sockets - how decrease UDP backlog to once packet at a time?

Question

Most articles are about how to increase a UDP socket's receive buffer size to handle more packets, but I need a solution to decrease the UDP receive buffer to accept only 1 packet at a time and discard/drop all other packets until that packet is read.

I'm trying to do this for Linux, and did some network stack tuning, like setting the RCVBUFF and RCVBUFFFORCE socket options, but that didn't work. I cannot reduce RCVBUFF lower than 2046B (maybe 1 memory page), even when setting the udp_rmem_min to 0.

Why i can’t set UDP RCVBUF lower than 2046?

question from:https://stackoverflow.com/questions/65920151/how-decrease-udp-backlog-to-once-packet-at-a-time

Answer 1

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