![]() Because of that, the header will be much more lightweight and no time will be spent waiting for responses from recipients or double-checking connections. UDP doesn’t do any error checking, ask for acknowledgements, have congestion control, and bother numbering packets. With that out of the way, let’s get started: Speeds What you see is what you get, essentially – TCP uses streams of data packets, and UDP sends packets individually. There’s not much to be said about transfer methods either. What we mentioned in the table at “Used For” pretty much sums it all up. TCP applications, though, since they’re pretty straightforward. So what is the difference between TCP and UDP, exactly? We took a quick look at their differences before, but let’s see what they all mean. Here’s a quick look at the main differences between TCP and UDP:Įmail, web browsing, file transfers, streaming It’s not ideal, sure, but it’s better than what would happen with TCP in this scenario – your game freezing. Because of that, the protocol is mostly used for gaming, video conferencing, and broadcasts.įor example, if you miss a few UDP packets in an online match, you might experience things like randomly teleporting across the map when walking or shooting multiple bullets instead of one when hitting Mouse 1 just once. So, UDP doesn’t:Īll in all, if the recipient misses some UDP packets, they can’t get them back. It sends packets to a recipient, but it doesn’t check if they were delivered successfully. Unlike TCP, UDP only has one-way communications. Why? Because reliability isn’t so important. The main difference between TCP and UDP is that UDP is much more lightweight. That’s why you get the “This site can’t be reached” error.
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