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I’d like to know the general cost of creating a new connection, compared to UDP. I know TCP requires an initial exchange of packets (the 3 way handshake). What would be other costs? For instance is there some sort of magic in the kernel needed for setting up buffers etc?
The reason I’m asking is I can keep an existing connection open and reuse it as needed. However if there is little overhead reconnecting it would reduce complexity.
Compared to the latency of the packet exchange, all other costs such as kernel setup times are insignificant.