I do this kind of thing as my day job, so I can strongly recommend
'ethereal' - it's

"Like some sort of "tcpdump" like program
that listens on port 80 and nicely displays the data being
sent across (both ways)?"

http://www.ethereal.com/

You can mess about with html pages and formfind for fun, but if you want
to know what is actually sent, take a look, don't guess.

(Of course, if its SSL, you're out of luck).

Read the art of scripting carefully to understand how to convert what
you're seeing into curl requests - you might need to login, get a
cookie, follow redirects etc. etc. to get it to work properly.

Cris

Dustin Boswell wrote:
>
> Check out curl.haxx.se/curlprograms.html
> 1) it's got a program called SlashSMS.pl that does
> a similar thing (I doubt it'll suit your needs but
> might be interesting to look at).
> 2) formfind.pl is a cool little script that extracts
> the form data, so you (the programmer) can figure out
> what to send.
>
> To send a form look at the man page under the -d option...
>
> Sometimes I wonder how Netscape or IE is submitting a form...
> So I usually
> 1) save the html page.
> 2) search for <form action=url...>
> 3) change url to "http://mycomputer.com:2345"
> 4) save the modified html
> 5) open the new html in Netscape or IE.
> 6) type "nc -lp 2345" in Unix (hope you have Net Cat installed).
> 7) click the submit button on the form.
> 8) the request header from Netscape should come on the screen
> where you typed "nc -lp 2345"
>
> here I use 2345 as a random non-important port.
>
> --This is what I usually do... Is there a more efficient
> way of doing it? Like some sort of "tcpdump" like program
> that listens on port 80 and nicely displays the data being
> sent across (both ways)?
>
> -Good luck.
>
> On Tue, 3 Jul 2001, Nils Lohner wrote:
>
> Hello,
> I'm trying to figure out how to forward emails to my cell phone (or
> parts of them at least...) and need to figure out how/what to post as
> data. The email end is easy to do with procmail etc. but I can't
> figure out how to do the web side.
>
> I've looked at the man pages and tutorial, but that only seems to
> discuss forms and not whatever's used on the page I'm looking at.
>
> The web site is:
> <http://195.115.48.10/servlet/SMSServlet_KZ1OS9?redirect=SMS&LANGUAGE=FR
> &PAGE=launch>
> (or go to www.sfr.fr and then click on texto to get there)
>
> My main questions are:
> - how can I figure out what gets posted (i.e. can I post the data and
> capture it somehow to see what's in the fields?)
> - if not, how do I figure out what to send?
> - how do I send it (I assume that this is the easy part...)
>
> Thanks in advance for any help.
>
> Nils.
>
> -Dustin
Received on 2001-07-04