写适当的“HEAD”和“GET”请求在winsock c ++ [英] writing proper "HEAD" and "GET" request in winsock c++

问题描述

实际上，我正在编码使用winsock c + +下载文件，并获得我的HEAD标题。

这是我真正的）

 
 HEAD /files/ODBC%20Programming%20in%20C%2B%2B.pdf HTTP / 1.0 
主机： devmentor-unittest.googlecode.com 
 

回应是：

 
 HTTP / 1.0 404未找到
 Content-Type：text / html; CHARset = UTF-8 
 Set-Cookie：PREF = ID = feeed8106df5e5f1：TM = 1370157208：LM = 1370157208：S = 10bN4nrXqkcCDN5n; expires = Tue，02-Jun-2015 07:13:28 GMT; path = /; domain = devmentor-unittest.googlecode.com 
 X-Content-Type-Options：nosniff 
日期：Sun，02 Jun 2013 07:13:28 GMT 
服务器：codesite_downloads 
 Content-Length：974 
 X-XSS-Protection：1; mode = block 
 X-Frame-Options：SAMEORIGIN 
 

但是如果我这样做：

 
 GET /files/ODBC%20Programming%20in%20C%2B%2B.pdf HTTP / 1.0 
主机：devmentor-unittest.googlecode.com 
 
 
 
 
文件成功下载.... 
 
 
 
我触发HEAD请求...它也带来了以下
 
 HTTP / 1.0 200 OK 
 Content-Length：320381 
 Content-Type：application / pdf 
 Content-Disposition：attachment; filename =ODBC Programming in C ++。pdf
接受范围：bytes 
日期：Sun，02 Jun 2013 05:47:11 GMT 
最后修改：Sun，2007年11月11日03 ：17：59 GMT 
到期日：Sun，09 Jun 2013 05:47:11 GMT 
缓存控制：public，max-age = 604800 
服务器：DFE / largefile 
 //这样的东西..... 
 
问题：为什么HEAD首先返回假的error not found该文件被下载使用GET，下载后HEAD也会返回好东西我需要...哪里有我错了.. 
 
 
 
我试图的文件这里下载的是 http：// devmentor-unittest .googlecode.com / files / ODBC％20Programming％20in％20C％2B％2B.pdf （例如）
解决方案
 
问题不在你的结尾。 Google代码根本没有正确实现HEAD。这是 5年前报告的，仍然是一个未决问题：
 
 
 
 问题660：为文件下载网址支持HTTP HEAD方法 
 
Actually I was coding for downloading the files in HTTP using winsock c++ and to get the details I fired "HEAD" header..

(this is what actually I did)
HEAD /files/ODBC%20Programming%20in%20C%2B%2B.pdf HTTP/1.0
Host: devmentor-unittest.googlecode.com
Response was:
HTTP/1.0 404 Not Found
Content-Type: text/html; charset=UTF-8
Set-Cookie: PREF=ID=feeed8106df5e5f1:TM=1370157208:LM=1370157208:S=10bN4nrXqkcCDN5n; expires=Tue, 02-Jun-2015 07:13:28 GMT; path=/; domain=devmentor-unittest.googlecode.com
X-Content-Type-Options: nosniff
Date: Sun, 02 Jun 2013 07:13:28 GMT
Server: codesite_downloads
Content-Length: 974
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
But if I do:
GET /files/ODBC%20Programming%20in%20C%2B%2B.pdf HTTP/1.0
Host: devmentor-unittest.googlecode.com
The file sucessfully gets downloaded....

After then after I download, again if I fire the HEAD request... it also brings up the following
HTTP/1.0 200 OK
Content-Length: 320381
Content-Type: application/pdf
Content-Disposition: attachment; filename="ODBC Programming in C++.pdf"
Accept-Ranges: bytes
Date: Sun, 02 Jun 2013 05:47:11 GMT
Last-Modified: Sun, 11 Nov 2007 03:17:59 GMT
Expires: Sun, 09 Jun 2013 05:47:11 GMT
Cache-Control: public, max-age=604800
Server: DFE/largefile
//something like this.....
Question: why "HEAD" is returning the false "error not found" at first but the file gets downloaded in using "GET" and after downloading "HEAD" also returns goodies i need...where have i mistaken..

The file I am trying to download here is "http://devmentor-unittest.googlecode.com/files/ODBC%20Programming%20in%20C%2B%2B.pdf" (just for example)
解决方案
The problem is not on your end.  Google Code simply does not implement HEAD correctly.  This was reported 5 years ago and is still an open issue:

Issue 660: support HTTP HEAD method for file download urls

                        
这篇关于写适当的“HEAD”和“GET”请求在winsock c ++的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！