Python urllib timeout usage

RESULTS of testing urllib and socket timeout.md

• Python 3.6.9

pz@asus:~/snippets/urllib-timeout $ python3 urllib_check.py
Test server send bytes at one moment, with timeout 1.
b'1234567890'
Duration: 0.0029508500010706484
Test server send 1 byte per 0.5 sec, with timeout 1.
b'1234567890'
Duration: 13.017826942999818
Test server send 1 bytes per 2 sec for total 10 bytes (56 sec long), with timeout 10.
b'1234567890'
Duration: 52.54494177000015

• Python 3.7.7

pz@asus:~/snippets/urllib-timeout $ python3.7 urllib_check.py
Test server send bytes at one moment, with timeout 1.
b'1234567890'
Duration: 0.005291239001962822
Test server send 1 byte per 0.5 sec, with timeout 1.
b'1234567890'
Duration: 13.016211187998124
Test server send 1 bytes per 2 sec for total 10 bytes (56 sec long), with timeout 10.
b'1234567890'
Duration: 52.54022990700469

• Python 3.8

pz@asus:~/snippets/urllib-timeout $ python3.8 urllib_check.py
Test server send bytes at one moment, with timeout 1.
b'1234567890'
Duration: 0.004608458002621774
Test server send 1 byte per 0.5 sec, with timeout 1.
b'1234567890'
Duration: 13.018239862001792
Test server send 1 bytes per 2 sec for total 10 bytes (56 sec long), with timeout 10.
b'1234567890'
Duration: 52.542847764001635

server.py

import socket
import time

serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serv.bind(("0.0.0.0", 8888))
serv.listen(5)
while True:
    conn, addr = serv.accept()

    from_client = ""
    data = conn.recv(4096)
    if not data:
        break
    from_client += data.decode()
    print(from_client)
    if "longlasting" in from_client:
        for b in """HTTP/1.1 200 OK\n\n1234567890""":
            conn.send(b.encode())
            time.sleep(2)
    elif "wait" in from_client:
        for b in """HTTP/1.1 200 OK\n\n1234567890""":
            conn.send(b.encode())
            time.sleep(0.5)
    else:
        conn.send("HTTP/1.1 200 OK\n\n1234567890".encode())
    conn.close()
    print("client disconnected")

urllib_check.py

import urllib.request
import timeit
import socket


def test_longlasting(url, timeout=None):
    with urllib.request.urlopen(
        f"http://127.0.0.1:8888/{url}", timeout=timeout
    ) as f:
        print(f.read(10))


print("Test server send bytes at one moment, with timeout 1.")
start_time = timeit.default_timer()
try:
    test_longlasting("timeout", 1)
except socket.timeout:
    print("timeout")
print("Duration:", timeit.default_timer() - start_time)

print("Test server send 1 byte per 0.5 sec, with timeout 1.")
start_time = timeit.default_timer()
try:
    test_longlasting("wait", 1)
except socket.timeout:
    print("timeout")
print("Duration:", timeit.default_timer() - start_time)

print(
    "Test server send 1 byte per 2 secs for total 10 bytes (56 sec long), "
    "with timeout 10."
)
start_time = timeit.default_timer()
try:
    test_longlasting("longlasting", 10)
except socket.timeout:
    print("timeout")
print("Duration:", timeit.default_timer() - start_time)