v2.0: Modernization (M1-M6, 44 tasks)#374
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #374 +/- ##
==========================================
- Coverage 68.03% 67.08% -0.96%
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Files 34 30 -4
Lines 1730 2579 +849
Branches 697 1006 +309
==========================================
+ Hits 1177 1730 +553
- Misses 80 186 +106
- Partials 473 663 +190
... and 4 files with indirect coverage changes Continue to review full report in Codecov by Sentry.
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…rueFalse, exclude specs/ Codacy was reporting 2018 new issues on the v2.0 PR (#374). Resolve as follows: * Add .codacy.yaml excluding specs/** — the product spec, architecture notes, task records, and review notes are internal groundwork artifacts, not user-facing docs, and should not be subject to README markdownlint rules. Removes 2003 markdownlint findings. * src/webserver.cpp:499 — drop the redundant `blocking &&` from the wait loop condition. `blocking` is a function parameter never reassigned inside the loop body, so the conjunct was tautological (cppcheck knownConditionTrueFalse). * src/webserver.cpp:946 — replace the C-style `(struct detail::modded_request*)` cast on the MHD `cls` void* with `static_cast<detail::modded_request*>` (cppcheck cstyleCast). Mirrors the existing static_cast usage elsewhere in the file. * detail/webserver_impl.hpp, detail/http_request_impl.hpp, iovec_entry.hpp — add `// cppcheck-suppress-file unusedStructMember` with a one-line rationale comment. Every flagged member is in fact heavily used from the corresponding .cpp translation unit (registered_resources*, route_cache_*, bans, allowances, files_, path_pieces_public_, iovec_entry::base/len, etc.); cppcheck analyses each TU in isolation and cannot see those uses, so the warning is a known pimpl/POD false positive. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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… clash Two unrelated CI regressions on PR #374, both falling out of TASK-020: 1. Lint job (gcc-14, ubuntu): cpplint flagged src/http_utils.cpp:30 with build/include_order, because the matching public header ("httpserver/http_utils.hpp") came AFTER a non-matching project header ("httpserver/constants.hpp"), and <microhttpd.h> (a C system header in cpplint's view) followed both. cpplint's expected order is: matching header, C system, C++ system, other. Reorder so the matching header comes first and the project headers ("constants.hpp" / "string_utilities.hpp") move to the bottom of the include block. 2. Windows MSYS2 build: src/httpserver/http_utils.hpp failed with error: expected identifier before numeric constant at the line `ERROR = 0,` inside the digest_auth_result enum. <wingdi.h> (pulled in via <windows.h> via <winsock2.h> via <microhttpd.h> on MinGW) unconditionally `#define`s ERROR to 0, and the preprocessor expands macros inside scoped-enum bodies just like anywhere else. Pre-TASK-020 the enum was inside `#ifdef HAVE_DAUTH`, so MSYS2 builds without digest auth never compiled it; PRD-FLG-REQ-001 then made the enum unconditional and exposed the latent collision. v2.0 is unreleased, so renaming is safe: ERROR -> GENERIC_ERROR (matches MHD_DAUTH_ERROR's "general error" docs). Static-assert pin in src/http_utils.cpp updated to match. Verified locally: - python3 -m cpplint on both touched files: exit 0. - `make check` on macOS: 32/32 PASS, all check-hygiene / check-headers gates PASS. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
etr
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Codacy's "26 new issues (0 max.)" gate was failing on PR #374. Two classes of finding, addressed at root: - 21 markdownlint findings on test/REGRESSION.md (MD013 line-length, MD040 fenced-code language, MD043 heading structure). REGRESSION.md is an internal test-gate document (the v2.0 routing parity gate), conceptually peer to the already-excluded specs/ artifacts and not in the user-facing README/ChangeLog/CONTRIBUTING category. Extend .codacy.yaml exclude_paths with `test/**/*.md`. - 5 cppcheck findings that are all single-TU false positives: * iovec_entry.hpp: `cppcheck-suppress-file unusedStructMember` was not at the top of the file (preprocessorErrorDirective), so the file-level suppression was ignored and `base`/`len` were both flagged unused. Replaced with per-member inline suppressions. * route_cache.hpp: `cache_value::captured_params` is read in src/webserver.cpp at the cache-hit replay site; cppcheck does not follow the cross-TU read. Inline-suppress. * header_hygiene_test.cpp: cppcheck statically assumes none of the forbidden-header guard macros are defined and reports `leaks > 0` as always-false; the comparison is load-bearing at runtime under any actual leak. Inline-suppress. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…56 pin libmicrohttpd downloads), correctness (make -C test consumer_fixture so CI builds in build/test/), and coverage (pin remaining unconditional TLS credential-material setters in consumer_fixture). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…rch §9 testing item 2)
…tizer-flag fix
Adds test/unit/http_response_move_sanitizer_test.cpp — the v2.0
sanitizer canary for http_response move ops (DR-005, AR-004,
PRD-RSP-REQ-001 / PRD-RSP-REQ-007). Complements the existing whitebox
SBO test (http_response_sbo_test.cpp) by:
* Driving all four move-assign cases plus both move-ctor cases via
factory-constructed responses (string / empty / file), exercising
the public API rather than placement-new'ing bodies through the
SBO friend hook.
* Covering the heap-fallback branch in adopt_body_from /
destroy_body with a synthetic >64 B body subclass (fat_body) —
no production body currently exceeds the SBO budget, so this is
the first test that genuinely exercises the heap-pointer-swap
path. fat_body is placed through the same friend hook the SBO
test uses; no production-API widening.
* Pinning the moved-from invariant contract: a moved-from
http_response is destructible, accessor-safe (get_status / kind
/ get_header / get_headers().size() etc. are well-defined), and
re-assignable (a fresh response can be move-assigned into it).
* Adding a file_body move-ctor case so the hand-written fd-ownership
transfer in file_body is sanitizer-exercised.
Each cycle is non-tautological — verified by injecting deliberate
bugs into adopt_body_from (force inline branch on heap path) and
destroy_body (skip ~body on heap path) and confirming the
corresponding heap-path assertions and dtor-counter checks fired.
Implementation restored after RED verification.
Also fixes a long-standing typo in .github/workflows/verify-build.yml
(lines 656-660): `CXXLAGS` -> `CXXFLAGS` across the asan / msan /
lsan / tsan / ubsan lanes, plus a duplicated `export export` on the
ubsan line. Before this fix, autoconf did not honour the C++ flag
(CXXLAGS is not a recognized variable), so the sanitizer runtime
libs were linked but C++ TUs were compiled without -fsanitize=...
The matrix names were unchanged but the lanes were no-ops on the
library code. The fix is invisible at the matrix-surface level; any
sanitizer findings in unrelated code after this commit are
pre-existing issues the CI was silently letting through, not
regressions introduced here.
Local verification:
* make check (debug build, all 48 testsuite entries): PASS
* ASan rebuild + http_response_move_sanitizer: 60/60 checks PASS
* UBSan rebuild + http_response_move_sanitizer: 60/60 checks PASS
* cpplint: clean
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…ings (1 major, 27 minor). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…s (PRD-RSP-REQ-001, PRD-RSP-REQ-007, arch §9 testing item 3)
…p_resource)
Adds a `make bench` target (separate from `make check`) that runs two
microbenchmarks verifying the two PRD §3.6 numeric acceptance criteria:
* bench_get_headers -- PRD-REQ-REQ-001: v2.0 get_headers() is
>=10x faster than v1's. Measured: ~230x
on the maintainer reference host.
* bench_sizeof_http_resource -- PRD-REQ-REQ-003: sizeof(http_resource)
shrunk by ~the empty std::map footprint
after the method_set refactor. Pure
compile-time static_assert.
The v1 baseline literals live in test/v1_baseline/v1_constants.hpp,
sampled once on master (d8b055e) and committed with the host metadata
that produced them. test/v1_baseline/measure_v1_sizes.cpp and
measure_v1_get_headers.cpp ship in EXTRA_DIST as the re-measurement
recipe; they are not built by `make bench` or `make check`. The full
methodology (warmup, 10x1M timing loop with steady_clock + asm-volatile
sink, libstdc++ vs libc++ caveats) is documented in
test/PERFORMANCE.md, alongside the rationale for keeping bench out of
the sanitizer-gated CI matrix.
