More clues, after fiddling around with downloading text files and using crossdomain.xml on my own server.
When I'm loading the text file from a different host name, it requires a crossdomain.xml file to allow access to the file -- removing the crossdomain.xml file or the <allow-access-from domain="*" /> from that file results in both browsers returning a null string (access denied, as it's supposed to work). But my problems is that YouTube is sending me a proper crossdomain.xml file that allows access from everywhere, then IE is requesting the content and getting it back from YouTube, but Flash is acting like the request failed or access was denied (even though it fetched the content), while Flash in Firefox works just fine and returns the content. When I test it on my own server, IE is allowed and Flash gets the content, but against YouTube's server, it's denied. When I use Firefox, clear the cache, and load a test flash file that loads an xml file from youtube, it first fetches crossdomain.xml, sends these headers, and gets this response: Host: www.youtube.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7 Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Proxy-Connection: keep-alive Cookie: LOGIN_INFO=dda826149e0e26de6ec8e7f0a9f267fce3QgAAAAbV91c2VyX2lkX0FORF9zZXNzaW9uX251bWJlcl9tZDVzIAAAAGEwODNmNzhmNzZlMTkzZjQ3YmI5ZWM1NjYyNDlmZDFkdAkAAABtX3VzZXJfaWRsAgAAAM9S6wMw; VISITOR_INFO1_LIVE=vP5JK5d6W8w; use_hitbox=72c46ff6cbcdb7c5585c36411b6b334edAEAAAAw; user_omniture=3756d44ab2f6fdee26892cc5805390c2dAEAAAAw; watched_video_id_list_a2deh=e98a31cbffe67f8c366157bb7c9c47fcWwIAAABzCwAAADNfU1N1TzFnVVVFcwsAAABEQnpxUWpEUUg2QQ== <?xml version="1.0"?> <!-- http://www.youtube.com/crossdomain.xml --> <cross-domain-policy> <allow-access-from domain="*" /> </cross-domain-policy> But when I use IE, clear the cache, and load the same test flash file, it sends these headers and gets this response: Accept: */* x-flash-version: 9,0,16,0 Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 1.0.3705) Host: www.youtube.com Proxy-Connection: Keep-Alive Cookie: VISITOR_INFO1_LIVE=82Ztya2U95o and gets this response: <?xml version="1.0"?> <!-- http://www.youtube.com/crossdomain.xml --> <cross-domain-policy> <allow-access-from domain="*" /> </cross-domain-policy> Even though that's a good looking crossdomain.xml, the flash player can't fetch files in ie but works fine in firefox. When I made a crossdomain.xml on my server that denies access, Flash does NOT fetch the text file because it's denied access first. So I don't think this is a crossdomain problem. In the case of accessing youtube from Flash in IE, it fetches the crossdomain.xml file successfully and then fetches the html file successfully (because it was permitted access), but then SOMETHING ELSE goes wrong after the html content arrives, and Flash reports null back to my onData handler instead of the html content string. Here is the request that ie sends out for the html file, which succeeds, and returns valid content, but then Flash acts like it failed: GET http://www.youtube.com/watch?v=3_SSuO1gUUE HTTP/1.1 Accept: */* Referer: http://www.donhopkins.com/video/test/video/test-xml.lzx?lzt=swf x-flash-version: 9,0,16,0 Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 1.0.3705) Host: www.youtube.com Proxy-Connection: Keep-Alive Cookie: VISITOR_INFO1_LIVE=82Ztya2U95o; use_hitbox=3d11d5cb2b3e40e368f83f82e88170a4dAEAAAAx; user_omniture=3756d44ab2f6fdee26892cc5805390c2dAEAAAAw; watched_video_id_list=e3cb7278961c02786956774e9199cf89WwEAAABzCwAAADNfU1N1TzFnVVVF Here is the equivalent request to my server that succeeds, and returns valid content: GET http://www.piemenu.com/foo.txt HTTP/1.1 Accept: */* Referer: http://www.donhopkins.com/video/test/video/test-xml.lzx?lzt=swf x-flash-version: 9,0,16,0 Accept-Encoding: gzip, deflate If-Modified-Since: Wed, 27 Sep 2006 07:41:32 GMT If-None-Match: "5d035f-7-8d402300" User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 1.0.3705) Host: www.piemenu.com Proxy-Connection: Keep-Alive Very weird! -Don _______________________________________________ Laszlo-dev mailing list [email protected] http://www.openlaszlo.org/mailman/listinfo/laszlo-dev
