Method validate_checksum

modules/network/ping/ping.js:118–123

(identifier, seqNumber, checksum)

		return ~sum & 0xFFFF;
	}
	static validate_checksum(identifier, seqNumber, checksum) {
		let sum = 191232;									// sum of packet bytes (0x08, 0x09...0x37)
		sum += identifier + seqNumber;
		sum += (sum >> 16);
		return checksum === (~sum & 0xFFFF);
	}
	
	static error = -1;
	static response = 1;