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ensure_subscribe_set_backend_success

futu_backend::quote_sub

Function ensure_subscribe_set_backend_success 

pub fn ensure_subscribe_set_backend_success(
    result: Option<i32>,
    warning_code: Option<i32>,
    max_sub_count: Option<i32>,
) -> Result<SubscribeSetBackendStatus, SubscribeSetBackendReject>
Expand description

Interpret backend SubscribeSetRsp status fields without taking a dependency on the generated proto type.

Missing result follows C++’s nSvrRet = -1 fallback. Missing warning_code and max_sub_count preserve the existing Rust wire-facing defaults, because C++ only uses result for success/failure in this path.