以下面链接网址为例:(这是百度mp3一个下载地址)
http://www.jxgymy.com/xzgzs/music/mp3/6.mp3
MSDN上这样解释QueryInfo函数:
Call this member function to return response or request headers from an HTTP request. Use this member function only after a successful call to SendRequest or on a CHttpFile object successfully created by OpenURL.
我是在OpenURL(上面网址)成功之后调用QueryInfo函数,在这里详细说明一下,MSDN上面QueryInfo函数的各个属性值的涵义。
1,HTTP_QUERY_STATUS_TEXT
值:“OK”
2,HTTP_QUERY_RAW_HEADERS
值:HTTP/1.1 200 OK
3,HTTP_QUERY_STATUS_CODE
值:200
4,HTTP_QUERY_VERSION
值:HTTP/1.1
5,HTTP_QUERY_LAST_MODIFIED
值:Tue, 27 Feb 2007 08:41:37 GMT
6,HTTP_QUERY_CONTENT_TYPE
值:audio/mpeg