1 Commits
Author SHA1 Message Date
dsqlandClaude Opus 4.8 a0c9b03015 add package: pyproject + src
TLSSession over aioweb's backend seam by composition: one session class
delegates the four seams to an injected backend. ships CurlCffi (curl_cffi
impersonate) and Noble (noble_tls Client) backends plus the TLSBackend
protocol for custom clients. tls clients are optional extras
([curl]/[noble]/[all]) with guarded imports; all aioweb features (domain/
header/ephemeral/proxy/retry/preview) inherited unchanged. src/ multi-module
layout, hatchling.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: disqualifier <dev@disqualifier.me>
2026-06-24 18:49:51 -04:00
6 changed files with 47 additions and 261 deletions
+1 -1
View File
@@ -1,5 +1,5 @@
# claude
.claude/
CLAUDE.md
# python
__pycache__/
+13 -40
View File
@@ -22,17 +22,17 @@ you want; importing the package never fails because an extra is missing.
`requirements.txt` (pick the extra you need):
```
aioweb_tls[curl] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.4
aioweb_tls[noble] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.4
aioweb_tls[all] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.4
aioweb_tls[curl] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.0
aioweb_tls[noble] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.0
aioweb_tls[all] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.0
```
Direct:
```bash
pip install "aioweb_tls[curl] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.4"
pip install "aioweb_tls[noble] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.4"
pip install "aioweb_tls[all] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.4"
pip install "aioweb_tls[curl] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.0"
pip install "aioweb_tls[noble] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.0"
pip install "aioweb_tls[all] @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb_tls.git@v0.1.0"
```
- `[curl]` → curl_cffi backend · `[noble]` → noble_tls backend · `[all]` → both.
@@ -44,8 +44,6 @@ pip install "aioweb_tls[all] @ git+ssh://git@git.rethinkstudios.io/rethink-publi
Constructing a backend whose client isn't installed raises that `RuntimeError` at
construction, never at import.
Drop the `@v0.1.4` suffix from the line above to install the latest unpinned.
## curl_cffi backend
```python
@@ -57,11 +55,8 @@ async with TLSSession(backend=CurlCffi(impersonate="chrome"), proxies={"https":
print(resp.json()["tls"]["ja3"])
```
- `CurlCffi(impersonate="chrome")` sets the forged profile; override it per call by
passing `impersonate=` to the low-level `request()` (which forwards `**kwargs` to the
backend). `request_with_retries` has a fixed signature and does **not** accept extra
backend kwargs — passing `impersonate=` there raises `TypeError`; set the profile on
the `CurlCffi` instance for the retrying path.
- `CurlCffi(impersonate="chrome")` sets the forged profile; override per call by
passing `impersonate=` to any request method.
- curl_cffi forges JA3/JA4 + HTTP/2 fingerprints via the bundled curl-impersonate binary.
## noble backend
@@ -78,13 +73,8 @@ async with TLSSession(backend=Noble(client="chrome_133")) as s:
- `Noble(client="chrome_133")` — accepts a `noble_tls.Client` enum or a string name.
- noble_tls downloads a Go shared library on first use. `await s.setup()` fetches it
once at startup; if you skip it, the first request fetches it lazily. The fetch is
guarded by a lock, so even concurrent first requests download it exactly once.
- Binary bodies (images, zips, PDFs, protobuf) round-trip as true bytes: noble_tls
returns response bodies as a UTF-8 JSON string by default, which mangles non-UTF-8
bytes (`U+FFFD` replacement, wrong length) even on a 200 response — the Noble
backend always requests `is_byte_response=True` and decodes the resulting
base64 data-URI back into raw bytes, so `resp.content` is never lossy.
once at startup; if you skip it, the first request fetches it lazily (guarded to run
once).
