In TCP/IP sockets, how would the server know that a client is busy and not receiving data ?
My solution:
Use connect(),
I am not sure.
thanks
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In TCP/IP sockets, how would the server know that a client is busy and not receiving data ?
My solution:
Use connect(),
I am not sure.
thanks
If a TCP is constantly pushing data that the peer doesn’t acknowledge, eventually the send window will fill up. At that point the TCP is going to buffer data to “send later”. Eventually the buffer size will be reached and
send(2)will hang (something it doesn’t usually do).If
send(2)starts hanging it means the peer TCP isn’t acknowledging data.Obviously, even if the peer TCP accepts data it doesn’t mean the peer application actually uses it. You could implement your own
ACKmechanism on top ofTCP, and it’s not as unreasonable as it sounds. It would involve having the client send a “send me more” message once in a while.