Fix autest compatibility with Fedora 43 / Python 3.14 #12857

bryancall · 2026-02-04T16:59:47Z

Summary

This PR fixes multiple autest compatibility issues that cause test failures on modern systems like Fedora 43 with Python 3.14 and OpenSSL 3.x.

Python 3.14 Compatibility Fixes

Fix kwargs.iteritems() → kwargs.items() in microserver.test.ext
Add missing os import in microserver.test.ext and conditions.test.ext
Add explicit UTF-8 encoding to socket decode() calls
Replace deprecated socket.error with OSError in ports.py
Add socket timeout to prevent recv() from hanging indefinitely

TLS Protocol Deprecation Fixes

Add HasLegacyTLSSupport() condition to detect TLSv1.0/TLSv1.1 support
Skip tls_client_versions tests on systems without legacy TLS support
Modern OpenSSL 3.x + Fedora crypto-policies disable TLSv1.0/TLSv1.1 by default
Detection uses actual TLS connection test to handle crypto-policy restrictions

Timing Improvements

Increase sleep duration in polite_hook_wait.cc from 200ms to 500ms to account for variable scheduling latency

Test Plan

Tested on:

Fedora 43 (Server Edition)
Python 3.14.2
GCC 15.2.1
OpenSSL 3.x with DEFAULT crypto-policy

Results:

TLS client_versions tests now properly skip instead of failing
Core autest functionality works correctly
No regressions observed

This commit addresses multiple compatibility issues that cause autests to fail on modern systems like Fedora 43 with Python 3.14 and OpenSSL 3.x: Python 3.14 compatibility: - Fix kwargs.iteritems() -> kwargs.items() in microserver.test.ext - Add missing 'os' import in microserver.test.ext and conditions.test.ext - Add explicit UTF-8 encoding to socket decode() calls - Replace deprecated socket.error with OSError in ports.py - Add socket timeout to prevent recv() from hanging indefinitely TLS protocol deprecation: - Add HasLegacyTLSSupport() condition to detect TLSv1.0/TLSv1.1 support - Skip tls_client_versions tests on systems without legacy TLS support - Modern OpenSSL 3.x disables TLSv1.0/TLSv1.1 by default Timing improvements: - Increase sleep duration in polite_hook_wait.cc from 200ms to 500ms to account for variable scheduling latency on different systems

On Fedora/RHEL systems with crypto-policies, TLSv1.0/TLSv1.1 may be disabled at the system level even though OpenSSL accepts the -tls1 flag. The previous check would incorrectly report TLSv1 as supported because 'openssl ciphers -v -tls1' returns ciphers (TLSv1.2/TLSv1.3) even when TLSv1.0 is disabled. This fix improves detection by parsing the cipher list output and checking if any cipher is specifically marked as TLSv1 or SSLv3 in the version column, rather than just checking if the command succeeds.

The previous check looked for TLSv1 ciphers in 'openssl ciphers' output, but on Fedora with crypto-policies, TLSv1 ciphers are still listed even though the protocol is disabled at runtime ("no protocols available"). This fix tests actual TLSv1 protocol availability by attempting an s_client connection and checking for the "no protocols available" error that indicates the protocol is blocked by system crypto-policy.

Testing TLSv1 against localhost:1 fails at TCP layer before reaching TLS, so "no protocols available" error is never shown. Need to connect to a real HTTPS server to properly detect crypto-policy restrictions.

Copilot

Pull request overview

This PR updates the autest gold-test infrastructure to better tolerate modern platforms (Fedora 43 / Python 3.14 / OpenSSL 3.x), primarily by addressing Python API deprecations, preventing socket hangs, and conditionally skipping legacy-TLS-dependent tests.

Changes:

Add a new HasLegacyTLSSupport() condition and use it to gate TLSv1.0/TLSv1.1 client-version tests.
Improve Python 3.14 compatibility in autest extensions (e.g., iteritems() removal, missing imports) and harden microserver socket reads (timeout + explicit UTF-8 decode).
Reduce timing flakiness in the polite hook wait plugin test by increasing the sleep delay.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tests/gold_tests/tls/tls_client_versions.test.py	Skip legacy-TLS tests when legacy TLS is unavailable.
tests/gold_tests/tls/tls_client_versions_minmax.test.py	Skip legacy-TLS tests when legacy TLS is unavailable.
tests/gold_tests/autest-site/conditions.test.ext	Add `HasLegacyTLSSupport()` condition for runtime legacy TLS detection.
tests/gold_tests/autest-site/microserver.test.ext	Python 3.14 fixes; add socket recv timeout and explicit UTF-8 decode.
tests/gold_tests/autest-site/ports.py	Update exception type from deprecated `socket.error` to `OSError`.
tests/gold_tests/pluginTest/polite_hook_wait/polite_hook_wait.cc	Increase sleep duration to reduce scheduling-related flakes.

