javascriptasp.netdopostback

How was this full URL found?

A co-worker took this url: https://www.rbi.org.in/Scripts/BS_PressReleaseDisplay.aspx which has month/year pagination via Javascript (see the elements on the right) and was able to give me this url:

https://www.rbi.org.in/Scripts/BS_PressReleaseDisplay.aspx?__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=%2FwEPDwUKMTg0MTg0MzQ2NmRk1lDKkbV9IbwhES0FyX%2BlSLhp%2FzA%3D&__VIEWSTATEGENERATOR=380F4D6F&__EVENTVALIDATION=%2FwEdAAiUUGGuo52vbcR6TOSGc2%2FnlK%2BXrsQEVyjeDxQ0A4GYXFBwzdjZXczwplb2HKGyLlqLrBfuDtX7nV3nL%2B5njT0xZDpy7WJnvc3tgXY08CYLJD%2BrfdwJAuBoVBISURIXWlx9xf1loRXvygROM%2FA1O%2BNHJounKCGGAHd04zzVhBPZz4BK5Wx46wqhV0iQkxGw1Nhr9A6c&hdnYear=2016&hdnMonth=12&UsrFontCntr%24txtSearch=&UsrFontCntr%24btn=

where I can replace the year after hdnYear and the month after hdnMonth with any year and month, and it will bring me directly to that page. I asked him how he did it, and he said "I used the Network tab in Chrome dev tools." That's about all I could get out of him.

Does anyone know exactly how this is done? For example, I'm now trying to discover similar way to get the actual url for each page of this site: http://www.ojk.go.id/id/regulasi/otoritas-jasa-keuangan/peraturan-dan-keputusan-dewan-komisioner/Default.aspx by looking at the Network tab as I change pages. There is nothing I can see in there that's similar to the above example.

Solution

  • This is how it was done for the rbi.org.in URL you've mentioned

    1. Open Chrome and go to the URL you've given
    2. Right click on the page and select Inspect
    3. Click on the Network tab.
    4. Click on one of the year/month links on the website (the pagination you referred to)
    5. In the Network tab, you'll see a list of GET/POST requests being made by the client (ie, the browser) to the server.
    6. In the Filter box (on the top-left of the Network tab), type in the search filter method:POST.
    7. Click on the entry in the Name column. This will open up more details about the POST request. Scroll down to the section titled Form Data.
    8. Click on the view encoded button in the Form Data section
    9. These are the parameters your friend included in the URL. You'll notice hdnYear and hdnMonth also listed in there. The URL your friend gave can be obtained by clicking on view source