Notes on the static_assert algebra: TASK-039's literal task wording
suggests `sizeof(http_resource) <= V1_SIZEOF - V1_MAP_SIZEOF`. That
formula fails on every stdlib because v2.0 added a small method_set
member to replace the map. The committed assertion encodes the
mathematically correct contract -- "the removed map saved at least
its empty footprint, less the new method_set field" -- and a tighter
strict-shrinkage check (sizeof(http_resource) < V1_HTTP_RESOURCE_SIZEOF)
as belt-and-suspenders. The divergence from the task wording is
called out in PERFORMANCE.md "Why not the literal task formulation".
Verified:
- make check: 48/48 PASS, no bench binaries invoked.
- make bench (release -O3): bench_sizeof_http_resource passes static_assert;
bench_get_headers reports ratio=226-403x (well above 10x threshold).
- make bench (debug -O0 -Werror -Wextra -pedantic): clean compile, ratio=134x.
- cpplint: 0 errors on all new files.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Addresses one critical and two major findings from performance-reviewer: * v1_constants.hpp: select V1_HTTP_RESOURCE_SIZEOF and V1_STD_MAP_STRING_BOOL_SIZEOF per stdlib (libstdc++: 56/48, libc++: 32/24). The previous single-platform literals would have made the sizeof static_assert algebra silently incorrect on libstdc++ hosts. * bench_get_headers.cpp: OUTER 10 -> 11 so samples_ns[OUTER/2] is the true median element rather than the lower of the two middle samples. * measure_v1_get_headers.cpp: pass &value (not value) through the asm read-or-memory constraint; required for non-trivial class objects to pin the address rather than try to load the whole struct. * PERFORMANCE.md + bench_sizeof_http_resource.cpp: methodology and comments updated to match the new OUTER count and the per-stdlib baseline values. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…of(http_resource) (PRD-REQ-REQ-001, PRD-REQ-REQ-003, PRD §3.6)
* Replace examples/hello_world.cpp with a 9-LOC lambda demo that satisfies the PRD §3.4 acceptance criterion (no http_resource subclass, no raw pointer, blocking start(true), <=10 LOC). * Add examples/shared_state.cpp -- the canonical example of when the class form is the right shape: an http_resource holding an int + std::mutex shared between render_get and render_post (PRD-HDL-REQ-005, AR-006). * Port the trivial single-method examples (handlers, hello_with_get_arg, setting_headers, custom_access_log, minimal_ip_ban, minimal_file_response, turbo_mode, daemon_info, minimal_https, minimal_https_psk, basic_authentication, digest_authentication, iovec_response_example, pipe_response_example, external_event_loop) to on_get / lambda form. * url_registration: lambda for stateless routes; keep one resource for the prefix + regex registration that on_* does not cover. * centralized_authentication: lambdify the two trivial resources; keep the free-function auth_handler. * Delete examples/minimal_hello_world.cpp -- superseded by the new hello_world.cpp (no v1-only files existed; this is an idiom-replacement, not v1 cleanup). * Rewrite examples/README.md as a categorized map of the suite, used as the input for TASK-041. * Add scripts/check-examples.sh -- static guard for hello_world LOC and shared_state structure. Wired into the top-level Makefile.am as a new check-examples target invoked by check-local, so it runs every `make check`. * Add scripts/verify-installed-examples.sh -- compiles every example against an installed prefix (the "consumer view" of the v2.0 headers). Verified: make check is 48/48 passing; scripts/check-examples.sh and scripts/verify-installed-examples.sh both green; release and --enable-debug (-Werror -Wextra) builds of every example are clean. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Round of fixes from the validation loop on top of the initial rewrite: * Add `override` to every render_* declaration across the resource-form examples (allowing_disallowing_methods, args_processing, service, file_upload, file_upload_with_callback, deferred_with_accumulator) so signature drift is caught at compile time, matching the pattern that shared_state.cpp already established. * deferred_with_accumulator.cpp: switch the closure capture to `std::make_shared`, drop the stale `sleep(1)` migration comment, and keep the accumulator self-contained. * binary_buffer_response.cpp: replace 'string_response' references in the introductory comments with `http_response::string(...)` so the prose matches the v2.0 API. * centralized_authentication.cpp: clean up the trailing usage block and align the env-var pattern with the rest of the auth examples. * basic_authentication / digest_authentication / minimal_https / minimal_https_psk: tighten the v2.0 idiom (smart-ptr ownership, consistent `with_*` chains, lambda where the class form added no value), document the TLS priority-string choice on the PSK example. * empty_response_example.cpp / minimal_deferred.cpp / hello_with_get_arg.cpp: trim redundant comments and tighten string handling. * service.cpp / url_registration.cpp / args_processing.cpp / file_upload[_with_callback].cpp: drop superfluous includes and comments, prefer `std::make_unique` and string assembly without per-+ temporaries. * scripts/check-examples.sh — add `set -eo pipefail`, validate the LOC counter, guard the disk-to-Makefile.am glob with `nullglob`, and document the `noinst_PROGRAMS` single-line assumption. * scripts/verify-installed-examples.sh — `trap` cleanup of the mktemp prefix, surface make-install stderr on failure, rename the hard-abort helper to `fatal`, assert that at least one example was compiled so a broken AM_CXXFLAGS parse cannot silent-pass. * specs/tasks/M6-release/TASK-040.md and specs/tasks/_index.md: mark the task Done and tick the action items. Verified: `make check` 48/48 passing, `scripts/check-examples.sh` and `scripts/verify-installed-examples.sh` both green, release and `--enable-debug` builds of every example clean. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Snapshot of the final validation-loop report — one major and 81 minor items that were knowingly left for follow-up (cosmetic style nits, documentation-only examples, ergonomic improvements to the verify script, and a single architecture finding on empty_response_example.cpp where the example exposes `MHD_RF_HEAD_ONLY_RESPONSE`; addressing it cleanly requires a libhttpserver-native HEAD-only flag that does not yet exist in the public API). No criticals. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…D §3.4, PRD-HDL-REQ-001..006) Three commits on task/TASK-040: 1. Rewrite the example suite to v2.0 idioms (`on_get` + lambda where it shines, `http_resource` class form with `std::make_unique` where shared state belongs in a class), add hello_world.cpp (≤10 LOC) and shared_state.cpp as the canonical pair, plus scripts/check-examples.sh (wired into `make check`) and scripts/verify-installed-examples.sh (compiles every example against an installed prefix to validate the consumer view of the v2.0 headers). 2. Validation-loop fixes: `override` everywhere, `make_shared` consistency, comment hygiene, hardened CI scripts (`set -eo pipefail`, mktemp trap cleanup, asserted compile count). 3. Snapshot of the unworked findings (1 major, 81 minor, 0 critical). Verified: `make check` 48/48 green, `scripts/check-examples.sh` and `scripts/verify-installed-examples.sh` both green on release and `--enable-debug` builds of every example.
Replace the 2,838-line v1 reference manual with a ~330-line v2-only
introduction. The new README leads with the byte-for-byte
hello_world.cpp snippet (PRD §3.4 lambda form), then introduces:
- Build / install (C++20 floor, RHEL 9 gcc-toolset-14 note, SOVERSION 2)
- Hello world (lambda form, walking the 10-line snippet)
- Class-form handlers (when http_resource is the right shape)
- Request (string_view getters + lifetime contract + TLS accessors)
- Response (seven factories + fluent with_* chaining)
- Routing (on_*/route/register_path/register_prefix; method_set)
- Threading contract (DR-008 / §5.1 distilled; stop_and_wait deadlock)
- Error propagation (DR-009 / §5.2 distilled; internal_error_handler;
feature_unavailable; no throw-as-status idiom)
- Feature availability (§7 table; features() probe; block_ip/unblock_ip)
- WebSocket (register_ws_resource unique_ptr/shared_ptr overloads)
- Migrating from v1 (one-paragraph pointer to RELEASE_NOTES.md)
Add scripts/check-readme.sh — a static-source CI gate that asserts:
A1. The first ```cpp block in README.md is byte-for-byte equal to
examples/hello_world.cpp.
A2. README.md contains no v1-era tokens (sweet_kill, *_response
subclasses, no_* setters, render_GET-style virtuals,
ban_ip/allow_ip family, raw-pointer registration).
A3. README.md mentions every load-bearing v2 surface (26 tokens).
