Advertise a Bambu printer to Orca Slicer / Bambu Studio

bambu-notify.py

# Derived from this: https://gist.github.com/Alex-Schaefer/72a9e2491a42da2ef99fb87601955cc3
# This script mimics my Bambu printer's behavior and keeps advertising itself via SSDP every 5s.
# You could keep this running in the background, so you don't have to remember starting it whenever you start Orca Slicer or Bambu Studio.

import sys
import socket
import time
from datetime import datetime

TARGET_IP = "127.0.0.1" # Change this to the IP of the computer with the printer software. If you're running this on the same computer, leave it as is.
PRINTER_USN = "yourserial" # This is the serial number of the printer. https://wiki.bambulab.com/en/general/find-sn
PRINTER_DEV_MODEL = "C12" # "3DPrinter-X1-Carbon", "3DPrinter-X1", "C11" (for P1P), "C12" (for P1S), "C13" (for X1E), "N1" (A1 mini), "N2S" (A1)
PRINTER_DEV_NAME = "Drucker 001" # The friendly name displayed in Bambu Studio / Orca Slicer. Set this to whatever you want.
PRINTER_DEV_SIGNAL = "-44" # Fake wifi signal strength
PRINTER_DEV_CONNECT = "lan" # printer is in lan only mode
PRINTER_DEV_BIND = "free" # and is not bound to any cloud account
PRINTER_IP = None # If you want to hardcode the printer IP, set it here. Otherwise, pass it as the first argument to the script.
TARGET_PORT = 2021 # The port used for SSDP discovery

def send_udp_response(response):
    with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
        try:
            sock.sendto(response.encode(), (TARGET_IP, TARGET_PORT))
            print("UDP packet sent successfully.")
        except socket.error as e:
            print("Error sending UDP packet:", e)

def resolve_and_validate(input_str):
    """Resolve a hostname or FQDN to an IP address, or just return the IP address after validating it."""
    try:
        # This will work for both FQDN and hostname
        return socket.gethostbyname(input_str)
    except socket.gaierror:
        # If resolution fails, check if it's a valid IP
        try:
            socket.inet_aton(input_str)
            return input_str  # It's a valid IP, so return it as-is
        except socket.error:
            print(f"Unable to resolve {input_str} to an IP address.")
            sys.exit(2)

def main():
    if PRINTER_IP is None:
        # If PRINTER_IP is not set, check if it was passed as an argument
        if len(sys.argv) == 2:
            provided_ip = sys.argv[1]
        else:
            print("Please specify your printer's IP, FQDN or hostname.\nusage:", sys.argv[0], "<PRINTER_IP>\nAlternatively, set PRINTER_IP in the script.")
            sys.exit(2)
    else:
        # If PRINTER_IP is set, use that
        provided_ip = PRINTER_IP

    # Now that we have a printer IP, FQDN or hostname, resolve and validate it
    printer_ip = resolve_and_validate(provided_ip)

    response = (
        f"NOTIFY * HTTP/1.1\r\n"
        f"HOST: 239.255.255.250:1900\r\n"
        f"Server: UPnP/1.0\r\n"
        f"Location: {printer_ip}\r\n"
        f"NT: urn:bambulab-com:device:3dprinter:1\r\n"
        f"USN: {PRINTER_USN}\r\n"
        f"Cache-Control: max-age=1800\r\n"
        f"DevModel.bambu.com: {PRINTER_DEV_MODEL}\r\n"
        f"DevName.bambu.com: {PRINTER_DEV_NAME}\r\n"
        f"DevSignal.bambu.com: {PRINTER_DEV_SIGNAL}\r\n"
        f"DevConnect.bambu.com: {PRINTER_DEV_CONNECT}\r\n"
        f"DevBind.bambu.com: {PRINTER_DEV_BIND}\r\n"
        f"Devseclink.bambu.com: secure\r\n"
        f"DevVersion.bambu.com: 01.07.00.00\r\n"
        f"DevCap.bambu.com: 1\r\n\r\n"
    )
    while True:
      print(f"{datetime.now()} Sending response with PRINTER_IP={printer_ip} to {TARGET_IP}:{TARGET_PORT}")
      send_udp_response(response)
      time.sleep(5)

if __name__ == "__main__":
    main()

Derived from https://gist.github.com/Alex-Schaefer/72a9e2491a42da2ef99fb87601955cc3