Function unpacketize

modules/crypt/ssl/ssl_changecipher.js:48–57

(session, fragment)

const changeCipherSpec = Object.freeze({
	name: "changeCipherSpec",
	unpacketize(session, fragment) {
		session.traceProtocol(this);
		var type = (new SSLStream(fragment)).readChar();
		if (type == change_cipher_spec) {
			session.readSeqNum = BigInt(0);	// the specification is very ambiguous about the sequence number...
			return SetupCipher(session, !session.connectionEnd);		// tail call optimization
		}
		else
			throw new TLSError("changeCipherSpec: bad type");
	},
	packetize(session, type) {
		session.traceProtocol(this);
		var s = new SSLStream();