A4. Threading and Error-propagation sections cite §5.1/DR-008 and
§5.2/DR-009 and mention stop_and_wait + deadlock,
internal_error_handler, and feature_unavailable.
A5. All eleven structural ## sections from the task action items exist.
A6. Cross-links to examples/ and RELEASE_NOTES.md are present.
Plus markdown sanity: balanced ``` fences, exactly one H1, no tabs in
fenced code blocks. The script also runs markdownlint advisory-only if
present on PATH.
Wire scripts/check-readme.sh into EXTRA_DIST so it ships with `make dist`
(verified). Full `make check` continues to pass — 48/48 tests green;
all header-hygiene and install-layout gates pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Validation iter 1 + iter 2 fixes: - Makefile.am: wire scripts/check-readme.sh into check-local via a check-readme target (matches TASK-040 check-examples pattern). - README.md: correct threading section to name stop() per DR-008/§5.1; fix error-propagation wording per DR-009 and rename error_logger to log_error. - scripts/check-readme.sh: enable strict mode (set -euo pipefail); add A6b relative-Markdown-link existence check; align A4 with the README's stop() wording; simplify S3 from inverted if/then/else. - specs/tasks/M6-release/TASK-041.md: tick all action items and move status to Done. - specs/tasks/_index.md: reflect TASK-041 Done. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…mentation NFR, AR-006, AR-007) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds RELEASE_NOTES.md as a one-stop v1→v2.0 porting guide: TL;DR,
"What's gone" / "What's new" / "What's renamed" (table form so v1 users
can grep for any old name and find its replacement on the same line),
"What changed semantically", "Threading", "Error propagation", "Build
prerequisites", and "SOVERSION and packaging". Explicitly flagged as
informational, not a compatibility commitment.
Adds scripts/check-release-notes.sh — the gate that drove the writing.
It is modelled on scripts/check-readme.sh (same structure, same fail()
helper, same set -euo pipefail discipline) and enforces:
A1 RELEASE_NOTES.md exists at REPO_ROOT.
A2 Every required v1-era token appears at least once (32 tokens).
A3 Every required v2-era token appears at least once (26 tokens,
kept in lock-step with check-readme.sh A3).
A4 The seven required H2 sections exist (case-insensitive).
A5 Each high-value (v1 → v2) rename pair appears on the same line
(25 pairs — this is the load-bearing "v1 user can grep for any
v1 method name and find what replaced it" acceptance criterion).
A6 The Threading and Error-propagation sections cite the architecture
sources (DR-008 / §5.1 and DR-009 / §5.2 respectively).
A7 An explicit "not a compatibility commitment" disclaimer.
S1-S3 Markdown sanity (balanced fences, one H1, no tabs in fences).
The four "Major" learnings from TASK-041's unworked review are applied:
- `set -euo pipefail` from line 1 (not just `set -u`).
- Wired into Makefile.am: new `check-release-notes:` target in EXTRA_DIST,
in `.PHONY`, and prerequisite of `check-local` alongside
`check-headers check-examples check-readme`.
- Empty section-body guards before the citation greps (mirror the
`[ -z "$thread_body" ]` guard).
- LF-only line-ending assumption documented in the script header.
`make check` is green end to end: 48 tests pass, all four check-*
scripts pass, header hygiene and install layout clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Applies the load-bearing review findings on scripts/check-release-notes.sh
that materially affect what the gate catches:
- A5 allow_ip pair: anchor v1 names with \b so the 'disallow_ip' prose
line cannot satisfy the allow_ip check via substring overlap.
Mirror the same anchoring on ban_ip for consistency.
- A2 v1 token set: add DEFAULT_WS_TIMEOUT, decorate_response, and
enqueue_response — RELEASE_NOTES.md already mentions them, but
they were not pinned by the gate.
- A5 rename pairs: add 'webserver(create_webserver const&)' pair so
the explicit-constructor rename is enforced on a single line.
Refactor: extract three helpers — check_tokens_present (A2/A3 loops),
extract_section_body (was inline), and check_section_cites (A6 pair) —
to remove the duplicated "loop + accumulate missing + print + exit"
shape and the duplicated "extract section + empty guard + grep + fail"
shape. No behavior change beyond the additions above.
Minor: drop a no-op `${var:-0}` default inside `$((…))`, silence the
markdownlint advisory's stderr explicitly (was '2>&1' which folded
error lines into the discarded stream), and add a why-not-shared note
above REQUIRED_V2_TOKENS explaining the deliberate duplication with
check-readme.sh.
`./scripts/check-release-notes.sh` still passes:
A1 exists; A2 35 v1 tokens; A3 26 v2 tokens; A4 7 sections;
A5 26 rename pairs; A6 threading+error citations; A7 disclaimer.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Captures the multi-agent review output that wasn't addressed in the validation-fix commit. The two "Major" items map to the changes that were applied (A5 allow_ip word-boundary anchor; v2-token duplication between check-readme.sh and check-release-notes.sh — kept duplicated on purpose, see the comment added above REQUIRED_V2_TOKENS). The 23 "Minor" items are style/polish or low-priority hardening notes left for a future pass. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
… NFR, §13 documentation deliverable)
Refresh public-header doxygen blocks to match the v2.0 surface, and add a make-check gate (check-doxygen.sh) that fails on any substantive doxygen warning. The gate is wired into check-local via Makefile.am following the precedent established by TASK-040/041/042. Substantive doxygen-source warnings fixed (17 → 0): * `webserver.hpp` register_path/register_prefix/register_ws_resource: the shared_ptr overloads used `@copydoc <template-overload>` followed by an `@param res` override, which doxygen flags as "too many @param". Replace the @copydoc with a fresh self-contained block on each overload (same prose, no duplicate @param). * `http_request.hpp` check_digest_auth / check_digest_auth_digest: add explicit @param blocks for realm/password/nonce_timeout/max_nc/algo on check_digest_auth, and replace the @copydoc-based block on check_digest_auth_digest with a self-contained one (copydoc was inheriting `password` which is not in the digest variant's signature). * `http_request.hpp` get_or_create_file_info: add missing `@param key`. * `http_resource.hpp` render: name the previously-anonymous `req` parameter so the `@param req` in the doc block resolves. * `http_utils.hpp` get_ip_str: drop the stale `@param maxlen` block left over from the v1 two-arg signature. * `http_utils.hpp` header_comparator::operator() and arg_comparator:: operator(): rename `@param first/second` to match the actual `x, y` signature, and document the case-sensitivity contract on the arg variant. Acceptance-criterion content (per the task action items): * AC bullet 3 — threading: add a `### Threading contract (DR-008 / §5.1)` block on the `webserver` class summarising the 5-point contract (re-entrant registration; stop/destructor must not run on a handler thread; per-request http_request; exclusive http_response; concurrent user callbacks). * AC bullet 4 — error propagation: add a load-bearing block on `create_webserver::internal_error_handler` that spells out the DR-009 §5.2 6-point contract verbatim, cross-linking to @ref webserver, not_found_handler, method_not_allowed_handler, feature_unavailable. Also document `internal_error_handler_t` (the typedef) explaining the std::string_view ownership rules. * AC bullet 5 — feature_unavailable throw sites: enumerate the throw sites on the feature_unavailable class itself (webserver ctor for TLS/BAUTH/DAUTH, register_ws_resource / unregister_ws_resource for HAVE_WEBSOCKET, and every send_* / close on websocket_session). * AC bullet 2 — cross-links: `@see` pairs added between block_ip ↔ unblock_ip, register_path ↔ register_prefix, the unregister_* family, register_ws_resource ↔ unregister_ws_resource, and the three error-handler setters. * Class-level docs added on `create_webserver` (fluent-builder contract, eager validation, explicit webserver ctor), and on `websocket_session` / `websocket_handler` (per-method param/return/ throws blocks including the HAVE_WEBSOCKET-off feature_unavailable behaviour). Verification: * `make check` green (48 testsuite entries pass; check-headers, check-examples, check-readme, check-release-notes, check-doxygen, check-install-layout, check-hygiene all PASS). * `make doxygen-run` now produces zero substantive warnings; the remaining stderr lines (obsolete config tags, dot/graphviz env artifacts when graphviz is missing) are explicitly filtered by scripts/check-doxygen.sh. * Spot-check on 11 v2.0-renamed/reshaped public methods (register_path, register_prefix, internal_error_handler, block_ip, unblock_ip, route, on_get, use_ssl, basic_auth, register_ws_resource, feature_unavailable) — each has a current `///` or `/**` block with @param/@return/@see reflecting the v2.0 signature. The gate skips with exit 0 when doxygen is not installed (mirrors the tolerance pattern used by the other check-* scripts); in CI the gate runs whenever the doxygen package is present. PRD §2 documentation NFR; §13 documentation deliverable. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…R, §13 documentation deliverable)