## Writing your own backend (the `TLSBackend` protocol)
@@ -104,9 +94,6 @@ for the authoritative contract):
| `raw_request` | **required** | `async (session, method, url, **kwargs) -> aioweb.Response` | send one request; adapt the client's response into an `aioweb.Response` |
| `is_closed` | **required** | `(session) -> bool` | whether the session is closed |
| `cookies_for_url` | optional | `(session, url) -> dict` | cookies for `preview()`; defaults to `{}` |
| `set_cookie` | optional | `(session, name, value, domain=None, path="/") -> None` | backs `TLSSession.set_cookie()`; raises `NotImplementedError` if absent |
| `get_cookies` | optional | `(session) -> dict` | backs `TLSSession.get_cookies()`; raises `NotImplementedError` if absent |
| `clear_cookies` | optional | `(session) -> None` | backs `TLSSession.clear_cookies()`; raises `NotImplementedError` if absent |
| `setup` | optional | `async () -> None` | one-time prep (e.g. fetch a native lib); idempotent |
| `close` | optional | `async (session) -> None` | close the session; defaults to `await session.close()` |
@@ -164,9 +151,8 @@ async with TLSSession(backend=GoTLSBackend("http://localhost:8080")) as s:
## Inherited features work unchanged
aioweb's overwrite/domain/ephemeral/proxy/retry/preview logic operates on plain dicts
and never touches the HTTP backend — only the seams do. Header overwrites, domain
rewriting, ephemeral headers, proxies, retries, and previews behave identically on
any backend:
and never touches the HTTP backend — only the seams do. Every aioweb feature behaves
identically on any backend:
```python
async with TLSSession(backend=CurlCffi(impersonate="chrome")) as s:
@@ -176,19 +162,6 @@ async with TLSSession(backend=CurlCffi(impersonate="chrome")) as s:
print(s.preview("GET", "https://internal.local/x").as_curl()) # reflects all of the above
```
Session-default headers are never baked into the underlying client (neither
`CurlCffi` nor `Noble` passes `headers=` to their client's constructor) — they flow
through aioweb's own per-request `_default_headers` merge instead. That keeps
`update_headers()` / `clear_headers()` accurate for both backends: what
`get_headers()` and `preview()` report is what actually goes out on the wire, with
no stale, already-baked value resurfacing after a clear.
The mutable cookie API — `set_cookie()` / `get_cookies()` / `clear_cookies()` — is
also backend-aware: `CurlCffi` and `Noble` each route it through their own client's
cookie store (both expose a `requests`-style `session.cookies` with `set()` /
`items()` / `clear()`), so these calls work the same way they do on the base
`aioweb.ExtendedSession`, not just `_cookies_for_url()` (used by `preview()`).
## Honesty note
TLS fingerprinting changes one layer — the TLS/HTTP fingerprint. It does **not** by
@@ -197,4 +170,4 @@ are separate signals. Use this as one component, not a complete anti-bot solutio
## Versioning
Releases are tagged `vX.Y.Z`. The install line above pins a release; drop the `@vX.Y.Z` suffix to install the latest unpinned. Pin deliberately for reproducible installs.
Tagged `vX.Y.Z`. Pin the tag in `requirements.txt`.
+3 -3
View File
@@ -4,11 +4,11 @@ build-backend = "hatchling.build"
[project]
name = "aioweb_tls"
version = "0.1.4"
description = "TLS-fingerprinting backends (curl_cffi / noble_tls) for aioweb via one injectable TLSSession, config-free, installable."
version = "0.1.0"
description = "TLS-fingerprinting backends for aioweb — curl_cffi / noble_tls ExtendedSession subclasses, config-free, installable."
requires-python = ">=3.10"
dependencies = [
"aioweb @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb.git@v0.1.5",
"aioweb @ git+ssh://git@git.rethinkstudios.io/rethink-public/aioweb.git@v0.1.0",
]
[project.optional-dependencies]
+23 -169
View File
@@ -11,28 +11,12 @@ is not installed raises a clear RuntimeError naming the extra to install. import
this module never fails because an extra is missing.
"""
import asyncio
import base64
import logging
import math
import aiohttp
from aioweb import Response
log = logging.getLogger(__name__)
def _as_client_error(error: Exception, backend: str) -> aiohttp.ClientError:
"""wrap a backend-native network exception as an aiohttp.ClientError
aioweb's request() only re-wraps aiohttp.ClientError; curl_cffi raises
RequestException(OSError) and noble_tls raises TLSClientException(IOError), neither
of which is an aiohttp.ClientError. translating here gives TLS backends the same
typed failure contract as the aiohttp path on the bare request() route.
