v0.0.0-20240119011108-303da6aec611
 	github.com/gogo/googleapis v1.4.1
 	github.com/google/uuid v1.6.0
+	github.com/hashicorp/go-cleanhttp v0.5.2
+	github.com/redis/go-redis/extra/redisotel/v9 v9.5.3
 	github.com/stretchr/testify v1.9.0
 	github.com/zitadel/oidc/v3 v3.28.1
 	go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace v0.53.0
@@ -36,7 +38,6 @@ require (
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/golang/mock v1.6.0 // indirect
 	github.com/gorilla/mux v1.8.1 // indirect
-	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
 	github.com/prometheus/client_golang v1.20.1 // indirect
@@ -45,7 +46,6 @@ require (
 	github.com/prometheus/procfs v0.15.1 // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
 	github.com/redis/go-redis/extra/rediscmd/v9 v9.5.3 // indirect
-	github.com/redis/go-redis/extra/redisotel/v9 v9.5.3 // indirect
 	github.com/tchap/go-patricia/v2 v2.3.1 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect

oidc/oidc.go

@@ -4,12 +4,12 @@ import (
 	"context"
 	"errors"
 	"log/slog"
-	"net/http"
 	"net/http/httptrace"
 	"strings"
 	"time"
 
 	"github.com/google/uuid"
+	cleanhttp "github.com/hashicorp/go-cleanhttp"
 	"github.com/hashicorp/go-retryablehttp"
 	"github.com/zitadel/oidc/v3/pkg/client/rp"
 	"github.com/zitadel/oidc/v3/pkg/oidc"
@@ -45,7 +45,7 @@ func NewOIDCProvider(clientID, clientSecret, redirectURI, issuer string, scopes
 	var pkce bool
 
 	otelTransport := otelhttp.NewTransport(
-		http.DefaultTransport,
+		cleanhttp.DefaultPooledTransport(),
 		otelhttp.WithClientTrace(func(ctx context.Context) *httptrace.ClientTrace {
 			return otelhttptrace.NewClientTrace(ctx)
 		}),