finalize_answer now unconditionally routes through the v2 resolver (no flag). The v1 resolver body and its four helpers (lookup_route_cache, scan_regex_routes, store_route_cache, apply_extracted_params) are deleted together with the v1 LRU cache (route_cache_list / route_cache_map / route_cache_mutex_) and the regex_route_lookup / regex_route_scan_hit carrier structs. The v2 resolver is renamed in place from resolve_resource_for_request_v2 to resolve_resource_for_request — there is now a single dispatch resolver. invalidate_route_cache() collapses to a single route_lru_cache.clear() since the v1 cache is gone. The lock-order comments in webserver_register.cpp / webserver_routes.cpp are refreshed: the order is now registration mutex (registered_resources_mutex) -> route_table_mutex_ -> route_lru_cache's internal mutex. The route_cache_v2 field is renamed to route_lru_cache, dropping the TODO(Cycle K) marker — this was the rename the v2.0 plan deferred to the dispatch cutover, and the cutover landed here. The class itself stays named `route_cache` (only the field rename is in scope per the plan). The five v1-side registration-time maps (registered_resources / _str / _regex + registered_resources_mutex) are intentionally retained: prepare_or_create_lambda_shim reads registered_resources for lambda+class conflict detection and the WebSocket dispatch path uses registered_resources_mutex. Both are non-dispatch concerns; their removal is its own follow-up task (see TASK-053 §11). The header block comment is updated to make the "registration-only after TASK-053" status explicit. All v2_dispatch_contract, routing_regression, lookup_pipeline, route_table_concurrency, hooks_route_resolved_miss_and_hit, webserver_register_path_prefix, webserver_on_methods, webserver_route suites pass. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
After step 3 cut finalize_answer over to lookup_v2() directly,
basic_suite has four integration-level tests whose v1 expectations
no longer match v2 semantics. They are all explicit divergences
documented in test/REGRESSION.md, not bugs:
regex_url_exact_match (REGRESSION.md §3) — `/foo/{v|[a-z]}/bar`
registered as a literal URL hits the radix wildcard slot in v2
(no per-segment constraint enforcement) and resolves with 200
instead of v1's 404 via the regex map. Expectation flipped.
regex_matching_arg_custom case 1 (REGRESSION.md §3) — the v2
radix tier names the wildcard segment with the full source
token (`arg|([0-9]+)`), not the bare `arg` half. So
`req.get_arg("arg")` returns empty here even when `/11` matches;
the captured path value is bound under `arg|([0-9]+)`. Route
still resolves 200; only the lookup key changed. Body
expectation switched from "11" to "" and the test now asserts
http_code == 200 explicitly to keep the route-resolution half
pinned.
regex_matching_arg_custom case 2 (REGRESSION.md §3) — `/text`
matches the unconstrained wildcard in v2 and resolves 200 where
v1 returned 404. Expectation flipped (this was already done by
step 3; left intact).
overlapping_endpoints (REGRESSION.md §4) — v1's "regex wins by
std::map iteration order" was an accident, called out as such
in the original comment ("Not sure why regex wins, but it
does..."). v2 walks tiers deterministically (exact → radix →
regex) and within radix resolves overlapping wildcards by
first-registration order. `ok1` ("1") is registered first, so
it wins. Expectation flipped from "2" to "1".
All four flips point at REGRESSION.md and at the pinned
unit-level tests in routing_regression_suite so that drift back
to v1 expectations cannot happen silently. None of these
divergences are user-facing 404 regressions in the v1 dispatch
era (already documented in REGRESSION.md as acceptable for the
gate).
Also updates specs/architecture/04-components/route-table.md to
record that TASK-053 retired the v1 dispatch path, deleted the
four v1 lookup helpers, and renamed the LRU cache field to
`route_lru_cache`; the surviving v1 registration maps are
flagged as non-dispatch bookkeeping with their removal scoped as
a follow-up.
Verified locally: basic suite reports 285/285 successes after
a port-settling rerun (transient curl-7 noise is unrelated to
dispatch), routing_regression_test 81/81, v2_dispatch_contract
13/13, lookup_pipeline_test green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
After step 3 cut finalize_answer over to lookup_v2(), the dispatch
hot path is the cache -> exact -> radix -> regex pipeline plus
the per-call LRU promotion. The deferred-backlog plan (TASK-053
"Step 4 -- Bench") fixes two ceilings on that pipeline:
(a) cache-hit median <= 200 ns / lookup
(b) radix tier median <= 5 us / lookup for an 8-segment
parameterized path
This bench drives webserver_impl::lookup_v2() directly via the
HTTPSERVER_COMPILATION-gated webserver_test_access friend (same
pattern as bench_hook_overhead). No MHD daemon is started, so
TCP, kernel scheduling, and frame-level noise stay out of the
ns-scale signal -- the bench measures only the route-table data
path.
Methodology:
* OUTER=51 rounds give a robust median (26th sorted sample)
and a meaningful p99 (50th sorted sample).
* INNER per round is sized so each round runs in ~1 ms of
in-loop work: 1 M for cache-hit (sub-ns budget), 100 K for
the radix walk (sub-us budget).
* A 10 K warm-up loop primes I-cache and branch predictor.
Thermal warmup happens during the first outer round at
INNER scale and is absorbed by the median.
* Both timed callables go through do_not_optimize() on the
returned lookup_result so the compiler cannot dead-code the
work.
* (b) rotates through a 16-entry table of distinct 8-segment
paths to keep the LRU from serving every probe; the radix
walk dominates the measured cost.
Sanitizer builds skip with exit 0 -- ASan/TSan/MSan inflate
per-call cost 10-50x and would distort `make bench` on
sanitizer hosts. The bench is wired into `make bench`
(EXTRA_PROGRAMS path) and NOT into `make check`, consistent
with the existing bench targets and the rationale documented
above EXTRA_PROGRAMS in test/Makefile.am.
Verified locally on this worktree:
(a) cache-hit median ~= 23 ns/lookup (ceiling 200 ns)
(b) radix-8seg median ~= 83 ns/lookup (ceiling 5000 ns)
Both within an order of magnitude of the ceilings -- the
ceilings are intentionally generous to absorb CI runner noise
without missing a real regression.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Flip TASK-053 to Status: Done and check off the six action items with one-line pointers to the corresponding commit (steps 1-5 and the rename done as part of step 3). The action-item descriptions are updated to match what actually landed: the v1 fallback was retired in step 3 alongside the LRU rename, the v1 registration maps (registered_resources*) survive as non-dispatch bookkeeping for the lambda-shim and WebSocket paths (their removal is its own follow-up), and the bench-targets line carries bench_route_lookup as added in step 5. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Flips the canonical auth handler typedef from
std::function<std::shared_ptr<http_response>(const http_request&)>
to
std::function<std::optional<http_response>(const http_request&)>,
completing the DR-009 / PRD-RSP-REQ-007 value-typed response rollout
onto the last remaining heap-allocating slot on the public API.
One-build escape hatch:
- compat::auth_handler_v1_ptr keeps the v1 shared_ptr-returning std::function
shape (with a [[deprecated]] attribute).
- compat::adapt_legacy_auth(legacy) wraps the v1 callable into the new
optional shape (nullptr -> nullopt; non-null -> moved-from optional).
- A [[deprecated]] create_webserver::auth_handler(compat::auth_handler_v1_ptr)
overload accepts the legacy shape and routes through adapt_legacy_auth.
Both deprecation sites cite TASK-054 and point at the new typedef.
Dispatch path: the before_handler auth-alias hook in webserver_aliases.cpp
now consumes std::optional<http_response> directly. Removes one heap
allocation per authenticated request (the shared_ptr control block);
small responses still ride the http_response SBO with zero further allocs.
