| // Copyright Istio Authors |
| // |
| // 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 kube |
| |
| import ( |
| "crypto/tls" |
| "fmt" |
| "net/http" |
| ) |
| |
| import ( |
| spdyStream "k8s.io/apimachinery/pkg/util/httpstream/spdy" |
| "k8s.io/client-go/rest" |
| "k8s.io/client-go/transport/spdy" |
| ) |
| |
| // roundTripperFor creates a SPDY upgrader that will work over custom transports. |
| func roundTripperFor(restConfig *rest.Config) (http.RoundTripper, spdy.Upgrader, error) { |
| // Get the TLS config. |
| tlsConfig, err := rest.TLSConfigFor(restConfig) |
| if err != nil { |
| return nil, nil, fmt.Errorf("failed getting TLS config: %w", err) |
| } |
| if tlsConfig == nil && restConfig.Transport != nil { |
| // If using a custom transport, skip server verification on the upgrade. |
| tlsConfig = &tls.Config{ |
| InsecureSkipVerify: true, |
| } |
| } |
| |
| var upgrader *spdyStream.SpdyRoundTripper |
| if restConfig.Proxy != nil { |
| upgrader = spdyStream.NewRoundTripperWithProxy(tlsConfig, restConfig.Proxy) |
| } else { |
| upgrader = spdyStream.NewRoundTripper(tlsConfig) |
| } |
| wrapper, err := rest.HTTPWrappersForConfig(restConfig, upgrader) |
| if err != nil { |
| return nil, nil, fmt.Errorf("failed creating SPDY upgrade wrapper: %w", err) |
| } |
| return wrapper, upgrader, nil |
| } |