?
Solved

Explanation about CInternetSession headers

Posted on 2001-06-21
2
Medium Priority
?
521 Views
Last Modified: 2013-11-20
I need a clear explanation about the Headers in the CInternetSession which comes under CHttpConnection::AddRequestHeaders.

I need to download a HTML file from the HTTP server.
0
Comment
Question by:sunsrigod
2 Comments
 

Accepted Solution

by:
baston earned 150 total points
ID: 6214352
Hi,

The request headers are a bunch of data your browser (or application) sends along with the page request.
It basically helps the server identify the capabilities of your browser and the type of data it can accept.
Let's see the most common ones (the ones I use):

"User-Agent" - Identifies the program/client to the server, mostly for statistics purpose.

"Accept-Language" - tells the server the type of language you accept or can deal with.

"Accept-Encoding" - the file encoding your browser accept.

"Connection" - tells the server whether to keep the connection open or to treat every request as a seperate one. this is usually set to  "Keep-Alive".

"Accept" - type of files you accept, it's divided to type (like "text", "image","application") and the extension, like ("jpeg","gif","plain") to form pairs: "image/jpeg", "text/html" etc.

Request headers are very simple to use. just define the ones you wish to include in the request, seperating them with CRLF and attach them using AddRequestHeaders() to your request.
It looks something like this:

----------------------------------------------
CString szAllInAll =
_T("Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/msword, application/x-comet, */*\rAccept-Language: he,en;q=0.5\rContent-Type: application/x-www-form-urlencoded\rAccept-Encoding: gzip, deflate\rUser-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows 98)\rConnection: Keep-Alive\r");

CHttpFile *pFile;

// Opening CInternetSession...
// Getting the connection..
// opening the CHttpFile

pFile->AddRequestHeaders(szAllInAll,HTTP_ADDREQ_FLAG_REPLACE | HTTP_ADDREQ_FLAG_ADD);

pFile->SendRequest();

(I used MSIE 5.01 headers)
--------------------------------------------------
that's it! pretty strait forward.
for more info: http://www.w3.org/Protocols/HTTP/HTRQ_Headers.html

Asaf
0
 

Author Comment

by:sunsrigod
ID: 6214961
thank U Asaf
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction: Displaying information on the statusbar.   Continuing from the third article about sudoku.   Open the project in visual studio. Status bar – let’s display the timestamp there.  We need to get the timestamp from the document s…
Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Integration Management Part 2
Suggested Courses

621 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question