efrazer-oai d5bc4161b6 Add a Windows proxy authentication tunnel helper (#55994) ...

## What changed

Expose `connect_windows_proxy` for callers handling a CONNECT `407` response. Use libcurl with the signed-in Windows user's Negotiate or NTLM credentials, then return the authenticated connection with buffered data preserved.

Support HTTP and HTTPS proxies, with default or caller-provided TLS configuration. HTTPS proxies requiring authentication tokens bound to their TLS connection are unsupported.

Enable libcurl's NTLM support in Cargo and Bazel builds.

## Testing

Add a Windows-only test asserting that libcurl provides NTLM, SPNEGO, and SSPI support.

GitOrigin-RevId: 4ed7d2208766404b6125ce2f4b5f91de5616a37f

2026-10-21 21:50:55 +00:00

..

fixtures

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ca_env.rs

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windows_proxy_auth_features.rs

Add a Windows proxy authentication tunnel helper (#55994)

2026-10-21 21:50:55 +00:00