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Lengthy delay when sending UDP to offline devices on a LAN #25

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PaulStoffregen opened this issue Jul 19, 2018 · 1 comment
Open

Lengthy delay when sending UDP to offline devices on a LAN #25

PaulStoffregen opened this issue Jul 19, 2018 · 1 comment

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@PaulStoffregen
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When sending to an IP number on the same LAN which is offline, users report lengthy delays.

https://forum.pjrc.com/threads/30473-Timeout-delay-in-sendUDP-in-endPacket-when-target-is-not-online
@PaulStoffregen
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Pretty sure this only happens when sending to IP numbers in the same subnet (devices directly reachable on the local LAN) where we need to get a reply to an ARP query to find the 6 byte destination mac address.

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@PaulStoffregen