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curl/tests/http/test_19_shutdown.py
Viktor Szakats 739c09c8a4
tests: bundle http clients, de-dupe, enable for MSVC 
To make building the http client tests faster, with no duplication, by
using the build method that other test binaries already use.

The difference compared to other tests is that these don't use internal
libcurl headers or code. With the exception of `curl_config.h`, for
a feature macro.

Before this patch, these tests were built like examples.

Also:
- de-duplicate code and give unique names to colliding symbols.
- add local getopt implementation and enable all code for MSVC.
  Adapted for curl via Public Domain source:
  4e618ef782/getopt.h
  Credits-to: Christopher Wellons
  Thanks!

Closes #17627
2025-06-16 12:29:05 +02:00

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
#
import logging
import os
import re
import pytest
from testenv import Env, CurlClient, LocalClient
log = logging.getLogger(__name__)
class TestShutdown:
@pytest.fixture(autouse=True, scope='class')
def _class_scope(self, env, httpd):
indir = httpd.docs_dir
env.make_data_file(indir=indir, fname="data-10k", fsize=10*1024)
env.make_data_file(indir=indir, fname="data-100k", fsize=100*1024)
env.make_data_file(indir=indir, fname="data-1m", fsize=1024*1024)
# check with `tcpdump` that we see curl TCP RST packets
@pytest.mark.skipif(condition=not Env.tcpdump(), reason="tcpdump not available")
@pytest.mark.parametrize("proto", ['http/1.1'])
def test_19_01_check_tcp_rst(self, env: Env, httpd, proto):
if env.ci_run:
pytest.skip("seems not to work in CI")
# timing critical, disable trace overrides
run_env = os.environ.copy()
if 'CURL_DEBUG' in run_env:
del run_env['CURL_DEBUG']
curl = CurlClient(env=env, run_env=run_env)
port = env.port_for(alpn_proto=proto)
url = f'https://{env.domain1}:{port}/data.json?[0-1]'
r = curl.http_download(urls=[url], alpn_proto=proto, with_tcpdump=True, extra_args=[
'--parallel'
])
r.check_response(http_status=200, count=2)
assert r.tcpdump
assert len(r.tcpdump.get_rsts(ports=[port])) != 0, f'Expected TCP RSTs packets: {r.tcpdump.stderr}'
# check with `tcpdump` that we do NOT see TCP RST when CURL_GRACEFUL_SHUTDOWN set
@pytest.mark.skipif(condition=not Env.tcpdump(), reason="tcpdump not available")
@pytest.mark.parametrize("proto", ['http/1.1', 'h2'])
def test_19_02_check_shutdown(self, env: Env, httpd, proto):
if not env.curl_is_debug():
pytest.skip('only works for curl debug builds')
run_env = os.environ.copy()
run_env.update({
'CURL_GRACEFUL_SHUTDOWN': '2000',
'CURL_DEBUG': 'ssl,tcp,lib-ids,multi'
})
curl = CurlClient(env=env, run_env=run_env)
port = env.port_for(alpn_proto=proto)
url = f'https://{env.domain1}:{port}/data.json?[0-1]'
r = curl.http_download(urls=[url], alpn_proto=proto, with_tcpdump=True, extra_args=[
'--parallel'
])
r.check_response(http_status=200, count=2)
assert r.tcpdump
assert len(r.tcpdump.get_rsts(ports=[port])) == 0, 'Unexpected TCP RST packets'
# run downloads where the server closes the connection after each request
@pytest.mark.parametrize("proto", ['http/1.1'])
def test_19_03_shutdown_by_server(self, env: Env, httpd, proto):
if not env.curl_is_debug():
pytest.skip('only works for curl debug builds')
count = 10
curl = CurlClient(env=env, run_env={
'CURL_GRACEFUL_SHUTDOWN': '2000',
'CURL_DEBUG': 'ssl,multi'
})
url = f'https://{env.authority_for(env.domain1, proto)}/curltest/tweak/?'\
f'id=[0-{count-1}]&with_cl&close'
r = curl.http_download(urls=[url], alpn_proto=proto)
r.check_response(http_status=200, count=count)
shutdowns = [line for line in r.trace_lines
if re.match(r'.*\[SHUTDOWN] shutdown, done=1', line)]
assert len(shutdowns) == count, f'{shutdowns}'
# run downloads with CURLOPT_FORBID_REUSE set, meaning *we* close
# the connection after each request
@pytest.mark.parametrize("proto", ['http/1.1'])
