54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
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package forward
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import (
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"bufio"
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"fmt"
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"net"
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"net/http"
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)
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var (
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_ http.Hijacker = &responseFlusher{}
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_ http.Flusher = &responseFlusher{}
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_ http.CloseNotifier = &responseFlusher{}
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)
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type responseFlusher struct {
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http.ResponseWriter
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flush bool
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}
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func newResponseFlusher(rw http.ResponseWriter, flush bool) *responseFlusher {
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return &responseFlusher{
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ResponseWriter: rw,
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flush: flush,
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}
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}
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func (wf *responseFlusher) Write(p []byte) (int, error) {
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written, err := wf.ResponseWriter.Write(p)
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if wf.flush {
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wf.Flush()
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}
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return written, err
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}
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func (wf *responseFlusher) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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hijacker, ok := wf.ResponseWriter.(http.Hijacker)
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if !ok {
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return nil, nil, fmt.Errorf("the ResponseWriter doesn't support the Hijacker interface")
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}
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return hijacker.Hijack()
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}
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func (wf *responseFlusher) CloseNotify() <-chan bool {
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return wf.ResponseWriter.(http.CloseNotifier).CloseNotify()
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}
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func (wf *responseFlusher) Flush() {
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flusher, ok := wf.ResponseWriter.(http.Flusher)
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if ok {
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flusher.Flush()
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}
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}
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