Read frame error when recv empty binary frame.

[azzbcc]

[ERR] kws.c:1426 Read frame error because need = -7

It seem that kws->datalen = 9 on line

libks/src/kws.c

Line 1315 in 6c94460

if ((kws->datalen = kws_string_read(kws, kws->buffer, 9 + 1, kws->block)) < 0) { // read 9 bytes into NULL terminated 10 byte buffer

And the empty binary frame only need 2 bytes.

Finally failed on line

libks/src/kws.c

Lines 1422 to 1429 in 6c94460

	need = (kws->plen - (kws->datalen - need));
	if (need < 0) {
	/* invalid read - protocol err .. */
	ks_log(KS_LOG_ERROR, "Read frame error because need = %ld\n", need);
	*oc = WSOC_CLOSE;
	return kws_close(kws, WS_NONE);
	}

empty_binary_fram.pcap.gz