"""
return aiohttp.ClientError(f"{backend} request failed: {error}")
try:
from curl_cffi import AsyncSession as _CurlAsyncSession
_CURL_ERROR = None
@@ -60,46 +44,8 @@ def _coerce_timeout(value):
return total if isinstance(total, (int, float)) else None
def _noble_timeout_seconds(value):
"""coerce a raw or wrapped timeout into whole seconds for noble's Go int field
single source of truth for both of Noble's timeout paths (create_session's
session-default and raw_request's per-call override): noble's Go field
timeoutSeconds is an int, so a sub-second float (e.g. 0.5) truncates to 0 — which
Go reads as no/instant timeout — and any non-integer value fails Go-side JSON
unmarshal outright. rounds UP so a sub-second timeout still waits at least 1s
instead of truncating away. returns None when there is no timeout to coerce.
"""
timeout = _coerce_timeout(value)
if timeout is None:
return None
return max(1, math.ceil(timeout))
def _noble_content(response) -> bytes:
"""extract true response bytes from a noble_tls response fetched with is_byte_response
with is_byte_response=True, noble_tls's Go side returns the body as a
`data:<mime>;base64,<payload>` URI string in response.text (the whole Go response is
UTF-8-decoded before JSON parsing, so raw bytes have to travel as base64 to survive
that round trip) — response.content is useless here since it is just
`self.text.encode()`, re-encoding the data-URI string itself rather than decoding it.
falls back to a plain utf-8 encode if the body isn't a data-URI (e.g. an error body).
"""
text = getattr(response, "text", "") or ""
if text.startswith("data:") and ";base64," in text:
_, _, payload = text.partition(";base64,")
return base64.b64decode(payload)
return text.encode()
def _jar_to_dict(session):
"""best-effort map of a requests-style cookie jar on session to a plain dict
intentionally broad: this feeds preview() only, the two backends expose differently-
shaped jars, and a cookie read must never crash a request — so any jar that doesn't
iterate cleanly degrades to {} rather than raising.
"""
"""best-effort map of a requests-style cookie jar on session to a plain dict"""
jar = getattr(session, "cookies", None)
if not jar:
return {}
@@ -114,10 +60,7 @@ class CurlCffi:
config:
impersonate: browser profile to forge (default "chrome"); override per call
by passing impersonate= to the low-level request()/_raw_request path,
which forwards **kwargs to the backend. NOT request_with_retries — its
signature is fixed (no **kwargs) and would raise TypeError. for a
per-call profile under retries, set it on the CurlCffi instance instead.
by passing impersonate= to any request method.
requires the [curl] extra (pip install "aioweb_tls[curl]").
"""
@@ -131,17 +74,8 @@ class CurlCffi:
self.impersonate = impersonate
def create_session(self, headers, timeout, **kwargs):
"""build the curl_cffi AsyncSession
deliberately does NOT pass `headers` to AsyncSession: curl_cffi bakes a
constructor `headers=` into the client and re-merges it under whatever
per-request headers() sends, so update_headers()/clear_headers() would stop
matching what's actually on the wire (aioweb's session-default headers are
already applied per request by the base's _default_headers merge — see
aioweb.ExtendedSession._create_session's docstring for why baking breaks the
mutable header api).
"""
return _CurlAsyncSession(timeout=timeout, **kwargs)
"""build the curl_cffi AsyncSession"""
return _CurlAsyncSession(headers=headers, timeout=timeout, **kwargs)
async def raw_request(self, session, method, url, **kwargs) -> Response:
"""send via curl_cffi and adapt the result into an aioweb.Response"""
@@ -155,18 +89,10 @@ class CurlCffi:
if proxy:
kwargs["proxy"] = proxy
try:
response = await session.request(method, url, impersonate=impersonate, **kwargs)
except aiohttp.ClientError:
raise
except asyncio.TimeoutError:
raise
except OSError as error:
# curl_cffi's RequestException subclasses OSError; translate the native
# network error into aiohttp.ClientError. narrowed from a bare Exception so a
# real bug (AttributeError/TypeError) isn't laundered into 'client error'
raise _as_client_error(error, "curl_cffi") from error
content = response.content if response.content is not None else b""
content = response.content
if content is None:
content = response.text.encode() if response.text else b""
return Response(
status_code=response.status_code,
headers=dict(response.headers),
@@ -177,34 +103,13 @@ class CurlCffi:
)
def is_closed(self, session) -> bool:
"""whether the curl_cffi session is closed
curl_cffi tracks closed state in the private `_closed` (no public `closed`
property), so read that; fall back to a public `closed` if a future version
adds one. TLSSession's own `_closed` flag is the primary signal — this is a
best-effort backend check for out-of-band closes.
