Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.7.0 to 2.8.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/urllib3/urllib3/releases">urllib3's
releases</a>.</em></p>
<blockquote>
<h2>2.8.0</h2>
<h2>🚀 urllib3 is fundraising for HTTP/2 support</h2>
<p><a
href="https://sethmlarson.dev/urllib3-is-fundraising-for-http2-support">urllib3
is raising ~$40,000 USD</a> to release HTTP/2 support and ensure
long-term sustainable maintenance of the project. If your company or
organization uses Python and would benefit from HTTP/2 support in
Requests, pip, cloud SDKs, and thousands of other projects <a
href="https://opencollective.com/urllib3">please consider contributing
financially</a> to ensure HTTP/2 support is developed sustainably and
maintained for the long-haul.</p>
<p>Thank you for your support.</p>
<h2>Security</h2>
<p>Fixed the following security issues:</p>
<ul>
<li>The TLS configuration for HTTPS proxies could be ignored or
overridden. (High severity, GHSA-8988-9cw3-xx77)</li>
<li><code>HTTPResponse.stream()</code> and <code>read_chunked()</code>
could buffer a chunk-size line of unbounded length in memory. (High
severity, GHSA-vxq7-64xx-v4gw)</li>
<li>Chunked Deflate streaming could enter an infinite loop. (Medium
severity, GHSA-gh4c-6fx4-qh6g)</li>
</ul>
<blockquote>
<p>[!IMPORTANT]
urllib3 2.8.0 fixes HTTPS proxy TLS configuration being ignored or
overridden by destination settings. Configurations relying on that
behavior may require changes.</p>
<p>Configure proxy CA certificates and client certificates in
<code>proxy_ssl_context</code>, and proxy identity checks with
<code>proxy_assert_hostname</code> or
<code>proxy_assert_fingerprint</code>. Destination client certificates
and identity overrides no longer apply to HTTPS forwarding proxy
connections.</p>
</blockquote>
<blockquote>
<p>[!NOTE]
CVE IDs had not yet been assigned to these advisories at the time of
release due to a backlog at GitHub's CNA.</p>
</blockquote>
<h2>Deprecations & Removals</h2>
<ul>
<li>Deprecated using an empty collection as the <code>Retry</code>
option <code>allowed_methods</code> to retry any verb. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5044">#5044</a>)</li>
</ul>
<h2>Features</h2>
<ul>
<li>Added <code>Url.auth_decoded</code> and
<code>Url.auth_decoded_joined</code> convenience properties to the
result of <code>parse_url()</code>. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/4945">#4945</a>)</li>
<li>Added <code>basic_auth_encoding</code> and
<code>proxy_basic_auth_encoding</code> parameters to
<code>urllib3.util.make_headers()</code>. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5092">#5092</a>)</li>
</ul>
<h2>Bugfixes</h2>
<ul>
<li>
<p>Fixed response header handling to replace obsolete folded header
lines (<code>obs-fold</code>) with spaces in accordance with RFC 9112,
preventing raw CRLF sequences from appearing in header values such as
<code>Set-Cookie</code>. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/1362">#1362</a>)</p>
</li>
<li>
<p>Fixed usage of <code>proxy_ssl_context</code> with
<code>ProxyManager</code> when
<code>use_forwarding_for_https=True</code>. Passing
<code>ssl_context</code> instead of <code>proxy_ssl_context</code> for
HTTPS proxies in this configuration now emits a
<code>FutureWarning</code> and will raise an error in v3.0. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/2577">#2577</a>)</p>
</li>
<li>
<p>Changed behavior of the default <code>ConnectionPool.pool</code>
initialization. <code>LifoQueue</code> is now resolved from the
<code>queue</code> module after the <code>ConnectionPool</code> is
instantiated instead of using the default cached <code>QueueCls</code>
class property. This is done because sometimes the
<code>queue.LifoQueue</code> is monkey-patched late in the program, such
as by gevent. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3289">#3289</a>)</p>
</li>
<li>
<p>Raised <code>UnrewindableBodyError</code> instead of
<code>ValueError</code> when retrying a request whose body had
<code>tell()</code> but not <code>seek()</code>. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3779">#3779</a>)</p>
</li>
<li>
<p>Decoded percent-encoded SOCKS proxy credentials before authenticating
with the proxy server. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/3785">#3785</a>)</p>
</li>
<li>
<p>Fixed <code>HTTPResponse.drain_conn()</code> to discard unread
response data in 64 KiB chunks (same as the default <code>amt</code>
when doing <code>HTTPResponse.stream(...)</code>). (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5019">#5019</a>)</p>
</li>
