const net/http.sniffLen

7 uses

	net/http (current package)
		fs.go#L238: 			var buf [sniffLen]byte
		server.go#L555: 	return !w.cw.wroteHeader && !haveType && w.written < sniffLen
		server.go#L585: 		n0, err := io.CopyBuffer(writerOnly{w}, io.LimitReader(src, sniffLen), buf)
		server.go#L587: 		if err != nil || n0 < sniffLen {
		sniff.go#L13: const sniffLen = 512
		sniff.go#L22: 	if len(data) > sniffLen {
		sniff.go#L23: 		data = data[:sniffLen]