Hello, need some help on using Rcurl to navigate a site and the use of
session cookies. I suspect the issue i am having presently is I am not
handling session cookies properly.
At a high level, in need to create a dataset for some analysis, my
background is in using R for statistical work, I am very inexperienced
in HTTP and XML type of coding. Basically, like to use R for a mashup
project I have. Navigate to a web site, login, query some data, clean
the data and create a date frame, navigate to another site, run some
queries and append to the data frame.
I have determined that RCurl has all the necessary power to do the
navigation and form submission, but I am struggling to get this to work.
I have read the help articles around RCurl, but after days of trying,
hitting a wall.
Code so far:
library(RCurl)
library(XML)
txt2 <- postForm("http://www.dailyreportonline.com/siteLogin.asp";,
origin = "",
queryDB = "",
form_username = "zubin",
form_password = "xxxx",
form_save_login = "on",
login = "Submit")
htmlTreeParse(txt2, asText = TRUE)
This successfully navigates to the site, but its not submitting the form
information and logging in, something is not completely correct. I
contacted an expert and they indicated that most likely I am not
handling session cookies properly.
Does someone have example RCurl code that submits a form to a site using
session cookies, keeps a session open and then performs a sequence of
operations? I think that may help me learn what i need to do. Rcurl
seems very powerful. I will need to keep a session open as i login,
navigate, submit another form within the site and retrieve data.
I most likely may need some formal help, so any students familiar with
HTTP, XML, and R wanting to earn some money, please contact me.
-zubin
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