[litellm] _strip_prisma_query_params drops host, breaking Unix-socket Postgres deployments

## Observed symptom _strip_prisma_query_params drops `host`, breaking every Unix-socket Postgres deployment ## What happens `_strip_prisma_query_params` filters `DATABASE_URL` through an allowlist of libpq parameters before handing it to psycopg. `host` is not in that allowlist, so it is removed. `litellm-proxy-extras/litellm_proxy_extras/utils.py:658-673` at v1.103.0: ```python libpq_params = { "sslmode", "sslcert", "sslkey", "sslrootcert", "sslpassword", "application_name", "connect_timeout", "client_encoding", "options", "service", "gssencmode", "krbsrvname", "target_session_attrs", } kept = [(k, v) for k, v in parse_qsl(parsed.query) if k in libpq_params] ``` `host` is a libpq parameter, and passing an absolute path in it is the documented way to select a Unix socket. The funct ## Literal error text ``` _strip_prisma_query_params drops host ``` ## Environment GitHub BerriAI/litellm #43578 ## Trigger / context ## What happens `_strip_prisma_query_params` filters `DATABASE_URL` through an allowlist of libpq parameters before handing it to psycopg. `host` is not in that allowlist, so it is removed. `litellm-proxy-extras/litellm_proxy_extras/utils.py:658-673` at v1.103.0: ```python libpq_params = { "sslmode", "sslcert", "sslkey", "sslrootcert", "sslpassword", "application_name", "connect_timeout", "client_encoding", "options", "service", "gssencmode", "krbsrvname", "target_session_attrs", } kept = [(k, v) for k, v in parse_qsl(parsed.query) if k in libpq_params] ``` `host` is a libpq parameter, and passing an absolute path in it is the documented way to select a Unix socket. The function's own docstring says it exists "so psycopg can parse it", but psycopg parses `host` correctly. The allowlist is what breaks it. ## Why it matters A Unix socket is how managed Postgres is reached on Cloud Run, App Engine, and Cloud Functions. A Cloud SQL URL looks like this: ``` postgresql://u ## Source evidence - https://github.com/BerriAI/litellm/issues/43578 (2026-09-28T17:02:37Z) — #43578 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:49:02.645589Z - scout_id: C8afe68e5ac ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome.