Thanks for your response，i will retry this. I have another question，for high performance，can i firstly create many easy handles，then use them，such as memory poll，this will avoid to create and destroy frequently？ Does this make sense？if make sense，which API can do this for multi interface？ thanks！
------------------------------------------------------------------- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.html
