c++线程断点续传实现欢迎砸砖

vpchangxin 2014-03-27 07:41:50

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c++单线程断点续传实现欢迎砸砖
博客详细教程链接http://blog.csdn.net/vpingchangxin/article/details/22309067

免费提供下载链接 http://download.csdn.net/detail/vpingchangxin/7108649

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mujiok2003 2014-04-14

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引用 11 楼 vpingchangxin 的回复:

[quote=引用 9 楼 mujiok2003 的回复:] [quote=引用 8 楼 vpingchangxin 的回复:] 直接在网站上找个可以下载文件的链接贴进去就ok了好像好多Http服务器下载文件的都支持断点下载文件读取如果服务器不支持断点读文件应对服务器稍作配置一下

服务器不可能都让你修改的。 [/quote] http://curl.haxx.se/libcurl/c/curl_easy_setopt.html 打开上面链接ctrl+F 搜 CURLOPT_RESUME_FROM 看吧

Pass a long as parameter. It contains the offset in number of bytes that you want the transfer to start from. Set this option to 0 to make the transfer start from the beginning (effectively disabling resume). For FTP, set this option to -1 to make the transfer start from the end of the target file (useful to continue an interrupted upload).

When doing uploads with FTP, the resume position is where in the local/source file libcurl should try to resume the upload from and it will then append the source file to the remote target file.

中的Pass a long as parameter. It contains the offset in number of bytes that you want the transfer to start from 说设置一个long参数，它包含的偏移数就是你希望要传输的开始位置


/* Set the continuation offset.
   *
   * Note there is also a _LARGE version of this key which uses
   * off_t types, allowing for large file offsets on platforms which
   * use larger-than-32-bit off_t's.  Look below for RESUME_FROM_LARGE.
   */
  CINIT(RESUME_FROM, LONG, 21),

这个是 curl.h 中的注释更说明了大文件偏移设置请楼上滴看清楚curl的api后质疑[/quote] 不是所有无服务器都是遵守相同的协议的，这是我的意思。curl就是一个library而已。

vpchangxin 2014-04-14

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引用 9 楼 mujiok2003 的回复:

[quote=引用 8 楼 vpingchangxin 的回复:] 直接在网站上找个可以下载文件的链接贴进去就ok了好像好多Http服务器下载文件的都支持断点下载文件读取如果服务器不支持断点读文件应对服务器稍作配置一下

服务器不可能都让你修改的。 [/quote] http://curl.haxx.se/libcurl/c/curl_easy_setopt.html 打开上面链接ctrl+F 搜 CURLOPT_RESUME_FROM 看吧

Pass a long as parameter. It contains the offset in number of bytes that you want the transfer to start from. Set this option to 0 to make the transfer start from the beginning (effectively disabling resume). For FTP, set this option to -1 to make the transfer start from the end of the target file (useful to continue an interrupted upload).

When doing uploads with FTP, the resume position is where in the local/source file libcurl should try to resume the upload from and it will then append the source file to the remote target file.


/* Set the continuation offset.
   *
   * Note there is also a _LARGE version of this key which uses
   * off_t types, allowing for large file offsets on platforms which
   * use larger-than-32-bit off_t's.  Look below for RESUME_FROM_LARGE.
   */
  CINIT(RESUME_FROM, LONG, 21),

这个是 curl.h 中的注释更说明了大文件偏移设置请楼上滴看清楚curl的api后质疑