pub fn common_http_auth_token(unix_ts: i64) -> Option<String>Expand description
Build the shared Futu common HTTP auth_token.
Ref: C++ NNProtoCenter/NNProtoCenter_Inner_Inline.h
NNProto_BuildCommonHttpClientToken() uses key PEHMABDNLXIOG65U,
server time, 30s period, and GenGoogleOTPCode_SHA1.