mirror of
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49 lines
1.6 KiB
Go
49 lines
1.6 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 httpspec provides a modifier stack that has been preconfigured to
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// provide spec-compliant HTTP proxy behavior.
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//
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// Related: https://www.mnot.net/blog/2011/07/11/what_proxies_must_do
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package httpspec
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import (
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"github.com/google/martian/fifo"
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"github.com/google/martian/header"
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)
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// NewStack returns a martian modifier stack that handles ensuring proper proxy
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// behavior, in addition to a fifo.Group that can be used to add additional
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// modifiers within the stack.
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func NewStack(via string) (outer *fifo.Group, inner *fifo.Group) {
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outer = fifo.NewGroup()
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hbhm := header.NewHopByHopModifier()
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outer.AddRequestModifier(hbhm)
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outer.AddRequestModifier(header.NewForwardedModifier())
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outer.AddRequestModifier(header.NewBadFramingModifier())
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vm := header.NewViaModifier(via)
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outer.AddRequestModifier(vm)
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inner = fifo.NewGroup()
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outer.AddRequestModifier(inner)
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outer.AddResponseModifier(inner)
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outer.AddResponseModifier(vm)
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outer.AddResponseModifier(hbhm)
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return outer, inner
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}
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