http:
Keep-Alive 和 非 Keep-Alive
http://www.360doc.com/content/18/0108/22/44856983_720346207.shtml
http://www.cnblogs.com/skynet/archive/2010/12/11/1903347.html
http:
http://www.360doc.com/content/18/0108/22/44856983_720346207.shtml
http://www.cnblogs.com/skynet/archive/2010/12/11/1903347.html