TCP - Transmission Control Protocol
📱
SENDER
💻
RECEIVER
SYN →
← SYN-ACK
ACK →
DATA
← ACK
UDP - User Datagram Protocol
📱
SENDER
💻
RECEIVER
DATA
DATA
DATA

Current Step:

Click "Start TCP" or "Start UDP" to see how each protocol works
TCP: Reliable, ordered delivery with connection setup (handshake). Used for web, email, file transfer.

UDP: Fast, connectionless, no guarantees. Used for streaming, gaming, DNS, VoIP.