Receiving data in TCP

Question

If i send 1000 bytes in TCP, does it guarantee that the receiver will get the entire 1000 bytes \"togther\"? or perhaps he will first only get 500 bytes, and later he\'ll re

Answer 1

Basically as far as TCP goes it only guarantees that the data sent from one end to the other end will be sent in the same order. Now usually what you'll have to do is have an internal buffer that keeps looping until it has received your 1000 byte "packet". Because the recv command as mentioned returns how much has actually been received. So usually you'll have to then implement a protocol on top of TCP to make sure you send data at an appropriate speed. Because if you send() all the data in one run through it will overload the under lying networking stack, and which will cause complications. So usually in the protocol there is a tiny acknowledgement packet sent back to confirm that the packet of 1000 bytes are sent.