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Logging into the Compndium in Java code
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<blockquote data-quote="AbdulAlhazred" data-source="post: 5228622" data-attributes="member: 82106"><p>Looking at my perl based compendium access module I don't see any state information attached to any of my URLs at all. I just access <a href="http://www.wizards.com/dndinsider/compendium/race.aspx&id=1" target="_blank">http://www.wizards.com/dndinsider/compendium/race.aspx&id=1</a> for instance. If I'm not authed I get back the logon page instead of what I asked for (which I detect via a regex that looks for the string "Save Time with Every Search" and if its present then I send a second request with email and password (there may be some other fields, look at your response and see what other fields the form sends back). It looks like that's where the EVENTVALIDATION etc comes into it. I'd guess the values you need to pass back for those fields are going to be unique to each request and need to be parsed out of the login page each time.</p><p></p><p>As far as cookies go I never investigated that much, I just set up a CookieJar and attach it to my HTTP session and it all seems to work fine. </p><p></p><p>I don't recall off the top of my head exactly what they are, but there are Java libraries that can parse an HTML page and get all the form field values out of it so you can construct a valid response to the form. Its also possible that other headers are checked, like Referer (sic) in particular. The Java HTTP library is frankly rather obtuse as well. Without really going over it with a fine toothed comb I don't see any obvious errors but it can be a real pain in the butt to get it to work exactly right. Your best friend is going to be something like Wireshark that can sniff exactly what you sent and compare it with an access that works properly using a browser and see where they differ. There will be some trivial differences but I'm guessing something in there will show up as obviously not quite right.</p></blockquote><p></p>
[QUOTE="AbdulAlhazred, post: 5228622, member: 82106"] Looking at my perl based compendium access module I don't see any state information attached to any of my URLs at all. I just access [url]http://www.wizards.com/dndinsider/compendium/race.aspx&id=1[/url] for instance. If I'm not authed I get back the logon page instead of what I asked for (which I detect via a regex that looks for the string "Save Time with Every Search" and if its present then I send a second request with email and password (there may be some other fields, look at your response and see what other fields the form sends back). It looks like that's where the EVENTVALIDATION etc comes into it. I'd guess the values you need to pass back for those fields are going to be unique to each request and need to be parsed out of the login page each time. As far as cookies go I never investigated that much, I just set up a CookieJar and attach it to my HTTP session and it all seems to work fine. I don't recall off the top of my head exactly what they are, but there are Java libraries that can parse an HTML page and get all the form field values out of it so you can construct a valid response to the form. Its also possible that other headers are checked, like Referer (sic) in particular. The Java HTTP library is frankly rather obtuse as well. Without really going over it with a fine toothed comb I don't see any obvious errors but it can be a real pain in the butt to get it to work exactly right. Your best friend is going to be something like Wireshark that can sniff exactly what you sent and compare it with an access that works properly using a browser and see where they differ. There will be some trivial differences but I'm guessing something in there will show up as obviously not quite right. [/QUOTE]
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