def test_19_04_shutdown_by_curl(self, env: Env, httpd, proto):
if not env.curl_is_debug():
pytest.skip('only works for curl debug builds')
count = 10
docname = 'data.json'
url = f'https://localhost:{env.https_port}/{docname}'
client = LocalClient(name='hx_download', env=env, run_env={
'CURL_GRACEFUL_SHUTDOWN': '2000',
'CURL_DEBUG': 'ssl,multi'
})
if not client.exists():
pytest.skip(f'example client not built: {client.name}')
r = client.run(args=[
'-n', f'{count}', '-f', '-V', proto, url
])
r.check_exit_code(0)
shutdowns = [line for line in r.trace_lines
if re.match(r'.*SHUTDOWN] shutdown, done=1', line)]
assert len(shutdowns) == count, f'{shutdowns}'
# run event-based downloads with CURLOPT_FORBID_REUSE set, meaning *we* close
# the connection after each request
@pytest.mark.parametrize("proto", ['http/1.1'])
def test_19_05_event_shutdown_by_server(self, env: Env, httpd, proto):
if not env.curl_is_debug():
pytest.skip('only works for curl debug builds')
count = 10
run_env = os.environ.copy()
# forbid connection reuse to trigger shutdowns after transfer
run_env['CURL_FORBID_REUSE'] = '1'
# make socket receives block 50% of the time to delay shutdown
run_env['CURL_DBG_SOCK_RBLOCK'] = '50'
run_env['CURL_DEBUG'] = 'ssl,multi,lib-ids'
curl = CurlClient(env=env, run_env=run_env)
url = f'https://{env.authority_for(env.domain1, proto)}/curltest/tweak/?'\
f'id=[0-{count-1}]&with_cl&'
r = curl.http_download(urls=[url], alpn_proto=proto, extra_args=[
'--test-event'
])
r.check_response(http_status=200, count=count)
# check that we closed all connections
closings = [line for line in r.trace_lines
if re.match(r'.*SHUTDOWN] (force )?closing', line)]
assert len(closings) == count, f'{closings}'
# check that all connection sockets were removed from event
removes = [line for line in r.trace_lines
if re.match(r'.*socket cb: socket \d+ REMOVED', line)]
assert len(removes) == count, f'{removes}'
# check graceful shutdown on multiplexed http
@pytest.mark.parametrize("proto", ['h2', 'h3'])
def test_19_06_check_shutdown(self, env: Env, httpd, nghttpx, proto):
if proto == 'h3' and not env.have_h3():
pytest.skip("h3 not supported")
if not env.curl_is_debug():
pytest.skip('only works for curl debug builds')
curl = CurlClient(env=env, run_env={
'CURL_GRACEFUL_SHUTDOWN': '2000',
'CURL_DEBUG': 'all'
})
url = f'https://{env.authority_for(env.domain1, proto)}/data.json?[0-1]'
r = curl.http_download(urls=[url], alpn_proto=proto, with_tcpdump=True, extra_args=[
'--parallel'
])
r.check_response(http_status=200, count=2)
# check connection cache closings
shutdowns = [line for line in r.trace_lines
if re.match(r'.*SHUTDOWN] shutdown, done=1', line)]
assert len(shutdowns) == 1, f'{shutdowns}'
# run connection pressure, many small transfers, not reusing connections,
# limited total
@pytest.mark.parametrize("proto", ['http/1.1'])
def test_19_07_shutdown_by_curl(self, env: Env, httpd, proto):
if not env.curl_is_debug():
pytest.skip('only works for curl debug builds')
count = 500
docname = 'data.json'
url = f'https://localhost:{env.https_port}/{docname}'
client = LocalClient(name='hx_download', env=env, run_env={
'CURL_GRACEFUL_SHUTDOWN': '2000',
'CURL_DEBUG': 'ssl,multi'
})
if not client.exists():
pytest.skip(f'example client not built: {client.name}')
r = client.run(args=[
'-n', f'{count}', # that many transfers
'-f', # forbid conn reuse
'-m', '10', # max parallel
'-T', '5', # max total conns at a time
'-V', proto,
url
])
r.check_exit_code(0)
shutdowns = [line for line in r.trace_lines
if re.match(r'.*SHUTDOWN] shutdown, done=1', line)]
# we see less clean shutdowns as total limit forces early closes
assert len(shutdowns) < count, f'{shutdowns}'
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