Method FlushError

modules/caddyhttp/encode/encode.go:292–316

FlushError is an alternative Flush returning an error. It delays the actual Flush of the underlying ResponseWriterWrapper until headers were written.

()

// FlushError is an alternative Flush returning an error. It delays the actual Flush of the underlying
// ResponseWriterWrapper until headers were written.
func (rw *responseWriter) FlushError() error {
	// WriteHeader wasn't called and is a CONNECT request, treat it as a success.
	// otherwise, wait until header is written.
	if rw.isConnect && !rw.wroteHeader && rw.statusCode == 0 {
		rw.WriteHeader(http.StatusOK)
	}

	if !rw.wroteHeader {
		// flushing the underlying ResponseWriter will write header and status code,
		// but we need to delay that until we can determine if we must encode and
		// therefore add the Content-Encoding header; this happens in the first call
		// to rw.Write (see bug in #4314)
		return nil
	}
	// also flushes the encoder, if any
	// see: https://github.com/jjiang-stripe/caddy-slow-gzip
	if rw.w != nil {
		err := rw.w.Flush()
		if err != nil {
			return err
		}
	}
	//nolint:bodyclose
	return http.NewResponseController(rw.ResponseWriter).Flush()
}

// Write writes to the response. If the response qualifies,
// it is encoded using the encoder, which is initialized