<li>
<p>Fixed <code>is_ipaddress()</code> to detect non-standard IPv4 forms
accepted by <code>socket.connect</code>, such as hex
(<code>0x7f000001</code>), octal (<code>0177.0.0.1</code>), and decimal
integers (<code>2130706433</code>), ensuring SSL certificate
verification uses the correct mode for these addresses. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5029">#5029</a>)</p>
</li>
<li>
<p>Fixed <code>HTTPConnectionPool.urlopen</code> raising a misleading
<code>FullPoolError</code> instead of <code>ValueError</code> when
called with an invalid <code>timeout</code> argument on a pool created
with <code>block=True</code>. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5059">#5059</a>)</p>
</li>
<li>
<p>Fixed port-zero handling to preserve explicit <code>:0</code> values
instead of substituting the default ports 80 or 443 in URL parsing, pool
selection, proxy configuration, <code>connection_from_url()</code>, and
HTTP/2 request authority. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5071">#5071</a>,
<a
href="https://redirect.github.com/urllib3/urllib3/issues/5101">#5101</a>)</p>
</li>
<li>
<p>Fixed a bug where <code>PoolManager</code> passed the
<code>assert_hostname</code> and <code>assert_fingerprint</code>
parameters to HTTP connection pools. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5077">#5077</a>)</p>
</li>
<li>
<p>Fixed <code>HTTPConnectionPool.urlopen()</code> and HTTP proxy
forwarding to strip URL fragments from absolute request targets before
sending requests. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5079">#5079</a>)</p>
</li>
<li>
<p>Added safeguards to the proxy tunneling code to prevent potential
security issues when handling invalid characters in the proxy host and
HTTP headers. This change affects users of Python 3.10, Python 3.11, and
Python 3.12 when the standard library does not contain the fix; those on
newer Python versions should upgrade to 3.13.14+ or 3.14.5+ to get the
same security fixes. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5091">#5091</a>)</p>
</li>
<li>
<p>Fixed <code>HTTPSConnection.connect()</code> overriding
<code>ProxyConfig.ssl_context</code>'s certificate policy and proxy
identity checks with the target connection's TLS settings when
forwarding through an HTTPS proxy.</p>
<p><code>HTTPSConnection</code> no longer applies target SNI,
assertions, or client credentials to forwarding proxy handshakes and
continues to use its <code>ssl_context</code> as a fallback when an
HTTPS proxy forwards an HTTP target. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5093">#5093</a>)</p>
</li>
<li>
<p>Fixed URL parsing to more strictly enforce RFC 3986 host syntax,
rejecting invalid host input such as raw spaces and control characters,
malformed percent-encodings, and percent-encoded control characters in
HTTP(S) hosts and IPv6 zone identifiers, including proxy CONNECT tunnel
targets. Host normalization now also follows RFC 3986 normalization
rules for percent-encoded octets by decoding percent-encoded unreserved
characters and uppercasing the hexadecimal digits of retained
percent-encoded octets. (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5095">#5095</a>)</p>
</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/urllib3/urllib3/blob/main/CHANGES.rst">urllib3's
changelog</a>.</em></p>
<blockquote>
<h1>2.8.0 (2026-09-15)</h1>
<h2>Security</h2>
<p>Fixed the following security issues:</p>
<ul>
<li>The TLS configuration for HTTPS proxies could be ignored or
overridden.
(High severity, <code>GHSA-8988-9cw3-xx77
<https://github.com/urllib3/urllib3/security/advisories/GHSA-8988-9cw3-xx77></code>__)</li>
<li><code>HTTPResponse.stream()</code> and <code>read_chunked()</code>
could buffer a chunk-size
line of unbounded length in memory. (High severity,
<code>GHSA-vxq7-64xx-v4gw
<https://github.com/urllib3/urllib3/security/advisories/GHSA-vxq7-64xx-v4gw></code>__)</li>
<li>Chunked Deflate streaming could enter an infinite loop. (Medium
severity,
<code>GHSA-gh4c-6fx4-qh6g
<https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g></code>__)</li>
</ul>
<p>.. caution::</p>
<pre><code>urllib3 2.8.0 fixes HTTPS proxy TLS configuration being
ignored or
overridden by destination settings. Configurations relying on that
behavior may require changes.
<p>Configure proxy CA certificates and client certificates in
<code>proxy_ssl_context</code>, and proxy identity checks with
<code>proxy_assert_hostname</code> or
<code>proxy_assert_fingerprint</code>.
Destination client certificates and identity overrides no longer
apply to HTTPS forwarding proxy connections.
