Python SDK based UDP initialisation problem

Software
1

I am facing this problem, i know by going to the web page and setting it to local this gets fixed, but i need to know that how do i ensure that after reboot it also works everytime because right now after i restart my jetson this issue again coming -->>

Contacting sensor 169.254.16.106...
Will change udp_dest from '169.254.1.1' to automatically detected UDP DEST
Initializing connection to sensor 169.254.16.106 on lidar port 7502 with udp dest '@auto'...
[2025-04-01 10:45:14.027] [ouster::sensor] [info] Opening port: 7502
[2025-04-01 10:45:14.027] [ouster::sensor] [info] Opening port: 46089
Retrieved metadata:
  serial no:        991952000289
  firmware version: v2.3.0
  product line:     OS-1-16-A3
  lidar mode:       1024x20

Exception in thread Thread-10:
Traceback (most recent call last):
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/home/scooter/Desktop/Recording_ws/swift-pilot/swiftly/two_wheeler/modular/Lidar2.py", line 136, in run
    self.lidar_callback()
  File "/home/scooter/Desktop/Recording_ws/swift-pilot/swiftly/two_wheeler/modular/Lidar2.py", line 127, in lidar_callback
    xyz, timestamp = self.sensor.get_xyz()
  File "/home/scooter/Desktop/Recording_ws/swift-pilot/swiftly/two_wheeler/modular/Lidar2.py", line 41, in get_xyz
    for packet, *_ in self.source:
  File "/home/scooter/.local/lib/python3.8/site-packages/ouster/sdk/client/multi.py", line 45, in collate_scans
    for idx, m in source:
  File "/home/scooter/.local/lib/python3.8/site-packages/ouster/sdk/sensor/sensor_scan_source.py", line 173, in _scans_iter
    raise ClientTimeout(f"No valid scans received within {self._timeout/1e9}s from sensor "
ouster.sdk.client.core.ClientTimeout: No valid scans received within 1.0s from sensor 169.254.16.106 using udp destination 169.254.1.1 on port 7502.

Here’s the code I am using:


from ouster.sdk import client, sensor
from ouster.sdk.client import LidarMode
from contextlib import closing

class OusterSensor:
        def __init__(self, hostname):
                self.hostname = hostname
                self.config = client.SensorConfig()
                self.config.lidar_mode = client.LidarMode.MODE_1024x20
                self.config.udp_port_lidar = 7502
                self.config.udp_port_imu = 7503
                self.config.udp_dest = "169.254.1.1"
                self.config.operating_mode = client.OperatingMode.OPERATING_NORMAL
                client.set_config(self.hostname, self.config, persist=True, udp_dest_auto=False)
                self.source = sensor.SensorScanSource(self.hostname)
                self.metadata = self.source.metadata[0]
                self.xyzlut = client.XYZLut(self.metadata, use_extrinsics=True)
                self.interval = 0.05
                # Pre-allocate buffer for timestamp to avoid creating new objects
                self.timestamp_proto = Timestamp()

I need correct Initialisation parameters so that after restart , config persists.

Same problem i am facing when UDP Destination = Auto

Here’s my connection settings :

IPv4 Method : Manual
Address: 169.254.1.1
Mask: 255.255.0.0

2

I suspect that this is caused by not properly shutting down the scan_source which leaves the port occupied, try invoking self.source.close() before you exit.