Packet corruption and UDP?

UDP is a lossy protocol, it does not guarantee delivery of data. I imagine your simulation of a client server UDP relationship is a "best effort" (emulating the protocol itself) and so no, you would not need this extra code.

I have read in many text books that some stack implimentations will provide a packet w/ an error indicating the checksum has failed while others discard the packet. In practice all of the systems I have ever used discard the packet if the checksum fails.

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