Function try_cmd_string_for_request_parts_and_payload 

pub fn try_cmd_string_for_request_parts_and_payload(
    parts: &(impl HttpRequestParts + AuthorityInputExt + ProtocolInputExt),
    payload: &Bytes,
) -> Result<String, CurlPayloadRequiresStdin>

Available on crate features http and std only.

Create a pure curl command string for the given request and inline payload.

This function refuses payloads that cannot be represented losslessly as a command-line argument. Use prepare_cmd_for_request_parts_and_payload for arbitrary bytes without a shell, or use try_cmd_string_for_request_parts_and_payload_with_options to select a platform-specific script target or external payload source.