import httpx

from .settings import settings


def downstream_client() -> httpx.AsyncClient:
    """An httpx.AsyncClient preconfigured with the 3s downstream timeout.
    Correlation travels as W3C `traceparent`, injected by the httpx
    instrumentation (common/telemetry.py) -- it replaced Phase 0's X-Request-Id."""
    return httpx.AsyncClient(timeout=settings.downstream_timeout_seconds)