Just wanted to follow up, was curious if you still see any hangs or if the logging had given any more clues?
I just got home from a trip, and now that I have a Pi watching the serial port, it hasn’t hung once 
I have no idea what’s going on but it seems ok now.
I’ve been having a pretty consistent issue with PB losing connectivity after about 3 days of uptime. I am using websockets to update data about once an hour. Power cycle always brings everything back up.
I just tried sending a /reboot POST and that brought everything back up. Thank you for that!
The pixelblaze-client documentation on github is very complete wrt the websocket functions.
How can /reboot be received and work if you said the esp32 lost connectivity?