Question

I’m trying to send response with this code:

//s is  Accepted Client 

char* buf = "0x11";      
send(s, buf, 8, 0);

I have some documentation that states:

For each incoming packet server must receive acknowledgment byte (indicates, that packet was received successfully): 0x11

I’m new in System programming (I’m a web developer); Can you help me to understand how to send a byte packet?

Answer 1

For each incoming packet server must receive acknowledgment byte (indicates, that packet was received successfully): 0x11

You probably need to send just one byte then:

char byte = 0x11;
send(s, &byte, 1, 0);

Or as a one liner:

send(s, "\x11", 1, 0);