Solved

Faking a POST

Posted on 1998-05-30
4
172 Views
Last Modified: 2013-12-25
I'm building a program that automates some web-research that I do on a regular basis. The prog is based around a simple telnet client and connects to various webservers to get it's info.

GET stuff is easy but even though I have the original RFC documents I cannot seem to find a good demonstration of how the POST mechanism works.

I am assuming that it uses a header with the infomation being sent to the CGI going in name = value pairs. Can anyone give me a good example of what these headers look like?

A straight dump of what a browser sends when actioning a FORM with POST method would be perfect.


Thanks
Marty
0
Comment
Question by:mravell
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
4 Comments
 
LVL 7

Accepted Solution

by:
faster earned 200 total points
ID: 1829015
It is not in a header.

For example:

POST /test.cgi HTTTP/1.0\r\n
Content-Length: 14\r\n
\r\n
name=12&age=21

0
 
LVL 7

Expert Comment

by:faster
ID: 1829016
Please note that an empty line is the end of headers, then the body comes which contains the form data.  Content-Length should contain the length of the body.

Normally the request generated by browser is more complex, but the above-mentioned is the ones that really matters.

Below is a real request (when the browser uses to a proxy)

POST http://dilbert.eccs.ap:82/u/EN/dbilogin/cgi/login_main.cgi HTTP/1.0
Accept: application/vnd.ms-excel, application/msword, image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*
Referer: http://dilbert.eccs.ap:82/u/EN/dbilogin/cgi/login_main.cgi?URI=http%3a//dilbert.eccs.ap%3a82/p/EN/home/cgi/DBI_home.cgi
Accept-Language: en-us
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 4.01; Windows 95)
Host: dilbert.eccs.ap:82
Content-Length: 129
Pragma: No-Cache

postdata...

Refer to RFC1945 for detail.
0
 

Author Comment

by:mravell
ID: 1829017
Hi faster,

Thanks for the reply. This is exactly what I needed!

How did you get the example you included in the reply? I have another question open in C and CGI areas asking for a network sniffer utility that would have let me find this stuff out myself. If you have such a beast you could get the points from those Q's as well. (I'd still like to get my hands on such a program)


Thanks
Marty
0
 
LVL 7

Expert Comment

by:faster
ID: 1829018
I used my proxy server to get the request from browser, so it is not really a sniffer.
0

Featured Post

How Do You Stack Up Against Your Peers?

With today’s modern enterprise so dependent on digital infrastructures, the impact of major incidents has increased dramatically. Grab the report now to gain insight into how your organization ranks against your peers and learn best-in-class strategies to resolve incidents.

Question has a verified solution.

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

Suggested Solutions

In this tutorial I will focus on how to use WhizBase as a tool for sending ICQ messages to ICQ. Here I will use a new technology in WhizBase, published in WhizBase 5.1 version. In this tutorial I will use 3 files, pager.wbsp for the processing, e…
Active Directory replication delay is the cause to many problems.  Here is a super easy script to force Active Directory replication to all sites with by using an elevated PowerShell command prompt, and a tool to verify your changes.
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.

749 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