Inter-process communication between Kobra processes

gklib, gkapi and k3sysui communicate mainly via UNIX domain sockets and TCP.

Trace commands

Intercept gklib IO (can use gkapi or K3SysUi PID instead, or all three together):

strace -z -Y -y -f -e trace=read,write -e signal=none --strings-in-hex=non-ascii-chars -s 1000 -p <pid-of-gklib>

Intercept socket API:

2>&1 | grep 'socket:'

Intercept serial comms:

2>&1 | grep '/dev/tty'

Go-klipper (gklib) API commands

The socket used by gklib (/tmp/unix_uds1) implements a limited Klipper API. In addition it supports the following commands:

query filament hub

{"method":"objects/query","params":{"objects":{"filament_hub":null}},"id":30}\\\\x03

response:

{"id":30,"result":{"eventtime":10406.219115208,"status":{"filament_hub":{"auto_refill":0,"current_filament":"","cutter_state":0,"ext_spool":0,"ext_spool_status":"ready","filament_hubs":[{"id":0,"status":"ready","dryer_status":{"status":"stop","target_temp":0,"duration":0,"remain_time":0},"temp":45,"slots":[{"index":0,"status":"ready","sku":"","type":"PLA","color":[158,166,180],"rfid":1,"source":2},{"index":1,"status":"ready","sku":"","type":"PLA","color":[255,255,255],"rfid":1,"source":2},{"index":2,"status":"empty","sku":"","type":"","color":[0,0,0],"source":3},{"index":3,"status":"empty","sku":"","type":"","color":[0,0,0],"source":3}]}],"statistics":{"unwind_stat":[0,0,0,0,0],"feed_stat":[29,0,0,0,0]}}}}}\\\\x03

auto-refill

{"method":"filament_hub/set_config","params":{"auto_refill":1},"id":31}\\\\x03