Thanks very much for the paper. It was really helpful.
Now I can receive from the SF. However, what I receive is unexpected. First,
what is the platform that I have to send to the SF? At the moment I resend
the platform that I receive from the SF. Second, the data length byte is
always '\t' which leads to wrong readings. Following is my code:
char s[2];
char dataLen[1];
char packet[256];
char platform[4];
int rcd;
short data;
short len;
if ((rcd = recv(sd, s, 2, 0)) != 0)
{
send(sd, s, 2, 0);
rcd = recv(sd, platform, 4, 0); //reads 4 bytes
send(sd, platform, 4, 0); //send the platform that I received
rcd = recv(sd, dataLen, 1, 0); //dataLen is always '\t'
sscanf(dataLen, "%d", &len); //wrong len
printf("%d\n", len);
rcd = recv(sd, packet, len, 0); //read wrong data
sscanf(packet, "%d", &data); //read the first byte
printf("%d\n", data);
}
I also found this article about the SF protocol:
http://www.stanza.co.uk/emergentcity/?cat=11
Regards
Islam Hegazy
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