Nick James Kirkby driftregion

Doctoral student @asu-mapel

driftregion / flask_with_websocket_server.py

Created August 6, 2021 11:52

Flask app that pushes updates to the browser with a websocket

	#!/usr/bin/env python3

	import threading
	from flask import Flask
	from websocket_server import WebsocketServer
	import logging
	import time

	app = Flask(__name__)

driftregion / service_from_service.py

Created May 19, 2020 09:39

Calling a ROS2 service from the callback of another service

	import time
	from threading import Event

	from example_interfaces.srv import AddTwoInts

	import rclpy
	from rclpy.node import Node
	from rclpy.callback_groups import ReentrantCallbackGroup
	from rclpy.executors import MultiThreadedExecutor, SingleThreadedExecutor

driftregion / udp-XRCE-DDS-dissector.lua

Last active May 6, 2024 22:44

rudimentary Wireshark plugin for XRCE-DDS

	-- place in ~/.config/wireshark/plugins/

	local p_xrce_dds = Proto("xrce-dds", "XRCE-DDS");
	local p_xrce_dds_header = Proto("xrce-dds-header", "Header");
	local p_xrce_dds_submessage = Proto("xrce-dds-submessage", "Submessage");

	local f_sessionId = ProtoField.uint8("xrce-dds.sessionId", "sessionId", base.HEX)
	local f_streamId = ProtoField.uint8("xrce-dds.streamId", "streamId", base.HEX)
	local f_sequenceNr = ProtoField.uint16("xrce-dds.sequenceNr", "sequenceNr", base.DEC)
	local f_clientKey = ProtoField.uint32("xrce-dds.clientKey", "clientKey", base.HEX)