pyzmq/examples/heartbeat/ping.py

37 lines
680 B
Python

#!/usr/bin/env python
"""For use with pong.py
This script simply pings a process started by pong.py or tspong.py, to
demonstrate that zmq remains responsive while Python blocks.
Authors
-------
* MinRK
"""
import time
import numpy
import zmq
ctx = zmq.Context()
req = ctx.socket(zmq.REQ)
req.connect('tcp://127.0.0.1:10111')
# wait for connects
time.sleep(1)
n = 0
while True:
t: float = numpy.random.random()
time.sleep(t)
for i in range(4):
n += 1
msg = f'ping {n}'
tic = time.time()
req.send_string(msg)
resp = req.recv_string()
print(f"{msg}: {1000 * (time.time() - tic):.2f} ms")
assert msg == resp