Comments suppressed due to low confidence (1)

tests/gold_tests/autest-site/ports.py:84

PortOpen catches OSError before socket.timeout, but socket.timeout is a subclass of OSError, so the except socket.timeout block will never run. Swap the order (catch socket.timeout first) or drop the second handler to avoid dead code and ensure timeout-specific logging works.

    except OSError:
        host.WriteDebug(
            'PortOpen', f"socket error for port {port}, port is closed, "
            "and therefore a future connection can use it")
    except socket.timeout:
        host.WriteDebug(
            'PortOpen', f"Timeout error for port {port}, port is closed, "
            "and therefore a future connection can use it")

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Copilot · 2026-02-04T18:42:20Z

tests/gold_tests/autest-site/conditions.test.ext

+def HasLegacyTLSSupport(self):
+    """Check if the system supports legacy TLS protocols (TLSv1.0 and TLSv1.1).
+
+    Modern OpenSSL 3.x installations often disable these protocols entirely,
+    even if the openssl binary still accepts the -tls1 flag and lists TLSv1 ciphers.
+
+    On Fedora/RHEL systems, the crypto-policies framework may disable legacy
+    TLS at runtime even when OpenSSL is compiled with support for it. This
+    causes 'openssl ciphers -v -tls1' to still list TLSv1 ciphers, but actual
+    TLS 1.0 connections will fail with "no protocols available".
+
+    This check attempts to create an actual TLSv1 connection to a known HTTPS
+    server to detect if the protocol is truly available at runtime.
+    """
+
+    def check_tls1_support():
+        try:
+            # Try to actually use TLSv1 against a real HTTPS server
+            # This catches crypto-policy restrictions that aren't visible in cipher listings
+            # We use a well-known server that's likely to be reachable
+            result = subprocess.run(
+                ['openssl', 's_client', '-tls1', '-connect', 'www.google.com:443'],
+                capture_output=True,
+                text=True,
+                timeout=10,
+                input=''  # Don't wait for input
+            )
+            # Combine stdout and stderr for checking
+            output = result.stdout + result.stderr
+            # If we get "no protocols available", TLSv1 is disabled by policy
+            if 'no protocols available' in output:
+                return False
+            # If we get a successful connection or a server-side TLS version mismatch,
+            # it means TLSv1 is enabled on this client
+            return True
+        except subprocess.TimeoutExpired:
+            # If network is slow but TLSv1 was attempted, assume it's available
+            return True
+        except Exception:
+            # If we can't determine, assume TLSv1 is not available (safer)
+            return False


HasLegacyTLSSupport shells out to openssl s_client against www.google.com:443, which makes the test outcome depend on external network/DNS availability and the remote server’s configuration. In offline/locked-down CI this can lead to long timeouts or incorrect results (especially since TimeoutExpired currently returns True). Prefer an offline/local capability check (e.g., attempt to create a TLSv1/TLSv1.1 context with the ssl module, or run openssl s_client -tls1 against localhost and treat connection-refused as "protocol available" but policy-disabled errors as unsupported), and treat timeouts as "unsupported" to avoid false positives.

Copilot · 2026-02-04T18:42:21Z

tests/gold_tests/autest-site/conditions.test.ext

+def HasLegacyTLSSupport(self):
+    """Check if the system supports legacy TLS protocols (TLSv1.0 and TLSv1.1).
+
+    Modern OpenSSL 3.x installations often disable these protocols entirely,
+    even if the openssl binary still accepts the -tls1 flag and lists TLSv1 ciphers.
+
+    On Fedora/RHEL systems, the crypto-policies framework may disable legacy
+    TLS at runtime even when OpenSSL is compiled with support for it. This
+    causes 'openssl ciphers -v -tls1' to still list TLSv1 ciphers, but actual
+    TLS 1.0 connections will fail with "no protocols available".
+
+    This check attempts to create an actual TLSv1 connection to a known HTTPS
+    server to detect if the protocol is truly available at runtime.
+    """
+
+    def check_tls1_support():
+        try:
+            # Try to actually use TLSv1 against a real HTTPS server
+            # This catches crypto-policy restrictions that aren't visible in cipher listings
+            # We use a well-known server that's likely to be reachable
+            result = subprocess.run(
+                ['openssl', 's_client', '-tls1', '-connect', 'www.google.com:443'],
+                capture_output=True,
+                text=True,
+                timeout=10,
+                input=''  # Don't wait for input
+            )
+            # Combine stdout and stderr for checking
+            output = result.stdout + result.stderr
+            # If we get "no protocols available", TLSv1 is disabled by policy
+            if 'no protocols available' in output:
+                return False
+            # If we get a successful connection or a server-side TLS version mismatch,
+            # it means TLSv1 is enabled on this client
+            return True


This condition claims to check TLSv1.0 and TLSv1.1 support, but it only probes -tls1. Either also probe -tls1_1 (and require both, if that’s what the tests need) or rename/update the messaging so it matches what is actually being detected.

Copilot · 2026-02-04T18:42:21Z

tests/gold_tests/tls/tls_client_versions.test.py

 # for special domain foo.com only offer TLSv1 and TLSv1_1

 Test.SkipUnless(Condition.HasOpenSSLVersion("1.1.1"))
+Test.SkipUnless(Condition.HasLegacyTLSSupport(), "This test requires TLSv1.0/TLSv1.1 support which is disabled on modern systems")


This SkipUnless call passes a second positional string argument. In this repository, Test.SkipUnless(...) is only used with Condition objects (optionally multiple), not a separate reason string (see e.g. tests/README.md:328-331). If SkipUnless doesn’t accept a reason parameter, this will raise at runtime or be treated as an invalid condition. Consider relying on Condition.HasLegacyTLSSupport()’s own failure message (or extend the condition message) instead of passing a raw string here.

