45 lines
1005 B
Go
45 lines
1005 B
Go
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// SPDX-License-Identifier: MIT
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// SPDX-FileCopyrightText: © 2015 LabStack LLC and Echo contributors
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//go:build !go1.20
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package middleware
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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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// TODO: remove when Go 1.23 is released and we do not support 1.19 anymore
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func responseControllerFlush(rw http.ResponseWriter) error {
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for {
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switch t := rw.(type) {
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case interface{ FlushError() error }:
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return t.FlushError()
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case http.Flusher:
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t.Flush()
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return nil
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case interface{ Unwrap() http.ResponseWriter }:
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rw = t.Unwrap()
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default:
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return fmt.Errorf("%w", http.ErrNotSupported)
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}
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}
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}
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// TODO: remove when Go 1.23 is released and we do not support 1.19 anymore
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func responseControllerHijack(rw http.ResponseWriter) (net.Conn, *bufio.ReadWriter, error) {
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for {
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switch t := rw.(type) {
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case http.Hijacker:
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return t.Hijack()
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case interface{ Unwrap() http.ResponseWriter }:
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rw = t.Unwrap()
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default:
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return nil, nil, fmt.Errorf("%w", http.ErrNotSupported)
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}
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}
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}
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