"""
closed = getattr(session, "_closed", None)
if closed is None:
closed = getattr(session, "closed", False)
return bool(closed)
"""whether the curl_cffi session is closed"""
return bool(getattr(session, "closed", False))
def cookies_for_url(self, session, url) -> dict:
"""cookies curl_cffi would send for url (best-effort)"""
return _jar_to_dict(session)
def set_cookie(self, session, name, value, domain=None, path="/") -> None:
"""set a cookie in curl_cffi's own cookie store"""
session.cookies.set(name, value, domain=domain or "", path=path)
def get_cookies(self, session) -> dict:
"""all cookies stored in curl_cffi's cookie store"""
return dict(session.cookies.items())
def clear_cookies(self, session) -> None:
"""clear curl_cffi's cookie store"""
session.cookies.clear()
async def close(self, session) -> None:
"""close the curl_cffi session"""
await session.close()
@@ -230,7 +135,6 @@ class Noble:
) from _NOBLE_ERROR
self.client = self._resolve_client(client)
self._updated = False
self._setup_lock = asyncio.Lock()
@staticmethod
def _resolve_client(client):
@@ -240,80 +144,42 @@ class Noble:
return client
async def setup(self) -> None:
"""fetch the noble_tls Go shared library once; idempotent and concurrency-safe
"""fetch the noble_tls Go shared library once; idempotent
uses noble_tls.download_if_necessary (the current API: it fetches the asset on
first use and no-ops when it already exists). older noble_tls without that name
is handled via update_if_necessary as a fallback.
guarded by an asyncio.Lock with a check-lock-recheck so concurrent first
requests don't both run the fetch: the fast path returns once _updated is
set, and only the first caller through the lock does the work.
download_if_necessary handles the first-time fetch (no lib present);
update_if_necessary refreshes an existing one. try download first so a
clean environment works, falling back to update.
"""
if self._updated:
return
async with self._setup_lock:
if self._updated:
return
download = getattr(noble_tls, "download_if_necessary", None)
if download is not None:
await download()
elif hasattr(noble_tls, "update_if_necessary"):
else:
await noble_tls.update_if_necessary()
self._updated = True
def create_session(self, headers, timeout, **kwargs):
"""build the noble_tls Session, honoring the session-default timeout
noble_tls.Session takes neither headers nor timeout in its constructor.
deliberately does NOT bake `headers` into session.headers: aioweb's
session-default headers are already applied per request by the base's
_default_headers merge, and baking them here would make
update_headers()/clear_headers() stop matching what's actually on the wire
(see aioweb.ExtendedSession._create_session's docstring, and CurlCffi.create_session
above for the same rationale) — the per-request merge means headers are never
silently dropped, contrary to what this docstring used to claim.
the coerced timeout IS applied here (matching raw_request's per-call path): noble's
Go field timeoutSeconds is an int, so a raw sub-second/float session-default (e.g.
timeout=7.5) would fail Go-side JSON unmarshal on every request that doesn't
override it per call. max(1, ceil()) mirrors the guard raw_request already has.
