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Fix encoder name bug; remove unused field in encode middleware struct
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@ -35,6 +35,10 @@ func (b Brotli) Validate() error {
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return nil
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}
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// AcceptEncoding returns the name of the encoding as
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// used in the Accept-Encoding request headers.
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func (Brotli) AcceptEncoding() string { return "br" }
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// NewEncoder returns a new brotli writer.
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func (b Brotli) NewEncoder() encode.Encoder {
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quality := brotli.DefaultCompression
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@ -46,6 +50,6 @@ func (b Brotli) NewEncoder() encode.Encoder {
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// Interface guards
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var (
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_ encode.Encoding = (*Brotli)(nil)
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_ encode.Encoding = (*Brotli)(nil)
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_ caddy.Validator = (*Brotli)(nil)
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)
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@ -1,8 +1,8 @@
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// Package encode implements an encoder middleware for Caddy. The initial
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// enhancements related to Accept-Encoding, minimum content length, and
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// buffer/writer pools were adapted from https://github.com/xi2/httpgzip
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// then modified heavily to accommodate modular encoders. Code borrowed
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// from that repository is Copyright (c) 2015 The Httpgzip Authors.
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// then modified heavily to accommodate modular encoders and fix bugs.
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// Code borrowed from that repository is Copyright (c) 2015 The Httpgzip Authors.
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package encode
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import (
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@ -33,14 +33,11 @@ type Encode struct {
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Prefer []string `json:"prefer,omitempty"`
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MinLength int `json:"minimum_length,omitempty"`
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Encodings map[string]Encoding `json:"-"`
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writerPools map[string]*sync.Pool // TODO: these pools do not get reused through config reloads...
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}
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// Provision provisions enc.
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func (enc *Encode) Provision(ctx caddy.Context) error {
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enc.Encodings = make(map[string]Encoding)
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enc.writerPools = make(map[string]*sync.Pool)
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for modName, rawMsg := range enc.EncodingsRaw {
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@ -49,9 +46,8 @@ func (enc *Encode) Provision(ctx caddy.Context) error {
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return fmt.Errorf("loading encoder module '%s': %v", modName, err)
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}
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encoder := val.(Encoding)
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enc.Encodings[modName] = encoder
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enc.writerPools[modName] = &sync.Pool{
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enc.writerPools[encoder.AcceptEncoding()] = &sync.Pool{
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New: func() interface{} {
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return encoder.NewEncoder()
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},
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@ -159,17 +155,6 @@ func (rw *responseWriter) Write(p []byte) (int, error) {
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return n, err
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}
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// init should be called before we write a response, if rw.buf has contents.
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func (rw *responseWriter) init() {
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if rw.Header().Get("Content-Encoding") == "" && rw.buf.Len() >= rw.config.MinLength {
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rw.w = rw.config.writerPools[rw.encodingName].Get().(Encoder)
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rw.w.Reset(rw.ResponseWriter)
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rw.Header().Del("Content-Length") // https://github.com/golang/go/issues/14975
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rw.Header().Set("Content-Encoding", rw.encodingName)
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}
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rw.Header().Del("Accept-Ranges") // we don't know ranges for dynamically-encoded content
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}
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// Close writes any remaining buffered response and
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// deallocates any active resources.
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func (rw *responseWriter) Close() error {
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@ -213,6 +198,17 @@ func (rw *responseWriter) Close() error {
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return err
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}
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// init should be called before we write a response, if rw.buf has contents.
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func (rw *responseWriter) init() {
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if rw.Header().Get("Content-Encoding") == "" && rw.buf.Len() >= rw.config.MinLength {
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rw.w = rw.config.writerPools[rw.encodingName].Get().(Encoder)
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rw.w.Reset(rw.ResponseWriter)
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rw.Header().Del("Content-Length") // https://github.com/golang/go/issues/14975
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rw.Header().Set("Content-Encoding", rw.encodingName)
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}
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rw.Header().Del("Accept-Ranges") // we don't know ranges for dynamically-encoded content
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}
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// acceptedEncodings returns the list of encodings that the
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// client supports, in descending order of preference. If
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// the Sec-WebSocket-Key header is present then non-identity
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@ -288,8 +284,10 @@ type Encoder interface {
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Reset(io.Writer)
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}
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// Encoding is a type which can create encoders of its kind.
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// Encoding is a type which can create encoders of its kind
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// and return the name used in the Accept-Encoding header.
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type Encoding interface {
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AcceptEncoding() string
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NewEncoder() Encoder
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}
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@ -40,6 +40,10 @@ func (g Gzip) Validate() error {
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return nil
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}
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// AcceptEncoding returns the name of the encoding as
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// used in the Accept-Encoding request headers.
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func (Gzip) AcceptEncoding() string { return "gzip" }
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// NewEncoder returns a new gzip writer.
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func (g Gzip) NewEncoder() encode.Encoder {
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writer, _ := gzip.NewWriterLevel(nil, g.Level)
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@ -51,7 +55,7 @@ var defaultGzipLevel = 5
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// Interface guards
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var (
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_ encode.Encoding = (*Gzip)(nil)
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_ encode.Encoding = (*Gzip)(nil)
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_ caddy.Provisioner = (*Gzip)(nil)
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_ caddy.Validator = (*Gzip)(nil)
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)
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@ -16,6 +16,10 @@ func init() {
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// Zstd can create zstd encoders.
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type Zstd struct{}
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// AcceptEncoding returns the name of the encoding as
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// used in the Accept-Encoding request headers.
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func (Zstd) AcceptEncoding() string { return "zstd" }
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// NewEncoder returns a new gzip writer.
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func (z Zstd) NewEncoder() encode.Encoder {
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writer, _ := zstd.NewWriter(nil)
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