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package http3
// copied from net/transport.go
// gzipReader wraps a response body so it can lazily
// call gzip.NewReader on the first call to Read
import (
"compress/gzip"
"io"
)
// call gzip.NewReader on the first call to Read
type gzipReader struct {
body io.ReadCloser // underlying Response.Body
zr *gzip.Reader // lazily-initialized gzip reader
zerr error // sticky error
}
func newGzipReader(body io.ReadCloser) io.ReadCloser {
return &gzipReader{body: body}
}
func (gz *gzipReader) Read(p []byte) (n int, err error) {
if gz.zerr != nil {
return 0, gz.zerr
}
if gz.zr == nil {
gz.zr, err = gzip.NewReader(gz.body)
if err != nil {
gz.zerr = err
return 0, err
}
}
return gz.zr.Read(p)
}
func (gz *gzipReader) Close() error {
return gz.body.Close()
}
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