[Webkit-unassigned] [Bug 62513] New: amazon.com requests root doc twice

Sun Jun 12 10:19:49 PDT 2011

https://bugs.webkit.org/show_bug.cgi?id=62513

           Summary: amazon.com requests root doc twice
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: tonyg at chromium.org
                CC: abarth at webkit.org, japhet at chromium.org

http://www.amazon.com/ includes an iframe with src=# and an immediately following script which changes the src of the iframe.

In Safari 5 and Firefox 5, the script seems to execute and change the source before the root document is double requested. In WebKit ToT, the root document is requested a second time (and the request is cancelled when the src is changed). It is also possible this is a race, and I just happened to lose in WebKit ToT.

I'm not sure if there's an easy fix other than allowing frames in the memory cache (bug 49246). If that were the case, then an iframe with src=# wouldn't have to refetch in the same way that other types of resources with the same src aren't refetched.

Here's the code in question:
<noscript><style>#cachebust_409923_adcontent{display:none;}</style></noscript> <script>(function(w,n){w._ued=w.uet&&w.ues&&w.uex;if(_ued){ues('wb',n,1);uet('bb',n);}})(window,'display-ad-right-2');</script> <div id='cachebust_409923_adcontent' style="width:301px;height:270px;margin-top:0px;margin-bottom:16px;overflow:hidden;"> <iframe src="#" id="cachebust_409923" scrolling="no" allowtransparency="true" marginwidth="0" marginheight="0" frameborder="0" width="301" height="270">></iframe> <script> (function(w,u,f,c,n){ function x(){if(_ued)uex('ld','display-ad-right-2')} f=document.getElementById('cachebust_409923'); try{ (w.aanParams=w.aanParams||{})['right-2']='site=amazon.us;pt=Gateway;slot=right-2;pid=507846;prid=12YKFDK04BA1WCNBPPVS;arid=715ad1512e5b46ddbf23f0b5402f8506;ef=0.05'; w.d16g_dclick_right_2_863_0='amzn.us.gw.atf;sz=300x250;bn=507846;u=715ad1512e5b46ddbf23f0b5402f8506;ord=12YKFDK04BA1WCNBPPVS;s=i0;s=i1;s=i2;s=i3;s=i4;s=i5;s=i6;s=i7;s=i8;s=344;s=333;s=1009;s=335;s
 =336;s=283;s=32;s=u12;s=m1;s=m4;s=u4;s=u2;s=u13;z=3;tile=1'; c=f.contentWindow.document; c.open(); c.write("<body onload='document.location=\""+u+"\";'>"); n=0; f.onload=function(){if(++n==2)x()}; if(_ued)uet('af','display-ad-right-2'); c.close(); }catch(e){ f.onload=x; f.src=u; } })(window,'/aan/2009-09-09/static/amazon/iframeproxy-5.html#zus&cbright_2_863_0&eCM'); </script> </div> <script>if(_ued)uet('be','display-ad-right-2');</script>

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