Checking Zoom latency externally
Here is a handy script that I often use to check the quality of the Zoom connection. It measures TCP latency instead of the usual ICMP stuff (which is often blocked). #!/usr/bin/env python3 """ TCP Ping Test (defaults to port 80, 10000 packets) Usage: ./tcpping.py host [port] [maxCount] - Ctrl-C Exits with Results """ """ pip3 install matplotlib numpy python3 ./tcp_ping_grapher.py 115.114.56.202 443 100 python3 ./tcp_ping_grapher.py teams.microsoft.com 443 100 """ import sys import socket import time import signal from timeit import default_timer as timer # https://matplotlib.org/examples/animation/animate_decay.html import numpy as np import matplotlib.pyplot as plt import matplotlib.animation as animation host = None port = 80 # Default to 10000 connections max maxCount = 10000 ## Inputs # Required Host try: host = sys.argv[1] # host = "115.114.56.202" except IndexError: print("Usage: tcpping.py host [port] [maxCount]") sys.exit(1) # Optional Port try: port = int(sys.argv[2]) # port = 443 except ValueError: print("Error: Port Must be Integer:", sys.argv[2]) sys.exit(1) except IndexError: pass # Optional maxCount try: maxCount = int(sys.argv[3]) except ValueError: print("Error: Max Count Value Must be Integer", sys.argv[3]) sys.exit(1) except IndexError: pass # Pass/Fail counters passed = 0 failed = 0 def getResults(): """ Summarize Results """ lRate = 0 if failed != 0: lRate = failed / (count) * 100 lRate = "%.2f" % lRate print("\nTCP Ping Results: Connections (Total/Pass/Fail): [{:}/{:}/{:}] (Failed: {:}%)".format((count), passed, failed, str(lRate))) def signal_handler(signal, frame): """ Catch Ctrl-C and Exit """ getResults() sys.exit(0) # Register SIGINT Handler signal.signal(signal.SIGINT, signal_handler) def work(t=0): passed = 0 failed = 0 count = 0 maxCount = 3200 # Loop while less than max count or until Ctrl-C caught while count < maxCount: # Increment Counter count += 1 success = False # New Socket s = socket.socket( socket.AF_INET, socket.SOCK_STREAM) # 1sec Timeout s.settimeout(1) # Start a timer s_start = timer() # Try to Connect try: s.connect((host, int(port))) s.shutdown(socket.SHUT_RD) success = True # Connection Timed Out except socket.timeout: print("Connection timed out!") failed += 1 except OSError as e: print("OS Error:", e) failed += 1 # Stop Timer s_stop = timer() s_runtime = "%.2f" % (1000 * (s_stop - s_start)) if success: print("Connected to %s[%s]: tcp_seq=%s time=%s ms" % (host, port, (count-1), s_runtime)) passed += 1 # Sleep for 1sec if count < maxCount: # time.sleep(0.5) # time.sleep(1) time.sleep(2) t += 2 yield t, float(s_runtime) # Output Results if maxCount reached # getResults() def data_gen(t=0): cnt = 0 while cnt < 1000: cnt += 1 t += 0.1 yield t, np.sin(2*np.pi*t) * np.exp(-t/10.) def init(): ax.set_ylim(0, 128 * 3) ax.set_xlim(0, 300) del xdata[:] del ydata[:] line.set_data(xdata, ydata) return line, fig, ax = plt.subplots() line, = ax.plot([], [], lw=2) ax.grid() xdata, ydata = [], [] def run(data): # update the data t, y = data xdata.append(t) ydata.append(y) xmin, xmax = ax.get_xlim() if t >= xmax: ax.set_xlim(xmin, 2*xmax) ax.figure.canvas.draw() line.set_data(xdata, ydata) return line, ani = animation.FuncAnimation(fig, run, work, blit=False, interval=10, repeat=False, init_func=init) plt.show() Usage: ...