mirror of https://github.com/k3s-io/k3s
54 lines
2.0 KiB
Go
54 lines
2.0 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package portforward
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import (
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"io"
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"net/http"
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"time"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/runtime"
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"k8s.io/apiserver/pkg/util/wsstream"
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)
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// PortForwarder knows how to forward content from a data stream to/from a port
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// in a pod.
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type PortForwarder interface {
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// PortForwarder copies data between a data stream and a port in a pod.
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PortForward(name string, uid types.UID, port int32, stream io.ReadWriteCloser) error
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}
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// ServePortForward handles a port forwarding request. A single request is
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// kept alive as long as the client is still alive and the connection has not
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// been timed out due to idleness. This function handles multiple forwarded
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// connections; i.e., multiple `curl http://localhost:8888/` requests will be
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// handled by a single invocation of ServePortForward.
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func ServePortForward(w http.ResponseWriter, req *http.Request, portForwarder PortForwarder, podName string, uid types.UID, portForwardOptions *V4Options, idleTimeout time.Duration, streamCreationTimeout time.Duration, supportedProtocols []string) {
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var err error
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if wsstream.IsWebSocketRequest(req) {
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err = handleWebSocketStreams(req, w, portForwarder, podName, uid, portForwardOptions, supportedProtocols, idleTimeout, streamCreationTimeout)
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} else {
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err = handleHTTPStreams(req, w, portForwarder, podName, uid, supportedProtocols, idleTimeout, streamCreationTimeout)
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}
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if err != nil {
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runtime.HandleError(err)
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return
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}
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}
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