Ok thanks for the suggestion. I will look into that. On Mon, Apr 18, 2011 at 5:27 AM, Barry Rowlingson [via R] < ml-node+3457010-2013527485-230...@n4.nabble.com> wrote:
> On Sun, Apr 17, 2011 at 11:56 PM, jmsc <[hidden > email]<http://user/SendEmail.jtp?type=node&node=3457010&i=0&by-user=t>> > wrote: > > The site does not require a login/password. Another way to access the > first > > site would be to go to the second site, click Connecticut, click > Canterbury, > > CT, enter the online database, click search under Query by Location with > > nothing in the search fields, and click the first property. Viewing the > > frame source on this page redirects to the second site. > > it doesn't require a login/pass, but it uses session cookies to > simulate a logged-in user (there's even a log out button that clears > the session). > > > Also, could you direct me to or give me some instructions on scanning > from > > sites that do require a login/password? Thanks. > > I had a quick look for R-help posts on this ( RSiteSearch("cookies"), > RSiteSearch("session") etc) but didn't find much. You probably want to > install RCurl and look at the examples. > > Generally what happens is that a successful login, or in this case > just visiting the database front page, causes the web server to send > back a 'cookie' with a long ID number in it. For every further access > to that web site your browser includes the cookie. The server then > looks up the ID, goes 'yup, this is a valid session', and sends you > the page you want. If the cookie isn't there, or the ID isn't valid > (and the ID numbers are big enough to make guessing impractical), then > you get the default page. > > Barry > > ______________________________________________ > [hidden > email]<http://user/SendEmail.jtp?type=node&node=3457010&i=1&by-user=t>mailing > list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > http://r.789695.n4.nabble.com/URL-Scan-tp3456084p3457010.html > To unsubscribe from URL Scan, click > here<http://r.789695.n4.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=3456084&code=am1zdGF0c29sdXRpb25zQGdtYWlsLmNvbXwzNDU2MDg0fDIwNjIxMjY3NjA=>. > > -- View this message in context: http://r.789695.n4.nabble.com/URL-Scan-tp3456084p3458336.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
