200和206有什么区别呢？

 

HTTP请求中，有以下两个头，有什么区别呢？

http://wap.chinam.com/phone/wingtech_wtmp3_.jsp?f=ring/87/60/118915171876_23881.mp3
HTTP/1.1 206 Partial Content
Date: Thu, 29 May 2008 15:39:33 GMT
Server: Apache
Content-Length: 4
Connection: close
Content-Type: application/vnd.wap.mms-message

http://61.145.124.170/xiao/mtest/wingtech_wtmp3_.aspx
HTTP/1.1 200 OK
Connection: close
Date: Thu, 29 May 2008 15:38:47 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Cache-Control: private
Content-Type: application/vnd.wap.mms-message
Content-Length: 96283