User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; it-IT; rv:1.7.5) Gecko/20041110 Firefox/1.0 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; it-IT; rv:1.7.5) Gecko/20041110 Firefox/1.0 Sometimes when I right click "Save destination as" I get a corrupt copy of the file. The corruption is due to the HTTP headers. Reproducible: Sometimes Steps to Reproduce: 1. Go to http://www.factotus.it/it/content/DisplayPopup.jhtml?documentId=I5998 2. Right click on "Scarica il modulo di autocertificazione di abbonato RAI" and click "Save desinatio as" to save the PDF file http://www.factotus.it/it/documenti/autocertificazione.pdf 3. Sometimes the PDF content is corrupted by the HTTP headers. Actual Results: Sometimes I am unable to open downloaded files (movies, PDF, etc.) because the HTTP headers. For example: ac8 HTTP/1.1 200 OK Date: Mon, 03 Jan 2005 18:50:36 GMT Server: Apache/1.3.19 (Unix) PHP/4.2.2 mod_ssl/2.8.3 OpenSSL/0.9.6b Last-Modified: Fri, 17 Dec 2004 15:51:41 GMT ETag: "e8602-3118-41c3008d" Accept-Ranges: bytes Content-Length: 12568 Keep-Alive: timeout=15, max=99 Connection: Keep-Alive Content-Type: application/pdf %PDF-1.3 %äãÏÒ 5 0 obj <</Length 6 0 R /Filter/FlateDecode >> stream xœ+ä2T0 BC ´01THÎå2Ð30µ´´ë"s€r…på–F– &æÆ AC#=Sˆ0œ hendstream endobj 6 0 obj 60 endobj 7 0 obj <</Type/XObject /Subtype/Image /Width 170 /Height 52 /BitsPerComponent 8 /ColorSpace/DeviceRGB /Filter[/FlateDecode] /Length 8 0 R >> stream xœíœÁuó8„Kq;.Ä=¤ÝrLºæœ»pn ü7.VßrÞ¤9É®½‰æà'KEq@ A•òüùó§{¼cÇŽŸËåòôôt:öÿK ¢§i:Ã0‡8X)?Žc! Q9ŸÏ©ž›ðþþ5Ä£Cðº5P ®¦óq&.µÇï3>¬!žÕ>Ñïõ:Û¦z%©%/Ë |÷Æ8hŸ»òúKm؈?oooÁ{0´®@<ë`ˆ»¼’›÷†ççgÍ臗—¿*IÄ™ ¢ÌÇQ’óãŽãRÜåàÞ"þúã8£{ý8à-áqQy¼oÓŽ××Wnz Þ˜¶+ô:e•qÆëçÍ£Ù^ÕFDgF ÓŒ8ŽÄß ôuªE?Ä^ƒhdÜňÄq+¥+OfǃèÆøû<1†¸¨Ÿ± I è•ã¡PÌÎ>24xY1žØP—}¨‰Ç¡è|‚èd-s//źcß)£þ¨Š«¼QÜHµ‰}¤ý+ìÓÛ4Œ€h@<­¿Œî(iáqH€©hvoQDôŒ÷¯ÉPz™‘” ô¥Þ£<½ûm·ÀK¼ciØçí¢ñ-ûôvà›<EäRñãöõi5¤2þÐÄ~¼)Òþ9ö© 1Zã7*d Ã)ìSgsÄ€«D”Ÿ»â˜YC‚ä—ec€·kÛÌø‚¦¶Ó¼£49ƒ ”†ý¤‹¢L{•ãx/×ê^†pªe‚¦I!ém®¶*Q¯ß*vO–SŽiÒ­ìÓæxÍófp:$NB4šœó(”< ˆ2(:º+Σ£˜Ðñ5£–ZÒíR¡K\zSP’ÑÄ ~×Ùo¯¢ó©¤Ë>ãw¥W) «U8>£ *æm«-Æ>•Sx;û²Ç =Z‚âb,óî0ˆyƒ}nDPôOÔpš’€ŠÀËÀG`§Û$éŸîÕí컌1ÜÊ>L±.ûíÌž ýS®%!H™³ïºÂ›šØ‡)M|ÛÙ§<£X#18(€ÞÑÌQ ¤ÇUÎÄo4€) 7ÜtÖm3C¸,LµåZfP>iîFmgŸ ±Êû]AM~¥¤KÛ÷•‰«3nµv¥‹!©Hç§æmdŸ‰N¿©{™å1ŸG²íu#Ž€Û„î¢E£UÜ+;¡ÛªVú0t9W‡s‹„yön¹maŸòêù.ûÉ£TIã»®Ðä8¨~·úZ.’a0\{ ·Îûxô²Bý(f¨jØêíP°ˆ³À¬qªà^Q@=Ñ6ôj×â-×>4°DEì`dâ\¸<p5uš{mÙ÷]öK%—Y/Ê£sº“{’éØêÒ]ÉãcòUýz5ØOcáVƒ6F0øc£ 4Ìe¼aÞ+üËÔûHˆ¬D@†%óÂzÐ#m¨ˆc/Œ ¡«Düõ[r[cxý¤—–Ø/Mè©•ÒÐöF&t£=’ Ä jóìÐx@Ÿ`: ’0ƒ}‡'…5Æ5äÕ<BCÑ)yƒy!J~ت²öÝ8ç½Ð#Ú0õ¿F+Æ#=ˆ‘ƒÇa¶èžÀ>ò@¨«O»BA‡bmëGŒe"6ί,¢'W I…‘… UóÒt¿ã¾`J“w!Œh§[k=¢^g(ï´¦¾´ F÷~×W <‹®Žpý0–0Y£p¬Ðy…ød!K˜"Š³»§ < *Ýs÷àŒ{¢Þ,r“@~ì‡lh*¹÷KïøRìsÙù¡®“m/ãõ` &nç.9˜‚ZùÅ1\2 ÜnS¦¨JÊϯTõ{ §¿ž_¢»¢^“¾|£Ïqä™)d-0#`="L.O·=­#ì‘𮧌!16YëçWªú KQÅxZÚƒA49J Ò ¾),À°RœŸÚp‡ºZĘbNÁ–` Fýœ€Ábqi²|•Ò[ZþhÏwo¶C~0°îЮÄaX’ÃlƒnYdÚ•Àä*‚¡’ÀÂZ#°ÌÁ¢¨ŸQÏ¥õôÁÈvö¿*'ËÖæ8'¦;õβ]@1ô!‹}XøšCe *Ú3ÔØ,F`YûÀc³;ûß…òD%ÃŽ`ÿR&w3,…ßq<s•)@*‚ä@–Iiý¾%ögµÎ¡Ì½[Ùw¿u©ØëS¬ñ5˜pP†Í†–æ´l'À ÌE•G±` bO"N„•.5 ,նľ·PVŽO³ ................... etc. etc. Expected Results: Downloaded files have to be not corrupted.