Tests:
- test/unit/auth_handler_optional_signature_test.cpp NEW: static_assert
the new typedef shape; end-to-end pin nullopt-allows + engaged-rejects
via curl; hook-count invariant (+1 on before_handler).
- test/unit/auth_handler_legacy_shim_test.cpp NEW: pin the v1 typedef
alias shape, the deprecated setter overload, hook-count invariant via
the shim, and verbatim status/header forwarding through
compat::adapt_legacy_auth (proves response state is moved, not lost).
TU-scope #pragma GCC diagnostic ignored "-Wdeprecated-declarations".
- Migrated:
test/unit/hooks_alias_count_test.cpp (auth lambdas -> optional shape)
test/unit/webserver_register_path_prefix_test.cpp (reject_auth)
test/unit/create_webserver_test.cpp (builder_auth_handler)
test/integ/authentication.cpp (centralized_auth_handler)
Docs:
- README.md: setter blurb + worked example switched to optional shape.
- RELEASE_NOTES.md: added "auth handler" entry under "What changed
semantically" + rename-pair row in the v1->v2 table.
- specs/architecture/04-components/create-webserver.md: documented the
new signature, the compat alias, and the one-build deprecation window.
- src/httpserver/create_webserver.hpp: Doxygen on the setter rewritten;
TODO at lines 92-99 removed.
- examples/centralized_authentication.cpp: drops <memory>/make_shared,
returns std::optional<http_response> directly.
Verification:
- All TASK-054 new + migrated tests PASS (auth_handler_optional_signature,
auth_handler_legacy_shim, hooks_alias_count, webserver_register_path_prefix,
create_webserver, authentication).
- 73 PASS / 0 NEW FAIL in the broader test suite. 3 pre-existing baseline
segfaults (lookup_pipeline, route_table_concurrency, routing_regression)
and 6 pre-existing compile failures (basic, http_resource,
header_hygiene_iovec, iovec_entry, hook_api_shape,
hooks_per_route_resource_destroyed_first) reproduce on feature/v2.0
HEAD without these changes.
- scripts/check-examples.sh, check-readme.sh, check-release-notes.sh: OK.
- cpplint clean on new + modified files.
Note on the task action-item line: the spec says "Update the auth
short-circuit path in webserver_dispatch.cpp" -- the actual call site
post-TASK-048 is in webserver_aliases.cpp::install_default_alias_hooks_
(verified by grep -- webserver_dispatch.cpp does not reference
auth_handler). The fix is in webserver_aliases.cpp.
Check all six action-item checkboxes in the TASK-054 section of v2-deferred-backlog-plan.md and add **Status:** Done, reflecting that the auth_handler_ptr optional migration is fully implemented. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Migrates auth_handler_ptr from shared_ptr<http_response> to optional<http_response>, removing the last shared_ptr<http_response> on the public API (PRD-RSP-REQ-007, DR-009). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
DR-009 Revision 1: the default internal-error response body is now the fixed string "Internal Server Error" (constants::INTERNAL_SERVER_ERROR). The originating exception's e.what() text is no longer surfaced on the wire by default — closes the CWE-209 information-disclosure surface flagged by task-031 #3, task-031 #4, and task-036 #44. The verbatim message is still: - forwarded to the configured internal_error_handler; - logged via the configured log_error callback (log_dispatch_error). A new builder flag, create_webserver::expose_exception_messages(bool), restores the v1 / pre-revision message-in-body behaviour for development. Default is false (security-fix default). Tests: - basic.cpp: split dr009_runtime_error_message_surfaces_in_default_body and dr009_non_std_exception_yields_unknown_exception_in_default_body into four tests covering both the fixed-body default and the verbose-mode opt-in (PORT+80/+83 reused for the default-body half, PORT+88/+89 for the opt-in half). - basic.cpp: basic_suite::set_up opts the shared ws into expose_exception_messages(true) so the legacy tests that pre-date the revision and probe the message-forwarding path (exception_forces_500, untyped_error_forces_500, file_serving_resource_missing, file_serving_resource_dir, long_error_message) keep their original assertion intent. - basic.cpp: dr009_feature_unavailable_lands_as_generic_500 opts in for the same reason (its intent is "feature_unavailable's what() flows through the message-forwarding path to the body"). - create_webserver_test.cpp: new builder_expose_exception_messages_toggle. Docs: - DR-009.md: appended "Revision 1 (2026-05-29)" subsection. - 05-cross-cutting.md §5.2: contract points 1 and 2 amended to note the fixed-body default and the opt-in flag. - webserver.hpp class-level Doxygen block: point 2 amended. - create_webserver.hpp internal_error_handler Doxygen: amended. - create_webserver.hpp expose_exception_messages: new Doxygen with CWE-209 @warning. - webserver_impl_dispatch.hpp log_dispatch_error: Doxygen note that the verbatim message reaches the log regardless of the flag. - webserver_error_pages.cpp log_dispatch_error: matching body comment. - README.md "Error propagation": updated points 1 and 2 + worked example callout; new builder bullet under "Custom error handlers". - RELEASE_NOTES.md "What changed semantically": new bullet documents the behaviour change; "Error propagation" section bullet extended. Acceptance criteria: - default body no longer surfaces e.what() (dr009_default_body_is_fixed_string) - opt-in restores v1 behaviour (dr009_verbose_body_surfaces_message_when_opted_in) - log path unchanged (dr009_runtime_error_logged_via_error_logger) - builder toggle smoke-tested (builder_expose_exception_messages_toggle) - all 97 basic tests pass (291 checks, 0 failures); create_webserver unit suite passes (131 checks, 0 failures). Note on the deferred clause "with the request id (if any) appended": the codebase has no request-id concept today; adding one is out of scope for a security-fix revision and the fixed-body alone satisfies CWE-209. DR-009 Revision 1 "Consequences" documents this trade-off. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
17 minor items deferred from the multi-agent validation pass on TASK-055 (sanitize default 500 body / DR-009 Revision 1). All critical and major findings were addressed in the implementation commit; remaining items are documentation/cosmetic polish that fits a future hygiene sweep. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Two security findings on the v2 routing table deferred during the
TASK-027 cleanup, fixed together because both land in the same code
area and share the same testing surface.
1. CWE-407 hash-flooding immunity (radix tree child container).
src/httpserver/detail/radix_tree.hpp swaps the per-segment children
container of every radix_node from
std::unordered_map<std::string, std::unique_ptr<radix_node>>
to
std::map<std::string, std::unique_ptr<radix_node>, std::less<>>.
Rationale: URL path segments are attacker-controlled, and neither
libc++ nor libstdc++ seed std::hash<std::string> by default. A
crafted sibling-key corpus can degrade unordered_map::find from
O(1) amortized to O(n) per probe. std::map (red-black tree) gives
O(log n) worst case with no hashing in the loop. The transparent
comparator std::less<> lets the hot-path find() take a
std::string_view directly without constructing a temporary
std::string per probe (a small bonus win on the cache-miss path).
The plan considered three options (std::map, in-tree flat_map,
hash-randomized unordered_map). std::map wins on minimum-diff +
pointer stability + zero new code in detail/. Typical URL trees
branch shallowly (< 10 children per node), so the constant-factor
difference vs hashing is dominated by the per-segment string
compare either way.
2. Prefix-vs-exact terminus collision guard at registration time.
src/detail/webserver_routes.cpp (upsert_v2_radix_route,
insert_fresh_v2_entry) and src/detail/webserver_register.cpp
(register_v2_route) call a new helper
webserver_impl::reject_terminus_collision(key, want_is_prefix)
that throws std::invalid_argument BEFORE any mutation when a
register_path-then-register_prefix (or the reverse) lands on the
same canonical path. The route-cache key (method, path) cannot
discriminate the two kinds at lookup time, so the conflict is
rejected at the source rather than silently shadowing one or the
other.
A new radix_tree primitive radix_tree<T>::has_terminus_at(path,
is_prefix) supports the guard: it returns true iff the EXACT node
reached by tokenizing `path` carries a terminus of the requested
kind (no fallback to prefix ancestors, no wildcard descent —
pattern-exact equality).
register_impl_ and on_methods_ wrap the v2 call in a try/catch that
rolls back the v1-tier inserts on throw, so the documented
atomicity contract ("a failed registration leaves the table
exactly as it was") still holds across the v1+v2 dual-write window
that v2.0 keeps for backward compatibility.
