Ultrashock Forums - View Single Post - GZip compression + Flash Player + IE6 = Nightmare

silverdog · 2008-12-04 #27

I had this same problem (ie6+ flash + gzip on iis) and ran accross this thread looking for a solution.

The thread gave me some hints and I ended up finding a solution. So I figured I would join and post to help someone else out in the future.

I did not want to simply turn compression off because it has great benefits for bandwidth....

Ie6 typically seems quite happy with gzip compression, but for some reason flash has issues with it when a no cache header is sent back from the server.

So if you change this header from the server
Cache-Control:no-cache
to
Cache-Control: private

things will work. Not exactly sure why, but that seems to make ie6 give the correct decompressed stream to flash. I tested with the sp1 version of ie6, so I'm pretty sure it resolves it for all versions.

	silverdog	2008-12-04 #27
	I had this same problem (ie6+ flash + gzip on iis) and ran accross this thread looking for a solution. The thread gave me some hints and I ended up finding a solution. So I figured I would join and post to help someone else out in the future. I did not want to simply turn compression off because it has great benefits for bandwidth.... Ie6 typically seems quite happy with gzip compression, but for some reason flash has issues with it when a no cache header is sent back from the server. So if you change this header from the server Cache-Control:no-cache to Cache-Control: private things will work. Not exactly sure why, but that seems to make ie6 give the correct decompressed stream to flash. I tested with the sp1 version of ie6, so I'm pretty sure it resolves it for all versions.