This is sort of a garbage in/garbage out thing. If we get binary data that's corrupted, we have no effective way of knowing that, since various file formats have different data structures. If this is what we get from the server, the server needs to fix their download script. There's no way we can uncorrupt corrupt tranmissions.

The problem is that with MS Explorer the download is never corrupted. Why?

I have the same problem, very time I downloaded a file by right mouse click "Save Link as.." the file gehts damaged. When I open the file (for example an mpg movie) with a text editor, the file starts with an HTTP Header. The actual data follows the header but is separated by different numbers. So it's no surprise that the file doesn't work. Why does Firefox put the http header at the beginning of the file? Downloading the file with IE doesn't damage the file.

I have the same header corruption occuring when I download the file from FireFox while ZoneAlarm Pro is running (tried both ZA 5.1.033 and 5.5.062). Either file downloads completely, but is corrupted, or the download doesn't complete at all. No ZoneAlarm -- no problem. IE6 has no such difficulty.

win xp sp2 2005022705 I think I stepped into this issue at url http://www.theserverside.com/books/wiley/masteringEJB/downloads/MasteringEJB3rdEd.pdf and url http://www.glyn.com/data/glyn/media/doc/kart_ess.pdf

I sniff HTTP requests and responses to try to understand why I've got this problem. When clicking "Save link as...", Moz sends an HTTP HEAD request, which is incorrectly handled by the HTTP server (in our case, IIS6+ISAPI dll). Our application sends the headers and the file content back. It's our mistake, since we should not send content on HEAD requests. Once the HEAD response is received, Mozilla sends the GET request to get the file. However, the content saves on disk contains both the content from the incorrect HEAD response, as well as the headers and the content received from the GET response. Once again, its our application (eg. bad HTTP servers or upload scripts) which poorly handles HEAD requests, but maybe Mozilla should take care of this case and try not to mix up both responses. IE never sends HEAD requests, so we never had problems with it.

Mike Connor is this still Invalid?

Yes, still invalid. If the server can't cope with a valid HTTP request and sends bad data, we'll get bad data and we can't control that.