Handshake

A handshake is a process that occurs at the beginning of a communication session between two devices (such as a client and a server) to establish a connection and ensure that both parties are ready to exchange data

The most common example is the three-way handshake used by TCP to establish a connection between a client and a server. Here’s how it works:

1. SYN (Synchronize):

   • The client sends a SYN message to the server, indicating it wants to start a connection.

2. SYN-ACK (Synchronize-Acknowledge):

   • The server responds with a SYN-ACK message, acknowledging the client's request and indicating that it's ready to communicate.

3. ACK (Acknowledge):

   • The client sends an ACK message to the server, confirming that the connection is now established.