GTA IV “Liberty City Gun Club” Trailer

Well, I’ve never been much of a GTA fan, but this trailer surely speaks to me.

“If every citizen was armed, no one would be DUMB enough to shoot people !”

PSP Internet Browser HTTP Headers

I remember visiting a PSP-only website, which when browsed on PC, gives a different output saying something like “you should view this on PSP”. I wonder how they implemented it.

I guess PSP must send some kind of special info to the server, so I wrote a little PHP script showing request headers. (traditional sniffers / browser plugins won’t work now, unless you wanna port them to PSP yourself, lol).

As my hosting does not allow apache_request_headers, I have to extract the data from $_SERVER myself.

<?php
foreach ($_SERVER as $k => $v) {
	if (substr($k, 0, 5) == "HTTP_") {
		// Format the variable names
		$k = str_replace('_', ' ', substr($k, 5));
		$k = str_replace(' ', '-', ucwords(strtolower($k)));
 
		echo "<tr><td class=\"e\">$k</td><td class=\"v\">$v</td></tr>\r\n";
	}
}
?>

You can point your PSP to http://playground.softboysxp.org/show_request_header.php and test it yourself.

Here’s a snapshot taken on my PSP

Clearly, there are two PSP-specific variables, x-psp-browser and x-psp-productcode. Also notice that the User-Agent was set to reflect PSP’s browser.

Further Research

I googled x-psp-browser and found this document by SCE.

Guidelines for Creating Content for the “PSP” Internet Browser (Japanese)

User-Agent by far can only be “User-Agent: Mozilla/4.0 (PSP (PlayStation Portable); 2.00)”

x-psp-productcode represents the region of your PSP and can be one of the following

x-psp-browser is in the format of “n.nn (xxx; yyy; zzz; …)”
n.nn is the version of the firmware
xxx, yyy, zzz … being parameters, specify from where the browser was lunched, with LX for XMB, SX for applications under XMB, and LU being applications on UMD or Memory Stick. Another parameter, “system”, specifies the version.

Another variable, x-psp-application can be used to specify the name of the game/application, when the browser was launched by an application on UMD/Memory Stick.