</code></pre></p>
<h2>Deprecations & Removals</h2>
<ul>
<li>Deprecated using an empty collection as the <code>Retry</code>
option
<code>allowed_methods</code> to retry any verb.
(<code>[#5044](https://github.com/urllib3/urllib3/issues/5044)
<https://github.com/urllib3/urllib3/issues/5044></code>__)</li>
</ul>
<h2>Features</h2>
<ul>
<li>Added <code>Url.auth_decoded</code> and
<code>Url.auth_decoded_joined</code> convenience
properties to the result of <code>parse_url()</code>.
(<code>[#4945](https://github.com/urllib3/urllib3/issues/4945)
<https://github.com/urllib3/urllib3/issues/4945></code>__)</li>
<li>Added <code>basic_auth_encoding</code> and
<code>proxy_basic_auth_encoding</code> parameters to
<code>urllib3.util.make_headers()</code>.
(<code>[#5092](https://github.com/urllib3/urllib3/issues/5092)
<https://github.com/urllib3/urllib3/issues/5092></code>__)</li>
</ul>
<h2>Bugfixes</h2>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/urllib3/urllib3/commit/b1d30ab61fe0db8f11092805e8c5ac43e091064a"><code>b1d30ab</code></a>
Release 2.8.0</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/9016d7e8afc68185496ef07f3c3a4a743d04922e"><code>9016d7e</code></a>
Skip <code>test_read_chunked_with_trailing_data_does_not_hang</code> for
brotlicffi (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5258">#5258</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/9101f581a8b3659af23b6ff335ae77200ca33533"><code>9101f58</code></a>
Fix <code>nox -s docs</code> warning (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5256">#5256</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/cd770b059b543be29298ea5c52afb0b1b090f5ed"><code>cd770b0</code></a>
Merge commit from fork</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/ea2ad7b21a80da3632f80016526a18864586077f"><code>ea2ad7b</code></a>
Merge commit from fork</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/0716e31534345dc1599ea95d903c79f276239bd8"><code>0716e31</code></a>
Fix loading unencrypted client keys with a password in pyOpenSSL (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5255">#5255</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/43c68c8b43a9dcb44ed2cf4ec91384ca0d46b37d"><code>43c68c8</code></a>
Test pickling of <code>InvalidChunkLength</code> (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5247">#5247</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/308b279b3fb28e7bee952e152ec5baeb5bfd0817"><code>308b279</code></a>
Share security policy between GitHub and Read the Docs (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5253">#5253</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/53fa0731b27d4b71ab0755ea5b896422d005d706"><code>53fa073</code></a>
Add policy on duplicate pull requests (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5252">#5252</a>)</li>
<li><a
href="https://github.com/urllib3/urllib3/commit/5f2a6a843d0100d1351c3f94d58581ca98d17267"><code>5f2a6a8</code></a>
Assert on the ALPN extension in test_tunnel_sets_http_11_alpn (<a
href="https://redirect.github.com/urllib3/urllib3/issues/5232">#5232</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/urllib3/urllib3/compare/2.7.0...2.8.0">compare
view</a></li>
</ul>
</details>
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Automated OpenWiki documentation update.
OpenWiki result: success
When the result is `failure`, this PR intentionally preserves only the
pages completed before the failure. Merge it to make that progress the
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Co-authored-by: npentrel <5212232+npentrel@users.noreply.github.com>
`ModelFallbackMiddleware` now removes unsupported cache keys and
Fireworks session-affinity headers before fallback attempts, while
preserving cache settings supported by the selected fallback model.
---
When an agent falls back to another provider, explicitly supplied cache
settings in `ModelRequest.model_settings` can reach a model that does
not accept them and cause the fallback to fail.
`ModelFallbackMiddleware` now removes `x-session-affinity` for
non-Fireworks fallbacks and removes `prompt_cache_key` for providers
outside Fireworks, OpenAI, and Azure OpenAI. It preserves unrelated
settings and headers, retains the existing Anthropic cache-marker
handling, and leaves the original request unchanged. Unit tests cover
synchronous and asynchronous fallback, supported cache-key preservation,
and header cleanup.
Stacked on #38823. This PR contains only the fallback cleanup and its
tests. The Fireworks middleware in the base PR works independently
because its generated affinity is consumed directly by `ChatFireworks`.
Review focus: provider support is determined through `_llm_type`;
`prompt_cache_key` is shared by multiple providers and must not be
treated as Fireworks-only.
Added `FireworksPromptCachingMiddleware` to improve prompt-cache reuse
across calls in the same agent thread. Explicit affinity settings take
precedence, and no affinity is generated without a thread ID.
