72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
package pipelining
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import (
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"bufio"
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"context"
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"net"
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"net/http"
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"github.com/containous/traefik/v2/pkg/log"
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"github.com/containous/traefik/v2/pkg/middlewares"
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)
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const (
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typeName = "Pipelining"
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)
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// pipelining returns a middleware
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type pipelining struct {
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next http.Handler
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}
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// New returns a new pipelining instance
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func New(ctx context.Context, next http.Handler, name string) http.Handler {
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log.FromContext(middlewares.GetLoggerCtx(ctx, name, typeName)).Debug("Creating middleware")
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return &pipelining{
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next: next,
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}
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}
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func (p *pipelining) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
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// https://github.com/golang/go/blob/3d59583836630cf13ec4bfbed977d27b1b7adbdc/src/net/http/server.go#L201-L218
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if r.Method == http.MethodPut || r.Method == http.MethodPost {
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p.next.ServeHTTP(rw, r)
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} else {
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p.next.ServeHTTP(&writerWithoutCloseNotify{rw}, r)
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}
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}
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// writerWithoutCloseNotify helps to disable closeNotify
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type writerWithoutCloseNotify struct {
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W http.ResponseWriter
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}
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// Header returns the response headers.
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func (w *writerWithoutCloseNotify) Header() http.Header {
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return w.W.Header()
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}
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// Write writes the data to the connection as part of an HTTP reply.
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func (w *writerWithoutCloseNotify) Write(buf []byte) (int, error) {
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return w.W.Write(buf)
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}
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// WriteHeader sends an HTTP response header with the provided
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// status code.
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func (w *writerWithoutCloseNotify) WriteHeader(code int) {
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w.W.WriteHeader(code)
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}
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// Flush sends any buffered data to the client.
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func (w *writerWithoutCloseNotify) Flush() {
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if f, ok := w.W.(http.Flusher); ok {
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f.Flush()
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}
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}
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// Hijack hijacks the connection.
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func (w *writerWithoutCloseNotify) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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return w.W.(http.Hijacker).Hijack()
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}
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