// 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" "github.com/google/go-containerregistry/pkg/name" ) type schemeTransport struct { // Scheme we should use, determined by ping response. scheme string // Registry we're talking to. registry name.Registry // Wrapped by schemeTransport. inner http.RoundTripper } // RoundTrip implements http.RoundTripper func (st *schemeTransport) RoundTrip(in *http.Request) (*http.Response, error) { // When we ping() the registry, we determine whether to use http or https // based on which scheme was successful. That is only valid for the // registry server and not e.g. a separate token server or blob storage, // so we should only override the scheme if the host is the registry. if matchesHost(st.registry.String(), in, st.scheme) { in.URL.Scheme = st.scheme } return st.inner.RoundTrip(in) }