questions about lua plugin

[Esmq]

hi,all


i have two questions about lua plugin. 


1) can lua plugin produce 301 (permanent) redirect ? 
    i found that request:redirect(url) will only produce a 302 redirect...


2) when use lua plugin to product a 302 redirect,  
i found that it will generated a "ERR_CONNECT_FAIL/302" log entry to the log 
file~ but actually , i think it is not a ERROR...




thanks