Function q_connect 

pub unsafe extern "C" fn q_connect(
    host: *const c_char,
    port: c_int,
    user: *const c_char,
    password: *const c_char,
    timeout_ms: c_int,
) -> c_int

Open a TCP connection to a Q server and perform the login handshake. Returns a connection fd (>= 0), or a negative Q_ERR_* code.