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* fix(vertex_ai): drop the caller's anthropic-version header on Claude /v1/messages Vertex reads the API version from the body's anthropic_version and answers 400 when a forwarded anthropic-version header names a different one, which anthropic SDK 2.x always does. Strip the header on the Python and LITELLM_RUST Vertex messages routes. * fix(vertex_ai): carry the caller's anthropic-version into the Claude /v1/messages body Vertex reads the API version from the body alone, so the caller's anthropic-version header now becomes the body's anthropic_version instead of a pinned vertex-2023-10-16. The 2023-01-01 and 2023-06-01 first-party versions keep vertex-2023-10-16, and the header itself is still never sent. Same change on the Python proxy and the Rust gateway. * fix(vertex_ai): follow drop_params for an anthropic-version Vertex does not accept Only versions Vertex accepts in the body (vertex-2023-10-16, 2026-10-21) are carried into anthropic_version. 2023-06-01, 2023-01-01, a blank header, or no header keep vertex-2023-10-16. Any other value drops to vertex-2023-10-16 under drop_params and answers a 400 naming drop_params without it, on the Python proxy and the Rust gateway. * refactor(vertex_ai): return the unsupported anthropic-version error as a value and keep Rust helpers and tests in place * fix(rust gateway): resolve os.environ drop_params and accept the same flag words as Python The gateway read drop_params: os.environ/NAME and words like yes as off, so the drop_params opt-out from the new anthropic-version 400 did not work there * docs(rust router): name Router::from_config in the crate README --------- Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com> |
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| Cargo.toml | ||
| README.md | ||
litellm-router scaffolds the model-list setup and deployment lookup portion of Python's litellm.Router. Router::from_config(&config, &env) maps configured public names to provider deployments and reads drop_params from litellm_settings and each deployment, resolving an os.environ/NAME value through env. Programmatic callers can collect (String, Deployment) entries into a Router
Lookup is exact and returns None for an unknown name. This extraction preserves the gateway's existing behavior: the last entry wins when public names repeat. Multiple deployments per model group, routing strategies, retries, cooldowns, and fallbacks are not implemented yet
The router owns deployment configuration and selection. The gateway handles HTTP errors and responses, while the inference-<fmt> crates execute provider calls and resolve credentials