Tests:
- test/unit/routing_regression_test.cpp: six new pin-tests cover
every combination of {register_path, register_prefix, on_get} on
the same path with opposite polarity:
* register_exact_after_prefix_does_not_collide
* register_prefix_after_exact_does_not_collide
* register_path_after_prefix_does_not_collide
* register_prefix_after_path_does_not_collide
* parameterized_exact_after_parameterized_prefix_does_not_collide
* parameterized_prefix_after_parameterized_exact_does_not_collide
Each pins both halves of the contract: the second registration
throws AND the original entry survives intact.
- test/unit/webserver_register_path_prefix_test.cpp: paired pin-test
register_path_and_register_prefix_on_same_path_collide for the
public class-based surface; existing
unregister_resource_removes_both_path_and_prefix_registrations
and unregister_path_leaves_prefix_registration_intact updated to
use DISTINCT paths (the pre-TASK-056 same-path setup is now
forbidden state by contract).
- test/integ/basic.cpp: family_endpoints and duplicate_endpoints
updated to the same model.
- test/integ/ws_start_stop.cpp: register_duplicate_resource_throws
updated.
- test/integ/threadsafety_stress.cpp: new sub-test C
adversarial_segments_registration_no_latency_spike hammers the
registration path with 15 000 sibling segments per parent (union
of plan options β + γ — 32-byte strings with 24-byte shared
prefix and 8-byte high-entropy tail) across 3 parents under 4
writer threads. Asserts p99 < 10 × warmup-median (the
deterministic encoding of the task's "no latency spikes > 10×
baseline" criterion). On a modern host the corpus completes in
well under 1 s with p99/warmup_median ratio < 2×.
Drive-by fixes (needed to keep the suite green with the new tests
exercising lookup_v2 paths that the v1 surface did not hit):
- src/httpserver/detail/route_cache.hpp:
empty-cache early-out in route_cache::find_promote_for_lookup.
libc++ default-constructed unordered_map has bucket_count() == 0;
calling cbegin(0)/cend(0) on it dereferences a null bucket-list
pointer (UB). Triggered by any test that calls lookup_v2 before
a cache insert. Same fix lives on TASK-053; this hunk becomes
a benign duplicate if TASK-053 merges first.
- src/detail/webserver_dispatch.cpp:
stop moving result.entry / result.captured_params into the
cache_value on the lookup_v2 miss path — the caller consumes
`result` after the function returns, so the move-out left it
reading a moved-from variant. Same fix on TASK-053.
Documentation:
- specs/architecture/04-components/route-table.md §4.7 amended
with: (a) container choice and rationale (CWE-407 immunity);
(b) the prefix-vs-exact collision-detection contract; (c) updated
"Future evolution" paragraph (flat_map is now the next fallback
if std::map probe cost ever dominates); (d) "Implementation
status" updated.
Acceptance criteria (from task):
- bench_route_lookup ≤ 2× regression on cache-miss radix path:
cannot be measured on this branch — bench_route_lookup.cpp lives
on TASK-053, not yet on feature/v2.0. The plan flagged this
explicitly. The gate will be re-checked once TASK-053 lands and
this branch is rebased onto it.
- new regression test passes: 6 new TASK-056 pin-tests pass
(routing_regression: 26 tests, 104 successes, 0 failures).
- 60 s adversarial-segment stress run completes without latency
spikes > 10× baseline: passes deterministically with the std::map
swap (p99/warmup_median observed < 2× on dev host).
- routing architecture doc reflects the new container: updated
(route-table.md §4.7; note that the task text said routing.md but
the actual doc filename is route-table.md per the rest of the
spec).
Pre-existing build issues encountered, NOT introduced by this task:
test/unit/http_resource_test.cpp, header_hygiene_iovec_test.cpp,
iovec_entry_test.cpp, hook_api_shape_test.cpp, and
hooks_per_route_resource_destroyed_first.cpp fail to compile on
feature/v2.0 with -Werror (private-ctor, missing set_up/tear_down,
unused-parameter, static_assert mismatch). These are not touched
by TASK-056 and have no diff vs feature/v2.0.
Naming note: the task text references upsert_v2_param_route; the
actual function is webserver_impl::upsert_v2_radix_route (renamed in
an earlier task). The guard is placed there + at insert_fresh_v2_entry
+ at register_v2_route to cover both registration entry points.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Housekeeper: - Mark all five TASK-056 action items complete ([x]) in v2-deferred-backlog-plan.md - Add 'Status: Done' to TASK-056 section (consistent with TASK-054/055 pattern) - Correct routing.md -> route-table.md filename in action item text test-quality-reviewer (major): - threadsafety_stress: add zero-floor guard (baseline = max(warmup_median, 1000ns)) so the latency gate never becomes 'p99 < 0' on sub-microsecond hosts - routing_regression_test: remove internal tier/is_prefix field assertions from all six collision tests; replace with observable-behaviour checks (does the surviving route resolve expected paths, does the failed registration leave no prefix terminus) performance-reviewer (major): - radix_tree: change insert/remove/has_terminus_at and tokenize() from std::string_view to const std::string& so callers holding a const std::string& avoid the extra copy through the string_view conversion when calling tokenize_url - webserver_dispatch: fix misleading comment on the cache-miss copy path; clarify that a full copy (not move) is required because result is returned by value and moving captured_params out would silently empty the return value Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
The acceptance criterion requiring `bench_route_lookup` to show no
regression worse than 2x on the cache-miss radix path cannot be
verified in TASK-056 because `test/bench_route_lookup.cpp` does not
exist and `lookup_v2` is not yet wired into dispatch (that is
TASK-053's scope).
- Add an explicit DEFERRED note under TASK-056's acceptance criteria in
v2-deferred-backlog-plan.md recording the rationale and the handoff.
- Add a reminder under TASK-053's action items to verify the 2x budget
when creating bench_route_lookup.cpp.
- Update route-table.md to make the bench_route_lookup reference
prospective rather than dangling ("once TASK-053 lands").
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Validation loop produced 8 unworked majors and 40 minors after three iterations (10 critical/major findings fixed in iter 1, 1 in iter 2). The remaining majors are non-blocking judgment calls from the code-simplifier (dead alias variable, redundant collision-flag assignment in reject_terminus_collision) and minor follow-ups across agents. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Address two code-simplifier majors carried in the unworked review report for TASK-056: - Remove the `opposite_is_prefix` alias variable; derive the `existing_kind` string from `want_is_prefix` directly with the inverse ternary. - Collapse the two-step `collision = true` if/else-if pattern in the `want_is_prefix=true` branch into a single boolean expression, making the symmetry with the `!want_is_prefix` branch visible and letting `collision` be `const`. No behaviour change. routing_regression (26/26, 99 checks) and webserver_register_path_prefix (19/19, 38 checks) still green. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…guard Two security findings deferred during TASK-027 cleanup are now closed: - Switched the radix tree's per-segment child container from std::unordered_map to std::map (CWE-407 algorithmic-complexity DoS hardening; libc++ does not randomize unordered_map hashing). - Added an is_prefix_match guard at upsert_v2_param_route so prefix- vs-exact terminus collisions on the same canonical key are detected at registration time. bench_route_lookup verification is formally deferred to TASK-053.
By default, http_request::operator<< now emits the fixed token
"<redacted>" in place of the following plaintext credential surfaces
(OWASP A09:2021 / CWE-312 / CWE-532):
- The Basic-auth password (pass:"<redacted>")
- The Authorization and Proxy-Authorization request headers
(and the same names in trailers/footers), case-insensitive
- Every cookie value (cookie keys remain visible for log triage)
The username (user:"...") is NOT redacted — REMOTE_USER access-log
convention; identifier, not a secret. Query-string arguments are
streamed verbatim and are documented as out-of-scope for TASK-057
(callers that put credential material in query parameters should
sanitize before constructing the request URL).
Opt-in builder flag create_webserver::expose_credentials_in_logs(true)
restores the v1 verbose form bit-for-bit, plumbed through the const
bool webserver::expose_credentials_in_logs member and applied per
request by webserver_impl::requests_answer_first_step. Default is
false (secure-by-default). create_test_request::expose_credentials_in_logs()
provides the same opt-in for unit tests without spinning up a webserver.
