The web just wouldn't function without TCP. And while TCP is slower because of the way it establishes connections, and due to the checks for missing packets, it can still be blazing fast.
TCP also allows for buffering, so your browser can request and load more data as you watch, allowing for smooth playback and for you to skip ahead to other parts of the video. UDP is the better choice for live video and audio or online games where speed is more important than potential data loss. If you play video games, you might think that the way TCP ensures all data packets arrive at the other device would make it the ideal choice. But in reality, all the checking and resending data that TCP does just adds latency.
Game developers have found other clever ways to ensure that player input and state are as accurate as possible. If you're interested in reading more about why UDP is preferred for online gaming, check out this article. And if someone asks which is faster, tell 'em what you read here: "UDP is faster, but And if you like what you read, let me know over on Twitter. If you read this far, tweet to the author to show them you care.
Tweet a thanks. Learn to code for free. Get started. Forum Donate. Kris Koishigawa. Here's a brief comparison between the two: Source For an even higher-level overview of how the internet works, check out this five minute video: What is TCP? To establish a connection between two devices, TCP uses a method called a three-way handshake: Source For example, to read this article on your device, your device first sent a message to the freeCodeCamp News server called an SYN Synchronize Sequence Number.
What is UDP? In general, UDP is the faster protocol. Although it still has certain drawbacks that prevent it from being used in all applications, there have been great advancements in improving its stability and reliability. UDP is likely the protocol the Internet will move towards in order to deliver standard information such as website data, videos, etc.
Support Find answers, guides, and tutorials to supercharge your content delivery. Protocol features UDP TCP Reliability Unreliable, there is no guarantee that all packets will be received Very reliable, all data is acknowledged and tracks data transfer in order to ensure that all packets have been received Connection Connectionless, in that there is no dedicated connection required Connection-oriented, in that it requires a dedicated connection before any data can be transferred Acknowledgements Not required, this allows for faster speeds All data is acknowledged.
Get started. KeyCDN uses cookies to make its website easier to use. Learn more about cookies. Very reliable, all data is acknowledged and tracks data transfer in order to ensure that all packets have been received.
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