What are examples of TCP and UDP in real life?

UDP: Anything where you don’t care too much if you get all data always

  • Tunneling/VPN (lost packets are ok – the tunneled protocol takes care of it)
  • Media streaming (lost frames are ok)
  • Games that don’t care if you get every update
  • Local broadcast mechanisms (same application running on different machines “discovering” each other)

TCP: Almost anything where you have to get all transmitted data

  • Web
  • SSH, FTP, telnet
  • SMTP, sending mail
  • IMAP/POP, receiving mail

EDIT: I’m not going to bother explaining the differences, since you state that you already know and every other answer explains it anyway 🙂

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