Suggested change

Test.SkipUnless(Condition.HasLegacyTLSSupport(), "This test requires TLSv1.0/TLSv1.1 support which is disabled on modern systems")

Test.SkipUnless(Condition.HasLegacyTLSSupport())

Copilot · 2026-02-04T18:42:21Z

tests/gold_tests/tls/tls_client_versions_minmax.test.py

 # for special domain foo.com only offer TLSv1 and TLSv1_1

 Test.SkipUnless(Condition.HasOpenSSLVersion("1.1.1"))
+Test.SkipUnless(Condition.HasLegacyTLSSupport(), "This test requires TLSv1.0/TLSv1.1 support which is disabled on modern systems")


This SkipUnless call passes a second positional string argument. In this repository, Test.SkipUnless(...) is only used with Condition objects (optionally multiple), not a separate reason string (see e.g. tests/README.md:328-331). If SkipUnless doesn’t accept a reason parameter, this will raise at runtime or be treated as an invalid condition. Consider relying on Condition.HasLegacyTLSSupport()’s own failure message (or extend the condition message) instead of passing a raw string here.

Suggested change

Test.SkipUnless(Condition.HasLegacyTLSSupport(), "This test requires TLSv1.0/TLSv1.1 support which is disabled on modern systems")

Test.SkipUnless(Condition.HasLegacyTLSSupport())

- Replace www.google.com:443 with 127.0.0.1:1 to avoid external network dependency in CI environments. Connection refused means TLSv1 protocol is available; "no protocols available" means crypto-policy blocks it. - Fix TimeoutExpired to return False (not True) since timeout on localhost indicates something is wrong, not that TLSv1 is available. - Remove invalid reason string from SkipUnless calls -- SkipUnless only accepts Condition objects, not extra string arguments. The skip reason is already embedded in the Condition definition. - Add docstring rationale for why only TLSv1.0 is probed (crypto-policies always disable TLSv1.0 and TLSv1.1 together).

bryancall · 2026-02-08T18:44:20Z

Review Feedback Response

Addressed Copilot's comments in commit 20a8baf.

Fixed

#	Comment	Fix
1	HasLegacyTLSSupport connects to www.google.com:443, depends on external network	Replaced with `127.0.0.1:1` (localhost, closed port). "Connection refused" = TLSv1 available, "no protocols available" = blocked by crypto-policy. No network dependency.
2	TimeoutExpired returns True (false positive)	Changed to return False -- timeout on localhost means something is wrong, not that TLSv1 works
3	SkipUnless in tls_client_versions.test.py passes invalid reason string	Removed the string arg. SkipUnless only accepts Condition objects; the reason is already in the Condition definition.
4	SkipUnless in tls_client_versions_minmax.test.py passes invalid reason string	Same fix as above

Not Fixed (with rationale)

#	Comment	Reason
1	Only probes TLSv1.0, not TLSv1.1	Crypto-policies (Fedora DEFAULT, RHEL DEFAULT, etc.) always disable TLSv1.0 and TLSv1.1 together. Testing one is sufficient. Added docstring explaining this rationale.

bryancall added 5 commits February 4, 2026 07:07

Fix HasLegacyTLSSupport to use real HTTPS server for detection

c0d0b29

Testing TLSv1 against localhost:1 fails at TCP layer before reaching TLS, so "no protocols available" error is never shown. Need to connect to a real HTTPS server to properly detect crypto-policy restrictions.

tests: apply yapf formatting

9b0c9a4

bryancall self-assigned this Feb 4, 2026

bryancall added this to the 10.2.0 milestone Feb 4, 2026

bryancall added the AuTest label Feb 4, 2026

bryancall requested a review from Copilot February 4, 2026 18:36

Copilot started reviewing on behalf of bryancall February 4, 2026 18:36 View session

Copilot AI reviewed Feb 4, 2026

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bryancall requested a review from bneradt February 9, 2026 23:15

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Fix autest compatibility with Fedora 43 / Python 3.14 #12857

Fix autest compatibility with Fedora 43 / Python 3.14 #12857

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	Test.SkipUnless(Condition.HasLegacyTLSSupport(), "This test requires TLSv1.0/TLSv1.1 support which is disabled on modern systems")
	Test.SkipUnless(Condition.HasLegacyTLSSupport())

Fix autest compatibility with Fedora 43 / Python 3.14 #12857

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Fix autest compatibility with Fedora 43 / Python 3.14 #12857

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bryancall commented Feb 4, 2026

Summary

Python 3.14 Compatibility Fixes

TLS Protocol Deprecation Fixes

Timing Improvements

Test Plan

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Reviewed changes

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bryancall commented Feb 8, 2026

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Fixed

Not Fixed (with rationale)

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