"""
session = noble_tls.Session(client=self.client, **kwargs)
timeout_seconds = _noble_timeout_seconds(timeout)
if timeout_seconds is not None:
session.timeout_seconds = timeout_seconds
return session
"""build the noble_tls Session"""
return noble_tls.Session(client=self.client, **kwargs)
async def raw_request(self, session, method, url, **kwargs) -> Response:
"""send via noble_tls and adapt the result into an aioweb.Response"""
await self.setup()
timeout_seconds = _noble_timeout_seconds(kwargs.pop("timeout", None))
if timeout_seconds is not None:
kwargs["timeout_seconds"] = timeout_seconds
timeout = _coerce_timeout(kwargs.pop("timeout", None))
if timeout is not None:
kwargs["timeout_seconds"] = int(timeout)
proxy = kwargs.pop("proxy", None)
if proxy:
kwargs["proxy"] = proxy
# force byte-safe transport: without this, noble_tls's Go side returns the body
# as a plain UTF-8 JSON string, replacing invalid bytes with U+FFFD — silently
# corrupting any binary payload (image/zip/pdf) even though the request succeeds
# with status 200. see _noble_content() for how the byte-safe body is decoded back.
kwargs.setdefault("is_byte_response", True)
try:
response = await session.execute_request(method=method.upper(), url=url, **kwargs)
except aiohttp.ClientError:
raise
except asyncio.TimeoutError:
raise
except OSError as error:
# noble_tls's TLSClientException subclasses IOError (== OSError); translate
# the native network error, narrowed from bare Exception so a real bug surfaces
raise _as_client_error(error, "noble_tls") from error
content = _noble_content(response)
content = getattr(response, "content", None)
if content is None:
text = getattr(response, "text", "") or ""
content = text.encode()
return Response(
status_code=response.status_code,
headers=dict(getattr(response, "headers", {}) or {}),
@@ -331,18 +197,6 @@ class Noble:
"""cookies noble_tls would send for url (best-effort)"""
return _jar_to_dict(session)
def set_cookie(self, session, name, value, domain=None, path="/") -> None:
"""set a cookie in noble_tls's own cookie jar"""
session.cookies.set(name, value, domain=domain or "", path=path)
def get_cookies(self, session) -> dict:
"""all cookies stored in noble_tls's cookie jar"""
return dict(session.cookies.items())
def clear_cookies(self, session) -> None:
"""clear noble_tls's cookie jar"""
session.cookies.clear()
async def close(self, session) -> None:
"""close the noble_tls session if it exposes a close"""
close = getattr(session, "close", None)
-9
View File
@@ -30,15 +30,6 @@ optional:
cookies the client would send for url, for preview(). default {} (used when
the backend has no introspectable jar).
set_cookie(session, name, value, domain=None, path="/") -> None
get_cookies(session) -> dict
clear_cookies(session) -> None
the mutable cookie api TLSSession.set_cookie/get_cookies/clear_cookies
delegate to. the aiohttp-only base implementations reach into
session.cookie_jar, which TLS backends don't have, so a backend without
these raises NotImplementedError from TLSSession rather than crashing with
an AttributeError on a private aiohttp attribute.
async setup() -> None
one-time async preparation (e.g. fetch a native lib). called once via
TLSSession.setup() and lazily before the first request; make it idempotent.
-32
View File
@@ -81,38 +81,6 @@ class TLSSession(ExtendedSession):
return True
return self.backend.is_closed(self.session)
# -------------------------------------------------------------------------
# mutable cookie api — the base's set_cookie/get_cookies/clear_cookies reach
# into self.session.cookie_jar (aiohttp-only), so TLS backends override them
# to route through the backend instead of crashing with AttributeError
def set_cookie(self, name, value, domain=None, path="/"):
"""set a cookie via the backend's own cookie store"""
set_cookie = getattr(self.backend, "set_cookie", None)
if set_cookie is None:
raise NotImplementedError(
f"{type(self.backend).__name__} does not support the mutable cookie api"
)
set_cookie(self.session, name, value, domain=domain, path=path)
def get_cookies(self) -> dict:
"""all cookies stored in the backend's cookie store"""
get_cookies = getattr(self.backend, "get_cookies", None)
if get_cookies is None:
raise NotImplementedError(
f"{type(self.backend).__name__} does not support the mutable cookie api"
)
return get_cookies(self.session)
def clear_cookies(self) -> None:
"""clear the backend's cookie store"""
clear_cookies = getattr(self.backend, "clear_cookies", None)
if clear_cookies is None:
raise NotImplementedError(
f"{type(self.backend).__name__} does not support the mutable cookie api"
)
clear_cookies(self.session)
# -------------------------------------------------------------------------
# lifecycle — backends close differently, so route through the backend