How to set the message max length

[SITSGRestia]

When I send a big message I got an error:
utils/writeLPBytes: Length (452624) greater than 65535 bytes

[zhgqiang]

I got an error the same

[wbtvc]

It only support max length 64K bytes, You must rewrite the code。
message.go: maxLPString =65535

func writeLPBytes(buf []byte, b []byte) (int, error) {
	total, n := 0, len(b)

	if n > int(maxLPString) {
		return 0, fmt.Errorf("utils/writeLPBytes: Length (%d) greater than %d bytes.", n, maxLPString)
	}
...
}