Duplicate headers received from server issue on chrome

11 / Apr / 2012 by Tarun Pareek 4 comments

Recently, in my project while downloading some files(not on all files) i am getting exception on chrome, that say :
Duplicate headers received from server

Error 349 (net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION): Multiple Content-Disposition headers received. This is disallowed to protect against HTTP response-splitting attacks.

But when i download the same files on IE, Firefox and other browsers that causing exception, no problem occur it work like charm. 🙂
But its weird that why is chrome giving exception only on some files while downloading, then i searched, i found that new release of chrome has this problem. It seem like Content-disposition header become very strict and sensitive, in the spec that chrome uses.
Solution that worked for me to solve the problem :
Wrong :

response.setHeader(“Content-disposition”, “attachment; filename=${fileName}”)

Correct :

response.setHeader(“Content-disposition”, “attachment; filename=\””+fileName+”\””)
It worked for me. Hope it helps you also 🙂
Tarun Pareek

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