// Copyright 2019 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package transport

import "net/http"

const (
	transportName = "go-containerregistry"
)

type useragentTransport struct {
	// Wrapped by useragentTransport.
	inner http.RoundTripper
}

// RoundTrip implements http.RoundTripper
func (ut *useragentTransport) RoundTrip(in *http.Request) (*http.Response, error) {
	in.Header.Set("User-Agent", transportName)
	return ut.inner.RoundTrip(in)
}
