apr_sockaddr_info_get is blocked if network is very poor

[许长法]

Dear apr dev team,

       I am now using apr to setup a tcp client. When the network is very pool, 
calling apr_sockaddr_info_get will block about 40s and returns fail.
       I want to know if there is a non-block apr_sockaddr_info_get or there is 
a timeout option to set ?

       Looking forward to your reply. 


Best Regards!