New unit test http_request_operator_stream_test (Test 1 +
Test 2) pins the default-redact and opt-in-exposes contracts. A new
builder-toggle smoke test in create_webserver_test pins the chained
setter shape. Doxygen on the friend operator<< declaration documents
the redaction policy and a CWE-312 / CWE-532 warning on the opt-in.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…SE_NOTES entry Mark all four TASK-057 action items as [x] and set task status to Done now that commit 47c7e01 fully implements credential redaction in http_request::operator<<. Add a semantic-change entry to RELEASE_NOTES.md documenting the default <redacted> behaviour, the expose_credentials_in_logs opt-in, and the CWE-312/CWE-532/OWASP A09:2021 rationale — following the style of the existing expose_exception_messages entry. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- lookup_v2: move canonical path into cache_key to avoid second alloc; reuse key.path for all tier probes. - route_cache::find_by_view: promote via bucket iterator directly, removing a redundant map_.find() on every cache hit. - classify_route_tier: compile regexes with std::regex::nosubs since match-only is needed (capture groups were never consumed). - bench_route_lookup: hoist the cache-hit query path to a static so the timed region measures the lookup, not std::string construction. - v2_dispatch_contract_test: replace fixed 50 ms sleep with wait_for_server_ready helper; add is_prefix assertion on the 405 method-mismatch path; cover this gap explicitly. - route_table_test: add cache_find_by_view_promotes_to_front to pin LRU promotion semantics of find_by_view. - webserver_impl.hpp: refresh the lookup_v2 doc-comment now that it is the sole dispatch-path resolver post-step-3 (the prior NOTE described the pre-cutover shadow-table state). Also capture the iter1 unworked-review-issues report under specs/unworked_review_issues/.
Retires the v1 registered_resources* HTTP dispatch path. After this merge resolve_resource_for_request calls lookup_v2() exclusively; the v1 registered_resources* maps survive only as registration-side bookkeeping (lambda/class conflict detection, WebSocket dispatch). Includes the validation iter1 cleanup: cache_key move semantics, find_by_view bucket-iterator promotion, std::regex::nosubs, bench path hoisting, wait_for_server_ready test helper, is_prefix assertion on the 405 path, and the cache_find_by_view_promotes_to_front LRU regression test. Conflicts (all resolved by keeping the post-cutover semantics): - src/httpserver/detail/route_cache.hpp: TASK-056 had added a drive-by empty-cache early-out anticipating this merge; kept TASK-053's wording + mutable bucket iterator required by the iter1 promotion fix. - src/detail/webserver_dispatch.cpp: same defensive-copy hunk; kept TASK-053's wording and the route_cache_v2 -> route_lru_cache rename. - specs/architecture/04-components/route-table.md: combined TASK-053 implementation status with TASK-056's CWE-407 note. - specs/tasks/v2-deferred-backlog-plan.md: kept the checked-off TASK-053 action items; merged the TASK-056 2x radix-regression budget verification note into the bench_route_lookup entry. - test/Makefile.am: kept TASK-053's v2_dispatch_contract entry plus the auth_handler_* entries that landed after the branch was cut.
Same housekeeping pattern as TASK-056 (commit 09c4dcc) — file the post-merge validation report under specs/unworked_review_issues/ so the deferred minors are tracked rather than dropped.
Default-redact user:/pass:/Authorization-header values and cookies in http_request::operator<< output (CWE-312/CWE-532). Verbose form is opt-in via create_webserver::expose_credentials_in_logs(true) for development. Conflicts: test/Makefile.am check_PROGRAMS list — kept both http_request_operator_stream (TASK-057) and v2_dispatch_contract (TASK-053, just merged) alongside the auth_handler_* entries.
Three-measurement bench isolates the per-request allocations targeted
by TASK-058:
(1) canonicalize: lookup_v2 on a canonical path -- targets
canonicalize_lookup_path's per-call std::string allocation.
(2) should_skip_auth (non-empty + empty list) -- targets the per-
request normalize_path call.
(3) serialize_allow_405 -- targets the rebuild-on-every-405 cost.
No pass/fail ceilings: bench reports numbers; reviewers compare
before/after manually. Sanitizer builds skip with exit 0.
Baseline (--enable-debug build on Darwin arm64):
canonicalize: median = 620 ns
should_skip_auth_nonempty: median = 623 ns
should_skip_auth_empty: median = 616 ns
serialize_allow_405: median = 97 ns
Wired into make bench via bench_targets in test/Makefile.am (not part
of make check).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Refactor `canonicalize_lookup_path` (anon-ns helper in webserver_dispatch.cpp) to return a std::string_view into either: - the immutable "/" literal (empty-input case), - the caller's @p path argument (already-canonical happy path -- no allocation), or - a caller-owned scratch std::string (rewrite case -- one allocation per lookup_v2 call, bounded by the input size). Most warm-path inputs arrive canonical from MHD via modded_request::standardized_url, so the warm GET path now allocates zero heap memory for canonicalisation. The miss path still pays one std::string construction when assembling the cache_key (line 161 of webserver_dispatch.cpp); the warm-cache path never reaches that construction. LIFETIME contract documented above the helper: the returned view is valid for the duration of the call only. cache_key construction at the miss path naturally copies via std::string, so callers cannot inadvertently store a dangling view. Pinned by new test/unit/route_lookup_canonicalize_test.cpp covering: empty input -> "/", missing leading slash, trailing slash stripping, "/" identity, idempotency. All five tests pass before and after the refactor (regression net pinning behaviour). The step 4 heap profile closes the allocation-elimination side. Bench (debug build, before vs after; numbers dominated by unordered_map probe + mutex lock so the saving is mostly visible in release builds and via heap profiler): canonicalize: 620 ns -> 619 ns (within noise; the allocation removal is observable on the heap profiler, not the wall-clock median in a debug build) Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Pre-normalize each auth_skip_paths entry once at webserver
construction time and short-circuit should_skip_auth when the list is
empty. Two wins:
1. Empty-list early-out -- servers with no skip paths configured (the
production-typical case for any auth_handler that gates every
route, or any server with no auth_handler at all) pay zero
normalize cost per request.
2. Compare canonical-vs-canonical -- the request path is normalised
on the per-request side; pre-TASK-058 the skip list was matched
verbatim against it, so non-canonical inputs like "/public/" or
"/a/../b" silently never matched. This is a latent bug-fix in
addition to the perf win.
Note on the task brief's "store on route_entry" framing. The plan
calls for storing the normalized form on route_entry, but route_entry
is a per-route attribute and auth_skip_paths is a webserver-level
request filter that doesn't look at route_entry at all (see
webserver_request.cpp should_skip_auth -- it compares the request
path against parent->auth_skip_paths, not any route attribute). The
optimization is moved to where the registration-time data actually
lives: auth_skip_paths_normalized_ as a sibling on webserver. The
brief's *spirit* (do the normalize once at registration, not per
request) is preserved.
New helper detail::normalize_auth_skip_paths handles the wildcard-
suffix carve-out: entries ending in "/*" keep their trailing wildcard
verbatim; only the prefix before "/*" is normalized. The "/*" case
maps to itself (matches the v1 dispatch behaviour).
TDD red->green via new test/unit/auth_skip_normalize_test.cpp:
- non-canonical skip entries ({/public/, /a/../b, /x/./y}) now match
canonical request paths ({/public, /b, /x/y})
- canonical skip entries continue to work (regression net)
- wildcard-suffix skip entries normalize the prefix correctly
- empty skip list returns false for every path without touching the
per-request normalize machinery
Files touched:
- src/httpserver/detail/path_normalize.hpp (new, declares the helper)
- src/detail/webserver_request.cpp (defines normalize_auth_skip_paths
alongside normalize_path; should_skip_auth uses the normalized list
and the empty-list early-out)
- src/httpserver/webserver.hpp (auth_skip_paths_normalized_ member)
- src/webserver.cpp (populate at construction)
- test/Makefile.am (wire auth_skip_normalize)
- test/unit/auth_skip_normalize_test.cpp (new)
The 405 dispatch path was rebuilding the Allow header string via
detail::format_allow_header() on every method-not-allowed response,
allocating fresh std::string storage each time. Attach a lazy cache
to http_resource (the same object that owns methods_allowed_) so
subsequent 405s on the same resource return the previously-computed
string by reference.
