curl/tests/http/test_22_httpsrr.py
Stefan Eissing a973377cd7
dnsd: implement HTTPS-RR with alpn pref and no-default-alpn
Support HTTPS records in dnsd that have ALPN preferences.

Add pytest test_22_* to verify that HTTPS record ALPN
preferencces take effect if the HTTPS resolve arrives in time.

Fix HTTPS eyeballing use of timeouts for second attempt. Also,
make an initial HTTP/1.1 attempt switch off HTTP/2.

Closes #21329
2026-04-16 22:53:20 +02:00

134 lines
6.2 KiB
Python

#!/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
from datetime import timedelta
from typing import Generator
import pytest
from testenv import CurlClient, Env, LocalClient, Dnsd
log = logging.getLogger(__name__)
@pytest.mark.skipif(condition=not Env.curl_is_debug(), reason="needs curl debug")
@pytest.mark.skipif(condition=not Env.curl_override_dns(), reason="no DNS override")
@pytest.mark.skipif(condition=not Env.curl_has_feature('HTTPSRR'), reason="no HTTPSRR support")
class TestResolve:
@pytest.fixture(scope='class')
def dnsd(self, env: Env) -> Generator[Dnsd, None, None]:
dnsd = Dnsd(env=env)
assert dnsd.initial_start()
yield dnsd
dnsd.stop()
# dnsd a HTTPS-RR that prefers HTTP/1.1.
def test_22_01_httpsrr_h1(self, env: Env, httpd, dnsd):
dnsd.set_answers(addr_a=['127.0.0.1'],
https=['10 . alpn=http/1.1'])
run_env = os.environ.copy()
run_env['CURL_DNS_SERVER'] = f'127.0.0.1:{dnsd.port}'
run_env['CURL_DBG_AWAIT_HTTPSRR'] = '1'
run_env['CURL_QUICK_EXIT'] = '1'
run_env['CURL_DEBUG'] = 'dns,https-connect'
curl = CurlClient(env=env, run_env=run_env, force_resolv=False)
url = f'https://{env.authority_for(env.domain1, "http/1.1")}/data.json'
r = curl.http_download(urls=[url], with_stats=True)
r.check_exit_code(0)
r.check_stats(count=1, http_status=200, exitcode=0)
assert r.stats[0]['http_version'] == '1.1', f'{r}'
# dnsd a HTTPS-RR that prefers HTTP/2, this overrides the --http3 option.
@pytest.mark.skipif(condition=not Env.curl_override_dns(), reason="no DNS override")
@pytest.mark.skipif(condition=not Env.curl_has_feature('HTTPSRR'), reason="no HTTPSRR support")
@pytest.mark.skipif(condition=not Env.have_h3(), reason="missing HTTP/3 support")
def test_22_02_httpsrr_h3(self, env: Env, httpd, dnsd, nghttpx):
dnsd.set_answers(addr_a=['127.0.0.1'],
https=['10 . alpn=h2'])
run_env = os.environ.copy()
run_env['CURL_DNS_SERVER'] = f'127.0.0.1:{dnsd.port}'
run_env['CURL_DBG_AWAIT_HTTPSRR'] = '1'
run_env['CURL_QUICK_EXIT'] = '1'
run_env['CURL_DEBUG'] = 'dns,https-connect'
curl = CurlClient(env=env, run_env=run_env, force_resolv=False)
url = f'https://{env.authority_for(env.domain1, "http/1.1")}/data.json'
r = curl.http_download(urls=[url], with_stats=True, extra_args=[
'--http3'
])
r.check_exit_code(0)
r.check_stats(count=1, http_status=200, exitcode=0)
assert r.stats[0]['http_version'] == '2', f'{r}'
# dnsd a HTTPS-RR that prefers HTTP/3.
@pytest.mark.skipif(condition=not Env.have_h3(), reason="missing HTTP/3 support")
def test_22_03_httpsrr_h3(self, env: Env, httpd, dnsd, nghttpx):
dnsd.set_answers(addr_a=['127.0.0.1'],
https=['10 . alpn=h3,h2'])
run_env = os.environ.copy()
run_env['CURL_DNS_SERVER'] = f'127.0.0.1:{dnsd.port}'
run_env['CURL_DBG_AWAIT_HTTPSRR'] = '1'
run_env['CURL_QUICK_EXIT'] = '1'
run_env['CURL_DEBUG'] = 'dns,https-connect'
curl = CurlClient(env=env, run_env=run_env, force_resolv=False)
url = f'https://{env.authority_for(env.domain1, "http/1.1")}/data.json'
r = curl.http_download(urls=[url], with_stats=True)
r.check_exit_code(0)
r.check_stats(count=1, http_status=200, exitcode=0)
assert r.stats[0]['http_version'] == '3', f'{r}'
# dnsd a HTTPS-RR that prefers HTTP/1.1 for another target, so ignored.
def test_22_04_httpsrr_wrong_target(self, env: Env, httpd, dnsd):
dnsd.set_answers(addr_a=['127.0.0.1'],
https=['10 another alpn=http/1.1'])
run_env = os.environ.copy()
run_env['CURL_DNS_SERVER'] = f'127.0.0.1:{dnsd.port}'
run_env['CURL_DBG_AWAIT_HTTPSRR'] = '1'
run_env['CURL_QUICK_EXIT'] = '1'
run_env['CURL_DEBUG'] = 'dns,https-connect'
curl = CurlClient(env=env, run_env=run_env, force_resolv=False)
url = f'https://{env.authority_for(env.domain1, "http/1.1")}/data.json'
r = curl.http_download(urls=[url], with_stats=True)
r.check_exit_code(0)
r.check_stats(count=1, http_status=200, exitcode=0)
assert r.stats[0]['http_version'] == '2', f'{r}'
# dnsd a HTTPS-RR with no-default-alpn, ignored by curl for now
def test_22_05_httpsrr_no_default_alpn(self, env: Env, httpd, dnsd):
dnsd.set_answers(addr_a=['127.0.0.1'],
https=['10 . no-default-alpn alpn=http/1.1'])
run_env = os.environ.copy()
run_env['CURL_DNS_SERVER'] = f'127.0.0.1:{dnsd.port}'
run_env['CURL_DBG_AWAIT_HTTPSRR'] = '1'
run_env['CURL_QUICK_EXIT'] = '1'
run_env['CURL_DEBUG'] = 'dns,https-connect'
curl = CurlClient(env=env, run_env=run_env, force_resolv=False)
url = f'https://{env.authority_for(env.domain1, "http/1.1")}/data.json'
r = curl.http_download(urls=[url], with_stats=True)
r.check_exit_code(0)
r.check_stats(count=1, http_status=200, exitcode=0)
assert r.stats[0]['http_version'] == '2', f'{r}'