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prefect.server.utilities.http

should_redact_header(key)

Indicates whether an HTTP header is sensitive or noisy and should be redacted from events and templates.

Source code in src/prefect/server/utilities/http.py 
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def should_redact_header(key: str) -> bool:
    """Indicates whether an HTTP header is sensitive or noisy and should be redacted
    from events and templates."""
    key = key.lower()
    if key in {"authorization", "traceparent", "via"}:
        return True
    if key.startswith("x-forwarded"):
        return True
    if key.startswith("x-b3"):
        return True
    if key.startswith("x-cloud-trace"):
        return True
    if key.startswith("x-envoy"):
        return True
    if key.startswith("x-prefect"):
        return True

    return False