How to know the packet loss ratio of SCO socket

Hi, all:
as the title said, I am writing a simple server-client socket program for SCO
connection. While client is sending the SCO packet to server, it attaches a
sequence number to it. Then I want server to estimate the packet loss.
[Client program is as the following]
for (i = 0; i < 48, i++) buf[i] = 0x7f;
while (1) {
  *(uint32_t *)buf = htobl(seq);
  *(uint32_t *)(buf+4) = htobs(48);
  if (send(sockfd, buf, 48, 0) < 0) break;
  seq++;
  usleep(1)
}

However, on the server side, the data is total different, and I am not able to
get the sequence number (the hcidump -x also shows different data content as I
expect. Also, it's weird that the content is repeated)

Is this data encoded? or is there anyway to know the packet loss ratio of the
SCO connection?

Bests,
Jui-Hao


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