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"Object Moved" error in using the RCurl getURL function in order to access an ASP Webpage

Answer 1

+1 A:

Use the followlocation curl option:

getURL(u,.opts=curlOptions(followlocation=TRUE))

with added cookiefile goodness - its supposed to be a file that doesnt exist, but I'm not sure how you can be sure of that:

w=getURL(u,.opts=curlOptions(followlocation=TRUE,cookiefile="nosuchfile"))

Spacedman 2010-09-01 09:54:16

Thank you for your prompt answer. I used the followlocation option, but I appears that getURL isn't executed at all. I left it's execution for almost over 5 min and still there hasn't been any kind of progress. Maybe some other curloption is needed?

2010-09-01 10:24:44

What happens if you getURL the URL given in the redirect?ie getURL("http://www.my_site.org/my_site/index.asp")?I assume your PC can connect to that web site okay.Try getting the command-line Curl client and seeing if that connects, then add the complication of doing it in R.

Spacedman 2010-09-01 10:30:18

@Spacedman,the command-line curl execution of the redirection leads after two more URL redirection outlines (with the appropriate "Object Moved" redirection message) to a point where the ASP REFID calling parameter is not recognized as an internal or external command

2010-09-01 11:08:03

Sounds impossible to get any further with this without access to the server.

Spacedman 2010-09-01 14:12:56

2010-09-01 14:44:11

Is there no way you can give us access to that server? Or can you find a public server that exhibits the same problem?

Spacedman 2010-09-01 14:50:39

2010-09-01 14:58:27

It seems to go into a mad loop over three redirects. The first redirect is also sending back some cookie info, which I imagine getURL isn't pushing back to the server on the redirect. curl on the command line does this, so it's not an R problem any more. It works on a web browser because the browser probably sends back the cookie info.The docs for curl say to use the -b option, which works on the command line. Not sure how to get this into R though..

Spacedman 2010-09-01 16:42:15

Indeed the curl cookie option "-L -b empty.txt" delivers some information after the loop. Nevertheless the 2 included ASP parameters won't be taken into account.

2010-09-03 09:41:43

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"Object Moved" error in using the RCurl getURL function in order to access an ASP Webpage

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