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HTTP_STATUS_LENGTH_REQUIRED
The server requires an explicit body length before it will accept the request. A client can retry with a valid Content-Length value when the request format and transport allow it.
Check whether the client sent a body, used chunked transfer coding, or stripped framing headers at an intermediary. Do not calculate a length from character count when the body is encoded bytes.
This response is about request framing, not the size of the representation itself. A client that can determine the body length can resend the request with Content-Length if the method and authentication flow permit it. If the body is streamed with unknown length, use a transfer mechanism accepted by that server or endpoint.
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