HTTP_Header and browser abortion

Hello, I'm trying to keep a connection to a browser over a long period (the server generates very big files in the meantime, and should afterwards display the download links to the files). But after some time (amount seems to differ) the connection is closed. Maybe it's not the browser who closes the connection, but s.th. in between, like a proxy? I tried different browsers (IE, Mozilla, Opera), but the connections closes every time. If I use w3m on the server itself, everythings works (in the worst case it took 13 min, but then the download links are displayed). At the moment I use only: Connection: Keep-Alive But I also tried (different combinations): Expires: 0 Cache-Control: must-revalidate, post-check=0, pre-check=0 Cache-Control: no-cache, must-revalidate Pragma: public Pragma: no-cache Expires: Fri, 01 Jan 1999 00:00:00 GMT" Last-Modified: ".gmdate("D, d M Y H:i:s")."GMT" Transfer-Encoding: quoted-printable Connection: default Could anyone tell me the correct headers to maintain a connection or point me to some documentation to that topic? I could not find any documention or examples within HTTP_Header on the pear website, or did I search wrong? Best regards, André Bischof -- +++ GMX DSL Premiumtarife 3 Monate gratis* + WLAN-Router 0,- EUR* +++ Clevere DSL-Nutzer wechseln jetzt zu GMX: http://www.gmx.net/de/go/dsl