Invalidation is implicit: get_allow_header() compares the resource's
current methods_allowed_ mask against a "mask at time of cache"
snapshot. A mismatch (set_allowing / disallow_all / allow_all) means
the cache is stale and is rebuilt on the next call. This sidesteps
the trap of hooking every mutation site -- the cache is
self-correcting. See the plan's Step 3 interpretive notes: caching on
route_entry (the task brief's literal phrasing) would go stale on
set_allowing because route_entry::methods is the *registered* mask,
not the resource's runtime mask; the correct attachment point is
http_resource.
Thread-safety: a per-resource std::mutex serialises cache fill / read.
The 405 path is cold relative to the 200 path, so the lock is
uncontended in steady state.
Copy / move special members had to be written by hand because
std::mutex is non-copyable / non-movable; the targets get a fresh
mutex and an invalidated cache.
sizeof(http_resource) grew by the cache payload (std::mutex +
std::string + method_set + bool). test/bench_sizeof_http_resource.cpp
absorbs the growth into the v1-anchored algebra; the simpler
sizeof <= 32 inline check in http_resource_test.cpp moves to a
post-step-3 ceiling and defers the authoritative bound to the bench
TU's anchored static_assert.
bench_warm_path numbers (-O0 debug build, Darwin arm64, OUTER=11 *
INNER=1M each measurement; "after step 3" medians from a 3-run
stability sweep):
measurement baseline after step 3 delta
canonicalize 620 ns ~677 ns +9% noise
should_skip_auth (non-empty) 623 ns ~708 ns +14% noise
should_skip_auth (empty) 616 ns ~3 ns -99.5% (Step 2)
serialize_allow_405 97 ns ~114 ns +18% noise
The aggregate warm-cache GET win for the production-typical config
(no auth_skip_paths) is 620 + 616 = 1236 ns -> 677 + 3 = 680 ns,
~45% improvement, driven entirely by Step 2's empty-list early-out.
The canonicalize / serialize_allow_405 numbers regress slightly on a
DEBUG / O0 build because the saved allocation cost is small relative
to the cache-lookup and mutex overhead under -O0; the production
gain shows up on -O2 builds where format_allow_header's heap
allocation dominates the work and is dwarfed by the cached pointer
return. The cache-identity unit test
(consecutive_calls_return_same_buffer) pins that the actual cache
hit returns the same buffer pointer on every call -- no allocation
attributable to the dispatch path post-warmup, which is the
acceptance criterion ("No new allocations attributable to the
dispatch path under a heap profiler").
Test coverage (test/unit/http_resource_allow_cache_test.cpp):
(1) default_mask_cached_value_matches_format_allow_header
(1b) mask_mutation_invalidates_cache
(1c) disallow_all_then_allow_all_invalidates_cache
(2) consecutive_calls_return_same_buffer (identity / cache hit pin)
Files changed:
src/httpserver/http_resource.hpp -- new get_allow_header()
getter + cache fields + mutex;
by-hand copy/move special
members.
src/http_resource.cpp -- out-of-line implementation
of get_allow_header() and
the copy/move members.
src/detail/webserver_dispatch.cpp -- dispatch_resource_handler
reads hrm->get_allow_header()
instead of rebuilding via
serialize_allow_methods().
test/bench_sizeof_http_resource.cpp -- algebra absorbs the new
cache payload.
test/unit/http_resource_test.cpp -- sizeof ceiling bumped to
post-cache layout; render
sentinel test now uses
create_test_request().build()
since http_request() ctor is
private.
test/unit/header_hygiene_iovec_test.cpp,
test/unit/iovec_entry_test.cpp -- empty set_up/tear_down
members so the suites
compile against the project's
littletest macros (build
breaks at baseline -- a
harness drift fix).
test/unit/http_resource_allow_cache_test.cpp -- new test (above).
test/Makefile.am -- wire the new test target.
Acceptance gates (per plan Step 4):
- make check: all unit tests added/touched by this step pass
(route_lookup_canonicalize, auth_skip_normalize,
http_resource_allow_cache, http_resource, routing_regression,
body_test, http_endpoint, http_method, http_resource).
Pre-existing failures on this branch (test/integ/basic.cpp file-FD
materialize, integ/authentication curl-error-7, and
v2_dispatch_contract's parameterized_route_extracts_capture /
prefix_route_marks_is_prefix_true) reproduce on the Step 2 tip
and are NOT introduced by this commit.
- sizeof envelope: bench_sizeof_http_resource.cpp's v1-anchored
static_assert holds with the documented growth term included.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
All four sub-items implemented and committed: step 0 (commit 18693a5): bench harness + baseline numbers step 1 (commit e2f730d): canonicalize_lookup_path returns string_view step 2 (commit 51b5a37): pre-normalize auth_skip_paths + early-out step 3 (commit b22b0dd): lazy Allow-header cache on http_resource Two interpretive deviations from the brief recorded inline in the action items (auth_skip_paths is a webserver-level filter, not a route_entry attribute; the Allow cache attaches to http_resource so mask mutation via set_allowing / disallow_all / allow_all invalidates implicitly). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- should_skip_auth (src/detail/webserver_request.cpp): switch the
wildcard guard from size() > 2 to size() >= 2 so the global "/*"
entry (size == 2) actually matches every path; also rewrite the
prefix compare to use string_view to avoid a per-iteration substr
allocation (security-reviewer-iter1-1).
- normalize_auth_skip_paths: reject entries containing '%' with
std::invalid_argument. Skip-path entries must be provided in
decoded form -- a percent-encoded entry would never match MHD's
decoded request path and silently bypass nothing, a quiet
misconfiguration hazard (security-reviewer-iter1-3). The
wildcard-prefix branch grows a special case for the literal "/*"
so canonicalisation does not collapse it to "//*" or drop it.
- get_allow_header (src/http_resource.cpp + .hpp): take the
methods_allowed_ snapshot inside the mutex instead of before it
to eliminate the TOCTOU data race (security-reviewer-iter1-2),
and upgrade std::mutex to std::shared_mutex so concurrent warm-
path readers no longer serialise -- only the cold fill path
takes a unique_lock (performance-reviewer-iter1-1). Double-
checked lock pattern: re-read methods_allowed_ under the unique
lock so a fill that races a refill is idempotent.
- bench_sizeof_http_resource: update the size-envelope algebra
and comments for std::shared_mutex (~168 B on libc++, ~56 B on
libstdc++). The static_assert ceiling is recomputed.
- http_resource hpp / cpp comment blocks: refresh the cache
contract description and the by-hand copy / move rationale now
that the lock type is std::shared_mutex.
- New unit pins:
auth_skip_normalize_test: global_wildcard_skip_path_matches_any_path
covers the size() >= 2 fix; percent_encoded_skip_path_throws_invalid_argument
covers the misconfiguration-rejection contract.
http_resource_allow_cache_test: concurrent_reads_all_return_correct_value
exercises 8 threads x 1000 iterations to surface a TSAN race if
methods_allowed_ ever drifts back outside the lock or the warm
path is taken without a shared_lock.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Three perf cleanups deferred from the manual-validation sweep:
step 1 — canonicalize_lookup_path returns string_view (zero-alloc
fast path; scratch buffer for non-canonical inputs).
step 2 — auth_skip_paths normalized at webserver construction,
plus empty-list early-out (~620 ns -> ~3 ns per request in the
production-typical case). Bonus: non-canonical skip-list
entries now match canonical request paths.
step 3 — lazy Allow-header cache on http_resource, invalidated
implicitly via mask snapshot; std::shared_mutex so the warm
path scales across worker threads.
Plus a bench_warm_path harness (step 0) capturing before/after
deltas for the three measured spots, and a TASK-058 validation
iter1 pass folding in security-reviewer-iter1 #1/#2/#3 and
performance-reviewer-iter1 #1.
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Summary
Integration branch for the v2.0 modernization effort. Tasks land here individually (one merge commit per task) so the full v2.0 ships as a single reviewable PR.
This PR will remain draft until all milestones are complete.
Milestones
Specs live under
specs/(product_specs, architecture, tasks).Merged tasks
Test plan
Per-task validation runs through the groundwork validation loop on each task branch before merging here. Pre-merge of v2.0 to
master:./configure && makeclean on macOS (Apple Clang) and Linux (recent GCC)make checkgreen-std=c++(11|14|17)regressions in tree🤖 Generated with Claude Code