fix(auth): strip whitespace from HTTP header values to prevent h11 rejection

[privatejava]

Related Issue

Resolve #1226 #1227, #1220

Description

Kimi throws an error LLM Provider error when trying from Ubuntu 22.04.5 LTS .

On some Linux systems, platform.version() returns a kernel version string with a trailing space (e.g. "#100~22.04.1-Ubuntu SMP ... UTC "). This trailing whitespace violates RFC 7230 field-value grammar, causing h11 to raise LocalProtocolError: Illegal header value and making the CLI unable to connect to the API.

The existing _ascii_header_value() only stripped whitespace in the UnicodeEncodeError fallback path. This change ensures .strip() is always applied, matching the behavior that was already intended for the non-ASCII path.

Here is the detailed logs from ~/.kimi/logs/kimi.log

2026-02-23 19:14:39.432 | ERROR    | kimi_cli.ui.shell:run_soul_command:253 - LLM provider error:
Traceback (most recent call last):

  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpx/_transports/default.py", line 101, in map_httpcore_exceptions
    yield
  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpx/_transports/default.py", line 394, in handle_async_request
    resp = await self._pool.handle_async_request(req)
                 │    │     │                    └ <Request [b'POST']>
                 │    │     └ <function AsyncConnectionPool.handle_async_request at 0x7f9ca92f0540>
                 │    └ <AsyncConnectionPool [Requests: 0 active, 0 queued | Connections: 0 active, 0 idle]>
                 └ <httpx.AsyncHTTPTransport object at 0x7f9ca9425fd0>
  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpcore/_async/connection_pool.py", line 256, in handle_async_request
    raise exc from None
  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpcore/_async/connection_pool.py", line 236, in handle_async_request
    response = await connection.handle_async_request(
                     │          └ <function AsyncHTTPConnection.handle_async_request at 0x7f9ca92e7600>
                     └ <AsyncHTTPConnection ['https://api.kimi.com:443', HTTP/1.1, CLOSED, Request Count: 1]>
  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpcore/_async/connection.py", line 103, in handle_async_request
    return await self._connection.handle_async_request(request)
                 │    │           │                    └ <Request [b'POST']>
                 │    │           └ <function AsyncHTTP11Connection.handle_async_request at 0x7f9ca92e63e0>
                 │    └ <AsyncHTTP11Connection ['https://api.kimi.com:443', CLOSED, Request Count: 1]>
                 └ <AsyncHTTPConnection ['https://api.kimi.com:443', HTTP/1.1, CLOSED, Request Count: 1]>
  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpcore/_async/http11.py", line 136, in handle_async_request
    raise exc
  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpcore/_async/http11.py", line 86, in handle_async_request
    await self._send_request_headers(**kwargs)
          │    │                       └ {'request': <Request [b'POST']>}
          │    └ <function AsyncHTTP11Connection._send_request_headers at 0x7f9ca92e6480>
          └ <AsyncHTTP11Connection ['https://api.kimi.com:443', CLOSED, Request Count: 1]>
  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpcore/_async/http11.py", line 144, in _send_request_headers
    with map_exceptions({h11.LocalProtocolError: LocalProtocolError}):
         │               │   │                   └ <class 'httpcore.LocalProtocolError'>
         │               │   └ <class 'h11._util.LocalProtocolError'>
         │               └ <module 'h11' from '/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/h11/__init__.py'>
         └ <function map_exceptions at 0x7f9ca942fa60>
  File "/home/narayan/.local/share/uv/python/cpython-3.13.11-linux-x86_64-gnu/lib/python3.13/contextlib.py", line 162, in __exit__
    self.gen.throw(value)
    │    │   │     └ LocalProtocolError("Illegal header value b'#100~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Mon Jan 19 17:10:19 UTC '")
    │    │   └ <method 'throw' of 'generator' objects>
    │    └ <generator object map_exceptions at 0x7f9c8fe932e0>
    └ <contextlib._GeneratorContextManager object at 0x7f9c8feb4ec0>
  File "/home/narayan/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/httpcore/_exceptions.py", line 14, in map_exceptions
    raise to_exc(exc) from exc
          └ <class 'httpcore.LocalProtocolError'>

httpcore.LocalProtocolError: Illegal header value b'#100~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Mon Jan 19 17:10:19 UTC '

Checklist

• I have read the CONTRIBUTING document.
• I have linked the related issue, if any.
• I have added tests that prove my fix is effective or that my feature works.
• I have run make gen-changelog to update the changelog.
• I have run make gen-docs to update the user documentation.

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 1 additional finding.

[leonardobrunelli-OX]

You can manually patch the OAuth module in your installation.

edit this file:

Edit the oauth.py file in your uv tools installation

nano /home/USERFOLDER/.local/share/uv/tools/kimi-cli/lib/python3.13/site-packages/kimi_cli/auth/oauth.py
Find the _common_headers() function (around line 155) and change:

Before (broken):

"X-Msh-Os-Version": platform.version(),

After (fixed):

"X-Msh-Os-Version": platform.version().replace("#", "").strip(),

[gurudk]

这个预计在哪个版本发布解决，试了1.14还有这个问题

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In which version is this expected to be released? I tried 1.14 and still have this problem