mirror of
https://github.com/dutchcoders/transfer.sh.git
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76 lines
2.2 KiB
Go
76 lines
2.2 KiB
Go
// Copyright 2015 Google Inc. All rights reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package header
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import (
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"net/http"
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"strings"
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"github.com/google/martian"
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)
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// Hop-by-hop headers as defined by RFC2616.
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//
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// http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-14#section-7.1.3.1
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var hopByHopHeaders = []string{
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"Connection",
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"Keep-Alive",
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"Proxy-Authenticate",
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"Proxy-Authorization",
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"Proxy-Connection", // Non-standard, but required for HTTP/2.
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"Te",
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"Trailer",
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"Transfer-Encoding",
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"Upgrade",
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}
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type hopByHopModifier struct{}
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// NewHopByHopModifier removes Hop-By-Hop headers from requests and
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// responses.
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func NewHopByHopModifier() martian.RequestResponseModifier {
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return &hopByHopModifier{}
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}
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// ModifyRequest removes all hop-by-hop headers defined by RFC2616 as
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// well as any additional hop-by-hop headers specified in the
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// Connection header.
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func (m *hopByHopModifier) ModifyRequest(req *http.Request) error {
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removeHopByHopHeaders(req.Header)
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return nil
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}
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// ModifyResponse removes all hop-by-hop headers defined by RFC2616 as
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// well as any additional hop-by-hop headers specified in the
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// Connection header.
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func (m *hopByHopModifier) ModifyResponse(res *http.Response) error {
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removeHopByHopHeaders(res.Header)
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return nil
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}
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func removeHopByHopHeaders(header http.Header) {
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// Additional hop-by-hop headers may be specified in `Connection` headers.
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// http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-14#section-9.1
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for _, vs := range header["Connection"] {
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for _, v := range strings.Split(vs, ",") {
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k := http.CanonicalHeaderKey(strings.TrimSpace(v))
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header.Del(k)
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}
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}
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for _, k := range hopByHopHeaders {
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header.Del(k)
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}
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}
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