There are two main connection protocols: TCP and UDP, and the latter is a “connectionless” protocol, so how is data transferred if there is no established connection between sender and recipient?
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UDP isn’t really connection-less, it just doesn’t verify the connection.
TCP protocol has a handshake that establishes a connection, something like:
– Hey Remote System, Sender here, I have some data for you
– Remote System here, ready and waiting for your data
– Ok, here’s your data
– Thank you Sender, I got got your data
In UDP, Sender just sprays data at Remote System, and whatever happens to it happens to it, not Sender’s problem
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