Function halfCloseWrite

core/relay/tcp.go:150–156

halfCloseWrite attempts a CloseWrite on TCP conns so the peer sees EOF cleanly. For non-TCP conns it falls back to Close.

(c net.Conn)

// halfCloseWrite attempts a CloseWrite on TCP conns so the peer sees EOF
// cleanly. For non-TCP conns it falls back to Close.
func halfCloseWrite(c net.Conn) error {
	type closeWriter interface{ CloseWrite() error }
	if cw, ok := c.(closeWriter); ok {
		return cw.CloseWrite()
	}
	return c.Close()
}

// Listener is a thin wrapper that applies relay-friendly TCP socket options.
// Individual platform backends may replace it with one that also installs