---
Fireworks agents need consistent routing to reuse a replica's prompt
cache across turns. `FireworksPromptCachingMiddleware` supplies session
affinity from a SHA-256 hash of `config.configurable.thread_id`, while
respecting explicit `user`, `prompt_cache_key`, and `x-session-affinity`
settings on the selected model or request.
Affinity is scoped to the call and applied by `ChatFireworks` when
invoking the API. Generated affinity stays out of shared request
settings, and model-local headers remain scoped to their owning model,
including during fallback. This works with either ordering of the
caching and fallback middleware for a Fireworks primary model.
Related fallback cleanup for explicitly supplied cache settings is in
#40886, stacked on this PR. This PR works independently of that change.
---------
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
`ChatFireworks` now reports mid-stream read timeouts as retryable
`ModelTimeoutError`s while remaining catchable as `httpx.ReadTimeout`.
Partial streams are not automatically replayed.
---
Fireworks stream read timeouts currently bypass LangChain's model-error
classification after the first chunk. Classify them as retryable
`ModelTimeoutError`s while preserving `httpx.ReadTimeout` compatibility,
the original cause, and request context when available.
- Covers synchronous and asynchronous stream consumption.
- Keeps setup retries unchanged. Does **not** replay partial streams:
doing so could duplicate text or corrupt tool-call arguments.
Whole-generation recovery remains the caller's responsibility.
- Built-in streaming retry and fallback behavior is unchanged:
`.with_retry()` does not retry streaming, and `.with_fallbacks()` only
switches models before the first chunk. Applications must explicitly
handle recovery after output has started.
Made by [Open SWE](https://github.com/langchain-ai/open-swe) · [view
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· openai:gpt-6-astra (medium)
Co-authored-by: Mason Daugherty <mdrxy@users.noreply.github.com>
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
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`ChatFireworks` can replay historical tool calls with malformed or
non-object JSON arguments without forwarding invalid argument strings to
Fireworks.
---
Fireworks rejects conversation history containing malformed or
non-object tool-call arguments, preventing an agent from recovering on
its next turn.
Wrap these arguments in a JSON object under
`__invalid_tool_call_arguments` when serializing history, preserving the
original payload, call IDs, and tool-result pairing. Apply this to
parsed and raw tool-call history without mutating messages or executing
repaired arguments; valid object strings stay unchanged.
Made by [Open SWE](https://github.com/langchain-ai/open-swe) · [view
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· openai:gpt-6-astra (medium)
Co-authored-by: Mason Daugherty <mdrxy@users.noreply.github.com>
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
Closes#40793
---
Docs-only repair from a full audit of developer-facing markdown against
the repository as source of truth. A new contributor following
`AGENTS.md` from the repo root currently hits missing files and commands
that cannot run; package docs and a workflow comment also drift from
reality.
**What was wrong**
- `AGENTS.md` listed root-level `pyproject.toml`, `uv.lock`, and
`Makefile` as key config files — none exist at the repo root (config is
per package under `libs/*/`).
- Setup/test/lint examples (`uv sync --all-groups`, `make test` / `lint`
/ `format`) had no working directory, so they fail if copy-pasted from
the root.
- The monorepo structure tree omitted `openwiki/` and `AGENTS.md`.
- `libs/README.md` omitted the `model-profiles/` package from its
directory list.
- Root `README.md` linked Deep Agents with `http://` while every other
docs link uses `https://`.
- The PR-title paragraph claimed scopes are mandatory “with no
exceptions”, but `pr_lint.yml` sets `requireScope: false` (only empty
`type():` parens are rejected).
- Grammar (“require” → “requires”), an unfinished editable-installs
sentence, incomplete `pr_lint.yml` scope comment (missing `openrouter`,
`typesafe`), and a stale `make help` line pointing at a non-existent
top-level Makefile.
**What changed**
- Clarified per-package config layout and required `cd` into
`libs/<package>` before `uv` / `make` commands.
- Completed the structure diagram; added `model-profiles/` to
`libs/README.md`.
- Switched Deep Agents links to `https://`.
- Aligned the scope guidance with actual CI behavior (documented, did
not change `requireScope`).
- Tightened the `pr_lint.yml` comment and removed the dead Makefile help
line.
No runtime code, tests, or CI logic changed — comments and markdown
only.
AI assistance was used to prepare this change; I reviewed the diff
against the repository layout.
Automated OpenWiki documentation update.
OpenWiki result: success
When the result is `failure`, this PR intentionally preserves only the
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dependabot[bot]