有时候为了测试网络情况,需要返回每个阶段的耗时时间,比如DNS解析耗时,建立连接所消耗的时间,从建立连接到准备传输所使用的时间,从建立连接到传输开始所使用的时间,整个过程耗时,下载的数据量,下载速度,上传数据量,上传速度等等。下面的脚本获取以上信息:
CURL的资料参见: http://curl.haxx.se/libcurl/c/curl_easy_getinfo.html
复制代码 代码如下:
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### author: plete upload. Bytes per second.)
content_type 就是content-Type,不用多说了,这是一个访问我博客首页返回的结果示例(text/html; charset=UTF-8);(The Content-Type of the requested document, if there was any.)
num_connects Number of new connects made in the recent transfer. (Added in 7.12.3)
num_redirects Number of redirects that were followed in the request. (Added in 7.12.3)
redirect_url When a HTTP request was made without -L to follow redirects, this variable will show the actual URL a redirect would take you to. (Added in 7.18.2)
ftp_entry_path The initial path libcurl ended up in when logging on to the remote FTP server. (Added in 7.15.4)
ssl_verify_result ssl认证结果,返回0表示认证成功。( The result of the SSL peer certificate verification that was requested. 0 means the verification was successful. (Added in 7.19.0))
若多次使用-w参数,按最后一个的格式输出。If this option is used several times, the last one will be used.