Yeah I’m lost – the strace shows that the recvfrom works and then PMS calls close() – the error doesn’t seem to match what you’d expect from strace output.
PMS here is on an Ubuntu 18.04 - AMD Ryzen 5 1600 Six-Core Processor, 16gb ram, RX580 video, 256gb boot, 3tb hard drive.
It seems like we need someone from Plex Inc to take a closer look and at a minimum add more debugging statements to figure out why they think they didn’t get a full read.