Freenove ESP32-S3 - Page 83

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Chapter 6 TCP/IP
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TCP is a connection-oriented, low-level transmission control protocol. After TCP establishes a connection, the
client and server can send and receive messages to each other, and the connection will always exist as long
as the client or server does not initiate disconnection. Each time one party sends a message, the other party
will reply with an ack signal.
The client sends a data
message, and the server
replies with a
confirmation signal.
The server sends a data
message, and the client
replies with a
confirmation signal.
the first handshake
the third handshake
the second handshake